Current margin compensation simulation device

A technology of current margin compensation and simulation device, which is applied in instruments, simulators, control/regulation systems, etc., and can solve problems such as the inability to truly simulate the current margin compensation operating state.

Active Publication Date: 2015-07-01
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 current margin compensation, so it cannot truly simulate the operating state of current margin compensation of HVDC DC control and protection system

Method used

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  • Current margin compensation simulation device
  • Current margin compensation simulation device

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Embodiment Construction

[0017] 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.

[0018] figure 2 An embodiment of the current margin compensation simulation device of the present invention is shown, which is used for the simulation of the DC control and protection system of HVDC power transmission equipment. The current margin compensation simulation device is connected to the output of the pole power control device 250 of the DC control and protection system side. The simulation device of the DC control and protection system of HVDC transmission equipment is as follows: figure 1 shown.

[0019] Such as figure 2 As shown, the current margin compensation simulation device of the present invention includes a subtractor 2531, a first mode selection switch 2532, a rate limiter 2533, an integrator 2534 and an adder 2537;

[0020] The current...

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Abstract

The invention discloses a current margin compensation simulation device, belongs to the field of electronic measuring, and relates to a current margin compensation simulation device used for simulation research of a direct current controlling protecting system of high-voltage direct current transmission equipment. The current margin compensation simulation device comprises a subtractor, a first mode selection switch, a speed limiting device, an integrator, a summator, a second mode selection switch and an inertia element. An electrode power controlling device is connected to the subtractor and the summator, and the subtractor is connected to a neutral current signal end of a thyristor converter. The subtractor is connected to the speed limiting device through the first mode selection switch. The speed limiting device is connected to the summator through the integrator. An output end of the summator is used as an output end of the electrode power controlling device, and the output end of the summator is connected to a converter trigger angle controlling module of the direct current controlling protecting system. The current margin compensation simulation device can simulate and reflect an operation state of the direct current controlling protecting device truly, and provide a corresponding simulation result for the researching and design of the direct current controlling protecting device.

Description

technical field [0001] The invention belongs to the field of electrical measurement, and in particular relates to a current margin compensation 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-v...

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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