Application of Acrel-3000 Power Management System in Hyatt Regency Suzhou
Ankerui Qingqing Jiangsu Ankerui Electric Appliance Manufacturing Co., Ltd. Jiangyin , Jiangsu 214405 Abstract: Introducing the Suzhou Hyatt Hotel , using smart power meters to collect various electrical parameters and switching signals at the distribution site. The system uses on-site network in place way back through the field bus communication network and remote to the background, real-time monitoring and management of electricity substation power distribution circuit by Acrel- 3 000 type power management systems. Keywords: Hyatt Hotel; Substation; Intelligent Power Meter; Acrel-3000; Power Management System; 0 Overview  Suzhou Jinhe Plaza is the first landmark-level commercial complex developed by Singapore Jinhe in Suzhou. The project has a total construction area of ​​203,535 square meters. The project covers a five-star (Kai Yue) hotel, two 5A-class office buildings and high-end businesses. Sub-leased and sold office buildings: The sales section is the high-rise office building (6-16 floors) on the west side and the high-rise office building (3-15 floors) on the east side; the lease part is the high-rise office building on the east side. High area (17-28 floors). The commercial area is about 18,400 square meters. The floors are distributed from the first underground floor to the upper four floors, and the underground floor is connected with the Subway Line 1 (Times Square Station). The project mainly involved the low-voltage power distribution section of the Hyatt Hotel. 1 Demand analysis To ensure the statistics and analysis of the electricity load for production management and real-time monitoring of hazards. It is necessary to carry out real-time on-line monitoring of voltage, current, and power parameters of low-voltage distribution cabinets, power transformers and other electrical equipment at the production site. Once the monitoring point is monitored for abnormal parameters, the alarm can be detected in time, and the relevant personnel take necessary measures to avoid safety accidents. The automatic meter reading function saves manpower and material resources, and the power trend curve function can intuitively display the working status and time of each loop, so that the user can find the abnormal power circuit and perform correction in time. This technical condition applies to the low-voltage cabinets of the power distribution room of the Hyatt Hotel. The supplier's products should have high security and reliability, be easy to expand, and be easy to maintain and maintain. The product provided by the supplier shall meet at least the technical conditions, but it is not limited to this. The technical performance of the supplier shall meet the requirements for data monitoring of the power distribution room. data collection It automatically collects the analog data of all the electricity meters at the site, and automatically collects the switch data such as on-site switch status and fault status. Supports real-time acquisition, automatic cycle acquisition (timing acquisition), configurable period (1 minute to 24 hours). Support data transmission correctness test, abnormal data processing automatically. Support multi-thread processing mechanism, improve data collection efficiency, and data collection for multiple devices at the same time. The real-time display of data adopts the visual display mode of the main wiring diagram of the power distribution room, and the disconnection and fault status of each loop can be seen directly. Data analysis and processing Comprehensive statistics and analysis of data need to achieve the following functions: The statistics and calculations for hours, days, months, and years of electricity data for each device. The maximum, minimum, and average values ​​of the electrical loads (active and reactive) for each device are calculated. Statistics on the power usage (active and reactive) of each substation and the whole. Data query and display Requirements can facilitate the implementation of client inquiries and inquiries at all levels of management personnel, query interface can adapt to the requirements of all levels of management personnel can support flexible conditional combination of query and comparative analysis, various types of statistical analysis of data can be flexible to use reports and other charts Intuitive display function. The data display function is divided into three layers for operation level, management level, and decision level according to the different permissions of different users. The operation layer has functions such as energy consumption analysis, cumulative usage, real-time monitoring, operation record and ratio, comparison, and benchmarking. Management has functions such as energy statistics and analysis, comparison of classification items, and benchmarking. The decision-making level has functions such as energy consumption data analysis, data deletion, and database import/export. authority management Requirements for different users to give different roles, can be authorized to function submenu, specific file records, data records. The system requires a reasonably complete user security control mechanism, which can effectively protect the information resources in the application environment and prevent the loss, theft and destruction of information. Energy Saving Improvement and Effect Evaluation It is required to provide data support for the production of energy-saving retrofits and to provide an assessment of the effects before and after the energy-saving renovation. parameter settings Through the collection cabinet can set the loop transformer ratio, a variety of current and voltage protection settings. Fault judgment and alarm have automatic fault judgment and use sound and light alarm function. The types of alarms include switch failures, voltage and current overruns, on-site acquisition module communication failures, and monitoring system communication failures. The alarm time is automatically recorded in the system database to facilitate user inquiries. The staff can always grasp the real-time operation status of the substations, find faults in the substations and make corresponding treatment, improve the management efficiency of the substations and improve the safety of the electric power system. reliability. 