Design of Electric Energy Management System of Heilongjiang Soybean Dairy R & D Center of Northeast Agricultural University
0 Introduction With the rapid development of the national economy and social progress, higher education has received the attention and attention of the whole society, and the scale of school-running has also expanded with the increase in the number of educated people. In order to enable students to have a good learning environment, the school has made great efforts in the teaching facilities and apartment conditions of the campus. However, due to the open management mode of the university campus, many college energy conservation measures only focus on behavior management and energy conservation publicity and education. In the application of strengthening the adoption of new humanized technologies, the lack of energy-saving awareness of many students has led to a serious waste. With the continuous expansion of the scale of colleges and universities, the campus area, the number of students, and the number of faculty and staff have increased dramatically. The public expenditures of colleges and universities have been greatly improved compared with the past. It is mainly manifested in the waste of electric energy. 
4.2 The active energy data collected by the report statistics system automatically generates reports according to the different loop names and has the function of report printing. It can query and print the electricity consumption in a certain period of time of a loop, and these reports can also Excel format export. 
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In view of the above problems and the status quo, this paper proposes to use the network power management instrument and Acrel-3000 configuration software of Ankerui to develop a centralized monitoring system for high and low voltage power distribution in colleges and universities.
1 Project Overview The power management system of Heilongjiang Soybean Dairy R&D Center is a power distribution system of a new campus of Northeast Agricultural University. The monitoring scope of this project is the total incoming line of low-voltage power distribution room and the instruments of each floor, including Ankerui smart meter 503. Taiwan, this system mainly emphasizes the monitoring and control of real-time data, mainly for the entire process of intelligent monitoring of the entire distribution system reliability, data analysis, and statistics on the electrical energy used in each loop.
2 User requirements According to the actual situation of the site, the new core substation power distribution management department proposes the following system requirements: 1. The field instrument must realize the real-time display function: the voltage, current and energy monitoring information is refreshed in real time, and is intuitive in one graph. Dynamic display.
2. The field data report must meet the automatic generation of daily, weekly and monthly reports, and has the function of export printing.
3. It is possible to alarm the communication status or abnormal power consumption of each monitoring point, so that the management personnel can grasp and analyze the distribution operation in real time.
3 Design Scheme According to the site requirements, Ankerui Electric Co., Ltd. designed the Acrel-3000 power management software for the Heilongjiang Soybean Dairy R&D Center. The following is a detailed description of the Acrel-3000 power management software parameters.
3.1 Acrel-3000 compliant standard The energy management system of the Heilongjiang Soybean Dairy R&D Center is based on the current national and power industry effective standards. The Chinese standard is not included in the IEC latest standards and specifications. If there is a contradiction between the standards, the higher standards shall prevail.
The system is designed to meet the manufacturing and test standards listed below: JGJ/T 16-92 "Code for Electrical Design of Civil Buildings" GB/J63-90 "Design Specification for Electrical Measuring Instruments for Electric Installations" DL/T698-1999 "Technical Conditions for Centralized Meter Reading System for Low-Voltage Power Users" DL/T645-1997 "Multi-function Energy Meter Communication Protocol" GB2887 "Technical Requirements for Computing Station Sites" GB/50198-94 "Monitoring System Engineering Technical Specification" 3.2 Network Structure Topology A total of 182 ACR network power meters and PZ three-phase energy meters are used in the underground two-story power distribution room. The ground eight-floor power distribution box uses ADL100 and ADL300 for a total of 321 instruments. 32 shielded twisted pairs are connected to two 16-port serial servers. The serial server collects data through the switch. The networking of the field instruments to the serial server is shown in Figure 1 and Figure 2:
4 System function According to the on-site system requirements, Ankerui Electric Co., Ltd. has designed the system interface and function of the project in a targeted manner. The specific display interface is as follows: 4.1 System main interface power distribution interface: intuitive dynamic in one graph Displaying monitoring information such as voltage, current, power and frequency is shown in Figure 3:
4.3 Communication status The system monitors the communication status of all points on the site. The red and green colors respectively represent the normal and abnormal communication of the instrument, which is convenient for the user to check the communication status of each monitoring point, as shown in Figure 5:
5 Operation effect Acrel-3000 power management system solves the problem that the monitoring is not in place. For the campus electrical equipment, the target area is omni-directional and all-weather 24 hours in real time. Any equipment that does not meet the normal operation sound and light. Call the police. This energy-saving monitoring system includes three parts: energy saving, intelligent monitoring, and burglar alarm. The system cooperates with the power-saving device to realize the working power data of the active power, reactive power, current, voltage and the like of the power equipment under the control of the power-saving device, and transmits the data through the automatic wireless transmission system. Make energy saving intelligent, automated and standardized.
6 Conclusion University campus power-saving work is a long-term work, but also a complex work, there are many problems worthy of our study, discussion and reform. The smooth and effective development of power-saving work requires the school's electricity management department to actively cooperate with the relevant departments of the school, work together to guide the students, actively guide the students to participate, form a good energy-saving atmosphere, and lead the overall situation of energy-saving work with a scientific development concept. We will do a good job in energy conservation, improve the awareness of energy conservation among all teachers and students, and do everything possible to save resources and make greater contributions to the sustainable development of the country and universities.
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