This article makes a brief introduction to the Shanghai International Medical Center's power distribution monitoring system. This system uses intelligent power meters to collect various electrical parameters and switching signals from the power distribution site. The system adopts the on-site local networking mode. After the network is connected, it communicates through the field bus and travels to the background. The real-time monitoring of the power distribution circuit of the substation is realized through the Ankerui distribution monitoring system.
Yang Junjun
Ankerui Electric Co., Ltd., Shanghai Jiading
0 Preface
The smart grid is a hot spot for the development of new technologies and new industries at home and abroad. According to the smart grid research framework system, the smart grid construction mainly captures six links of power generation, transmission, substation, power distribution, power consumption and dispatch. The “Power Distribution†link is the grid user terminal. The user end consumes 80% of the power of the entire power grid. The intelligent power management of the user terminal is of great significance to the user's reliability, safety and power saving. Build a smart electricity service system, comprehensively use smart meters and intelligent power management terminal equipment to achieve two-way benign interaction between the power grid and users. The Shanghai area has initially built a regional energy consumption platform. Through the large-scale commercial buildings in various regions and the energy consumption data uploaded by public buildings, the energy consumption of the entire region is grasped in real time, and the energy consumption of each end user in the region is guided. Reasonably allocate energy trends, cultivate users' awareness of rational use of electricity, standardize the energy use of regional users, and provide corresponding data basis for penalties for vicious loads and irrational energy use.
The Ankerui Power Distribution Monitoring System is a user-side power distribution monitoring system developed for the above trends. The system measures some important circuits in the substation of Shanghai International Medical Center. Through the real-time measurement, storage and analysis of the electricity consumption of the monitoring circuit, the power consumption status of the entire measurement system is displayed in the form of a table or a graph. High energy consumption points or unreasonable energy use habits, in order to effectively save energy, users provide accurate data support for further energy-saving renovation or equipment upgrade.
This article takes Shanghai International Medical Center as an example to briefly introduce the application of Ankerui Power Distribution Monitoring System in the distribution system of Shanghai International Medical Center.
1 Project introduction
Shanghai International Medical Center (SIMC) is located in the International Hospital District of Shanghai International Medical Park in Pudong New Area. It is a surgical, internal medicine, obstetrics and gynaecology, pediatrics, ophthalmology, otolaryngology, stomatology, medical beauty, endoscopic center. Comprehensive international hospitals in the Department of Reproductive Centers, Health Checkups, etc., with 450 beds, including 100 ICUs and HDUs. The ward will be dominated by single rooms and double rooms, and will be introduced into the "3H" (Hospital Hospital, Hotel, Home) medical model to provide a warm international standardization service. The hospital will be operated by Singapore Parkway Medical Group and is scheduled to be operational on March 28, 2014 and officially opened in June.
This project mainly focuses on the real-time monitoring of power data in the incoming circuit and feeder circuit in the 1# and 2# substations of the International Medical Center, and then sorts and sorts the relevant building energy consumption classification and classification. The data is uploaded according to the requirements of the Pudong Public Building Energy Consumption Platform.
2 User requirements
1 Standard variable power distribution system has CAD one-line diagram showing the wiring of medium and low voltage distribution network: the huge system has the function of multi-screen switching and picture navigation; the distributed power distribution system has the main picture of the system with spatial geographic plane. The main screen can display the operating status of each loop and has the function of loop charging and non-motor fault coloring. The main electrical parameters are directly displayed on the human-computer interaction interface and refreshed in real time.
2 software can give different levels of users different permissions, thus ensuring the security and reliability of the system during operation.
3 Monitoring information such as voltage, current, power, power factor and frequency is refreshed in real time and displayed visually and dynamically in a single graph. The information of each electrical parameter, circuit name, CT ratio, current limit value and switch state of the circuit is displayed on each circuit sub-picture, and data forwarding and uploading can be realized.
4 draw a current trend curve for its load to facilitate analysis of the loop distribution operating conditions
5 over-limit alarm, set the over-limit alarm for the customer's specific loop
6 pairs of power conversion functions of each loop, and automatically generate electricity reports that meet customer management needs
7 Alarm event records, which are convenient for maintenance personnel to maintain the circuit according to the nature of the event.
8 systems can be remotely networked after being published on the Web and accessible via the Internet.
Part of the system's energy consumption data must be uploaded to the Shanghai Pudong regional energy consumption platform.
