Yiyun Hengan Kerui Electric Co., Ltd. *** Shanghai Jiading 201801Summary:The energy management system is a monitoring and management system for energy consumption, which can monitor the use of various types of energy in real time, automatically analyze the energy consumption and energy efficiency of each equipment and give reasonable suggestions, so as to further optimize the equipment to achieve the ideal configuration of energy use by the enterprise, and ensure that all equipment is in a state of high efficiency, energy saving and emission reduction. Keywords:Energy management; energy consumption collection; energy consumption analysis; Energy Consumption Monitoring 1 Energy Management System Application Background 11 energy management overview energy consumption is continuous, unplanned arbitrary use is not advisable, with the development of China's economy and environmental resources pressure is increasing, energy conservation and emission reduction situation is severe, in China, sustained rapid economic growth has also caused the energy crisis and other problems. Energy conservation, emission reduction, and low-carbon environmental protection are no longer just a hot topic in society, but also the only way for us in the future. Conscientiously implement the spirit of the 19th National Congress of the Communist Party of China, requiring to accelerate the promotion of energy conservation and consumption reduction, accelerate the implementation of cleaner production, accelerate the recycling of resources, transform to a conservation, clean, low-carbon and efficient production mode, and implement the energy development strategy of saving and development at the same time, and putting conservation in the forefront. The construction of an energy management system by an enterprise can not only meet the company's needs for energy management, but also expand with the continuous development of the enterprise. The use of this system can effectively reduce the cost of energy consumption data statistics, form maintenance and reports, data processing, through the analysis of monitoring data, to help enterprises carry out real-time monitoring, accurate statistics and detailed energy consumption, for enterprises to save energy and self-improvement to provide a solid data basis and strong decision-making support. 1.2. Analysis of the current situation of the enterprise, energy consumption data information is an important energy consumption point and key indicators of the enterprise, most enterprises do not make full use of information centralized management means, collect energy consumption information of a workshop or equipment, without the information can not accurately analyze the energy consumption and cost situation in the production process, resulting in energy consumption in the production process does not play a key role and guidance. Most enterprises still use the old-fashioned instrument and do not reserve the data communication interface, the instrument can not form a network connection, the collection of information such as energy consumption mainly relies on the traditional manual meter reading for data recording, the work intensity is high, the manual error is prone to cause the data to be inaccurate, the data can not be stored through the structure, can not be shared within the enterprise through the information system. 1.3. Enterprise management needs 13.1. One of the main objectives of the power monitoring energy management system is to collect and monitor power consumption information, establish an energy consumption data center of the enterprise, and provide a data management platform for the refined operation and production cost reduction of the enterprise: through real-time and accurate collection of power data, solve the power data collection task completed manually; Through data analysis, the problem of power consumption is discovered in a timely manner, and the analysis of the trend of total energy consumption, the deviation analysis of total electricity energy consumption, the comparison of electricity consumption by equipment or region, and the comparison analysis of the ratio of electricity consumption provide powerful decision-making data for the production and operation of the enterprise; Realize the intelligent power consumption of equipment, improve the utilization rate of electric energy, and achieve energy-saving effects; Monitor the electricity consumption indicators and energy consumption indicators per unit product of key work processes, set warning lines for the specified energy-saving targets, and carry out automatic alarms, dynamic monitoring and real-time monitoring in the production process for the indicators that do not reach the targets. 1.3.2. Water monitoring: Real-time data such as industrial water, domestic water, and greening water in each plant and workshop can be monitored according to the region on the plant map. Real-time display of water use plan to effectively supervise the water management of the entire plant. 1.3.3. Gas monitoring can realize real-time monitoring and centralized management of natural gas, compressed air, high-temperature steam and other gas energy consumption in the entire plant area, so as to effectively avoid waste and standardize operation. 1.3.4. Energy consumption analysis, energy cost analysis and bill management; Energy consumption statistics ledger and report. 