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 in cities and towns in China. The annual consumption of large-scale public buildings per unit area reaches 70 to 300KWh, which is an average residential building. 10 to 20 times. Public buildings are important for energy conservation and energy conservation. To do a good job in energy conservation in public buildings is of great significance to promoting and stimulating energy conservation in the entire society, achieving energy conservation and emission reduction targets, and implementing the major strategy of “turning modes and adjusting structuresâ€. This article describes the Shanghai Taibao Building Project and uses smart power meters to collect various electrical parameters at the distribution site. The system adopts the on-site local networking method. After networking, it communicates via the field bus and transmits it to the background. The Acrel-5000 building energy consumption monitoring system realizes power monitoring and management of the distribution circuit. Keywords: Shanghai Taibao Building; large-scale public buildings; energy consumption monitoring system; ACREL-5000; 1 Introduction At present, China is already the world’s second largest energy producer and consumer. According to statistics, China’s building energy consumption accounts for about 28% of the country’s total energy consumption. In China’s newly built 2 billion square meters of buildings, 99% of which are It is a high-energy-consuming building; only 4% of the existing buildings have adopted energy-saving measures. Large-scale public buildings not only have high energy density, but also have very serious energy waste. They have huge space for energy conservation. The promotion of building energy-saving is imperative, and energy saving and consumption reduction are the first measures. The relevant local regulations require that “the building energy consumption monitoring system should be included as part of the new construction equipment and facilities system and included in the construction planâ€; Shanghai Taibao Building belongs to large-scale public buildings, and Shanghai energy consumption monitoring and design basis is mainly DGJ68-2068-2012. 》Technical specifications for public buildings can be monitored. 2 Design basis DGJ08-2068-2012 Shanghai Municipal Public Building Energy Monitoring System Engineering Technical Specification "Evaluating the rational use of electricity technology guidelines GB" "General Rules for the Preparation of Energy-saving Planning for Enterprises" "General Principles of Energy Auditing for Enterprises - GB" GBT23331-2009 Energy Management System Requirements GB-50052-2009 "Power Supply and Distribution System Design Specifications" Energy consumption measurement device national and industrial standards DL/T 645-1997 Multifunctional 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 of Shanghai, east to Songhu Road, west to Guo'an Road and north to Guohang Road. The project has a total construction area of ​​approximately 89,000 square meters. It consists of an apartment-style office building (28 storeys), an office building (10 storeys) and a business podium (3 storeys and 4 storeys). There are three basements underneath, which are underground shopping malls, pedestrian malls, department stores, restaurants, and entertainment. Etc. 4 System Architecture Acrel-Acrel-5000 building energy management system is networked according to the actual situation at the site of Shanghai Taibao Building. The overall network structure is directly connected to the collector of the fire control center of each building using shielded twisted pairs, and 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 control management layer, network communication layer and field device layer. The field equipment of Shanghai Taibao Building project is distributed as follows: 1# building substation ACR220EL multi-function instrumentation 65; 2# building substation ACR220EL multifunction instrument 97 sets; Each building substation has its own set of systems to complete data collection, analysis, display and data upload to the regional platform. System structure 5 System Software Module Comprehensive energy consumption display The Acrel-5000 energy management system has successfully entered the main page. The main page shows the architectural image of the building, the basic information of the building, the electricity consumption pie chart of the construction month, and the consumption of various energy sources. According to the selected building, loading the building picture, you can select the time to view the energy consumption of the building, automatically refresh after selecting the building or time, the default is the day. Branch energy consumption Acrel-5000 energy management system can query the energy use status according to the branch name of the classified energy consumption, display the peak energy usage (the maximum demand value of energy corresponding to the energy) of the current day and the current month, the current day energy use, the current month energy use, the current year energy use and Comparison of energy consumption in the same period of the same period of last month, energy consumption in the same period of the previous month, and energy consumption in the same period of the previous year; energy consumption of the past 48 hours, 31 days, 12 months, and 3 years in a bar graph; 15 minutes of load in a graph Energy use trend (meter shows power curve, flow meter shows velocity curve), and shows the current value, the maximum and minimum values ​​within 15 minutes. Branch energy Acrel-5000 energy management system can count the daily, weekly, monthly, quarterly, yearly energy use of each branch for a