3 design plan
3.1 Reference Standard
The system is designed to meet the manufacturing and testing standards listed below:
JGJ/T 16-92 "Electrical Design Code for Civil Buildings"
GB/J63-90 "Design Specification for Electrical Measuring Instruments for Electrical Installations"
GB/T13730 "General technical conditions for regional grid data acquisition and monitoring systems"
GB2887 "Technical Requirements for Computing Station Sites"
GB/50198-94 "Technical Specifications for Monitoring System Engineering"
DL/T 698.31-2010 Part 3.1: Technical Specifications for Power Information Collection Terminals - General Requirements
DL/T 698.35-2010 Part 3-5: Technical specification for power information collection terminal - Particular requirements for low-voltage centralized meter reading terminal
DL/T 698.41-2010 Part 4-1: Communication Protocol - Communication between the primary station and the energy information collection terminal
DL/T 698.42-2010 Part 4-2: Communication Protocols - Concentrator Downlink Communication Protocol
DL/T/814-2002 "Functional Automation System Functional Specifications"
3.2 system architecture design
In view of the scale and nature of the Shanghai International Medical Center and the nature of the subsequent development of the follow-up project, the system department of Ankerui Electric Co., Ltd. based on the needs of users and the experience in the same nature of the project, the intelligence of the building The construction of the distribution system is designed as follows: All the monitoring points of the Shanghai International Medical Center are now equipped with intelligent power meters, and all adopt the standard Modbus-RTU protocol. The smart meters installed on site are connected by hand through the shielded twisted pair cable, and the data bus is directly laid to the duty room where the host is located. The data bus transmits data to the system host through the data collector. System diagram 1 is shown.
figure 1
4 system function
The PC software adopts the power distribution monitoring system independently developed by Ankerui, and completes the functions of software monitoring and power monitoring in the host computer through software configuration, database variable configuration and interface design.
4.1 Features
Ankerui power distribution monitoring system adopts full Chinese interface, which is easy to operate and stable and reliable. Click the corresponding shortcut button to enter the corresponding system function module; the system has a system diagram display, simulation diagram display and network structure diagram display; the system has a friendly man-machine interface, and the display data is intuitive and convenient for users to consult.
4.2 System function introduction:
4.2.1 Login interface
The software interface can be designed according to the characteristics of the project and the requirements of the customer. The initial interface is “Login Interfaceâ€. Select the user name and enter the corresponding password to enter the viewing data. Otherwise, the data cannot be viewed. The interface is shown in Figure 2.
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Figure 2 login interface
4.2.2 Communication diagram
The communication diagram is a topology diagram showing whether the communication between the system and the instrument is normal. Red indicates normal communication and green indicates communication is interrupted. The interface is shown in Figure 3.
Figure 3 Communication
4.2.3 Distribution System Diagram
The power distribution system diagram shows the overall architecture of the entire power distribution system, which is convenient for management personnel to quickly understand the organization structure of the power distribution system. The power parameter data displayed in real time by the parameter interface can reflect the operation status of the power distribution system. The power distribution system interface is shown in Figure 4, and the detailed parameters are shown in Figure 5.
Figure 4
Figure 5
The distribution, operating state and main electrical parameters of the entire power distribution system can be seen from Fig. 4 and Fig. 5. The main electrical parameter data includes three currents, three voltages, the credit of the incoming loop, electrical energy, power factor, circuit name, and the corresponding electrical parameters of the loop.
4.2.4 Electrical Parameters Report
The main data of the electric parameter report include: three-phase voltage, three-phase current, electric energy, active power, reactive power, power compensation factor, frequency.
The report can realize functions such as meter reading at any time during system operation, and display the display data of each meter in the form of a report, select the corresponding cabinet, and then select the time to be queried to display voltage, current, active power, Reactive power, power compensation factor, frequency. The interface is shown in Figure 6.
Figure 6
Report printing: print the data of the current report;
Data Save: Export the current report to the selected location in an Excel spreadsheet.
4.2.5 Energy Report
The energy report will be presented in the form of power distribution circuit power consumption report. This report can realize monthly meter reading, daily meter reading, hour meter reading and other functions in any period of time during system operation, and select the loop as shown in the figure below. Time and end time, click the "Query" button to display the power consumption during this time period, or export or print in Excel format. The interface is shown in Figure 7.