1.4. The solution is to replace the original water, electricity and gas meters, and use intelligent monitoring instruments with communication remote transmission functions, collect and upload the detection data to the communication management server, and the energy management system analyzes and presents the energy consumption usage. 1.5. Basic functions of energy management system15.1**Monitoring: Real-time view of a variety of energy consumption indicators of each monitoring point, including voltage, current, load, electricity, water flow, gas flow, etc. 1.5.2. Statistical analysis: starting from the three parts of cost, energy consumption and index, it is divided into three modules: daily, monthly and year, and reflects the energy consumption of energy-using equipment through various forms such as energy consumption trajectory chart and **. It is also easy to operate and view historical data. 1.5.3. Data analysis and comparison of the difference of energy consumption indicators of a single energy-using equipment in different time periods, and the comparison of the difference of energy consumption indicators of similar energy equipment in the same time period, and guide users to manage energy consumption. 1.5.4. The form of analysis results: the energy management system can be displayed on the server interface, and the relevant information can also be displayed through the APP or WeChat service account, so that users can understand the on-site operation of the power distribution room, water and gas energy consumption at any time. At the same time, the platform has the functions of timely alarm and information push. 2. Energy management system scheme design 21. The design goal of the energy management system is to apply the Internet of Things technology combined with modern rational energy management ideas to build an information system for enterprises, and its goal is to enable enterprises to use energy scientifically through the intelligent energy management system to achieve the "safe, reliable, economical, efficient and clean" energy consumption goals and the "visualization" of energy management. Through the "visual" application of energy consumption management, it helps enterprises to change energy consumption methods, improve energy efficiency, optimize resource allocation and improve energy environment, so as to reduce energy consumption and reduce energy costs. 2.2. Structural design 22.1. The system structure: The energy management system includes the energy efficiency management application layer, the network communication layer, and the field equipment layer. 
Figure 1 Schematic diagram of energy management system Energy efficiency management application layer: complete data collection, verification, analysis, processing, output, system maintenance, authorized use, authority hierarchical control, etc.; And it can transmit important data, alarm information, fault information, etc. of on-site operation to enterprise decision-makers. Network communication layer: RSX485, Ethernet, 5G, WiFi and other transmission methods are used on site to connect the energy collection module in the area to the relative communication management machine, and each communication management machine is connected to the first server through the network. Field device layer: The field device layer is responsible for the collection and upload of electricity, water, and gas parameters. The field equipment layer is composed of multi-functional power meters, multi-functional electric energy meters, water, gas energy and other acquisition devices. 2.2.2. Functional structure The data acquisition structure collects energy consumption data distributed in the enterprise distribution network, such as converting the analog signal of voltage and current into a digital signal, and transmitting the electric energy data to the data master station; The main equipment includes multi-functional power meters, 485 communication servers, 485 communication networks, 5G communication networks, etc., and the system interconnects various sensors into a network and connects with the master station system; The data center structure includes a data master station system, a database system, a data processing system and an information release system: the data master station system receives the data collected by the enterprise sensor for analysis and storage, and at the same time issues instructions to the enterprise sensor to request the required data; Database system: store the data of enterprise energy consumption indicators and the processing results of the data processing system; Data processing system: complete the processing of enterprise energy consumption data. The system includes application server, data analysis model, information display model, intelligent power consumption model, etc.; Information release system: the enterprise management information is released to the web server, and the enterprise obtains the power management information by logging in to the Internet. The system includes web servers, web applications, information security systems, etc. 3. Analysis of the specific implementation of the energy management system 31 system overview energy management system is the use of intelligent integration technology, based on the B S architecture of the energy management platform, the platform collects energy consumption and operation information of each energy consumption monitoring point, the formation of energy consumption classification, sub-items, sub-regional statistical analysis, the unified scheduling of energy, optimize the balance of energy medium, reduce gas emissions, improve environmental quality, reduce the comprehensive energy consumption of enterprises and improve labor productivity has an important role, to help customers optimize the use of energy, so as to achieve "energy saving management, green energy efficiency". 