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System and method for controlling STATCOM and high-voltage direct-current power transmission system

A high-voltage direct current and power transmission system technology, applied in the field of power transmission, can solve problems affecting on-site debugging, poor simulation accuracy, and restricting the effective implementation of coordination strategy schemes, and achieve the effects of helping on-site debugging, improving effective implementation, and high simulation accuracy

Active Publication Date: 2016-07-13
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the above-mentioned coordination strategy is mainly studied by the offline simulation software of the power system, but the inventors of the present application found that it is difficult for the offline simulation software of the power system to accurately simulate the dynamic response characteristics between STATCOM and the HVDC transmission system, and the simulation accuracy poor, which greatly restricts the effective implementation of the coordination strategy between STATCOM and the HVDC transmission system, and affects on-site commissioning

Method used

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  • System and method for controlling STATCOM and high-voltage direct-current power transmission system
  • System and method for controlling STATCOM and high-voltage direct-current power transmission system

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Embodiment 1

[0032] An embodiment of the present invention provides a control system for STATCOM and HVDC transmission system (hereinafter referred to as the control system), specifically, as figure 1 As shown, the control system includes: real-time simulator 1, interface system 2, HVDC control and protection system 3 and STATCOM control and protection system 4.

[0033]The specific connection methods between the above structures are as follows: the real-time simulator 1 is connected to the interface system 2 through optical fibers, the interface system 2 is connected to the high-voltage DC control and protection system 3 through cables, and the interface system 2 is also connected to the interface system 3 through cables and optical fibers. The STATCOM control and protection systems 4 are connected to each other, and the high-voltage direct current control and protection system 3 is connected to the STATCOM control and protection system 4 through optical fibers.

[0034] The specific func...

Embodiment 2

[0060] The embodiment of the present invention provides a control method of STATCOM and HVDC transmission system (hereinafter referred to as the control method), the control method is used in the control system of STATCOM and HVDC transmission system described in Embodiment 1, the control method include:

[0061] Step 1: The real-time simulator calculates the first input signal of the HVDC control and protection system and the second input signal of the STATCOM control and protection system according to the initial state of the primary model of the HVDC power transmission system and the initial state of the primary model of STATCOM, and sends to The interface system outputs the first input signal and the second input signal, wherein the first input signal includes AC voltage, AC current, DC voltage, DC current, switch status signal, switch status signal and switch signal of transformer tap position , the second input signal includes an AC voltage, an AC current, a switch state...

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Abstract

The invention discloses a system and method for controlling a STATCOM and a high-voltage direct-current power transmission system, relates to the technical field of power transmission, and solves the technical problem in the prior art that a dynamic response characteristic between a STATCOM and a high-voltage direct-current power transmission system is difficult to simulate accurately, and simulation precision is poor. The system for controlling the STATCOM and the high-voltage direct-current power transmission system includes a real-time simulation machine, an interface system, a high-voltage direct-current control protection system and a STATCOM control protection system, wherein the real-time simulation machine and the interface system are connected with each other through an optical fiber, the interface system and the high-voltage direct-current control protection system are connected with each other through a cable, the interface system and the STATCOM control protection system are connected with each other through a cable and an optical fiber, and the high-voltage direct-current control protection system and the STATCOM control protection system are connected with each other through an optical fiber. The system and method for controlling the STATCOM and the high-voltage direct-current power transmission system are used for performing coordination control on the STATCOM and the high-voltage direct-current power transmission system.

Description

technical field [0001] The invention relates to the technical field of power transmission, in particular to a control system and method for a STATCOM and a high-voltage direct current transmission system. Background technique [0002] In order to improve the operation regulation capability of the HVDC transmission system, it is necessary to install a static synchronous compensator (English full name: Static Synchronous Compensator, English abbreviation: STATCOM) in the DC converter station. The AC bus voltage of the flow station improves the operating conditions of the AC system. Since usually the DC converter station itself has a certain reactive power compensation capability, after the STATCOM is connected to the DC converter station, the reactive power compensation output by the DC converter station and the STATCOM need to cooperate with each other through a coordination strategy in order to stabilize the DC converter. The AC bus voltage of the flow station improves the ...

Claims

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Application Information

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IPC IPC(8): H02J3/16H02J3/36
CPCH02J3/16H02J3/36H02J2203/20Y02E40/10Y02E40/30Y02E60/60
Inventor 胡云郭琦李书勇关红兵
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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