Summary:At present, the construction of a conservation-oriented society is vigorously promoted, and the energy consumption management of large public buildings has become a focus of social concern, among which the representative is the management and control of hospital energy efficiency. Therefore, combined with the design content of the energy consumption supervision platform of a general hospital in Sichuan, the specific composition of the system is described, hoping to improve the overall digital management level and energy efficiency of the hospital through the establishment of the platform system.
Keywords:energy consumption supervision platform; building energy efficiency; Consumption reduction management.
0 Introduction. The high density of hospitals and the gradual increase in the public's requirements for the treatment environment and air quality will inevitably cause the cost of the hospital to increase year by year in terms of energy consumption and operation and maintenance. In this regard, a notice was jointly issued on the construction of the implementation plan for the pilot construction of the hospital building energy consumption supervision system. In order to effectively do a good job in the construction of energy-saving hospitals.
1. Construction goals.
In 2014, the general hospital was rated as a demonstration unit of a batch of energy-saving public institutions, and in order to highlight its demonstration effect, it is necessary to further improve the overall energy-saving level of the hospital and play a pioneering role in the society. It can not only reduce the comprehensive operating cost of the hospital, but also enhance the competitiveness of the hospital, and at the same time can serve as a model for other hospitals in Sichuan Province and even the scope of the hospital to carry out energy management.
2. System scheme design.
The design of the project was based on the overall planning of the hospital, which needed to be able to support manual entry, automatic supplementation, and interface with other systems. It is necessary to make full use of the existing data of the hospital to obtain complete hospital energy consumption data, manually or automatically collect and measure all kinds of energy consumption in the hospital, and analyze and sort out data to assist daily operation and maintenance and help management make effective decisions. The system is mainly displayed and analyzed from the following aspects.
2.1Energy consumption at a glance.
The energy consumption overview function provides the hospital logistics management team with an intuitive, accurate and complete data information analysis window, through which users will directly understand the most commonly used energy performance indicator data. The energy consumption overview function mainly includes:
1) A brief introduction of the hospital, such as the size of the hospital, the construction area, the number of beds, the annual electricity consumption, the annual water consumption, etc.
2) Electricity consumption calendar, according to the hospital's energy consumption or energy efficiency indicators to evaluate the current energy use, energy consumption calendar with different colors marked, a total of 3 levels: less than the average, close to the average and greater than the average.
3) 24-hour real-time energy consumption trend chart, showing the energy consumption curve of the day, the optional energy types are electricity, water (cold water, hot water), medical gas (carbon dioxide, oxygen, laughing gas), and the daily display can view the daily 24-hour energy consumption.
4) * Electricity consumption, water consumption (cold water and hot water), medical gas consumption (carbon dioxide, oxygen and laughing gas) and the month-on-month and month-on-month growth rate decreased, and the energy consumption trends of the three types of energy were analyzed and compared with the previous period.
2.2. Energy consumption map.
By importing the building navigation map, the system can see the information and overall energy consumption of each building by moving the mouse. Click to enter, you can see the detailed energy consumption of each floor area in the building.
The system provides users with the following area information:
1) Basic information of the building, including the layout of the building floor department, the installation location of the instrument, etc.
2) Building energy consumption information, including the daily consumption of building floors and departments, daily water consumption and other data.
2.3. Energy consumption statistics.
The energy consumption statistics are mainly defined in accordance with the technical guidelines for the construction of hospital building energy consumption supervision system and the technical guidelines for the operation and management of hospital building energy consumption supervision system, and the system can classify and manage energy data according to building categories.
By classifying the energy consumption trends and report components of buildings, the main distribution characteristics of hospital energy consumption can be analyzed, and the attributes of different buildings have a strong correlation with energy consumption. The analysis of energy consumption of classified buildings can help hospitals grasp the distribution of energy consumption at the most important points.
The classification of energy consumption includes electricity, water, medical gas consumption, etc., the energy consumption * sub-items include lighting, air conditioning, power, special, etc., and the secondary energy consumption sub-items include indoor lighting, landscape lighting, sockets, refrigeration hosts, chiller pumps, ventilators, elevators, etc. Other dimensions of energy consumption include hospital equipment, air-conditioning systems, departments, etc., as well as various indicators of energy consumption. The system analyzes and displays the energy consumption of different sub-items on different sub-pages, including sub-item electricity consumption, sub-item water use, *point equipment, air-conditioning system, classified buildings, building water, department energy consumption and medical gas, etc.
Equipment: The system conducts real-time monitoring of the energy consumption equipment, and can analyze the energy consumption of its long-term operation.
Building energy consumption: Building energy consumption is mainly classified and counted for 16 buildings in the hospital, and the energy consumption levels and rules of different types of buildings are analyzed, which are displayed in the form of trend charts, year-on-year, month-on-month, and reports.
Department energy consumption: The system customizes the dimensions of departments (non-surgical departments, operating departments, medical and technical auxiliary departments, cadre medical and geriatric departments) according to the needs of the hospital, and analyzes the energy consumption level and law of each department, which is displayed in the form of trend charts, year-on-year, month-on-month, and reports.
Medical gases: Collect the consumption statistics of major medical gases (oxygen, laughing gas, carbon dioxide) in different functional areas, and display them in the form of trend charts, year-on-year, month-on-month, and reports.
2.4. Energy consumption analysis.
Based on the analysis function of the time dimension, you can query the energy consumption ranking of departments and classified buildings. And provide quick time query, such as the current day, this week, and this month's energy consumption ranking. The energy flow diagram is used to display the energy consumption trend of each building, and the error analysis of the data is used to formulate a comparison and analysis module for manually entering the charging energy consumption data and the system collecting data.
Department ranking: The system conducts ranking and trend analysis of electricity consumption according to the dimensions of the hospital's customized departments (non-surgical departments, operating departments, medical and technical auxiliary departments, cadre medical and geriatric departments), and the ranking can be based on energy consumption increment, energy consumption increment and other indicators, and the ranking basis can be modified in the mode selection.
Energy consumption ranking: Mainly for the ranking and trend analysis of classified buildings, point equipment and water energy consumption, the ranking can be based on energy consumption increase, energy consumption increment and other indicators, and you can modify the ranking basis in the mode selection.
Energy flow analysis: energy flow analysis shows the direction of energy consumption in the form of energy flow diagram, helps users find the main energy consumption path, determines the energy saving rectification work * point object: calculates the loss and percentage of energy in the process of storage, transmission and use, and timely finds the loss caused by electricity theft, etc., the energy flow analysis module mainly analyzes the error of electricity and water in the building area of the hospital, and can switch the comparison of the * level energy consumption and the secondary energy consumption of each building, and can also switch the energy consumption type.
Data comparison: In order to test and compare the accuracy of the data collected by the energy consumption system, the system collects the power data of the general meter of the municipal power supply company, the water consumption data of the general meter of the water company, and the gas consumption data of the general meter of the gas company through manual entry, and compares the manually entered municipal energy consumption data with the data collected in the hospital by using the data comparison module, so as to provide a true and accurate data comparison error rate.
2.5. Energy consumption report.
The system provides the report templates commonly used in hospitals, and customizes and edits custom report templates according to the needs of hospitals, and can automatically generate different data reports by selecting data dimensions, report templates and time dimensions. At the same time, the system provides report editing tools to design the report, bind the data source, save the custom report as a template, and then import it into the system for display. The cost statistics of energy consumption can be output in the report after setting the corresponding unit price according to the energy consumption data. The system also provides cost reports that are commonly used in hospitals.
2.6. Meter management.
Instrument management can view the communication status, real-time data and recording time of each instrument device, and the meter management can also be used as a meter reading tool to support the output of year, month, and meter meters. In the instrument management interface, a single instrument can be managed, 27. Manual entry.
Manual entry is for some data that cannot be automatically collected, such as business volume data, municipal electricity energy consumption data, municipal natural gas energy consumption, municipal water supply data, etc., the system will decompose the entered data into every hour, keep the same collection frequency as other energy consumption data, and automatically include it in the system for calculation.
2.8. Energy consumption alarm.
The system provides flexible and rich alarm management functions to set limits for real-time energy information and statistical information, and provides logistics team managers to manage pre-set alarm events to improve safety and energy efficiency.
Users need to monitor the energy consumption of some buildings, regions and sub-items by setting limits in real time, and the system will notify the relevant personnel through mobile phone text messages and other ways to remind the relevant personnel to intervene in time and reduce the waste of energy.
1) Confirm the alarm event, when the event is generated, the relevant responsible person needs to confirm the event to ensure that the event notification is in place, and the relevant responsible person can take measures to find out the cause of the alarm after confirming the alarm event and solve it.