3.2. Platform architecture: The energy management system adopts a multi-layer structure of B S. In the BS mode, the client runs the standard browser software, makes a page access request to the web server through the HTTP protocol, the page executes the corresponding logical program (generally accesses the database through components), and the web server converts the result returned by the page program execution into an HTML document ** to the client browser. The system adopts a three-layer architecture, which can meet the needs of users and system security. At the same time, the stability of the core architecture of the system is maintained, so as to ensure the quality, stability, development cycle and development cost of the customized system. 3.3. Introduction to system functions: (1) User login authentication function. The system can use the user name and login password to authenticate the login, and the new alarm information will automatically pop up after entering the main interface, reminding the on-duty and operation and maintenance personnel to view and deal with it in time. (2) Energy Kanban function. Through the energy flow diagram, the energy consumption of the main equipment of each department of the enterprise is vividly displayed. (3) Energy monitoring function. The real-time data and historical data displayed by energy monitoring are displayed vividly in the form of numbers** or graphical curves. (4) Energy consumption statistics function. The energy consumption statistics includes three parts: sub-item energy consumption, departmental energy consumption and energy consumption ranking, which shows the actual energy consumption of each department and each monitoring point in the enterprise through different display methods. (5) Energy consumption analysis function. The energy consumption analysis includes four categories: enterprise energy consumption analysis, departmental comprehensive energy consumption, equipment energy consumption analysis and index comprehensive analysis, which shows the actual energy consumption of various departments and monitoring points in the enterprise through different analysis methods. (6) Report function. The report function is divided into ** table, monthly report and annual report. We provide a variety of reporting services to meet the diverse needs of production sites. The report is equipped with a printing function, which can be automatically printed or triggered by regular printing, and can be exported to Excel**, which significantly reduces the labor cost of meter reading work and improves the economic benefits of users. (7) Alarm function. You can set and prompt alarm information such as the energy consumption of the device. (8) App or WeChat function. Through the APP or WeChat service account, we can keep abreast of the on-site operation status and energy consumption of the equipment, realize timely fault alarm, information push and other functions. 3.4. The network transmission scheme adopts an industrial-grade embedded intelligent gateway with embedded low-power A M core, as the core of the station-side monitoring system, to solve the problems of various field device access, data transmission and protocol conversion, to provide a complete protocol layer solution, to support a variety of common power system communication protocols, to customize private protocols, and to have event processing functions. Data freezing and staged storage are supported. It supports data transmission to the cloud platform, and can receive instructions from the cloud platform to achieve local control, automatic inspection and other functions, and supports remote system upgrades. 3.5. The server deployment scheme selects an application server and a database server to realize the architecture of business and data separation, the server is deployed within the enterprise, and the enterprise needs to have an Internet connection, and the system access interface can be published on the Internet to facilitate later data access. 4. The system achieves the goal (1) to realize the measurement of various energy used by the enterprise, realize remote meter reading of the water, gas and electricity energy consumption data of the enterprise, interface the energy consumption data, compare and analyze the energy consumption report, and implement monitoring and assessment. Eliminate the occurrence of running, running, dripping and leakage, analyze and compare the historical data of energy consumption, and provide a scientific basis for energy-saving technological transformation. (2) Through the APP or web page, the production enterprise can remotely encrypt and decrypt the production equipment and alarm the equipment failure through the energy consumption monitoring and big data analysis cloud computing center. (3) By collecting and monitoring energy consumption information, the energy consumption data center of the enterprise is established to provide data support for the refined operation of the enterprise and the reduction of production costs. (4) Reduce the work intensity of the personnel on duty, avoid the inaccurate factors of manual meter reading, and improve the response speed and resolution efficiency of accidents. (5) Timely discovery of energy consumption problems through data analysis, through the analysis of the trend of total energy consumption, the deviation analysis of energy consumption, the comparison of energy consumption by equipment or region, and the analysis of the ratio of energy consumption, etc., to provide powerful decision-making data for the company's production and operation; Improve energy utilization and achieve energy saving effect. 