One, background According to relevant data, at present, China's domestic building energy consumption has accounted for more than 29 % of the total energy consumption of the whole society , and the proportion of building energy consumption in the future will rise to about 35 %. Among them, colleges and universities are integrated population groups with high population density integrating teaching, research, and life. With the continuous expansion of university scale, the construction area of ​​the campus has been greatly increased compared with the past. Incomplete statistics, there are nearly 3,000 colleges and universities in China , and colleges and universities have gradually become important energy consumers. It is imperative to realize the energy saving of university buildings and build a green and conservation-oriented campus. This paper takes Northeast Agricultural University as an example to discuss the application of campus energy consumption monitoring system. Second, the status quo of campus energy consumption supervision and the importance of establishing energy monitoring system 1 . Energy Consumption Distribution of University Buildings . At present, the majority of universities and colleges in China use electricity, water, and gas for manual management. There are many defects in manual meter reading . Such as data accuracy is not high, real-time performance is poor, poor continuity and so on. The hydropower management department is unable to control the hydropower data and the changes in energy consumption in all regions of the university in real time, making it impossible to make feasible adjustments in time and formulating corresponding management systems. There are many architectural types and functional division areas in higher education institutions. It is mainly composed of the following regions. A variety of energy consumptions coexist in each region. The consumption of electricity and water energy is distributed in each region. The gas distribution region is relatively single and dominated by living areas. Functional division component public area Teaching area, experiment building, administrative office building, training center Living Area Student apartments, canteens, and ancillary services Sports area Gymnasium, event center Public green area Campus greening 2 . Energy monitoring problems. According to the results of research and field survey the situation and each campus energy systems of Northeast Agricultural University analyzed, to optimize energy consumption monitoring requires the following three aspects. (1) Coverage of metering points is not comprehensive : The metering of electricity used by Northeast Agricultural University covers only the transformer room and the total entrance of the building, and there is no measurement of electricity consumption. For water measurement, the total water intake pipe is measured according to the municipal water intake. Only a small part of the secondary water metering point has a water meter, which cannot reflect the energy consumption of the entire school. Need to gradually improve the measurement points to help schools objectively and accurately grasp the status of their own energy resources and consumption, to achieve the first step of fine management, while providing basic data for the development of effective energy-saving measures. (2) The lack of real-time monitoring of energy use systems : The power distribution room is the power center in the campus. At present, only the meter is used to achieve electricity metering. The operating equipment still depends on manual inspection. It is far from meeting the requirements for safe operation. When there are operational failures, equipment aging, etc. At this time, fault isolation cannot be performed in time so that the scope of power outage will not be expanded. There is no monitoring and protection of the power quality of important energy-consuming departments such as laboratories. The need to establish real-time monitoring to ensure the safe operation of energy-using systems. At the same time, the heating system of the northern colleges and universities also needs to run the safety monitoring, can increase the intelligent control, through the electric control valve opening and closing to control the heat, reasonable energy. (3) Measurement statistics rely on labor : The school’s various types of energy consumption statistics rely on labor, and the statistical work methods are relatively simple.  The accuracy of data is affected by human factors, and a large number of paper reports are not easy to save and transfer. It is necessary to enrich the methods of data analysis and improve the accuracy and timeliness, while reducing the manual statistical workload. III. Application of campus energy consumption monitoring system in Northeast Agricultural University 3.1 Project Introduction     Northeast Agricultural University was established in Harbin in 1948. It was called the Northeast Agricultural College. It was the first common higher agricultural university founded by the Communist Party of China in the Liberated Area . Anke Rui Electric Co., Ltd. to undertake the design and construction of energy management systems in the Northeast Agricultural University in September 2009. The remote monitoring of the high-voltage, low-voltage incoming line, capacitance compensation, contact and outlet loops in the power distribution room was realized. Acrel- 5 000 reserved for the energy management system expansion interface, it can be easily expanded.                     Acrel- 5 000 energy management system to achieve the campus energy consumption monitoring of Northeast Agricultural University, the field devices are confined within the same distribution room, the owners of the duty room nearby electrical power distribution arrangements in the next room, the system control center also Placed in the duty room. The system network uses a common three- tier structure, namely station management layer, network communication layer, and field device layer. 3.2 network structure shown in Figure 1 Figure 1   Network structure  The field device layer is mainly connected to various types of meters and protection devices used for the collection and measurement of electrical parameters in the network, and it is also a necessary basic element for constructing the distribution system. The project includes M4/M5 medium voltage protection, ACR series network instrumentation, DTSD three-phase terminal meter, remote water meter, gas meter and cold / heat meter to realize on-site equipment monitoring and management. The network communication layer is composed of a communication server, an interface converter, and a bus network. This layer is a bridge for the exchange of data information.  The station management layer is the manager of the distribution network, and this layer is directly facing the users. This layer is also the uppermost part of the system, which is mainly composed of energy management system software and necessary hardware devices such as computers, printers, and UPS . 