Real time monitoring and management of distribution circuit power consumption of acrel-2000 power monitoring system in xingqingfang Xinxing square distribution substation

summary  

        Xingqingfang Xinxing square is located in Huzhu Road, Beilin District, Xi'an city 9 Number , The site is a building 6 High rise commercial building , There are two distribution rooms on site, which need to be reconstructed and added with meters this time , The floor distribution box shall also be equipped with an electricity meter for monitoring , At the same time, some multi-function meters have been installed in the distribution room , In total, it is necessary to 180 One low-voltage instrument for monitoring , The background host is located in 1# The duty room next to the distribution room .

1 Demand analysis

        In order to ensure the statistics and analysis of power load for mall operation and management and real-time monitoring of hazard sources . Need on-site 0.4KV The low-voltage distribution cabinet carries out voltage control 、 electric current 、 Real time online monitoring of power and other parameters . Once the monitoring point is monitored, the parameters are abnormal , It can detect and alarm in time , Relevant personnel shall take necessary measures , Avoid safety accidents . The automatic meter reading function saves manpower and material resources , The current trend curve function can intuitively display the working state and time of each circuit .

Data collection

        Automatically collect all data on site 0.4KV Analog data of loop multifunctional instrument .

        Support real-time acquisition 、 Automatic periodic acquisition （ Timing acquisition ） Configurable cycle （1 minute ～24 Hours ）.

        Support multi-threaded processing mechanism , Improve data collection efficiency , It can collect data from multiple devices at the same time .

        The data real-time display adopts the visual display mode of the main wiring diagram of the distribution room , The fault status of each circuit can be seen directly .

Data query and display

        It can facilitate the query of managers at all levels , The query interface meets the requirements of managers at all levels and can support flexible condition combination query .

        The data display function is based on different permissions of different users , It is divided into operation layer 、 management layer 、 The decision-making level and three levels use energy to show .

Rights management

        Give different roles to different users , Can authorize to function submenu 、 Specific archival records 、 Data recording, etc. .

        The system has a reasonable and perfect user security control mechanism , It can effectively protect the information resources in the application environment , Prevent the loss of information 、 Theft and destruction .

Fault alarm

        Fault judgment and alarm have the function of automatic fault judgment and audible and visual alarm . The alarm type includes communication failure between on-site multifunctional instrument and monitoring system, etc . The alarm time is automatically recorded in the system database , It is convenient for users to inquire , The staff can grasp the real-time operation status of the distribution circuit of the substation of xingqingfang project at any time , Find the operation fault of power transformation and distribution and deal with it accordingly , Improve the management efficiency of power transformation and distribution , Improve power system security 、 reliability .

2  System solution

        Encore Acrel-2000 The system is based on the actual situation of the substation of xingqingfang project ,2 Total of distribution rooms and floor distribution boxes 162 Block power meter pass 11 The two buses are respectively connected to the communication management machine and connected to the background system , It ensures the stability and real-time transmission of power monitoring system in substation . As shown in the figure below ：

System structure topology

1） Station control management

        The station control management aims at the management personnel of the power monitoring system , It is the direct window of human-computer interaction . In xingqingfang project, it mainly refers to the monitoring host placed in the monitoring room of the substation .

2） Network communication layer

        The communication layer is mainly composed of bus network . The main function between the microcomputer protection and the field control bus is to realize the interaction between the microcomputer and the field control bus , Centralize the management of distribution system 、 Promotion of information technology 、 Intelligent , The safety of the distribution system is greatly improved 、 Reliability and stability , Really achieved the purpose of unattended .

3） Field equipment level

        The field equipment layer is the data acquisition terminal , Mainly by 0.4KV The utility model is composed of a low-voltage distribution cabinet and a multifunctional power instrument on the floor distribution box , Smart devices are connected via shielded twisted pair cables RS485 Interface , use MODBUS The communication protocol bus is connected to the monitoring host for networking , Realize remote control .

Field connection diagram of low voltage power instrument

        The on-site low-voltage multifunctional power instrument passes through shielded twisted pair in a hand-in-hand manner (RVSP2*1.0) Make a communication connection , Each bus is connected to the low-voltage power instrument 25 Only about . The specific connection diagram is shown below ：

Schematic diagram of communication line connection

 

Conclusion

　　 In today's application of power distribution facilities , The safety of power distribution in large public buildings is very important , This paper introduces Acrel-2000 Application of power monitoring system in xingqingfang project , It can realize the real-time monitoring of the power consumption of the power supply and distribution circuit of the distribution substation . The system realizes the analysis of collected data 、 Handle , Real time display of the operation status of the incoming and outgoing power distribution circuits in the distribution room and floor , Pop up alarm dialog box for load out of limit 、 The alarm sound prompts , The system runs safely 、 reliable 、 Stable , It ensures the power reliability of commercial buildings .