Application of Acrel-2000 Power Monitoring System in Dongyuan Community, Chengdu Renju Real Estate Co., Ltd.
Xu Shuang Ankerui Electric Co., Ltd., Shanghai Jiading Abstract: With the development of modern technology, the user-side intelligent power supply and distribution system has become an inevitable trend in today's social development. The corresponding smart meters and systems are installed in the substation to monitor the power status in real time and improve the power supply and distribution system. Safety, reliability, and maintenance efficiency, reduced labor costs for maintenance, and unattended automation of part of the power supply in substations save users power maintenance costs. The Acrel-2000 power monitoring system used in Chengdu Yuanju Property Co., Ltd. Dongyuan Community Project will now provide a brief introduction to the automation and intelligence of power supply and distribution. Keywords: human settlements community distribution unattended power monitoring smart distribution system distribution automation 0 Preface The development of modern industrial technology puts forward higher requirements on the reliability and intelligent management of distribution system operation, and the extensive application of microprocessor technology and the substantial increase in the reliability of computer systems have enabled intelligent electrical components to obtain rapid Development, intelligent electrical management system came into being. Acrel's Acrel-2000 power monitoring system software utilizes computers, communication equipment, and metering protection devices to provide a basic platform for real-time data acquisition, switch status detection, and remote control of the system. The power monitoring system can provide a "monitoring integration" of the overall solution, including real-time historical database AcrSpace, industrial automation configuration software AcrControl, power automation software AcrNetPower and so on. This article takes Dongyuan Residential Community Co., Ltd. as an example to briefly introduce the Acrel-2000 power monitoring system to realize the automation and intelligence of the power supply and distribution system in the residential community project, and at the same time improve the safety and reliability of the power supply and distribution system. Historical data can be Traceability and other functions. 1 Project introduction Chengdu Renju Real Estate Co., Ltd. is a state-owned wholly-owned subsidiary of Chengdu Xingcheng Investment Group Co., Ltd. The company was established on August 31, 2004, with a registered capital of RMB 600 million. Its main business activities include real estate development and sales, and property management. Chengdu Yuanju Property Co., Ltd. Dongyuan Community is composed of 33 high-rise elevators with 26, 28, and 32 floors respectively, with a total of more than 6,000 households (including 1,282 first-phase projects (A-zone) construction), and 1-2 underground buildings. Separate garage on the floor. The supporting facilities such as transportation, commerce, banking, primary school, kindergarten, leisure and entertainment, medical care, and farmer's markets in the district will be fully completed when the community is completed. Considering the cost and practicality of the construction party, the monitoring scope of this intelligent power monitoring system is three high-rise apartments in the Dongyuan Community. Do the trial first and use the effect to do promotion. Each of the three apartments is equipped with a substation in each building to facilitate the allocation and management of electricity and power distribution within the building. In order to realize the automation of distribution within high-rise apartments and improve the safety, reliability and rationality of residential electricity use, the construction company entrusted Ankerui Electric Co., Ltd. to undertake the construction of this project's intelligent distribution monitoring system. The power monitoring system project includes four parts: 1# power distribution room, 2# power distribution room, 3# power distribution room and generator room. There are 75 monitoring points in 1# power distribution room, 94 monitoring points in 2# power distribution room, 14 monitoring points in 3# power distribution room, and 9 monitoring sites in generator room. The monitoring background is placed in the central control room. The project site plan is as follows: 2 user needs The monitoring information such as voltage, current, power, power factor and frequency is refreshed in real time and visually and dynamically displayed in a single graph. Each circuit sub-screen displays information on the circuit's electrical parameters, circuit name, CT ratio, current limit value, and switch status. Draw a current trend curve for its load to facilitate analysis of the circuit distribution operating conditions Over limit alarm, set limit alarm for customer's specific loop The function of copying the electric energy of each circuit and automatically generating the electricity report meeting the management requirements of the customer Alarm event records allow maintenance personnel to maintain the circuit based on the nature of the event. 3 design plan 3.1 Reference Standard The design of the system meets the following manufacturing and test standards: JGJ/T 16-92 Civil Building Electrical Design Code GB/J63-90 "Design Specification for Electrical Measuring Instruments for Electrical Installations" GB/T13730 General Technical Conditions for Data Acquisition and Monitoring System of Regional Power Grid GB2887 "Technical Requirements for Computing Station Sites" GB/50198-94 "Technical Specifications for Monitoring System Engineering" 3.2 Requirements Analysis, System Structure Design In view of the construction scale of the Dongyuan Community and the joint development nature of the follow-up projects, the system department of Ankerui Electric Co., Ltd. made a detailed analysis of the three apartments under the pilot according to the needs of the users, and made a detailed analysis of the three buildings. The construction of the smart distribution system of the apartment is designed as follows: All monitoring points in the Dongyuan Community of Chengdu Renju Property Co., Ltd. are now installed with smart power meters, and all adopt the standard Modbus-RTU protocol. The on-site installation of smart meters is hand-in-hand connected through shielded twisted-pair cables. The communication collection box is placed in each power distribution room by means of local installation to ensure real-time and high-resolution signal acquisition. The 2# and 3# power distribution room and generator room are close to the central control room, and the distances are all within 40 meters. After the data is collected by the communication collection box, it is uploaded to the central control room monitoring background through the Super Category V line. The 1# power distribution room is about 300 meters away from the central control room. In order to improve the anti-jamming ability during data transmission, ensure the long-term stable and normal operation of the communication equipment. After the data collection in the communication collection box is completed on site, the data is uploaded via the optical fiber. To the control room in the control room. The system network topology is as follows: System topology diagram 4 system function The upper computer software uses Acrel-2000 power monitoring software to perform software configuration such as device configuration, database variable configuration, interface design, etc., to complete software monitoring and power monitoring functions in the upper computer. 