Ankerui Cui Tingyu
Jiangsu Ankerui Electric Manufacturing Co., Ltd.
Abstract: The increase of users' awareness of their own energy management has promoted the popularization of user-side power distribution systems in commercial, industrial and civil areas. The system designs and installs smart meters for the main energy-consuming nodes on the user side, and then uses the background system to monitor the working status of each energy-using loop, power consumption and other data collection in real time. Through real-time monitoring of energy consumption and related power parameters, the safety, reliability and maintenance efficiency of energy use are improved, and the labor cost of maintenance is reduced, and intelligent management of power distribution system monitoring is realized. At the same time, through real-time monitoring of energy use, data collection and storage, the operating status of the power supply and distribution system is clarified, and data is provided for users to save power and maintenance costs. Now take the ACREL-5000 energy consumption management system used in the project of China's commercial aircraft assembly base project as an example. A brief introduction to the intelligentization of energy use on the user side.
Keywords: China's commercial aircraft assembly base project energy consumption management unattended intelligent power distribution system distribution automation
0 Preface
In large-scale office building projects, the original manual meter reading and data collection in the power distribution system can no longer meet the current office management system. The intelligence and digitization of the power supply and distribution system have become the basic requirements for intelligence and digitization in large-scale office building projects. Real-time monitoring of user-side energy consumption through intelligent systems, data accumulation and analysis, provide managers with accurate building office energy consumption data.
ACREL-5000 energy consumption management system is a user-side energy consumption management system developed in response to the above trends. This system uses real-time measurement, storage, and analysis of the energy consumption of the incoming and outgoing circuits of the substation of the China Commercial Aircraft General Assembly Base Project, and displays the energy consumption and operation status of the entire power distribution system in the form of tables or graphs, and quantifies the operation status of the system. Provide data basis for managers' daily management and maintenance.
This article takes China's commercial aircraft assembly base project as an example, and briefly introduces the application of ACREL-5000 energy management system in the power distribution system of China's commercial aircraft assembly base project.
1 project introduction
Pudong Base, General Assembly Manufacturing Center of Commercial Aircraft Corporation of China. The Pudong Base is located in Zhuqiao Town, Pudong New District, Shanghai, on the south side of Pudong International Airport. It covers an area of ​​approximately 2.67 million square meters (approximately 4000 acres) and has a total construction area of ​​approximately 1.15 million square meters, including scientific research office areas, production preparation areas, Parts manufacturing area, component assembly and final assembly area, complete machine painting area, aircraft test flight area, auxiliary supporting area and park roads, central green space, supporting green space, parking lot and other areas.
This project undertakes the energy management system of its commercial aircraft assembly base in China, monitors the power distribution system, and monitors the low-voltage outgoing circuits of various high and low voltage power distribution rooms and substations as well as floors.
ACREL-5000 energy consumption management system collects, stores, and processes data from smart metering instruments, and exports them in the form of graphics and reports to provide managers with specific power consumption details.
2 user needs
After on-site investigation and communication with the owner in the early stage, the basic requirements are sorted and analyzed and divided into the following aspects:
1) Remote meter reading of important power distribution circuits in various substations and floors;
2) Data collection and electric energy measurement of electric energy and electric parameters of incoming and outgoing circuits within the monitoring range of the system;
3) Energy consumption analysis of each loop within the system monitoring range, sub-item statistics, and energy consumption trend analysis;
4) Real-time data display of important loops, custom loop names;
5) According to the actual power distribution structure, draw power distribution diagrams for each substation;
6) Curve display of important power parameters, current and voltage of important circuits;
7) User authority level management, different levels of authority realize different levels of management operations;
3 design plan
3.1 Reference standards
The design of the system meets the manufacturing and test standards listed below:
JGJ/T 16-92 "Code for Electrical Design of Civil Buildings"
GB/J63-90 "Code for Design of Electrical Measuring Instruments for Power Installations"
GB/T13730 "General Technical Requirements for Data Acquisition and Monitoring System of Regional Power Grid"
GB2887 "Technical Requirements for Computing Station Sites"
GB/50198-94 "Technical Specification for Monitoring System Engineering"
DL/T 698.31-2010 "Part 3.1: Technical Specifications for Electric Energy Information Collection Terminals-General Requirements"
DL/T 698.35-2010 "Part 3-5: Technical Specifications for Electric Energy Information Collection Terminals-Special Requirements for Low-Voltage Centralized Meter Reading Terminals"
DL/T 698.41-2010 "Part 4-1: Communication Protocol-Communication between the Master Station and the Electric Energy Information Collection Terminal"
DL/T 698.42-2010 "Part 4-2: Communication Protocol-Concentrator Downlink Communication Protocol"
DL/T/814-2013 "Function Specification for Distribution Automation System"
"National Office Buildings and Large Public Buildings Energy Consumption Monitoring System-Technical Guidelines for Sub-item Energy Consumption Data Collection"
"National Office Buildings and Large Public Buildings Energy Consumption Monitoring System-Technical Guidelines for Sub-item Energy Consumption Data Transmission"
"National Office Buildings and Large-scale Public Buildings Energy Consumption Monitoring System-Building Sub-item Measurement Design and Installation Technical Guidelines"
"National Office Buildings and Large Public Buildings Energy Consumption Monitoring System-Technical Guidelines for the Construction and Maintenance of Data Centers"
"National Office Buildings and Large Public Buildings Energy Consumption Monitoring System-Construction, Acceptance and Operation Management Specifications"
"National Office Buildings and Large Public Buildings Energy Consumption Monitoring System-Software Development Guidance Manual"
3.2 System architecture design
In view of the scale and nature of China’s commercial aircraft assembly base, as well as the nature of subsequent projects that can be developed jointly, the system department of Ankerui Electric Co., Ltd., based on the user’s needs and experience in projects of the same nature, has The construction of the intelligent power distribution system is designed as follows: All the substation monitoring points of the China commercial aircraft assembly base have been installed with intelligent power meters, and all adopt the standard Modbus-RTU protocol. The smart meters installed on site are connected hand in hand through shielded twisted-pair cables, where the data bus of the substation is directly laid to the data acquisition box; the data bus of the floor distribution box is laid to the data acquisition box, and then the data bus is connected to the data acquisition box through optical fiber communication. The /IP protocol transmits the energy consumption data in the data collection boxes of the two areas to the system host. The system diagram is as follows:
4 System function
The host computer software adopts the ACREL-5000 energy consumption management system and is embedded in the primary power distribution monitoring screen of the substation. Through the software, the equipment configuration, database variable configuration, interface design, etc. are completed, and the functions of the host computer software monitoring and energy management are completed.