2) View the alarm events, the system will statistically classify the alarm events, and users can search for events through filter conditions.
3) Alarm setting, the system can set the limit value for any dimension such as region and sub-item, and set up the ** and email address of the relevant responsible person, and send the alarm information to the relevant responsible person through real-time alarm to achieve the purpose of energy consumption monitoring.
2.9. System management.
The system management includes several modules of instrument user authority configuration, dimension management, file management, code management and uploading to the platform of the Health and Family Planning Commission. User permission configuration sets different browsing permissions and data management permissions according to the on-duty personnel, administrators, and engineers Set the basic information of the personnel, including name, email address, etc., so that the system can send reports or alarm information to the user's mobile phone and mailbox. Dimension management is used to create, configure, and modify dimensions, and for each node of the dimension, you can choose direct association of instruments or formula association.
Coding management: The format of the code is strictly in accordance with the requirements of the Technical Guidelines for the Construction of Hospital Building Energy Consumption Supervision System (Trial), which can be coded for hospital building information and energy data, and can be flexibly set and modified.
3acrelmed hospital energy management platform.
3.1 Overview.
Combined with industry norms such as "Code for Electrical Design of Medical Buildings", "Evaluation Standards for Green Hospital Buildings", "Technical Guidelines for the Construction of Energy Consumption Supervision System for Hospital Buildings", according to the needs of hospital users and the requirements of the energy management department, collect and analyze energy, energy consumption and energy efficiency data, monitor power quality, smart electricity consumption related indicators and other energy consumption indicators, and combine them with the national energy policy and energy consumption mode reform.
3.2 platform composition.
The energy management system of Ankerui Hospital establishes an integrated energy management system of "monitoring, control and maintenance" based on the cloud platform, which helps the hospital logistics management department to understand the energy operation of the hospital, pay attention to fire protection and electrical safety, timely warn of abnormal situations, and improve operation and maintenance efficiency from the design of data collection, equipment control, data analysis, abnormal warning, operation and maintenance dispatch, system architecture and comprehensive data services.
Integrated 10kV O4KV substation power monitoring system, substation operation and maintenance cloud platform, power distribution room integrated monitoring system, energy consumption management system, intelligent lighting control system, smart fire platform, electrical fire monitoring system, fire equipment power monitoring system, fire door monitoring system, fire emergency lighting and evacuation indication system, charging pile management system, power quality management solution, medical isolation power supply solution.
3.3. Platform topology diagram.
3.4. Platform subsystem.
3.4.1. Hospital power monitoring solution.
The power monitoring system realizes the functions of monitoring, measuring, recording and alarming transformers, diesel generators, circuit breakers and other important equipment, and communicates with the protection equipment and remote control center and other equipment, grasps the operation status of the power supply system and possible hidden dangers in real time, quickly eliminates faults, and improves the reliability of hospital power supply.
The power monitoring system is mainly aimed at the opening and closing station and 10 0The 4kV substation is equipped with microcomputer protection devices and multi-functional instruments for the protection and monitoring of the high-voltage circuitThe 4KV outlet line is equipped with a multi-functional metering instrument for measuring and controlling the electrical parameters and energy consumption of the outlet circuit. At the same time, the status of the hospital's most important equipment such as diesel generators, reactive power compensation devices, active filter devices, UPS, and isolated power supply systems is monitored.
3.4.2. Cloud platform solution for operation and maintenance of hospital substation.
The ACREL1000 power O&M cloud platform uses multi-functional power sensors, wireless communications, edge computing gateways, and big data analysis technologies to collect on-site data through intelligent gateways, store them locally, and then push data to the cloud platform on a regular basis. The data collected by the platform includes the electrical parameters of the substation circuit and the temperature of the transformer, the ambient temperature and humidity, the immersion, the smoke, the access control and other information, and the alarm signal is sent through SMS and APP within 10s of the abnormality. The platform issues O&M tasks to the staff's mobile phones through the mobile app, and tracks the O&M execution process through GPS for closed-loop operation, improving O&M efficiency, and finding and eliminating operational defects in real time.
3.4.3. Integrated monitoring system solution for hospital power distribution room.
The integrated monitoring system of ACREL power distribution room can realize switchgear operation monitoring, high-voltage switchgear live display, bus and cable temperature measurement monitoring, environmental temperature and humidity monitoring, harmful gas monitoring, security monitoring, and linkage control of lights, fans, dehumidifiers, air conditioning control and other equipment.