4.1 User Rights Management For different levels of users, different permission groups are set to prevent the losses caused by human misoperation to production and life, and to realize the safe and reliable operation of the distribution system. You can use user management to perform user login, user logout, password change, and add/delete operations to facilitate the user's modification of accounts and permissions. The software login needs to enter the correct user name and password to enter the software function window. The login interface is shown in Figure 1: figure 1 4.2 Distribution Room Monitoring Screen The power monitoring system mainly monitors the running status of the monitoring circuit in the power distribution room in real time. The red represents the closing and the green represents the opening. In the monitoring picture, you can intuitively see the operating parameters and status of the incoming and outgoing lines of each circuit. You can see all the conventional power parameters of the outgoing line, such as: three-phase voltage, current, active power, reactive power, power factor , frequency, active power, etc. The substation software interface is shown in Figure 2: figure 2 4.3 System Network Topology The schematic diagram of the system communication structure mainly shows the networking structure of the system. The system adopts a hierarchical distributed structure and simultaneously monitors the communication status of the equipment at the bay level. Red indicates normal communication and green indicates communication failure. As shown in Figure 3: image 3 4.4 Current Curve The load trend curve interface allows you to visually check the load operation of the loop. View real-time and historical trend curves, click the corresponding button or menu item to complete the switching of corresponding functions; help the user to enter the trend analysis and fault recall, with curve printing function. Provides intuitive and convenient software support for analyzing the health of the entire system. As shown in Figure 4: Figure 4 4.5 Alarm Lines The remote signaling and telemetry alarm functions mainly complete the monitoring of the switching operation status and load incoming line of the low-voltage outlet loops, and indicate the specific alarm position and audible alarm to the switch displacement and load over-limit pop-up alarm interfaces, prompting the on-duty personnel to deal with them in time. The load limit can be set freely under the corresponding authority. With history query function. As shown in Figure 5: Figure 5 4.6 Energy Report The electricity consumption report function can select the time period to inquire, supports the accumulated electricity inquiry at any time, and has the functions of data export and report printing. Provide accurate and reliable power report for duty personnel. The names of the loops in this report are associated with the database to facilitate the user to modify the loop name. As shown in the following figure, the precise power consumption of each distribution circuit during a certain period of time on the site is displayed. The user can directly print the report and can save it in EXCEL format to another location. As shown in Figure 5: Figure 6 4.7 Alarm Event Record The remote signaling and telemetry alarm functions mainly complete the monitoring of the switching operation status and load incoming line of the low-voltage outlet loops, and indicate the specific alarm position and audible alarm to the switch displacement and load over-limit pop-up alarm interfaces, prompting the on-duty personnel to deal with them in time. The load limit can be set freely under the corresponding authority. With history query function. As shown in Figure 7: Figure 7 5 implementation of the effect of comparison project Artificial Intelligent distribution system Manual patrols, once every hour, 2 times a day for meter reading, time for each loop is not uniform, data traceability is poor, and personnel response time is slow when equipment fails Real-time computer acquisition, once 50mS, strong data traceability, fault alarm timely, quick response time 2, data management Paper records, rummaging during inquiries, longevity, complicated data date management, decentralized management, manual scheduled backup, inaccurate backup of continuous data, Computer storage, data can be stored for more than 10 years, query speed, just a mouse, quickly and accurately. 6 Conclusion With the development of society and the wide application of electricity, the power monitoring system has become an inevitable choice for key projects, landmark buildings, large-scale public facilities, and large-area multi-substation users across the country. This article describes the Acrel-2000 power monitoring. The application of the system in Chengdu Dongju Residential Area Estates Real Estate can realize the real-time monitoring and power management of substation low-voltage power distribution circuits. It can not only show the power status of the circuit, but also has network communication functions, and can be used with a serial server. , Computers and other power monitoring systems. The system analyzes and processes the collected data, displays the running status of each distribution circuit in the substation in real time, has a pop-up alarm dialog box and alarm sound prompts for analog sub-switching, load over-limit, and generates various electric energy reports and analyses. Curves, graphics, etc. facilitate remote meter reading and analysis and research of electric energy. The system is safe, reliable, and stable. It provides real and reliable basis for substation users to solve power problems, and has achieved good social benefits. references [1] "Principles and Application Guide for Power Electronic Measurement Digital Meters", Ren Chengcheng, Zhou Zhong, China Electric Power Press [2] "Design and Implementation Technology of Intelligent Building Control System", Li Lianye, Zhu Weidong, Li Yu, Tsinghua University Press [2]. "Smart Grid user-side power monitoring and power management system product selection and solution [," Zhou Zhong, Beijing. Mechanical Industry Press. About the Author: Xu Shuang, female, undergraduate, Ankerui Electric Co., Ltd., the main research direction for the smart grid power distribution, Email: Mobile QQ Screw Barrel For Pet,Pet Screw Barrel,Extruder Screw And Barrels,Barrel Screw For Pet Extruder ZHEJIANG HUAYE PLASTICS MACHINERY CO.,LTD , https://www.huaye-group.com
Schematic plan view 
