A statcom control system based on redundant controller
A technology for control systems and controllers, applied in general control systems, control/regulation systems, flexible AC transmission systems, etc., can solve problems such as redundancy of main control boards, save hardware costs, improve reliability and stability, The effect of simplifying the work of the control system
Active Publication Date: 2015-12-02
STATE GRID CORP OF CHINA +1
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Problems solved by technology
Switching can only be controlled by controlling the switching chassis, and the two main control chassis include the main control board, expansion board, and power supply board, but the acquisition unit and the switch control unit share one set, which essentially only realizes the redundancy of the main control board.
Method used
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Embodiment 1
[0042] Such as figure 2 Shown is the structural representation of the embodiment of a kind of STATCOM control system based on redundant controller provided by the present invention, by figure 2 It can be seen that the embodiment of the control system includes: A, B two sets of regulation and protection controllers, A, B, C three-phase actuators. The two sets of controllers A and B communicate with each other by adjusting the control unit and using optical fiber as the medium. The control and adjustment units of the two sets of controllers communicate with the valve control units of the A, B, and C three-phase actuators respectively through optical fibers.
[0043] Two sets of regulation and protection controllers, according to the collected AC voltage and current signals, the DC voltage value uploaded by the actuator, and the fault status of the module, complete the regulation calculation, fault judgment processing, device operation status control, etc., and control command...
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The invention provides an STATCOM control system based on a redundant controller. The STATCOM control system comprises an adjusting and protecting controller and an actuator, wherein the adjusting and protecting controller comprises an adjusting and protecting controller body A and an adjusting and protecting controller body B, the adjusting and protecting controller body A and the adjusting and protecting controller body B are identical in structure, connected mutually in a communication mode and respectively connected with the actuator in a communication mode; the adjusting and protecting controller comprises an analog quantity collecting unit, a control adjusting unit, a protecting unit, a wave recording unit, an on-off input unit, an on-off output unit and a communication expansion unit; the actuator comprises a valve control unit, a wave recording unit and an optical input and output unit; the adjusting and protecting controller body A or the adjusting and protecting controller body B is connected with the valve control unit of the actuator in a communication mode through the control adjusting unit and issues adjusting instructions and control instructions to the actuator. According to the control system, redundant switching is achieved among the functions of analog quantity collecting, core algorithm adjusting, device inputting and exiting, wave recording and monitoring and the like and hardware constitution, and reliability and stability of the STATCOM control system are greatly improved.
Description
technical field [0001] The invention relates to the technical field of power electronic control, in particular to a STATCOM control system based on a redundant controller. Background technique [0002] STATCOM (Static synchronous compensator, static synchronous compensator) has the advantages of low power consumption, fast response, less harmonic pollution, and small footprint. Especially when the system voltage fails, it can quickly provide reactive power support and ensure the stability of the bus voltage. It is an ideal device for controlling power quality and is currently widely used in transmission and distribution networks. With the continuous development of power electronics technology, the equipment for controlling power quality is constantly developing towards high voltage and large capacity, so the performance requirements of these equipment control systems are getting higher and higher. The dual control system that can reliably realize the automatic switching of ...
Claims
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IPC IPC(8): H02J3/18G05B9/03
CPCY02E40/10
Inventor 孙丽敬赵小英赵瑞斌时智勇郑青青
Owner STATE GRID CORP OF CHINA