Figure 7
4.2.6 Current curve
Current is an important power parameter of the power distribution system. The system designs a current curve for the important loop. This curve can set the query time, and can also arbitrarily enlarge and reduce the curve in a certain interval, so that the management personnel can accurately grasp the running state of the system. The interface is shown in Figure 8.
Figure 8
4.2.7 Real-time alarm and historical alarm
The system also targets the telemetry of the main electrical parameters (including the current, voltage, frequency, power factor of the incoming loop and the current crossing alarm of the outgoing loop). You can also click to open the history alarm to call up the historical alarm interface. Real-time alarms are mainly divided into telemetry and remote signaling real-time alarms.
The alarm function can help the manager locate the fault location in the shortest time, improve the troubleshooting efficiency, and ensure the long-term stable operation of the power distribution system.
5 Conclusion
With the increase in the intelligent management requirements of the customer-side power distribution system. The power distribution monitoring system has become an inevitable choice for power distribution users. The application of the Ankerui Power Distribution Monitoring System in the Shanghai International Medical Center project can realize real-time monitoring of the distribution system of Shanghai International Medical Center. It displays the operating status of each loop of the power distribution system, the network communication function of the system, and data sharing with the upper data platform. The system analyzes and processes the collected data, displays the power usage status of each power distribution circuit in the substation, and displays the pop-up alarm dialog box and alarm sound prompts, and generates various energy reports, analysis curves, graphics, etc. It is convenient for remote meter reading of electric energy and analysis, research and development of corresponding energy assessment mechanism. The system is safe, reliable and stable, and solves the problem of unclear specific power consumption of each distribution circuit for the end users of the distribution system. It provides a real and reliable basis for the maintenance of the power system and the formulation of energy-saving measures.
references
[1] "Guidelines and Application Guidelines for Digital Measurement of Electric Power Measurement", Ren Zhicheng, Zhou Zhong, China Electric Power Press
[2] "Design and Implementation Technology of Intelligent Building Control System", Li Lianye, Zhu Weidong, Li Wei, Tsinghua University Press
[3] "Smart grid customer terminal power monitoring and distribution monitoring system product selection and solution", Zhou Zhong, Beijing. Mechanical Industry Press.
About the author: Yang Junjun, female, undergraduate. Position: Now working for Ankerui Electric Co., Ltd., contact number, mobile phone, QQ
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Yang Junjun
Ankerui Electric Co., Ltd., Shanghai Jiading
0 Preface
The smart grid is a hot spot for the development of new technologies and new industries at home and abroad. According to the smart grid research framework system, the smart grid construction mainly captures six links of power generation, transmission, substation, power distribution, power consumption and dispatch. The “Power Distribution†link is the grid user terminal. The user end consumes 80% of the power of the entire power grid. The intelligent power management of the user terminal is of great significance to the user's reliability, safety and power saving. Build a smart electricity service system, comprehensively use smart meters and intelligent power management terminal equipment to achieve two-way benign interaction between the power grid and users. The Shanghai area has initially built a regional energy consumption platform. Through the large-scale commercial buildings in various regions and the energy consumption data uploaded by public buildings, the energy consumption of the entire region is grasped in real time, and the energy consumption of each end user in the region is guided. Reasonably allocate energy trends, cultivate users' awareness of rational use of electricity, standardize the energy use of regional users, and provide corresponding data basis for penalties for vicious loads and irrational energy use.
The Ankerui Power Distribution Monitoring System is a user-side power distribution monitoring system developed for the above trends. The system measures some important circuits in the substation of Shanghai International Medical Center. Through the real-time measurement, storage and analysis of the electricity consumption of the monitoring circuit, the power consumption status of the entire measurement system is displayed in the form of a table or a graph. High energy consumption points or unreasonable energy use habits, in order to effectively save energy, users provide accurate data support for further energy-saving renovation or equipment upgrade.
This article takes Shanghai International Medical Center as an example to briefly introduce the application of Ankerui Power Distribution Monitoring System in the distribution system of Shanghai International Medical Center.