5. Accuray Enterprise Energy Management Platform 51 Platform OverviewAccuray enterprise energy management platform adopts automation, information technology and centralized management mode, implements centralized and flat dynamic monitoring and data management of the production, transmission and distribution and consumption links of the enterprise, monitors the consumption of various energy sources such as electricity, water, gas, steam and compressed air of the enterprise, and helps enterprises to meet various energy needs and energy consumption, energy quality, product energy unit consumption, energy consumption of each process, through data analysis, mining and trend analysis. The energy utilization of major energy-consuming equipment is subject to energy consumption statistics, year-on-year analysis, energy cost analysis, energy consumption analysis, and carbon emission analysis, so as to provide basic data and support for enterprises to strengthen energy management, improve energy utilization efficiency, tap energy-saving potential, and energy-saving assessment. 5.2. Application sites: steel, petrochemical, metallurgy, non-ferrous metals, mining, medicine, cement, coal, logistics, railway, aviation industry, wood, chemical raw materials, mechanical and electrical equipment, electrical products, tool manufacturing, etc. 5.3. Platform structure
Figure 2 Platform structure54. Main functions of the platform54.1. By displaying the total energy consumption, discounted value, energy cost, energy consumption trend, sub-item energy consumption proportion, regional energy consumption comparison, and three-dimensional display of the energy consumption dynamics of the enterprise's important processes or equipment, you can intuitively understand the current energy consumption of the enterprise. 5.4.2. The dynamic display of the operation monitoring energy management system monitors the various energy sources (electricity, water, steam) used by the enterprise in real time, and provides dynamic graphic display from the overview to the specific, and provides regional data monitoring, and quickly browses the energy consumption data managed in the factory floor plan or the floor plan of a workshop. The system provides real-time monitoring of the operation status of the energy management system, realizes real-time monitoring of the change trend of key energy consumption state parameters, the operation status of energy-consuming equipment and the system operation alarm events in the operation of the energy system, so as to ensure the safety, reliability and stability of the entire energy supply, conversion and consumption process. The system provides graphical tools that not only configure a digital monitoring interface, but also have a real-time trend display. (1) The electrical main wiring diagram of the substation and distribution system is displayed to realize the real-time monitoring of the full power parameters and the status of the switching circuit breaker, such as voltage, current, frequency, power, power factor, three-phase unbalance, harmonics and other parameters. (2) Schematic diagram of the distribution of each branch pipeline of water, gas, compressed air and other systems, as well as real-time monitoring of the status of parameters such as flow, pressure and temperature; (3) Real-time monitoring of the operating status and energy-using parameters of key energy-using equipment systems (such as presses, etc.); (4) Real-time event alarm monitoring such as overvoltage, overcurrent, undervoltage and other protection signal alarms, system communication interruptions, power and non-power parameters exceeding the limit, and energy consumption exceeding the standard early warning. (5) The display of process flow diagram focuses on the operation parameters and energy consumption of each equipment in the process4.3. The transformer monitoring shows the load of each transformer, so that the transformer can be equipped with scientific and reasonable planning. Through the comparison of power efficiency under various operating parameters, the transformer loss is measured, and the economic operation interval of the transformer is found. According to the economic operation interval of the transformer, the load is adjusted, so as to reduce the loss of the transformer and save electricity. 