4.1 Features
ACREL-5000 energy consumption management system adopts all Chinese interface, simple and convenient operation; stable and reliable operation. Click the corresponding shortcut button to enter the corresponding system function module; the system has a system diagram display, a simulation diagram display and a network structure diagram display; the system has a friendly man-machine interface, and the displayed data is intuitive, which is convenient for users to refer to. The building energy consumption analysis management system uses remote transmission and other means to collect energy consumption data in time, and mainly realizes the functions of online monitoring and dynamic analysis of energy consumption.
4.2 Software function:
4.2.1 Monitoring details
The detailed monitoring diagram reflects the name of the power distribution circuit of the entire system, the corresponding power distribution system and the main electrical parameters of the circuit. Through the display of real-time data, it can directly reflect the operating data of each monitoring loop of this project, so that managers can understand the operating status of the system in real time. The interface is shown in Figure 2.
4.2.2 Detailed electrical parameter diagram
The detailed electrical parameter diagram reflects the operating data of the monitoring loop of this project at a certain point in time in the past, and reflects the state of the loop through the real-time parameter data at a certain point in time at present or in the past. The main data includes: three-phase voltage, three-phase current, electric energy, active power, reactive power and other parameters.
4.2.3 User Management
The system software is equipped with hundreds of password partitions and password settings, provides hierarchical passwords for system administrators, logistics managers, equipment maintenance personnel, etc., and automatically records all operations with time stamps, which can establish a good anti-accident Measures. In order to enable the real-time system to operate safely and stably, the entire system provides reliable security protection measures. All system operators can assign certain characteristics according to the authority. These characteristics stipulate the scope of application of each operator to the system and various activities, such as users Features such as name, password, operating authority and operating range. The interface is shown in Figure 4.
4.2.1 Energy consumption trend analysis of branch roads
Acrel-5000 energy consumption management system can count the energy consumption of each power distribution circuit within a certain period of time, day by day, week by week, month by month, season by season, and year by year. Select the branch that needs to be queried, click "load data" to view the energy consumption trend of each branch, and query according to the existing date or custom time, and the total energy consumption of the branch can be displayed in the form of a chart. The interface is shown in Figure 5.
4.2.1 Sub-item use of energy
Acrel-5000 energy consumption management system can count the energy consumption of each sub-item within a certain period of time, day by day, week by week, month by month, season by season, and year by year. Select the branch that needs to be queried, "load data" to view the energy consumption trend of each branch, and query according to the existing date or custom time. The branches here come from the configuration of the classification and sub-items in the basic data. The energy consumption of the current month is queried by default. The interface is shown in Figure 6.
5 concluding remarks
The requirements of intelligent, transparent, and high-efficiency power distribution systems in large office buildings have prompted the market to provide them with corresponding solutions. At present, it is mainly through the installation of smart meters in the power supply and distribution system of large office buildings, that is, the entry and exit nodes of the substation, and the use of computer network integration technology to provide customers with services such as remote meter reading, data storage, and data processing to help customers understand in real time The energy use status of the building realizes the intelligent management of the energy use of the building.
The total area of ​​large public buildings is less than 4% of the total urban building area, but the total energy consumption accounts for 22% of the country’s total electricity consumption in cities and towns. The annual power consumption per unit area of ​​large public buildings reaches 70 to 300 KWh, which is 10% of that of ordinary residential buildings. ~20 times. Public buildings are major energy-saving consumers and the focus of energy-saving. Doing a good job in the energy-saving work of China's commercial aircraft assembly base project is of great significance for promoting and driving energy-saving work and achieving energy-saving and emission-reduction goals.
references
[1]. Technical requirements of the Ministry of Housing and Urban-Rural Development
[2]. National Office Buildings and Large Public Buildings Energy Consumption Monitoring System-Technical Guidelines for Sub-item Energy Consumption Data Collection
About the author: Cui Tingyu, male, undergraduate, Jiangsu Ankerui Electric Manufacturing Co., Ltd., whose main research direction is intelligent building power supply and distribution monitoring system. Email: el.cn QQ: 2881068608 Mobile: 18860995251 Tel: 0510-86179851 Fax: 0510-86179975 Website: http://
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