This paper introduces the power distribution system of Jinling Jinqiao Industrial Park, using intelligent meters to collect electrical parameters and switching signals at the power distribution site. The system adopts the local networking mode. After networking, it communicates through the fieldbus and travels to the background. Through the Acrel-5000 building energy management system, real-time power collection of all tenants in the park is realized, and electricity charges are collected to reduce energy consumption. General wearing parts for Denso including filter, orifice plate. Besides, there is also injector and pump assembly, nozzle, valve, shim, spacer, washer repair kit etc. Denso Parts,Denso Fuel Injectors,Denso Spare Parts,Denso Injector Plug CHENGDU UNICO MACHINERY CO., LTD , https://www.injectortestbench.com
Yang Junjun
Ankerui Electric Co., Ltd., Shanghai Jiading
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 management system should be included as part of the new construction equipment facility system and included in the construction plan; the third phase of the nuclear engineering institute belongs to the large public building office building. The design basis of Shanghai energy consumption monitoring is mainly “DGJ68- 2068-2012" Technical Specifications for Energy Monitoring in Public Buildings.
2 Design basis
The building energy management system is designed and developed in accordance with the “Energy Management System for State Offices and Large Public Buildings†formulated by the Ministry of Housing and Urban-Rural Development. The design basis is sufficient and the standards are perfect.
a. Technical requirements of the Ministry of Housing and Urban-Rural Development
"Technical Guidelines for Sub-item Energy Consumption Data Collection of State Organs Office Buildings and Large Public Buildings Energy Management System"
"Technical Guidelines for Sub-item Energy Consumption Data Transmission of State Organs Office Buildings and Large Public Buildings Energy Management System"
"Technical Guidelines for Building Sub-metering Design and Installation of Energy Consumption Management System for Office Buildings and Large Public Buildings"
Technical Guidelines for Construction and Maintenance of Data Centers for Office Buildings and Large Public Building Energy Management Systems
"Regulations on the Construction, Acceptance and Operation Management of Energy Management System for Office Buildings and Large Public Buildings of State Organs"
"Guidelines for Software Development Guidelines for Office Buildings and Large Public Building Energy Management Systems"
b. Technical plans for building energy monitoring in various provinces and cities
DGJ08-2068-2012 "Shanghai Municipal Public Building Energy Monitoring System Engineering Technical Specification"
DBJ/T13-158-2012 "Technical Specifications for Energy Management System of Public Buildings in Fujian Province"
c. 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
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
The project is located at No. 1000 Jinhai Road. The project is mainly for the monitoring of new buildings. The scope of this monitoring is mainly for the four substations and the new canteen.
7# substation: 68 multi-function network instruments (1 ACR330EFLH and 67 ACR220EFL)
8# substation: 69 multi-function network instruments (1 ACR330EFLH and 68 ACR220EFL)
9# substation: 58 multi-function network instruments (1 ACR330EFLH and 57 ACR220EFL)
10# substation: 30 multi-function network instruments (1 ACR330EFLH and 29 ACR220EFL)
New canteen: 19 multi-function network instruments (19 ACR220EFL)
4 Project requirements
The project has a power management system of our company. In addition to adding existing instruments, the system software needs to incorporate the original power management data (about 500 devices) into the new system.
This time, the main functions of the original system software and hardware are upgraded and maintained to ensure the original operating style.
1). Network structure diagram display; system one-time diagram display; network structure diagram display;
2). Remote real-time dynamic acquisition of electrical parameters;
3). System operation load curve;
4). Main line harmonic analysis bar graph display
5). Remote meter reading; power management;
6). Run event logging and query functions;
7). Device communication abnormality real-time acquisition display;
8). Comprehensive energy consumption analysis;
9). Classification energy analysis;
10). Year-on-year energy consumption analysis;
11). Workday/non-working day energy consumption analysis;
12). Sub-regional energy statistics function;
5 Equipment selection
a. Multi-function network instrument
Function: active energy, current, voltage, active power, power factor
Accuracy level: the feeder of the substation is not lower than 0.5, and the outlet circuit of the floor power cabinet is not lower than 1.0.
Transformer accuracy: no less than 0.5
Electrical interface: RS-485
Communication protocol: MODBUS, DL/T645
Installation location: all circuits in the substation, floor lighting and socket power, power, air conditioning and special power.
