This paper introduces the application of Acrel-2000 power monitoring software based on network power meter in the distribution monitoring of Dongguan Tianan Digital City. The system realizes intelligent, digital and networked power monitoring for decentralized acquisition and centralized control management. Ni-Cd Battery Emergency Exit Sign
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Yang Junjun
Ankerui Electric Co., Ltd. Shanghai Jiading
1. Project Overview
Dongguan Tianan Digital City, invested and built by Dongguan Tianan Digital City Co., Ltd., is located in Nancheng District, the center of Dongguan New City. It is the “three-fold†project in Dongguan and one of the three billion projects in Nancheng District.
The overall planning of the project covers an area of ​​about 300,000 square meters, with a construction area of ​​1 million square meters and a total investment of 5 billion yuan. The “Tianan Technology Industry Building†series products developed by the park mainly include: research and development and office technology industrial buildings for innovative enterprises, work and leisure facilities for science and technology and management talents, and integration of R&D, testing and light production. , business office, material storage and other functions.
The distribution system of the entire commercial area B has a high and low voltage power distribution room with 4 transformers built in the underground floor of the commercial body; the entire distribution system has more than 103 low voltage feed-out circuits, and the incoming circuit is installed. Network multi-function power meter ACR220ELH, outlet circuit installation network multi-function power meter PZ96L-E4/KC or PZ72L-E4/KC. Monitor the operation of the entire distribution system.
2, user needs
There are too many power distribution circuits in the power distribution room, and there is no long-term meter reading. In order to facilitate centralized management of the entire power distribution system, the commercial power supply system requires a stable and reliable power monitoring system to achieve commercial use. The electricity consumption of the electrical link is monitored.
3, design plan
3.1 Main design reference standards
â— IEC870-1 "General Principles and Guiding Specifications for Telecontrol Equipment and Systems"
â— IEC870-4 "Remote Equipment and System Performance Requirements"
â— IEC870-5 "Remote Equipment and System Transmission Protocol"
â— DL 448-91 "Management Regulations for Electric Energy Metering Devices"
â— ISO/IEC11801 "International Integrated Cabling Standards"
â— GB/50198-94 "Technical Specifications for Monitoring System Engineering"
3.2 System Structure
The entire system is designed with a set of Acrel2000 power monitoring system, which adopts a layered and distributed structure, namely the field equipment layer, network management layer and monitoring management layer.
The field equipment is used to collect the operating parameters of each loop power system, including the telemetry information such as current, voltage and power, as well as the switching status of the circuit breaker and the status of the switch. The network management layer mainly includes the communication management machine, photoelectric conversion equipment, switches, etc. Responsible for the uploading of data and the release of instructions; monitoring management is the core of the whole system, the storage of all data, the display of the operating status of the power system, and the release of control commands are all completed through this part.
The main functions are the main main wiring diagram interface display; event recording, system operation abnormal monitoring; fault alarm and operation record; energy report query and printing; system load query, user authority management and other main functions; telemetry information report query, circuit breaker split Gate status indication, etc.
The network structure of the entire system is shown in Figure 1: .jpg)
Figure 1 system topology
The monitoring center of the whole system is located in the duty room of the power distribution room. The adjacent 25 blocks in the substation are connected to form a bus directly connected to the back of the management center. The local area network of the power monitoring system was built to complete the data transmission.
3.3 Software Design
Acrel-2000 power monitoring software is a special software for collecting and monitoring field instrument data. The system is an intelligent network power monitoring system. The system integrates computer network, communication, database, numerical processing and other modern information technologies. It is a power system. Foundation and important components. The software configuration is flexible, practical, easy to operate, easy to maintain and scalable. It provides a good user development interface and simple engineering implementation method, which can meet the requirements of enterprise energy saving, and can utilize network communication and IT information processing technology to effectively strengthen the internal management of the property and improve the scientific management decision speed and accuracy of the property. degree.
The system is designed according to the actual needs of customers, and realizes functions such as power distribution monitoring, energy report, communication status, events and alarms.
Figure 2 shows the power distribution monitoring interface of the system, which displays the three-phase current, three-phase voltage, active power, reactive power, rate factor and the current circuit breaker circuit breaker and device status of the circuit breaker in real time. Alarm, load over-limit alarm, etc. And an alarm pop-up dialog box is displayed to remind the on-duty personnel to handle the fault in time and reduce the accident rate. .jpg)
Figure 2 Distribution monitoring
Figure 3 shows the power summary report, which lists the energy data of each loop to facilitate customer inquiry and printing. According to the needs of the owner, you can view the daily report, monthly report, and annual report. Clearly understand the power consumption status of each power unit in a certain period of time, and provide data basis for energy saving and emission reduction at the decision-making level. .jpg)
Figure 3 Energy Report
The communication status interface facilitates the administrator to grasp the communication status of the device communication, and discovers the faulty equipment in time to ensure the stable operation of the system. As shown in Figure 4: .jpg)
Figure 4 communication status
4 Conclusion
In today's power distribution facilities, the distribution security of commercial plaza projects is of paramount importance. The application of the Acrel-2000 power monitoring system described in this article in Dongguan Tianan Digital City can realize the power supply and distribution of substation power distribution cabinets. The real-time monitoring of the loop power can not only display the power consumption of the loop, but also have the network communication function, and can form a power monitoring system with the computer. The system realizes the analysis and processing of the collected data, displays the running status of each power distribution circuit in the substation in real time, and has a pop-up alarm dialog box, voice prompts for the load limit, and generates various energy reports, analysis curves, graphics, etc. The remote meter reading, analysis and research of electric energy, the system is safe, reliable and stable, which provides a real and reliable basis for solving the electricity problem of the commercial square project, and has achieved good economic benefits.
references:
[1] "Guidelines and Application Guidelines for Digital Measurement of Electric Power Measurement", Ren Zhicheng, Zhou Zhong, China Electric Power Press
[2] "Application of Power Monitoring System in Power Supply and Distribution Design", Gao Shihong, Technology Wind
About the author: Yang Junjun, female, undergraduate. Position: Now working for Ankerui Electric Co., Ltd., contact number, mobile phone, QQ
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