Xu Shuang Ankerui Electric Co., Ltd., Jiading, Shanghai 201801, China; Abstract: The total area of ​​large-scale public buildings is less than 4% of the total area of ​​urban buildings, but the total energy consumption accounts for 22% of the total electricity consumption of cities and towns in China. The annual power consumption per unit area of ​​large public buildings reaches 70-300KWh, which is ordinary residential buildings. 10 to 20 times. Public buildings are the key to energy conservation and energy conservation. Doing a good job in energy conservation in public buildings is of great significance to promoting and driving energy conservation in the whole society, achieving energy conservation and emission reduction targets, and implementing the major strategy of “transfer mode and structure adjustmentâ€. This paper introduces the Shanghai Taibao Building project, which uses intelligent power meters to collect various electrical parameters of the power distribution site. The system adopts on-site local networking. After networking, it communicates through fieldbus and travels to the background. The Acrel-5000 building energy consumption monitoring system realizes power distribution monitoring and management. Key words: Shanghai Taibao Building; large public buildings; energy consumption monitoring system; ACREL-5000; multi-function instrument; 1 Introduction At present, China is already the world's second largest energy producer and consumer. Statistics show that China's building energy consumption accounts for about 28% of the country's total energy consumption. Of the 2 billion square meters of new buildings built in China each year, 99% of them It is a high-energy building; only 4% of existing buildings have adopted energy-saving measures. Large public buildings not only have high energy density, but also have very serious energy waste. They have huge energy-saving space. The promotion of building energy conservation is imperative, energy conservation and consumption reduction, and measurement first. Relevant local regulations require that “the building energy monitoring system should be included as part of the new construction equipment and facilities system, and be included in the construction planâ€; Shanghai Taibao Building is a large-scale public building, and the design basis of Shanghai energy consumption monitoring is mainly “DGJ68-2068-2012â€. "Technical specifications for energy monitoring in public buildings. 2 Design basis DGJ08-2068-2012 "Shanghai Municipal Public Building Energy Monitoring System Engineering Technical Specification" "Technical Guidelines for Evaluating the Rational Use of Electricity by Enterprises" General Rules for the Preparation of Enterprise Energy Conservation Planning "General Principles of Enterprise Energy Auditing Technology - GB" GBT23331-2009 "Energy Management System Requirements" GB-50052-2009 "Design Specification for Power Supply and Distribution System" Energy consumption metering device national and industry standards DL/T 645-1997 Multi-function Energy Meter Communication Protocol DL/T 645-2007 Multi-function Energy Meter Communication Protocol GB/T 19582-2008 Industrial automation network specification based on Modbus protocol 3 Project Overview The project is located in Yangpu District, Shanghai, east to Songhu Road, west to Guoan Road, north to Guohang Road. The total construction area of ​​the project is about 89,000 square meters. It consists of an apartment-style office building (28 floors), an office building (10 floors) and a commercial podium (3 floors, 4 floors). There are three basements underneath, which are underground shopping malls, pedestrian streets, department stores, restaurants, entertainment. And so on. 4 system architecture The Acre-5000 building energy management system of Ankerui is based on the actual situation of the Shanghai Taibao Building project. The overall network structure is directly connected to the collector of each building fire control center by shielded twisted pair cable, and then the data is uploaded through the network. To the server. The system mainly adopts a hierarchical distributed computer network structure, as shown in the system structure diagram: station management layer, network communication layer and field device layer. The field equipment of Shanghai Taibao Building Project is distributed as follows: 1# floor substation ACR220EL multi-function meter 65; 2# ARC220EL multi-function meter 97 units; Each building substation has its own set of systems, which complete data collection, analysis, display, and data upload to the regional platform. System structure diagram 5 system software module Comprehensive energy consumption display The Acrel-5000 energy management system successfully entered the main page. The main page displays the building picture of the building, the basic information of the building, the electricity pie chart of the building in the month and the consumption of various energy sources. According to the selected building, the building picture is loaded, you can choose time to check the building energy consumption, select the building or time to automatically refresh, the default is the day. Branch energy consumption overview The Acrel-5000 energy management system can query the energy usage according to the branch name of the classified energy consumption, and display the energy peak of the current day and the current month (the maximum demand value of the electric energy), the energy used for the day, the energy used in the current month, and the energy used in the current year. Yesterday's energy consumption, the same period last month, the energy consumption in the same period of the previous year; the bar chart shows the energy consumption of the past 48 hours, 31 days, 12 months, 3 years; the graph shows the 15-minute load Use the energy trend (the meter shows the power curve, the flow meter shows the flow rate curve), and display the current value, the maximum and minimum values ​​within 15 minutes. Branch road energy The Acrel-5000 energy management system can count the daily, weekly, monthly, quarterly, and yearly use of each branch. Select the branch that needs to be queried, click 