Luo Xuanzhi
Ankerui Electric Co., Ltd. *** Shanghai Jiading 201801
Abstract:This paper analyzes the application value of smart water system in urban water supply from many aspects, and after introducing the composition and function of the overall framework, information transmission layer, data layer, portal layer and data management platform of urban smart water, this paper expounds the construction and application of urban smart water system, which helps to realize the informatization of urban water management, interconnect with the smart operation and maintenance of water plants, and help the development of urban smart water.
Keywords: smart water system ; urban water supply ; Smart water plant operation and maintenance platform.
1 Introduction. In the process of informatization development, the traditional water management system and model can no longer cope with the many needs of urban water supply, and will cause some unfavorable problems, which will affect the efficiency and quality of urban water supply. The smart water system belongs to the high-end stage of the development of water informatization, and is the future development direction of water affairs, and its advantages and role are beyond doubt. From the perspective of the current construction of smart water system, it mainly relies on cloud computing technology, Internet of Things, big data, mobile Internet, real-time dynamic monitoring system, BIM guardianship information management, GIS geographic information system, 3D printing technology, VR technology, and artificial intelligence. Based on these science and technology, the application scenarios of smart water systems in urban water supply are becoming more and more abundant, which has greatly changed the production and operation of water enterprises. In view of this, it is necessary to further do a good job in the construction and optimization of the smart water system, and give full play to the value of the smart water system in urban water supply.
2 The application value of smart water system in urban water supply.
With the help of cloud computing, radio frequency identification, and the Internet of Things, various infrastructures of water plants can be linked, so as to build an intelligent water system. In addition, the smart water system can automatically collect and analyze data, striving to make the entire water system a brain for timely response and unified command and decision-making [1]. From the perspective of the current construction of the smart water system, it can link refined management, intelligent scheduling and standardization of water supply services to achieve intelligent control and dynamic management of water affairs. In general, the application value of smart water system in urban water supply is mainly reflected in the following aspects (see Figure 1).
Figure 1 Block diagram of the city's smart water system.
Compared with traditional water technology, the smart water system can clearly display the water production process with the help of the Internet of Things, directly overcoming the limitations of manual monitoring, and implementing 24-hour dynamic monitoring of water quality in automatic operation and monitoring, so that technicians can grasp the water quality situation at any time.
With the help of a variety of science and technology, the smart water system has completely changed the way and method of traditional water work, and can make pipe network scheduling more scientific and efficient. From the perspective of the operation of the pipe network optimization and dispatching system, the staff can comprehensively and clearly check the water supply and water consumption of each region by opening the operation platform of the pipe network optimization and dispatching system, and can monitor the water consumption information in real time. By analyzing real-time and historical data, dispatch plans can be quickly optimized to ensure the quality of water for consumers at all times.
With the help of the smart water system, the data acquisition equipment and transmission equipment can monitor the operation of the water system, synchronously integrate the facilities of the water management department, and build the "water Internet of Things".
3 The construction path of urban smart water system.
3.1 General Framework.
The urban smart water system includes two parts, one is the application layer and the other is the user layer. The user layer mainly includes business personnel, management personnel and public personnel, which can realize the automatic collection of information, and the application layer can implement integrated management of water affairs business, so as to improve the scientificity and rationality of urban water affairs work as a whole, and the overall framework of urban smart water affairs system is shown in Table 1.
Table 1 The overall framework of the urban smart water system.
3.2. Information collection and transmission layer.
The Internet of Things is the core technology of the information collection and transmission layer of the smart water system, with the support of the Internet of Things, it can dynamically monitor the urban water resources information in real time with the help of data acquisition modules, network equipment, and field instruments, so that all factors of the urban water supply can be interconnected, ensure the timely supply of urban water, and develop in the direction of informatization and efficiency.
3.3 Data layer.
In the whole urban water supply smart water system, the data layer is the core, containing a large amount of data information, and it is also the information of the smart water system. In order to give full play to the value of the smart water system, it is necessary to focus on the construction of complete infrastructure and databases, enhance the level of resource integration of the data layer, and provide good basic conditions for the development of water affairs [3]. In the context of accelerating urbanization, in the process of further developing the smart water system, it is necessary to do a good job in data mining of water business and apply the smart water system to urban water supply.