3.4.4. Hospital energy management system solution.
Real-time measurement of energy consumption data of various types of energy-consuming equipment in buildings, statistics and analysis of collected data. It can reasonably determine the economic indicators and performance appraisal indicators of building energy consumption in each department, find out the law of energy use and energy waste, and improve the awareness of personnel to actively save energy.
Energy consumption competition ranking: energy consumption comparison of various departments, energy consumption ranking, and enhance the energy conservation awareness of the staff of the hospital;
Energy efficiency ratio in the same period: realize the comparison of energy consumption in the same year, the same period and the same region, which is convenient for energy-saving data analysis;
Regional energy efficiency ratio: realize the comparison of regional energy consumption within the building unit, and facilitate the assessment of energy consumption;
Build the basic framework of the hospital's smart energy management system to monitor each energy consumption link in real time;
Energy consumption data collection, query at any time, and statistical analysis according to the collected data, monitor abnormal energy consumption, alarm the failure of energy intelligent meters, and improve the level of system informatization and automation.
Carbon emission data: The system can analyze the per capita energy consumption (including water, electricity, and energy) in the building unit, and realize the data of low-carbon office;
Energy consumption assessment and management: Analyze the energy consumption per unit area and per capita energy consumption index according to the energy consumption quota standard constraint value, standard value and guide value;
The use of energy consumption data for comprehensive analysis, statistics, printing and query functions, and according to the needs of the energy consumption monitoring and management system, different styles of reports can be selected. Provide a reliable basis for energy consumption operation and management departments;
3.4.5. Hospital intelligent lighting control system solutions.
The hospital is relatively dense, there are many departments, and the electricity consumption for lighting accounts for about 15% of the hospital's electrical energy consumption. Therefore, the rational use of lighting control system, in the case of improving the experience of doctors and patients, the use of natural light lighting to a large extent, through induction control to achieve people to turn on the lights, people to go off the lights or maintain the intensity of lighting, as far as possible to solve the lighting electricity.
ASL1000 intelligent lighting control system can realize a variety of control methods such as scene control, time control, area control, illuminance sensing control and infrared sensing control, which can effectively avoid lighting waste in public areas and help hospitals manage lighting.
The modules installed in the control site mainly include illuminance sensors, infrared sensors and smart panels. Some people can set infrared induction to control the lights on, and the lights will be turned off within the set time after the person leaves, and the manual control equipment such as smart panels can realize the combination of automatic control, on-site control and remote control in the duty room.
3.4.6. Hospital smart fire platform solutions.
Based on modern information technologies such as the Internet of Things, big data, and cloud computing, the smart fire cloud platform connects scattered automatic fire alarm equipment, electrical fire monitoring equipment, smart smoke detectors, smart fire water and other equipment to form a network, and intelligently perceives, identifies and locates the status of these equipment, collects fire information in real time, and conducts data analysis, mining and trend analysis through the cloud platform to help achieve the goals of scientific early warning of fire, grid management, and implementation of multi-responsibility supervision.
From fire prevention, to fire alarm, to control linkage, operating in the system platform, users, security personnel, and supervision units can intuitively see the operation status of various fire-fighting equipment and sensors in each building through the platform, and can quickly notify the relevant personnel in the event of emergency and non-emergency situations such as hidden dangers and fires in a few seconds.
3.4.7. Hospital electrical fire monitoring system solutions.
As an early warning subsystem of the automatic fire alarm system, the electrical fire monitoring system is composed of an electrical fire monitoring host, an electrical fire monitoring unit, a residual current electrical fire detector and a temperature measuring electrical fire detector.
The electrical fire monitoring system of the hospital is set up in the building unit, and the data is collected and uploaded to the monitoring host of the duty room to realize the early warning of building electrical safety. The sensors set up on site monitor the leakage current and cable temperature of the distribution system circuit, send out alarm signals in real time when abnormal, and pay attention to problems such as leakage or cable heating in outpatient buildings, inpatient buildings, medical technology buildings and other areas.
3.4.8. Solutions for power monitoring system for hospital fire-fighting equipment.
The main function of the power monitoring system of fire-fighting equipment is to monitor whether the working power supply of fire-fighting equipment is normal, so as to ensure that the fire-fighting equipment can be put into use normally in the event of a fire.