'Load Data' to view the trend of energy usage of each branch. You can query according to the existing date or custom time, and you can display the total amount of the tributary by chart display. Sub-item energy consumption The Acrel-5000 energy management system can perform energy consumption statistics and display according to sub-items. The daily-use analysis of the daily sub-item shows the daily and yesterday energy consumption histograms for different sub-items (blue bars indicate today, green bars indicate yesterday); energy pie charts show the energy consumption ratio of each sub-item in the past 31 days; The stacked chart shows the energy consumption trend of each item in the past 31 days; the itemized energy ranking chart shows the top 10 branches of the selected item corresponding to the energy consumption value. Item energy The Acrel-5000 energy management system can count the usage of each sub-item day by day, week by week, month by month, quarter by season and year by year. Select the branch that needs to be queried, and 'Load Data' to view the trend of energy usage of each branch in the sub-item, which can be queried according to the existing date or custom time. The branches here are all based on the configuration of the classification items in the basic data. The default query is the energy consumption of the current month. Year-on-year analysis of energy consumption data The Acrel-5000 energy management system can analyze the energy consumption of various types (electricity, water, gas) and major energy-consuming equipment with the same period last year and the previous month value, verify the energy-saving effect, and perform energy-saving according to the analysis results. Performance appraisal and revision of energy saving goals. Chart export The Acrel-5000 Energy Management System exports the results of the analysis, the plotted diagrams, and tables to Excel. User Management The user rights management of the Acrel-5000 energy management system adopts the hierarchical mode, which is the system administrator, logistics management personnel, and equipment maintenance personnel. It automatically records time-lapse events for all operations, and can establish good anti-accident measures. In order to enable real-time systems to operate safely and steadily, the entire system provides reliable security protection. All system operators can assign certain characteristics according to the size of the privilege. These characteristics stipulate the scope of application of each operator to the system and various activities, such as users. Name, password, operation authority and operating range. Configuration options According to the relevant technical specifications, the basic information of the building is configured, for example: building function, building area, air-conditioning area, building address, etc., wherein the building area and other information will be analyzed by energy consumption per unit area; Configure the basic information such as the type, model, and manufacturer of the instrument used in the project, and add the monitoring parameter information that can be provided by the instrument. The configuration here affects the energy consumption statistics, the time-use energy statistics, and the parameter query function. Configure all the meters used in the project, save the address, ratio, corresponding collector, code, name of the monitoring circuit, etc. of the meter; The information about the meter, the proportion, and the calculation method involved in configuring the energy consumption statistics can be flexibly configured according to the project conditions. The configuration information here will affect the functions of the energy consumption sub-items in each category. ; Configure each department to use the corresponding meter, calculation method, proportion and department energy consumption plan. After completing this configuration, the department energy consumption analysis function module will be enabled; Configure the meter, calculation mode, and proportion of a certain energy-using area in the building. After completing this configuration, the area energy analysis function module will be enabled. 6 Prospects According to the analysis of the energy consumption operation effect of the Shanghai Taibao Building project, a typical energy consumption analysis model was established and unified analysis. Establish a building energy consumption measurement system, grasp the building energy consumption, find energy consumption shady, energy-saving transformation is more targeted, and at the same time consolidate the results of energy-saving transformation through management measures such as metering charges and performance appraisal. Select energy-saving equipment (inverter, heat recovery unit). Even the best energy-saving equipment can not afford to save energy. By increasing the automation of energy-saving equipment, formulate equipment operation strategies, reduce human intervention, and centralized control, so that energy-saving equipment is achieving energy conservation. The same-ratio analysis data provided by the energy consumption monitoring system is used to quantify the energy-saving transformation results and show the energy-saving effect. 7 Conclusion The total area of ​​large-scale public buildings is less than 4% of the total area of ​​urban buildings, but the total energy consumption accounts for 22% of the total electricity consumption of cities and towns. The annual electricity consumption per unit area of ​​large public buildings reaches 70-300KWh, which is 10 for ordinary residential buildings. ~20 times. Public buildings are the key energy-saving households and energy-saving priorities. Doing a good job in energy-saving work for the Shanghai Taibao Building project is of great significance to promoting and driving energy-saving work and achieving energy-saving and emission-reduction targets. references: [1]. Technical requirements of the Ministry of Housing and Urban-Rural Development [2].DGJ08-2068-2012 "Shanghai Municipal Public Building Energy Monitoring System Engineering Technical Specification" Foshan Laijian Fitness Equipment Co., Ltd. , https://www.fullgymequipment.com
