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Reactive power control simulator

A power control and simulation device technology, applied in general control systems, control/regulation systems, instruments, etc., can solve problems such as the inability to truly simulate the tap position and operating status

Active Publication Date: 2015-05-13
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the simulation model does not involve the simulation of the tap position, so it cannot truly simulate the tap position operation status of the HVDC DC control and protection system

Method used

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Embodiment Construction

[0021] In order to better understand the above-mentioned technical solution of the present invention, a further detailed description will be given below in conjunction with the accompanying drawings and embodiments.

[0022] figure 2 An embodiment of the reactive power control simulation device of the present invention is shown, which is used for the simulation of the DC control and protection system of the HVDC transmission equipment. The reactive power control simulation device of the present invention is the main functional unit of the reactive power control device 270 of the DC control and protection system. The simulation device of the DC control and protection system of HVDC transmission equipment is as follows: figure 1 shown. The reactive power control device 270 is a link in the DC transmission control system that controls the reactive power of the converter station. It controls the input capacity or Change the reactive power absorbed by the converter, and control...

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Abstract

The invention belongs to the field of electrical measurement and relates to a reactive power control simulator, in particular to a testing device for simulation study of a direct current control and protection system of a direct current high-voltage transmission device. A reactive calculated value signal end and a reactive reference value signal end are connected to a second arithmetic operation element and a third arithmetic operation element through a first arithmetic operation element and a first proportioning element. A limitation reactive value signal end is connected with the second arithmetic operation element and the third arithmetic operation element. A reactive control signal end is connected with a first AND gate and a second AND gate. The second arithmetic operation element is connected to the first AND gate through a first Schmitt trigger. The third arithmetic operation element is connected to the second AND gate through a second Schmitt trigger. The first AND gate is connected to a reactive increasing signal end of a filter through a second timer. The second AND gate is connected to a reactive decreasing signal end of the filter through a first timer. The reactive power control simulator can truly simulate and reflect the operation state of a direct current control protector. Corresponding simulating results are provided for research or design of the direct current control protector.

Description

technical field [0001] The invention belongs to the field of electrical measurement, and in particular relates to a tap position simulation test device used for simulation research of a DC control and protection system of high-voltage direct current transmission equipment. Background technique [0002] The ever-increasing demand for electricity has led to the development of power transmission systems in the direction of long distance, large capacity and high stability. As the construction projects of UHV AC transmission projects and HVDC transmission projects in various power grid regions continue to increase, the power grids in areas where power consumption is concentrated show obvious characteristics of UHV AC-DC hybrid receiving-end power grids with multi-DC feeds. The power grid structure is tight, and the electrical distance between multiple AC and DC lines is closer. After the UHV and EHV AC systems fail, it is easy to cause multiple DCs including high-voltage DCs to f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B17/02
Inventor 崔勇郭强
Owner STATE GRID CORP OF CHINA
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