3.4 Portal Layer.
From the perspective of the current construction of the smart water system, the portal layer can be divided into two types, one is the industry portal, and the other is the public information portal. At the same time, business personnel can communicate with other business personnel with the help of the industry portal to ensure that all water affairs work is carried out in an orderly manner and enhance the service capabilities of the smart water system. It is worth mentioning that the established public information portal can provide a channel for urban users to consult, and users can obtain water information in a timely and dynamic manner and participate in water construction.
3.5 Data management platform.
The main reason for establishing a data management platform is that it can organize and store data information in the smart water system, on the one hand, to ensure the development of water affairs, and on the other hand, to provide data support for the water affairs work of relevant departments. From the perspective of the application of the data management platform of the current smart water system, the integration of data can be carried out from two aspects. Through data integration, the integrity of data information storage can be ensured, and the backup and storage of data information can be completed Through data integration, the intensive management of data can be realized, and the storage space can also be saved, which is conducive to reducing the storage cost of data information.
4 Application of smart water system in urban water supply.
4.1. Give full play to the advantages of relevant science and technology.
In order to ensure that the smart water system can be well used in urban water supply, it is necessary to give full play to the advantages of relevant science and technology and continuously enhance the application effect of the smart water system.
In the process of applying cloud computing technology, we can seek to improve the consumption mode and service model of the smart water system, from the previous "purchase of software and hardware products" to "provision and purchase of IT services". In the application of the Internet of Things, efforts should be made to connect the water business with relevant departments and facilities, realize information exchange and communication, and lead the water industry to achieve "smart upgrading".
Big data plays an important role in the smart water system, which can better integrate and process water information, and can realize the combination of traditional structured data management mode and unstructured data management mode of water work, and promote the continuous development of smart water system.
In the application of real-time dynamic monitoring system, it is necessary to focus on the monitoring of water pollution events, on the one hand, it is necessary to monitor the water supply and drainage situation in real time, and on the other hand, it is necessary to investigate the potential risks in a timely manner, so as to effectively realize the real-time tracking of water quality information.
GIS also plays a good role in the smart water system, especially for the digital management and visual management of the basic data resources of the pipe network [5]. Specifically, GIS can give full play to the advantages of 3D simulation technology to display the details of underground pipelines, overcoming the limitations of poor overlap and strong concealment in the previous pipeline network management process.
Artificial intelligence is one of the keys to the development of smart water systems, and the functions of fault diagnosis, optimized design, and intelligent detection are all missing from smart water systems. It can be said that with the help of artificial intelligence, the application of smart water systems in the field of water affairs will become more and more extensive, changing the production concept and operation mode of water enterprises.
4.2. Establish a smart service platform for water supply management.
In the process of using the smart water system, it is necessary to consider the use of network technology and digital technology to establish a smart service platform for urban water supply management and form a digital water supply management system. Through the establishment of an intelligent service platform for urban water supply management, on the one hand, it can realize first-class monitoring and resource sharing, and on the other hand, it can provide a lot of convenience for the staff to carry out water business. It should be noted that when establishing a smart service platform for urban water supply management, it is necessary to give more consideration to the actual living needs of urban residents, and provide more humanized and convenient services to residents with the help of smart service platforms [6].
4.3. Establish an information resource system.
The information resource system has a great impact on the application of the smart water system, and it is necessary to consider the use of a variety of science and technology to optimize the information resource system, especially the use of the Internet of Things, big data, artificial intelligence and other technologies. For example, in the process of using big data technology, it is necessary to do a good job in the collection and processing of water information, establish a basic information database, and continuously enhance the support capacity of the information resource system for the smart water system.