Installation method: embedded
b. Data collection function
1) Providing the static information of the metering device The manual input function can be set according to the relationship between each metering device, each category, and the energy consumption of each item; 
2) The basic properties such as communication protocol, communication channel, metering device name and configuration position of each metering device can be flexibly set;
3) It can monitor the communication status of each metering device and transmission device in the system online, with fault alarm prompt function;
4) It can flexibly set the data data collection period of each collection device in the system. Not more than 15min.
6 system architecture .jpg)
General system diagram 
7#, 8# substation 
9#, 10# substation and new canteen
Construction wiring plan:
1), 10# substation is pulled to the 9# substation communication collection box by a shielded twisted pair cable, and the cable laying distance is about 100 meters, and the base bridge frame (3-4 meters height) is taken.
2), 9# substation is pulled through a single-mode 4-core fiber to the 31# floor 1st floor machine room, through the upper bridge of the garage and the underground electric well of the pavement, about 500-600 meters of cable laying distance; at 9 #å˜ç”µæ‰€Installed an 8-port communication collection box.
3), 7# Substation pulls 3 shielded twisted pairs to the 8# substation communication collection box, about 100 meters of cable laying distance, and walks the base bridge.
4), 8# substation installed an 8-port communication collection box, through a single-mode 4-core fiber to the original collection box of the basement substation of 9# building (alternative replacement of the photoelectric conversion of the collection box) The device is replaced by MIE-1205S), and the fiber is laid at a distance of about 400 meters through the upper bridge of the garage and the underground electric well of the road.
5), 19 new multi-purpose network instruments in the new canteen are pulled to the basement substation of 9# building through a shielded twisted pair cable. The cable laying distance is about 300-400 meters. The cable has a distance of 100 meters. Green lawns (along the lawns and roadsides) are laid through the pipes.
6), 31# Building original B1 floor machine room pulls a single-mode 4-core fiber to the first-floor computer room, walks the original bridge of the basement, and lays the cable distance of about 100 meters.
Duty room layout plan: 
7 system software module
a. Network structure display 
The three current values ​​of the incoming loop and each feeder loop are displayed in real time.
b. Remote real-time dynamic acquisition of electrical parameters 
You can query the current, power and energy parameters of the corresponding meters in each power distribution room and building at any time, and click the report print button to print out. You can also export the queried data to an Excel spreadsheet.
c. System operation load curve 
By selecting the transformer circuit, setting the starting time and interval time, and clicking the search curve on the interface, you can view the current load trend curve of the corresponding incoming loop in this period.
d. Main line harmonic analysis bar graph display 
View the percentage of current and voltage 2-31 harmonics of the main incoming loop.
e. Remote meter reading; power management 
f. Run event record and query function 
g. Device communication abnormal real-time acquisition display 
h. Integrated energy 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;
a. Classification energy 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;
b. 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;
c. Classification energy consumption branch time-use energy statistics 
It can be used to count the time of each branch (point, peak, flat, valley);
By setting the energy price per unit time (point, peak, level, valley) in the basic data, the amount of energy used in the time period can be counted;
This function is required to use a power meter with a multi-rate function;
Statistics can be exported to Excel;
d. Classification 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;
e. Year-on-year analysis of classified energy consumption branches 
Count the monthly energy use of each branch in the same year and use energy in the same period last year;
a. Classification energy consumption branch 
Query the meter readings of any two branches of each branch and calculate the difference;
Time accuracy to minutes;
b. Analysis of energy consumption trends of classified energy consumption branches 
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;
c. Classification energy consumption branch 
Comparing the energy value of the current branch with its lower branch, and calculating the difference and the percentage difference;
When the percentage difference between the two exceeds a certain value, the color is prompted with a bold color;
This function is mainly to ensure the integrity of the energy measurement system and the verification of the data;
d. Departmental energy performance appraisal 
Set the energy consumption plan value of each department in the system and compare it with the actual value.
e. Sub-item, regional, departmental energy interface 
f. 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.
8 Outlook
According to the analysis of the energy consumption operation effect of Jinling Jinqiao Industrial Park, a typical energy consumption analysis model is established to analyze the energy consumption of the park.
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. 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 management system is used to quantify the results of energy-saving retrofits to maximize the energy-saving effect.
9 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 do a good job in the energy-saving work of the third-phase public building office building of the Nuclear Engineering Institute. It is of great significance to promote and promote energy-saving work and 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, undergraduate, unit: Ankerui Electric Co., Ltd. Contact phone, mobile phone, QQ
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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