Research and application of power monitoring system in sports training center

summary  

      The national football North training base project of Inner Mongolia sports training center is located in the new urban area of Hohhot . There is a total of 1 One switching station and two distribution rooms , There are... In the switching station 13 Microcomputer protection ,1# There are... In the distribution room 10 Microcomputer protection ,2# There are... In the distribution room 2 Microcomputer protection .

1 Demand analysis

      In order to ensure the statistics and analysis of the building power load of the training center and the real-time monitoring of hazard sources . Need on-site 10KV High voltage distribution cabinet carries out voltage 、 electric current 、 Real time on-line monitoring of power, switching signals 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 10KV Analog data of circuit microcomputer protection , Automatically collect on-site switching state, fault state and other switching value data .

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 opening and closing of each circuit switch and the fault status can be seen visually .

Data query and display

      It can facilitate the query of managers at all levels , The query interface can meet the requirements of managers at all levels and 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 . Alarm types include switch failure , voltage 、 Current out of limit , Communication failure of on-site microcomputer protection and monitoring system, etc . The alarm time is automatically recorded in the system database , It is convenient for users to inquire , The staff can master the real-time operation status of each power distribution circuit in the power distribution room of Inner Mongolia sports training center 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 project site of Inner Mongolia sports training center ,3 Total of distribution rooms 25 The microcomputer integrated protection adopts shielded twisted pair 8 The root buses are respectively connected to the acquisition box communication management machine in each distribution room , It ensures the stability and real-time transmission of power monitoring system in substation . As shown in the figure below ：

 

Topology diagram of switching station system

 

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 the project of Inner Mongolia sports training center, it mainly refers to the monitoring host placed in the monitoring room .

2） Network communication layer

      The communication layer is mainly composed of bus network . The main function of bus network is to realize the data interaction between on-site microcomputer protection and multi-functional instruments and station control management , 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 10KV The microcomputer protection device on the distribution cabinet is composed of , 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 microcomputer protection device

      The on-site microcomputer protection device passes through the shielded twisted pair in a hand-in-hand manner (RVSP2*1.0) Make a communication connection , Number of microcomputer protection connected to each bus 4 Only about . The specific connection diagram is shown below ：

 

3  system function

      The real-time monitoring system diagram of distribution substation is the main monitoring picture , It mainly monitors the operation status of all power distribution circuits in each power distribution room of Inner Mongolia sports training center in real time . In the system diagram, you can intuitively see each way 10KV Operating parameters and status of distribution cabinet circuit , Such as ： Three phase voltage 、 electric current 、 Active power 、 Reactive power 、 power factor 、 Frequency, etc. .

Event alarm recording function , It is mainly used to record the alarm information events and occurrence time within the query time period , Provide basis for personnel on duty and analyze the cause of the accident .

Parameter meter reading function , Mainly for 10KV Query the electrical parameters of each circuit of the distribution cabinet . Support electric parameter query at any time , It has the functions of data export and report printing . The report is associated with each circuit name and database , It is convenient for users to modify the circuit name .

Schematic diagram of system communication structure , It mainly displays the networking structure of the system , The system adopts hierarchical and distributed structure , At the same time, monitor the communication status of bay equipment . Red indicates normal communication , Green indicates abnormal communication .

Load curve interface , You can query the historical power load curve of each circuit .

Rights management , You can set different permissions for different users , Prevent unauthorized operation .

4  Conclusion

In today's application of power distribution facilities , The safety of power distribution in public buildings is very important , This paper introduces Acrel-2000 Application of power monitoring system in Inner Mongolia sports training center 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 each distribution circuit in the distribution room , Opening and closing 、 When the load exceeds the limit, an alarm dialog box pops up 、 The alarm sound prompts , The system runs safely 、 reliable 、 Stable , It ensures the power reliability of public buildings .