The power monitoring and monitoring system of fire-fighting equipment adopts two fire-fighting buses, and sets up a regional extension to collect the power supply status of fire-fighting equipment in the building, and the regional extension receives the voltage, current information and switching status information of multiple sensors through the two buses, so as to realize real-time monitoring of the power supply working status of fire-fighting equipment.
3.4.9. Hospital fire door monitoring system solution.
The number of hospital fire doors is relatively large, because there are often people walking around in some areas, the number of normally open and normally closed fire doors is a lot, the role of the fire door monitoring system is to monitor the opening and closing status of the fire door, and automatically close the normally open fire door after the fire to prevent smoke from spreading. The fire door monitoring system adopts the fire two bus to connect the monitoring modules with communication function to each other, which is used to monitor and control the state of the fire door, when the abnormal position signal of the fire door occurs, the fire door monitor can send out a fault alarm signal, indicate the fault alarm position and save the fault alarm information. In the event of a fire, close all normally open fire doors in the accident area to prevent smoke from spreading to the safety area.
3.4.10. Hospital fire emergency lighting and evacuation indication system solutions.
The hospital has strong personnel mobility, high density, and complex fire protection. The fire emergency lighting and indication system can be linked with the fire alarm system to provide emergency lighting and evacuation path indication, guide the crowd to quickly find the evacuation exit, and can select the evacuation emergency plan with the * key to improve the escape probability of personnel.
3.4.11. Hospital active harmonic control system solution.
They are all harmonic sources, such as X-ray machines, CT machines, etc., which will produce a large number of harmonics, which reduce the efficiency of the production, transmission and utilization of electrical energy, overheat the electrical equipment, produce vibration and noise, and make the insulation age, shorten the service life, and even fail or burn out. Harmonics can cause local parallel resonance or series resonance of the power system, which amplifies the harmonic content and causes capacitors and other equipment to burn out. Harmonics can also cause malfunctions of relay protection and automatics, causing confusion in energy metering. For hospitals, there may be interference with the laboratory.
In order to eliminate the influence of harmonics in the distribution system on the hospital equipment, the scheme is equipped with an ANSINI active filter to filter out the 31st harmonic interference of the power grid 2.
ANSINI series active power filter device, connected to the power grid in parallel mode, through real-time detection of the harmonic and reactive components of the load, using PWM converter technology, from the converter and the current harmonic component and reactive component corresponding to the reverse component and injection into the power system in real time, so as to achieve harmonic control and reactive power compensation.
3.4.12 hospital charging pile system solutions.
There are electric cars and e-bikes in the hospital parking lot, both of which require charging stations. The charging pile management system conducts uninterrupted data collection and monitoring of the charging pile site and each charging pile in the access system through the Internet of Things technology, solves the problem of charging pile use and monitoring of the property and electricity management departments, and at the same time warns of various faults such as over-temperature protection of the charger, over-voltage of the input and output of the charger, under-voltage, insulation detection fault, etc.; It can be controlled remotely, providing functions such as financial statements and data analysis.
3.4.13. Hospital Medical Isolation Power Supply Solution.
Code for Electrical Design of Civil Buildings 147.6.Article 3 clearly stipulates that after a sudden interruption of the power supply, the power supply method of ungrounded (IT system) shall be adopted in places with major medical dangers. At the same time, the "Technical Code for the Construction of Clean Operating Departments of Hospitals" GB50333-2002 stipulates that medical IT systems should be used in Class 2 medical places to maintain the lives of patients, and surgical operations and other electrical devices located around patients should be used. Such as: rescue room (outpatient operating room), operating room, cardiac monitoring room, catheter intervention room, vascular imaging examination room, etc.
The medical isolation power supply solution of Ankerui Electric Co., Ltd. is developed and designed for the power supply needs of medical places, which can well meet the requirements of power supply safety and reliability of various operating rooms and critical care rooms, and meet relevant national standards.
Conclusion. The coordination and cooperation of several modules such as energy consumption summary, energy consumption map, energy consumption statistics, energy consumption analysis, energy consumption report, instrument management, energy consumption alarm, system management, etc., can collect and measure all kinds of energy consumption in the hospital, and analyze and sort out the data, assist in daily operation and maintenance and help the management make effective decisions, and can also greatly improve the level of intelligent management of the hospital, and effectively improve the energy efficiency of the hospital, which has a good demonstration role in the area to which the hospital belongs.