1 Project introduction
Shanghai International Medical Center (SIMC) is located in the International Hospital District of Shanghai International Medical Park in Pudong New Area. It is a surgical, internal medicine, obstetrics and gynaecology, pediatrics, ophthalmology, otolaryngology, stomatology, medical beauty, endoscopic center. Comprehensive international hospitals in the Department of Reproductive Centers, Health Checkups, etc., with 450 beds, including 100 ICUs and HDUs. The ward will be dominated by single rooms and double rooms, and will be introduced into the "3H" (Hospital Hospital, Hotel, Home) medical model to provide a warm international standardization service. The hospital will be operated by Singapore Parkway Medical Group and is scheduled to be operational on March 28, 2014 and officially opened in June.
This project mainly focuses on the real-time monitoring of power data in the incoming circuit and feeder circuit in the 1# and 2# substations of the International Medical Center, and then sorts and sorts the relevant building energy consumption classification and classification. The data is uploaded according to the requirements of the Pudong Public Building Energy Consumption Platform.
2 User requirements
1 Standard variable power distribution system has CAD one-line diagram showing the wiring of medium and low voltage distribution network: the huge system has the function of multi-screen switching and picture navigation; the distributed power distribution system has the main picture of the system with spatial geographic plane. The main screen can display the operating status of each loop and has the function of loop charging and non-motor fault coloring. The main electrical parameters are directly displayed on the human-computer interaction interface and refreshed in real time.
2 software can give different levels of users different permissions, thus ensuring the security and reliability of the system during operation.
3 Monitoring information such as voltage, current, power, power factor and frequency is refreshed in real time and displayed visually and dynamically in a single graph. The information of each electrical parameter, circuit name, CT ratio, current limit value and switch state of the circuit is displayed on each circuit sub-picture, and data forwarding and uploading can be realized.
4 draw a current trend curve for its load to facilitate analysis of the loop distribution operating conditions
5 over-limit alarm, set the over-limit alarm for the customer's specific loop
6 pairs of power conversion functions of each loop, and automatically generate electricity reports that meet customer management needs
7 Alarm event records, which are convenient for maintenance personnel to maintain the circuit according to the nature of the event.
8 systems can be remotely networked after being published on the Web and accessible via the Internet.
Part of the system's energy consumption data must be uploaded to the Shanghai Pudong regional energy consumption platform.
3 design plan
3.1 Reference Standard
The system is designed to meet the manufacturing and testing standards listed below:
JGJ/T 16-92 "Electrical Design Code for Civil Buildings"
GB/J63-90 "Design Specification for Electrical Measuring Instruments for Electrical Installations"
GB/T13730 "General technical conditions for regional grid data acquisition and monitoring systems"
GB2887 "Technical Requirements for Computing Station Sites"
GB/50198-94 "Technical Specifications for Monitoring System Engineering"
DL/T 698.31-2010 Part 3.1: Technical Specifications for Power Information Collection Terminals - General Requirements
DL/T 698.35-2010 Part 3-5: Technical specification for power information collection terminal - Particular requirements for low-voltage centralized meter reading terminal
DL/T 698.41-2010 Part 4-1: Communication Protocol - Communication between the primary station and the energy information collection terminal
DL/T 698.42-2010 Part 4-2: Communication Protocols - Concentrator Downlink Communication Protocol
DL/T/814-2002 "Functional Automation System Functional Specifications"
3.2 system architecture design
In view of the scale and nature of the Shanghai International Medical Center and the nature of the subsequent development of the follow-up project, the system department of Ankerui Electric Co., Ltd. based on the needs of users and the experience in the same nature of the project, the intelligence of the building The construction of the distribution system is designed as follows: All the monitoring points of the Shanghai International Medical Center are now equipped with intelligent power meters, and all adopt the standard Modbus-RTU protocol. The smart meters installed on site are connected by hand through the shielded twisted pair cable, and the data bus is directly laid to the duty room where the host is located. The data bus transmits data to the system host through the data collector. System diagram 1 is shown.
figure 1
4 system function
The PC software adopts the power distribution monitoring system independently developed by Ankerui, and completes the functions of software monitoring and power monitoring in the host computer through software configuration, database variable configuration and interface design.
4.1 Features
Ankerui power distribution monitoring system adopts full Chinese interface, which is easy to operate and stable and reliable. Click the corresponding shortcut button to enter the corresponding system function module; the system has a system diagram display, simulation diagram display and network structure diagram display; the system has a friendly man-machine interface, and the display data is intuitive and convenient for users to consult.