4.4. Implement the construction of a smart water plant operation and maintenance platform.
In order to make the smart water system more digital and intelligent, it must be fully integrated into the management of the water plant, and the construction of the operation and maintenance platform of the smart water plant must be implemented. In the construction of the smart water plant operation and maintenance platform, the key points should be placed in three aspects: digital three-dimensional; inspection and equipment management system; Water plant production operation and maintenance management and energy consumption monitoring and energy saving analysis. For example, in the inspection and equipment management system, it is necessary to implement dynamic monitoring of the operating equipment of the water plant, grasp the dynamic operation information, and realize the management of the complete life cycle [7]. For another example, when carrying out the production operation and maintenance management of water plants and energy consumption monitoring and energy saving analysis, it is necessary to carry out comprehensive treatment of the production and operation, data modeling, process optimization, energy consumption indicators and fault diagnosis of water plants, so as to ensure that the urban water supply is in a stable and fast state and provide users with high-quality water.
5 Acrelems-SW Smart Water Energy Efficiency Management Platform.
5.1 Platform Overview.
Acrelems-SW smart water energy efficiency management platform is used to monitor the total energy consumption and energy intensity of the sewage plant, monitor the energy efficiency of the main energy-using equipment, protect the reliable operation of the sewage plant, improve the energy efficiency of the sewage plant, and provide scientific and refined solutions for the energy efficiency management of sewage treatment by installing protection, monitoring, analysis and treatment devices at each key node of the source, network, load, storage and charging of the sewage plant.
5.2 platform composition.
Acrelems smart water integrated energy efficiency management system is composed of substation integrated automation system, power monitoring and energy efficiency management system, covering water medium voltage substation and distribution system, emergency power supply, energy management, lighting control, equipment operation and maintenance, etc., throughout the water energy flow, helping operation and maintenance managers through a set of platforms, an APP to understand the operation status of the water distribution system in real time, and according to the authority can be applied to the management needs of the water logistics department.
5.3. Platform topology diagram.
5.4. Platform subsystem.
5.4.1. Integrated automation system and power monitoring of substation.
The 35kV and 10kV voltage levels in the water distribution system are equipped with relay protection and arc protection to realize the functions of telemetry, remote signaling, remote control, remote adjustment, etc., and timely warning of abnormal conditions.
Monitor the current, voltage, active and reactive power, power factor, load rate, temperature, three-phase balance, abnormal alarm and other data of transformers, pumps and blowers.
5.4.2. Power quality monitoring and management.
A large number of high-power motors and pumps in the water industry have a large number of harmonics in the distribution system, and the power quality of the distribution system is analyzed by monitoring the harmonic distortion, voltage fluctuation, flicker and tolerance indicators, and the corresponding power quality treatment measures are configured to improve the power quality of power supply.
5.4.3. Motor management.
Motor monitoring realizes the protection, telemetry, remote signaling and remote control functions of the motor in water affairs, and the motor protector can protect, monitor and alarm abnormal conditions such as overload, short circuit, phase loss, and leakage. Quickly and accurately reflect the fault status, fault time, fault location, and related information, and carry out health diagnosis and preventive maintenance of the motor. At the same time, it supports cooperation with PLC, soft start, inverter, etc., to realize automatic or remote control of the motor, monitor and control each process equipment, and ensure normal production.
5.4.4. Energy consumption management.
Build a metering system for water utilities to display the energy flow direction and energy loss of water utilities, and help water utilities analyze the direction of energy consumption and find out abnormal energy consumption areas through energy flow diagrams.
Gather all energy-related parameters in a dashboard, compare and analyze from multiple dimensions, realize the comparison of energy consumption of each process link, and help leaders control the energy consumption, energy cost, standard coal emissions and other conditions of the entire plant.
The energy consumption data statistics collect the electricity, water, gas, cold and heat consumption of sewage plants, waterworks, water pumping stations, etc. in the water industry, compare and analyze the year-on-year comparison, calculate the total energy consumption and energy intensity, calculate the standard coal and the statistical trend of CO2 emissions.
Energy efficiency analysis is carried out according to the best metering structure, respectively, in line with the requirements of the energy management system, and the energy efficiency level of each workshop functional department can be analyzed, year-on-year, month-on-month, benchmarking, etc. Through the sewage treatment output and the energy consumption data collected by the system, the trend chart of sewage unit consumption is generated in the sewage unit consumption, and the year-on-year and month-on-month analysis is carried out, and the unit consumption of sewage is benchmarked with the industry, country and international advanced indicators, so that enterprises can adjust the production process according to the unit consumption of products, so as to reduce energy consumption.
