This paper introduces the enterprise complex of Sevis Glass Co., Ltd., through the Acrel-5000 building energy consumption monitoring system to realize the real-time monitoring of the distribution circuit electricity and on-site gas meters and flow meters.
Yang Junjun
(Ankerui Electric Co., Ltd., Shanghai 201801)
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 consumption monitoring system should be included as part of the new construction equipment facility system and included in the construction plan; Sevis Glass Co., Ltd. is a large public building. The design basis for Shanghai energy consumption monitoring is mainly “DGJ68-2068- 2012" public building energy monitoring engineering technical specifications.
2 Design basis
DGJ08-2068-2012 "Shanghai Municipal Public Building Energy Monitoring System Engineering Technical Specification"
GB-T 15587-2008 "Energy Management Guidelines for Industrial Enterprises"
"Technical Guidelines for Evaluating the Reasonable 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"
â—†Energy measurement 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
CJ/T 188-2004 Household metering data transmission technical conditions
GB/T 19582-2008 Industrial automation network specification based on Modbus protocol
3 Project Overview
SEVES SpA Group is the world's leading manufacturer of glass insulators and glass bricks. The company introduces and adopts world-class glass forming equipment, as well as advanced technology and management. The company is committed to providing quality glass insulators to meet the growing market demand at home and abroad.
The field equipment in the project is located in the first to third floors of the plant. It is necessary to include electricity meters, gas meters, flow meters, press gas mixtures, air compressors and other equipment in the monitoring scope, and supervise all kinds of energy consumption. Consumption situation, improve energy awareness.
4 system architecture
Acrylic's Acrel-5000 building energy analysis management system uses the workstation host, communication equipment and measurement and control unit as the basic tools, providing a basic platform for real-time data acquisition, switch status monitoring and remote management and control of large public buildings. The detection and control equipment constitutes an arbitrarily complex monitoring system. The system mainly adopts a layered distributed computer network structure, as shown in the system structure diagram: Sevis Glass Co., Ltd. project energy management system station management layer and network communication layer. The field equipment is distributed in the first to third floor buildings. There are 24 electric meters, 4 gas meters, 4 air flow meters, 1 press gas mixture and so on.
System structure diagram
6 system software module
â—†Comprehensive energy consumption main interface
Reflecting the comprehensive energy consumption of the energy consumption of the buildings and the conversion to standard coal in the current year, and calculating the energy consumption per unit area;
Although there are many energy consumption classifications in buildings, the main energy, water, gas and renewable energy sources that can be measured by the meter are the time-of-day energy consumption curves of the four types of energy consumption at the bottom of the interface; click each The upper area of ​​the classified energy consumption can be jumped to the energy analysis main interface of the energy consumption of the classification;
The building can be switched through the drop-down box, and the building picture can be replaced according to the project requirements;
â—†Classified energy consumption main interface
Reflecting the energy consumption and comparison, growth percentage and added value of the energy consumption (eg electricity) of a certain classification on the same day and the same period of the previous year, the current month and the same period of the previous month, the current year and the same period of the previous year;
Reflecting the energy consumption trends of the past 48 hours, the past 31 days, the past 12 months, and the past 3 years of a classified energy consumption;
The energy consumption pie chart for the month reflecting the energy consumption of a sub-item;
Reflecting the energy consumption of a certain classification in each month of the year;
â—†Classification energy consumption branch energy consumption report
The branch road can be flexibly selected, and the daily, monthly, weekly, seasonal and annual energy of the branch road energy can be counted in a certain period of time;
Through the powerful pivot table, users can perform a variety of data statistics and combine and sort the data;
Statistics can be displayed in a variety of charts, such as histograms, dotted lines, stacked charts, and pie charts;
Statistics can be exported to Excel;
â—†Classified energy consumption branch non-working day energy
Statistics on the working days of each branch and non-working days, non-working days can be flexibly set through the system
Statistics can be exported to Excel;
â—†Analysis of the classification of energy consumption branches
Count the monthly energy use of each branch in the same year and use energy in the same period last year;
â—†Classified energy consumption branch
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Query the meter readings of any two branches of each branch and calculate the difference;
Time accuracy to minutes;
â—†Classification energy consumption branch time-use energy trend analysis
It can query the energy parameters (such as voltage, current, power, power factor, harmonics, etc.) of any branch for a certain period of time. The specific queryable parameters are related to the installed instrument and system configuration.
The data is displayed in the form of a chart or a table. The chart can be enlarged, reduced, and moved by mouse operation; the data can be sorted (maximum, minimum);
Data can be exported to Excel;
â—†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.
7 Outlook
According to the analysis of the energy consumption operation effect of Sevis Glass Co., Ltd., a typical energy consumption analysis model was established and unified analysis was carried out.
a. Establish a building energy consumption measurement system, reduce the energy consumption of the building, find the black screen of energy consumption, and make the energy-saving transformation more targeted. At the same time, consolidate the results of energy-saving transformation through management measures such as metering and charging and performance appraisal.
b. Select energy-saving equipment (inverter, heat recovery device).
c. Even the best energy-saving equipment can not afford to save energy. By increasing the automation energy-saving equipment, formulate equipment operation strategies, reduce human intervention, and centralized control, so that energy-saving equipment is achieving energy conservation.
d. Quantify the results of energy-saving renovation through the same-loop analysis data provided by the energy consumption monitoring system to maximize the energy-saving effect.
8 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 to energy-saving and energy-saving. It is of great significance to promote the energy-saving work of Shanghai Seves Glass Co., Ltd. to achieve 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"
About the author: Yang Junjun, female, undergraduate. Position: Now working for Ankerui Electric Co., Ltd., contact number, mobile phone, QQ
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