2 system solutions Acrel-3000 system Acrel-According to the actual situation of the Hyatt Regency Suzhou hotel, the overall network structure is directly connected to the data collector using a shielded twisted pair cable and then directly connected to the monitoring host, to ensure the stability of the power substation monitoring system transmission and real-time. As shown in the following figure: Station management layer, network communication layer and field device layer. A total of 145 PZ72L-E4/C sites are divided into 7 RS485 buses connected to the serial port server. Finally, they are connected to the monitoring host through the network cable and connected to the monitoring host to achieve data connectivity between the meter and the monitoring host on the bus. 1) Station control management Station management The management personnel of the power monitoring system are the direct windows of human-computer interaction. In the Hyatt hotel engineering, it mainly refers to the monitoring host placed in the power distribution center. 2) Network communication layer The communication layer is mainly composed of Nport5630-8 serial port server, Ethernet equipment and bus network. The main function of the serial port server of the Nport5630-8 is to monitor the field smart meters; the main function of the Ethernet device and the bus network is to realize the data exchange between the substation and the master station, so that the distribution system management is centralized, informatized, and intelligent. Greatly improved the security, reliability and stability of the distribution system and truly achieved unattended purposes. 3) Field device layer The field device layer is a data collection terminal, which is mainly composed of smart meters. The smart meters are connected to the communication server through a shielded twisted pair RS485 interface using a MODBUS communication protocol bus type connection, and the communication server reaches the power distribution monitoring host for networking. Realize remote control. Smart meter on-site connection The field instrument communicates with each other through a shielded twisted pair (RVSP2*1.0) in a hand-in-hand manner. Each bus connects about 20 smart meters. Different types of smart devices are connected to different buses, and then the data is uploaded to the serial port. The server Nport5630-8, in turn, uploads the data to the local monitoring terminal. The specific connection diagram is as follows: The inlet and outlet circuits adopt PZ72L-E4/C multifunctional liquid crystal display instrument, which is a network power meter designed for the power monitoring needs of power systems, industrial and mining enterprises, public facilities, and intelligent buildings. It can measure all conventional power parameters, such as : Three-phase voltage, current, active power, reactive power, power factor, frequency, active power, and reactive power. 3 system function The real-time monitoring system diagram of the substation is the main monitoring screen. It mainly monitors the running status of all loops of the substation in real time. The red represents the closing and the green represents the opening. In the system diagram, you can intuitively see the operating parameters and status of each incoming and outgoing line. You can see all the conventional power parameters on the outgoing side of the transformer, such as: three-phase voltage, current, active power, reactive power, power factor , frequency, active power, etc. As shown below: Substation system map 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 interface to remind the on-duty personnel to deal with it in time. The load limit can be set freely under the corresponding authority. With historical query function, as shown below: Alarm function The event alarm recording function mainly completes the recording of the alarm information events and the time of occurrence within the query period, provides the basis for the personnel on duty, and analyzes the causes of the accident, as shown in the following figure: The parameter reading function mainly inquires into the electrical parameters of the low-voltage outlet circuit. Supports electrical parameter query at any time, with functions such as data export and report printing. This report inquires about the electrical parameters of each low-voltage circuit in the outlet of the transformer substation of Hyatt Regency. The main parameters include: three-phase current, active power and active power. The names of the loops in this report are associated with the database to facilitate the user to modify the loop name. As shown below Electrical parameter reading 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 the distribution circuit of the laboratory building of the office building can be displayed. The user can directly print the report and can save it in EXCEL format to another location. As shown below: Energy report 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. The following figure shows the substation communication status. Communication structure diagram 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 below: Trend graph 4 Conclusion In the application of power distribution facilities today, the distribution security of hotels and other public places is of utmost importance. The application of the Acrel-3000 power management system described in this article at Hyatt Regency Suzhou can realize the use of substation power distribution circuits. The real-time monitoring of electricity can not only show the power status of the loop, but also has the function of network communication. It can be combined with serial server, computer and other components to form an energy management system. The system analyzes and processes the collected data, displays the running status of each distribution circuit in the substation in real time, and has a pop-up alarm dialog box, voice prompts, and a short message warning light, and generates various energy reports. , Analysis of curves, graphics, etc., to facilitate remote meter reading and analysis of electricity, research, the system is safe, reliable, stable, to provide a real and reliable basis for the factory to solve the problem of electricity, and achieved a good corporate efficiency. references: [1]. Ren Chengcheng, Zhou Zhong. Principles and Application Guide for Digital Meters for Electric Power Measurement [M]. Beijing. China Electric Power Press, 2007. 4 [2].Zhou Zhouzhong, et al. Product Selection and Solution for Smart Grid User-end Power Monitoring and Power Management System[M]. Beijing. Machinery Industry Press. 2011.10 Multi Function Pipe End Forming Machine Multi Function Pipe End Forming Machine,Roll Grooving Machine,Pipe Flanging Machine,Automatic Roll Grooving Machine Zhangjiagang heshun machinery manufacturer co.,ltd. , https://www.hsformer.com