5.4.4. The energy consumption statistics system supports different measurement and monitoring objects of enterprises, and provides quick query and display of daily, weekly, monthly, quarterly, and annual enterprise energy consumption year-on-year, product unit consumption, product discount comparison, energy consumption ranking, etc. The data is used in the form of bar charts, pie charts, histograms, etc., to realize the statistical analysis of energy consumption data such as power consumption, water consumption, and air consumption in the system. From the whole enterprise to a single equipment or workshop, the statistical analysis of the energy consumption data of the entire enterprise is realized through the query and analysis of the energy consumption data of the metering nodes in these areas, so as to meet the user's energy consumption data query requirements for regions, workshops, processes and equipment types in any period of time. By comparing the energy consumption data of different regions, etc., understand the energy consumption laws of different target areas, etc., automatically rank the energy consumption of these objects, find out the loopholes and unreasonable places in the process of energy use, so as to adjust the energy allocation strategy and reduce waste in the process of energy use. 5.4.5. The sub-item energy consumption system provides sub-statistics on the sub-item energy consumption of enterprises. According to the sub-items, the bar chart and pie chart are used to display the energy consumption of each sub-item, which is intuitive and clear. Through the trend of energy consumption, we can grasp the trend of energy consumption of enterprises in a timely manner. For abnormal energy consumption of each item, it can be found in real time, and the strategy can be adjusted to improve energy consumption and save energy. 5.4.6. The product output value unit consumption system can be connected with the enterprise MES system to import product output. Manual entry is provided for data that cannot be imported. Through the energy consumption data collected by the system, combined with the product output, the product unit consumption is calculated, the product unit consumption trend chart is generated, and the year-on-year and month-on-month analysis is carried out. So that enterprises can adjust the production process according to the unit consumption of products, so as to reduce energy consumption. 5.4.7. The energy cost analysis system supports the statistical comparison of the total cost of various energy consumption for the enterprise as a whole and the workshop and other objects that need to be assessed separately. It can provide the consumption of various energy types such as electricity, water, and gas in the statistical period and the corresponding cost data, and can be counted and compared with the percentage of various energy costs to understand the detailed distribution of energy costs of the entire enterprise. It also supports the analysis of unit costs. Users can select multiple assessment areas for comparative analysis of energy consumption costs, providing real and reliable data basis for users to establish an effective performance reward and punishment mechanism and daily management. 5.4.8. The energy cost analysis system supports the energy cost budget management function for enterprises and areas that need to be assessed and measured separately, allowing users to enter the detailed budget plan of energy costs, and by comparing the actual energy cost and budget cost for budget implementation management, you can intuitively understand whether the monthly or annual energy cost exceeds the budget, so as to facilitate the user to adjust and intervene in the budget in a timely manner. In addition, the system also supports the cost of energy costs according to the algorithm, and helps users to effectively manage the cost plan according to the historical budget execution and actual energy consumption data of the following months. 5.4.9. Performance analysis: Carry out daily, weekly, monthly, yearly, and periodical performance statistics on the use, consumption, and conversion of various types of energy, according to teams, regions, workshops, production lines, sections, equipment, etc., and conduct KPI comparison and assessment according to the performance indicators formulated by energy plans or quotas, so as to help enterprises understand the internal energy efficiency level and energy-saving potential. 5.4.10. Energy consumption**Through the analysis of the energy consumption usage of enterprise workshops, production processes, production equipment, etc., the energy consumption calculation model is established, the data and models are revised according to artificial intelligence algorithms, and the energy consumption trend of enterprises in the future is analyzed, so as to provide an effective decision-making basis for energy conservation. 5.4.11. The equipment operation monitoring function of the operation monitoring system provides a full range of management for key energy-consuming equipment, mainly including equipment operation status and key parameter monitoring, equipment ledger management, equipment energy consumption statistical analysis and equipment maintenance management. Through the real-time collection and monitoring of the working state parameters and working condition parameters of the equipment, the operating conditions of the equipment can be judged in time. Statistical analysis of equipment energy consumption can provide analysis and comparison of real-time energy consumption and historical energy consumption trends for equipment objects. Equipment ledger management and maintenance management can establish basic information files of equipment, can quickly realize the query and statistical classification of various characteristic parameters of equipment, information management of the maintenance and replacement history of equipment and its main spare parts, and can provide functions such as equipment scheduled maintenance due reminder and overdue maintenance alarm, so as to facilitate the establishment of economic operation files for each important equipment and ensure the safe, stable and economic operation of equipment. 