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High-voltage STATCOM control platform for switching main and standby dual-control systems

A system switching and control platform technology, applied in flexible AC transmission systems, reactive power adjustment/elimination/compensation, etc., to reduce the difficulty and risk of debugging

Inactive Publication Date: 2019-08-09
NANCHANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] There are currently no patents or papers describing the LVRT control method in detail

Method used

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  • High-voltage STATCOM control platform for switching main and standby dual-control systems

Examples

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Effect test

Embodiment 1

[0019] Example 1: See figure 1 , a high-voltage STATCOM control platform with active and standby dual control systems switching, including A system FCK404-100 chassis, A system FCK401-100 chassis, A system FCK402-100 chassis, B system FCK404-100 chassis, B system FCK401-100 Chassis, FCK402-100 chassis of system B, among them, FCK404-100 chassis of system A and FCK404-100 chassis of system B are active and standby switching chassis, which are mainly responsible for active and Standby switching chassis, A system FCK401-100 chassis and B system FCK401-100 chassis are control and protection chassis, mainly responsible for sampling, input and output, control and protection functions; A and B subsystems each contain a set of control protection Chassis, A system FCK402-100 chassis and B system FCK402-100 chassis are optical fiber transceiver boxes, mainly used for the control of high-voltage STATCOM sub-modules (also called chain links); A and B two sets of subsystems each contain a ...

Embodiment 2

[0049] Embodiment 2. On the basis of Embodiment 1, the A system FCK404-100 chassis of this design is equipped with a measurement unit, a switch input and output unit, a system protection and interface unit, and the system protection and interface unit are respectively connected to the measurement unit and the switch. In and out unit. The structure of the FCK404-100 chassis of system A is the same as that of the FCK404-100 chassis of system B. The FCK404-100 chassis of system A and the FCK404-100 chassis of system B detect the active / passive status of system A / B, and determine their own operating status through the mutual transmission of optical fibers. Each system detects its own status separately to confirm whether A_OK and B_OK are valid. Once A_OK is invalid, it is considered that the self-test is abnormal. At this time, if B_OK is valid, it will switch to the B system. If A_OK and B_OK are invalid at the same time, trip and stop.

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Abstract

The invention discloses a high-voltage STATCOM control platform for switching main and standby dual-control systems. The high-voltage STATCOM control platform comprises an A system FCK404-100 cabinet,an A system FCK401-100 cabinet, an A system FCK402-100 cabinet, a B system FCK404-100 cabinet, a B system FCK401-100 cabinet and a B system FCK402-100 cabinet. The A system FCK404-100 cabinet is connected with the A system FCK401-100 cabinet, the A system FCK402-100 cabinet, the B system FCK404-100 cabinet, an A phase FCK403-100 cabinet, a B phase FCK403-100 cabinet and a C phase FCK403-100 cabinet. The high-voltage STATCOM control platform for switching main and standby dual-control systems divides a single set of systems into two sets of A and B standby sub systems which are in mutual standby, and the two sets of systems are identical in architecture, so that the debugging difficulty and risk are reduced.

Description

technical field [0001] The invention relates to a control platform, in particular to a high-voltage STATCOM control platform for active and standby dual control systems switching. Background technique [0002] With the large-scale centralized and decentralized access of new energy to the power grid, the structure of the power transmission and distribution network of the power system has also changed. The traditional strong AC interconnection is transformed into an AC ultra-high voltage power grid, and three vertical and three horizontal DC long-distance interconnections. Due to the distance factor and the large load of motors, a large amount of reactive power needs to be consumed. On the other hand, the power system has higher and higher requirements on power quality, especially reactive power. Static Synchronous Compensator (Static Synchronous Compensator, STATCOM has the advantages of fast response, small size, wide power adjustment range, and is not easy to cause resona...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCH02J3/18Y02E40/10
Inventor 张扬刘静黄志开杨小品周正华张文华王翠章顺华
Owner NANCHANG INST OF TECH
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