3.3 Reference standard v  GB50052-95 Supply and Distribution System Design Specification v  GB50054-95 Low Voltage Distribution Design Specification v  DL/T 698 Energy Information Collection and Management System v GB50198-2005 "Energy-saving Design Standards for Public Buildings" v JGJ176-2009 "Technical Specifications for Energy Saving Reconstruction of Public Buildings" (Industry Code) v DGJ32/TJ11-2010 "Technical Specification for Energy Consumption Monitoring System of Public Buildings" (Jiangsu Province) v DBJ/T14-071-2010 "Technical Specification for Energy-saving Monitoring System of Public Buildings" (Shandong Province) v “Guidelines for the collection of energy consumption data for government office buildings and large public buildings†v “Technical Guidelines for Energy Consumption Data Transfer of Office Buildings and Large Public Buildings by State Organs†3. 4  Device configuration list name Model, specification unit Quantity Note Field device layer Electricity meters, etc. 　 only 600 　 Station control management Workstation host RPC-610 Core2 2.8G/2G/500G + Keyboard station 1 North China Industrial Control monitor 19W " LCD Monitor station 1 AOC UPS power supply MT1000 station 1 SANTAK printer A4 format station 1 　 Console Steel wood structure with a chair set 1 Shanghai Xiangming Energy Analysis Software System Configuration Software Acrel-5000 set 1 Ankerui Energy Analysis Software Data Storage Software Acrel-dbSQL set 1 Ankerui Energy Analysis Software  Energy Management Software Acrel-EnerSys set 1 Ankerui Energy Analysis Software  Device Driver Software Acrel-Driver set 1 Ankerui Energy Analysis Software  Report Analysis Software set 1 Ankerui Energy Analysis Software  Environmental monitoring software set 1 Ankerui Network communication layer Industrial network switch D-LINK 8 port station D-LINK Industrial Serial Server NPORT5630-16 RS485 interface × 16 set MOXA 3.5  Acerl-5000 software interface Acrel-5000 building energy consumption analysis management system energy consumption data collection methods include manual collection methods and automatic collection methods. The data collected through manual collection includes the basic data collection indexes of the building and other energy consumption data that cannot be collected through automatic methods, such as the consumption of coal, liquefied petroleum, artificial gas and other energy consumption. The data collected through automatic collection includes building sub-item energy consumption data and classification energy consumption data. It is collected by the automatic metering device in real time and transmitted to the data center in real time through automatic transmission. PC software uses Acrel-5000 building energy analysis management system , through the software configuration of equipment, database variables configuration, interface design, etc., completed the PC software monitoring and management functions.                                 Figure 2   Real-time monitoring of energy consumption data    Figure 3  Classification, item energy consumption statistics      Figure 4  Analysis of Building Energy Consumption Data Figure 5  Equivalent and Ring Ratio Analysis of Energy Usage 3.6 Acerl-5000 main functions 1 Information Management for Large Public Buildings or Buildings The system provides a standard manual information input interface, which can organize and record the basic information of each monitoring building, and supports the function of manually inputting historical energy consumption data. 2 Real-time monitoring of energy consumption data The system collection station regularly collects the instrument parameters of each monitoring point and uploads it to the database of the local building energy consumption analysis management system. The user can query the energy consumption monitoring situation in real time in the local area. 3 Building Classification Energy Consumption Analysis The system automatically classifies and analyzes building energy consumption, namely: power consumption, water consumption, air consumption (natural gas or gas), central heating, central cooling, cooling, and other energy applications (such as concentrated heat Water supply, coal, oil, renewable energy, etc.) 4 Analysis of the same-ring and ring-to-case ratio of energy use     The hourly usage, daily usage, and annual usage of the energy consumption of buildings or districts are displayed in different ways such as graphs and histograms to support the output of reports. 5 building energy-saving auxiliary diagnosis     The system can extract various energy consumption data for comparison analysis of the same and loops, establish the benchmark value and determine the energy consumption level of each monitoring point's energy consumption, propose a complete diagnosis process for energy consumption improvement, and provide energy consumption analysis. report. Fourth, summary     Through the construction of an energy monitoring system, the process of building a conservation-minded campus has been deepened, and decentralized control and centralized management mechanisms have been set up . The management efficiency and management quality have been greatly improved , and the energy publicity mechanism of the campus has been established, which has promoted the same-level units. Assessment management effectively reduces and limits the irrational consumption of energy and helps achieve sustainable energy conservation. The campus is a full-fledged society. It requires extensive logistics management. The traditional management methods are often inefficient and difficult to achieve. To improve management and energy conservation and strengthen the management of various types of energy consumption, we must rely on modern technology. Campus energy consumption monitoring system is the basis and basis for implementing various energy-saving measures. Through the monitoring of energy consumption and intelligent control, energy consumption analysis, cost accounting, energy saving detection and energy consumption publicity/assessment of the whole school can be realized, and the remote automatic/manual energy use adjustment can be performed in coordination with the management mode. Acrel-5000 Building Energy Analysis Management System is the main component of energy management in Northeast Agricultural University. It plays an important role in the construction of a conservation-oriented campus of Northeast Agricultural University. ã€references】 [1] "Technical Guidelines for the Construction of Energy Efficiency Supervision Systems for Campus Buildings in Colleges and Universities" [2] Implementation Plan for Building Energy Conservation Reform Model Universities [3] "China building energy efficiency Annual Development Report 2011" The flat die pellet machine uses electrical motor as the power source. 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