certain period of time. Select the branch to be queried and click 'Load Data' to view the energy consumption trend of each branch. You can query according to the existing date or custom time, and display the total energy usage of the branch in a graphical format. Itemized energy consumption profile Acrel-5000 energy management system can perform energy statistics and display according to the items. The daily energy consumption graph shows the energy consumption histograms of the different days on the same day and yesterday (blue bars show today, green bars show yesterday); the energy pie chart shows the energy consumption of each sub-item over the past 31 days; The stacked chart shows the energy consumption trend of each item in the past 31 days; the breakdown by energy ranking shows the top 10 branches of the selected item corresponding to the energy consumption value. Energy use by item Acrel-5000 energy management system can count the daily, weekly, monthly, quarterly, yearly energy use of each item in a certain period of time. Select the branch to be queried, 'Load data' to view the energy trend of each branch in the sub-item, and query 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. Energy consumption data year-on-year loop analysis The Acrel-5000 energy management system can compare the energy consumption of various types (electricity, water, gas) and major energy-consuming equipment with the previous year's same period value and previous month's value, and test the energy saving effect, and perform energy saving according to the analysis results. Performance appraisal, and amendments to energy conservation goals. Chart export The Acrel-5000 Energy Management System exports the results of the analysis, the graphs drawn, and the tables to Excel. User Management Acrel-5000 energy management system uses a hierarchical model for user rights management. It is a three-level system administrator, logistics manager, and equipment maintenance personnel. It automatically records all operations with time-stamp events and can establish good anti-accident measures. In order to make the real-time system work safely and stably, the entire system provides reliable security protection measures. All system operators can assign certain characteristics according to the size of the authority. These characteristics stipulate the scope of application of each operator to the system and various activities, such as the user. Name, password, operating authority and operating range. Configuration options According to the relevant technical specifications, the basic information of the building is configured, such as: building function, building area, air conditioning area, building address, etc., in which the building area and other information will be used to analyze 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 this type of instrument. Here, the configuration affects the energy consumption statistics, statistics of energy consumption over time, and parameter query functions; All metering instruments used in the configuration project, save metering instrument address, transformation ratio, corresponding collector, code, monitoring circuit name and other information; The information related to metering, proportioning, and calculation methods involved in configuring itemized energy consumption statistics can be flexibly configured according to the situation of the project. The configuration information here will affect the energy consumption analysis of each classification. ; Configure the measuring instruments, computing methods, proportions, and department energy plans for each department's energy use. After completing this configuration, the department's energy consumption analysis module will be enabled. Configure the meter, calculation method, and proportion of an energy use area in the building. After completing this configuration, the regional energy consumption analysis module will be enabled. 6 Outlook According to the analysis of the energy consumption operation effect of Shanghai Taibao Building Project, a typical energy consumption analysis model was established and analyzed. Establish a building energy consumption measurement system, grasp the energy consumption of buildings, discover the shady energy consumption, and make more energy-saving changes. At the same time, we must consolidate the achievements of energy-saving reforms through management measures such as measurement fees and performance assessment. Select energy-saving equipment (inverter, heat recovery device). No matter how good the energy-saving equipment is, it cannot control the energy-saving effect even if it cannot control the waste. By increasing the automation energy-saving equipment, formulating equipment operation strategies, reducing human intervention, and centralizing the control, the energy-saving equipment is achieving energy-saving. Through the same-ring analysis data provided by the energy consumption monitoring system, the results of energy-saving transformation are quantified to demonstrate energy-saving effects. 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 in the country's cities and towns. The annual consumption of large-scale public buildings per unit area reaches 70 to 300KWh, which is 10 for ordinary residential buildings. ~ 20 times. Public buildings are important for energy conservation and energy conservation. Doing a good job of energy conservation in the Shanghai Taibao Building project is of great significance in promoting and stimulating energy conservation and achieving energy conservation and emission reduction targets. En Flanges,Carbon Welding Neck Flange,Welded Flange,Forged Steel Flanges Zhangqiu Xinhao Machinery Parts Factory , https://www.xhflange.com
