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PRS-7012 Visualized operation and maintenance main station system

With the large-scale popularization and application of intelligent substations, the demand for operation and maintenance of secondary equipment is continuously growing. To address this demand, CYG SUNRI independently developed the PRS-7012 operation and maintenance main station system based on the PRS-7002 secondary equipment state monitoring and intelligent diagnosis system according to the technical specifications formulated by State Grid Corporation of China.The main station system is deployed at the dispatching end of power grid, which can realize online monitoring and intelligent diagnosis and analysis of secondary equipment in the intelligent substation. The specific functions include: operating condition monitoring of secondary equipment, real-time monitoring of virtual circuit, anti-misoperation monitoring, fixed-value management, wave recording management, data query, statistical analysis, virtual terminal CRC online check, SCD file management and control, defect location, monitoring and early warning.

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Scope of Application
The PRS-7367 is a numerical distributed protection intended for protecting and monitoring various primary apparatus including overhead line, underground cable, transformer, capacitor, etc. PRS-7367 can be used in various voltage level, generally ranging from 10kV to 35kV. PRS-7367 can detect and clear all types of internal phase-to-phase.PRS-7367 provides fast and selective protection, monitoring and control for feeders and capacitors. The relay can operate correctly over a wide frequency range in order to accommodate power system frequency variations during disturbances.This relay can sample the analog values from the traditional instrument transformers, or receive the sampled values from the electronic current and voltage transformers (via a merging unit). The binary inputs and outputs of this relay can be configured according to the demands of a practical engineering through the PRS IED Studio configuration tool auxiliary software, which can meet some special requirements of protection and control functions.This relay can fully support the IEC61850 communication protocol and GOOSE function, and can completely meet the demands of a modern digitalized substation.
Advantages
01
The uniform data platform and technology of main operation and maintenance station based on cluster technology can provide a network-based centralized and clustered data platform access interface. Each application module can be deployed on a single machine or in a distributed way according to service requirements, and the engineering implementation is also simpler. In the meantime, the division of modules is reasonable, and the structure is simple and clear, which is more conducive to system expansion and maintenance while improving the reliability of product integration.
02
The remote inspection technology can be employed to receive station inspection report and provide visualized presentation of inspection results, which supports remote trigger inspection. In this way, the efficiency of inspection work is improved, and transition of inspection method from station-based to remote inspection can be realized.
03
The power grid fault analysis technique can be used to carry out overall analysis and display of all protection actions in the event of power grid faults, including action briefing and power grid fault analysis report.
04
The remote diagnosis technique can be adopted to receive intelligent diagnosis report from station in real time, and professional intelligent diagnosis and analysis results and suggestions can be provided.
05
It supports online calling and retrieval of model files and general files in the plant and station, which greatly reduces the configuration workload in main station.
Technical Features
Parameter and index

1

Availability≥99％;

2

Main equipment (such as server, workstation, etc.)   MTBF≥30000h;

3

Event report transmission time≤3 s/station;

4

Fault report transmission time≤10 s/station;

5

Other information transmission time≤5 m/station;

6

Under large-scale failure of system: for plants and   stations with direct connection, time required to transmit all information＜15 m;

7

Under large-scale failure of system: for plants and   stations not with direct connection, time required to transmit all   information＜60 m;

8

Within the main station system, the TCP/IP protocol   is used as the basic network communication protocol;

9

Protection device action information transmission   time＜0.5 m;

10

Protection device fixed-value transmission time＜1 m;

11

Protection device analog quantity measurement transmission   time＜0.5 m;

12

Protection device operating state transmission time＜0.5 m;

13

The communication protocol supports multiple main   station and substation communication protocols.

Data interaction with substation systems from   different manufacturers can be achieved.

It also supports channel monitoring and data flow   monitoring.

14

The channel type is dispatching data network;

15

Under normal circumstance, the server CPU (5 minutes   bay) ≤25％;

16

Under normal circumstance, the human-machine   workstation CPU (5 minutes bay) ≤35％;

17

When processing massive data, the server CPU (5   minutes bay) ≤40％;

18

When processing massive data, the human-machine workstation   CPU (5 minutes bay) ≤50％;

19

CRT screen calling time <3 s;

20

Retrieval data response time<5 s;

21

Under normal circumstance, the average network load   rate (within any 5 minutes) ≤5%;

22

Under power grid accident, the average network load   rate (within any 5 minutes) ≤10%