5.4.5. Intelligent lighting control.
The system provides lighting control and management solutions for sewage plants, water plants, water pumping stations, etc., and supports single control, area control, automatic control, induction control, timing control, scene control, dimming control and other control methods.
5.4.6. Electrical safety.
Electrical fire monitoring: monitor the leakage current and cable temperature of the distribution system circuit, and realize the electrical safety early warning of sewage plants, water plants, and pumping stations.
Fire emergency lighting and evacuation instructions: quickly start the evacuation plan according to the pre-set emergency plan and guide the evacuation of personnel. The system is connected to the data of the fire emergency lighting indication system, and the working status and abnormal conditions of the evacuation indicator lamps are displayed through the floor plan.
Power supply monitoring of fire-fighting equipment: monitor whether the working power supply of fire-fighting equipment is normal to ensure that fire-fighting equipment can be put into use normally in the event of a fire.
Fire door monitoring system: The fire door monitoring system centrally controls the working status of its terminal equipment, namely the fire door monitoring module, electric door closer and electromagnetic releaser, monitors the opening, closing and fault status of the fire door of the evacuation channel in real time, and displays the fault signals such as open circuit and short circuit of the terminal equipment. The system adopts two fire buses to connect the monitoring modules with communication functions with each other, when the terminal equipment is short-circuited, broken circuit and other faults, the fire door monitor can send out an alarm signal, can indicate the alarm part and save the alarm information, and ensure the reliability of electrical safety.
5.4.7 Environmental monitoring.
Sewage plants, water plants, pumping stations and other places of temperature and humidity, smoke, water immersion, **UPS battery combustible gas concentration display and early warning, to ensure the safe operation of sewage plants, water plants, pumping stations, etc. When the concentration of combustible gas or harmful gas exceeds the standard, the exhaust fan or fresh air system can be automatically started to eliminate hidden dangers and maintain a good water treatment environment.
5.4.8. Distributed photovoltaic monitoring.
Real-time monitoring of electrical parameters such as current, voltage, power and circuit breaker switching status of each low-voltage grid-connected cabinet, inverter operation monitoring, monitoring of the input DC voltage, DC current, DC power, inverter AC voltage, AC current, frequency, power factor, current power generation, cumulative power generation of each photovoltaic string on the DC side of the inverter monitoring, and drawing the historical data of each parameter of the above monitoring in the form of curves.
Combined with the actual distribution of the plant, the platform passes 3D or 2The 5D floor plan shows the distribution of distributed photovoltaic modules on roofs and carports, the location of combiner boxes and grid-connected points, and the installed capacity of each roof.
5.4.9. Process monitoring.
The platform monitors the operation status of process equipment such as coarse grid, sewage lifting, fine grid, aeration and sedimentation, improved biochemical treatment, secondary sedimentation, chlorination contact disinfection, sludge concentration and filtration, biological deodorization and other process equipment in real time through 2D and 3D methods. Install motor protection in low-voltage motor control cabinets or low-voltage feeder cabinets such as grid slag removers, sewage lifting pumps, return pumps, aeration fans, dosing pumps, thickener filter presses, sand suction pumps, mud suction pumps, etc., to carry out short circuit, overcurrent, overload, starting overtime, phase failure, unbalance, low power, grounding leakage, TE protection, stalled rotor, reverse sequence, temperature and other protection, as well as external fault chain shutdown, and PLC, soft start, inverter, etc., to realize automatic or remote control of the motor, monitor and control various process equipment, Ensure normal production.
6. Selection list of relevant platform deployment hardware.
7 Conclusion. There is no doubt about the application effect and advantages of smart water system in urban water supply, which is very beneficial to promoting the standardization, scientificity and efficiency of water affairs. In order to give full play to the greatest advantages of the smart water system, it is necessary to pay attention to the application of relevant science and technology, help smart water to achieve informatization, solve the development dilemma of the water industry, and help the development of urban smart water. In the construction of the operation and maintenance platform of the smart water plant, it is necessary to do a good job in the planning of smart water, strive to interconnect with the water plant, realize the real-time acquisition and sharing of information, and lay a good foundation for the development of urban water supply.
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