4.2 System function introduction:
4.2.1 Login interface
The software interface can be designed according to the characteristics of the project and the requirements of the customer. The initial interface is “Login Interfaceâ€. Select the user name and enter the corresponding password to enter the viewing data. Otherwise, the data cannot be viewed. The interface is shown in Figure 2.
Figure 2 login interface
4.2.2 Communication diagram
The communication diagram is a topology diagram showing whether the communication between the system and the instrument is normal. Red indicates normal communication and green indicates communication is interrupted. The interface is shown in Figure 3.
Figure 3 Communication
4.2.3 Distribution System Diagram
The power distribution system diagram shows the overall architecture of the entire power distribution system, which is convenient for management personnel to quickly understand the organization structure of the power distribution system. The power parameter data displayed in real time by the parameter interface can reflect the operation status of the power distribution system. The power distribution system interface is shown in Figure 4, and the detailed parameters are shown in Figure 5.
Figure 4
Figure 5
The distribution, operating state and main electrical parameters of the entire power distribution system can be seen from Fig. 4 and Fig. 5. The main electrical parameter data includes three currents, three voltages, the credit of the incoming loop, electrical energy, power factor, circuit name, and the corresponding electrical parameters of the loop.
4.2.4 Electrical Parameters Report
The main data of the electric parameter report include: three-phase voltage, three-phase current, electric energy, active power, reactive power, power compensation factor, frequency.
The report can realize functions such as meter reading at any time during system operation, and display the display data of each meter in the form of a report, select the corresponding cabinet, and then select the time to be queried to display voltage, current, active power, Reactive power, power compensation factor, frequency. The interface is shown in Figure 6.
Figure 6
Report printing: print the data of the current report;
Data Save: Export the current report to the selected location in an Excel spreadsheet.
4.2.5 Energy Report
The energy report will be presented in the form of power distribution circuit power consumption report. This report can realize monthly meter reading, daily meter reading, hour meter reading and other functions in any period of time during system operation, and select the loop as shown in the figure below. Time and end time, click the "Query" button to display the power consumption during this time period, or export or print in Excel format. The interface is shown in Figure 7.
Figure 7
4.2.6 Current curve
Current is an important power parameter of the power distribution system. The system designs a current curve for the important loop. This curve can set the query time, and can also arbitrarily enlarge and reduce the curve in a certain interval, so that the management personnel can accurately grasp the running state of the system. The interface is shown in Figure 8.
Figure 8
4.2.7 Real-time alarm and historical alarm
The system also targets the telemetry of the main electrical parameters (including the current, voltage, frequency, power factor of the incoming loop and the current crossing alarm of the outgoing loop). You can also click to open the history alarm to call up the historical alarm interface. Real-time alarms are mainly divided into telemetry and remote signaling real-time alarms.
The alarm function can help the manager locate the fault location in the shortest time, improve the troubleshooting efficiency, and ensure the long-term stable operation of the power distribution system.
5 Conclusion
With the increase in the intelligent management requirements of the customer-side power distribution system. The power distribution monitoring system has become an inevitable choice for power distribution users. The application of the Ankerui Power Distribution Monitoring System in the Shanghai International Medical Center project can realize real-time monitoring of the distribution system of Shanghai International Medical Center. It displays the operating status of each loop of the power distribution system, the network communication function of the system, and data sharing with the upper data platform. The system analyzes and processes the collected data, displays the power usage status of each power distribution circuit in the substation, and displays the pop-up alarm dialog box and alarm sound prompts, and generates various energy reports, analysis curves, graphics, etc. It is convenient for remote meter reading of electric energy and analysis, research and development of corresponding energy assessment mechanism. The system is safe, reliable and stable, and solves the problem of unclear specific power consumption of each distribution circuit for the end users of the distribution system. It provides a real and reliable basis for the maintenance of the power system and the formulation of energy-saving measures.
references
[1] "Guidelines and Application Guidelines for Digital Measurement of Electric Power Measurement", Ren Zhicheng, Zhou Zhong, China Electric Power Press
[2] "Design and Implementation Technology of Intelligent Building Control System", Li Lianye, Zhu Weidong, Li Wei, Tsinghua University Press
[3] "Smart grid customer terminal power monitoring and distribution monitoring system product selection and solution", Zhou Zhong, Beijing. Mechanical Industry Press.
About the author: Yang Junjun, female, undergraduate. Position: Now working for Ankerui Electric Co., Ltd., contact number, mobile phone, QQ
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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