5.4.12. Energy Balance and Loss AnalysisEnergy Balance and Loss Statistical Analysis mainly provides energy balance analysis for all aspects of the conversion, transportation and use of electricity, water, gas and other energy sources of the enterprise, and timely discovers the waste problems such as energy leakage and abnormal energy consumption in the process of use, and reminds users to intervene in time. The energy consumption of each link is evaluated by counting the energy supply and energy consumption of important energy-using links separately and calculating the difference loss between the two. For example, the loss analysis of the sum of the main pipe metering of the water system and the measurement and consumption of the branch pipes of each workshop is conducive to finding out whether there is water pipe leakage or illegal water use in time; Conduct loss analysis on the sum of the low-voltage incoming line metering and the metering consumption of each feeder circuit of the power system to evaluate and judge whether there is abnormal electricity consumption sites such as illegal electricity consumption and electricity theft, so as to help users find and correct the energy waste problem in the process of energy use and reduce the comprehensive energy operation cost. 5.4.13 energy-saving analysis energy-saving analysis is mainly for the enterprise after the implementation of energy-saving measures, the analysis of specific energy-saving effects, through the entry of energy-saving measures, comparative analysis of the implementation of energy-saving measures and the implementation of energy-saving measures after the implementation of energy-saving measures, in order to judge the implementation of energy-saving measures, to provide help for enterprise energy-saving, improve economic benefits. 5.4.14. The user analysis report provided by the analysis report system is mainly to provide the middle and senior managers of the enterprise with the summary of the statistical results and analysis conclusions of the energy consumption data of the enterprise, and pay attention to the description of the overall energy consumption status and change trend. Generally, it includes the energy utilization, line loss, equipment operation, operation and maintenance, energy consumption trend ranking, key energy consumption ranking, comprehensive energy consumption ranking, etc. Through a variety of graphical component configuration, it becomes a user analysis report, so that users can understand the operation of the system, facilitate users to find equipment abnormalities, so as to find out the improvement points, and tap the energy-saving potential according to the energy consumption. 5.4.15. Event recording, event alarm analysis, mainly to provide basis and analysis for the abnormal operation status of the system or the diagnosis and analysis of fault causes. All kinds of alarm times generated during the operation of the system will be automatically recorded and stored, and the query and classification of the target event can be quickly realized through the search query of the occurrence time, range object, type of event, level of event and event description keyword. 5.4.16. Custom report users can flexibly generate various reports through custom report headers and columns, from various energy consumption data and cost comparisons to power peak-to-valley flat reports; From carbon emission report to system energy consumption assessment, from energy consumption indicators to energy consumption budgets, etc., users do not need to edit cumbersomely, and only need simple operations to generate exquisite reports. 5.4.17. The mobile terminal supports Android and iOS operating systems, which is convenient for users to grasp the energy consumption, efficiency analysis, year-on-year analysis, energy consumption discount, energy consumption, operation monitoring, abnormal alarm, etc. 5.4.18. Operating environment (1) Browser running device (2) Desktop computer, tablet and other mobile devices (3) Browser running environment (4) Support Google, Firefox, Sogou, 360 and other mainstream browsers to access (5) Client running device (6) Android mobile device (Android 5.)0 or above), Apple iOS 55. Recommend the selection of on-site equipment (according to the actual needs).
6. ConclusionThe system monitors the energy consumption of various types of energy in real time, and discovers low-energy efficiency equipment in time through the comparison of energy efficiency indicators of the same equipment, so as to optimize the equipment and improve the performance of the equipment; Through the monitoring of operating parameters, all equipment can be operated energy-saving, so as to realize the ideal configuration of energy use and achieve the purpose of energy saving and emission reduction of enterprises. [References].[1] Zhou Bin, Development and Application of Energy Information Management System[J] 2004[2] Ji Zhaohui, Zhou Yi. **Application of energy management system in enterprises[J].Petrochemical Construction,2021,43(S2):150-152[3] Accuray Enterprise Microgrid Design and Application Handbook. 2020.06 editionAbout the Author:
Yi Yunheng, male, bachelor's degree Ankerui Electric Co., Ltd.***'s main research direction is smart grid power supply and distribution.