Control method of double-valve-base control system
A technology of valve base control and control method, applied in information technology support systems, power network operating system integration, output power conversion devices, etc. To achieve the effect of improving stability, ensuring stability and security
Pending Publication Date: 2020-03-24
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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Problems solved by technology
[0003] Therefore, the technical problem to be solved in the present invention is to overcome the dual-system control method of the traditional valve-based control system in the prior art, which is generally only aimed at the MMC valve, and is suitable for a modulation method with slower pulse changes, but in pulse width modulation (PWM ) in the case of rapid carrier changes, it is difficult to achieve coordinated and unified control of the dual-system control system, thus providing a control method for the dual-valve-based control system
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[0030] An embodiment of the present invention provides a control method for a dual-valve base system, which is applied to a multi-valve base control system requiring coordinated control, such as figure 1 As shown, the double valve base control system includes: control module, valve base control module, pulse distribution chassis module, converter valve drive module and converter valve module, wherein the control method includes:
[0031] SA1: The control module generates the main modulation wave and the standby modulation wave and sends them to the valve base control module.
[0032] The embodiment of the present invention is applied in a double-valve base control system, such as figure 2 As shown, the control module includes a main control unit and a backup control unit. When the double valve base control system is in normal operation, the valve base control system is the main valve base control system, and the two control units generate the main modulation wave and the back...
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The invention provides a control method of a double-valve-base control system. The control method comprises: a control module generating a main modulation wave and a standby modulation wave and sending the main modulation wave and the standby modulation wave to a valve base control module; the valve base control module generating a main carrier wave and a standby carrier wave, generating a main PWM wave and a standby PWM wave according to the received main modulation wave and standby modulation wave, and sending the main PWM wave and the standby PWM wave to the pulse distribution case module;the pulse distribution case module receiving the main PWM wave and sending the main PWM wave to the converter valve driving module; the converter valve driving module converting the received main PWMwave into an electric signal and sending the electric signal to the converter valve module; and the converter valve module controlling the on-off state of the valve base according to the received electric signal. According to the invention, under the condition that the double-valve-base control system operates normally, only the main control system can control the running state of the converter valve, when the main control system breaks down, the standby control system can be switched to run in time, and due to the fact that carriers generated by the double systems are the same, when the maincontrol system and the standby control system are switched, the double-valve-base control system can run stably.
Description
technical field [0001] The invention relates to the technical field of control and protection testing of power electronic devices, in particular to a control method for a double valve base control system Background technique [0002] As a power flow control device, the traditional unified power flow controller (UPFC) has been verified in many projects at home and abroad for its continuous control of system voltage, active power flow and reactive power flow. However, with the increase of voltage level, device capacity and device volume of traditional UPFC, more and more valve-based control modules of modular multilevel converter (MMC) structure are required, and the cost increases. In order to reduce costs, adopt IGBT series technology; at the same time, because the valve-based control system is responsible for the control and protection of the valve, the high-voltage and ultra-high-voltage flexible AC transmission system has higher requirements for the reliability and sensit...
Claims
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IPC IPC(8): H02M1/32H02J9/06H02J3/18
CPCH02M1/32H02J9/06H02J3/1814Y02B70/10Y04S20/20Y02E40/30Y02B70/30
Inventor 杨贵娟陈国富袁佩娥贾晓光才志远戴凤娇陆翌许烽王朝亮
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD