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Voltage and angle reference value computing simulator

A technology for simulating devices and reference values, applied in instruments, simulators, control/regulating systems, etc., to solve problems such as the inability to simulate the running state realistically

Active Publication Date: 2013-08-21
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 calculation of voltage and angle reference values, so it cannot truly simulate the operation status of the voltage and angle reference value calculation of the UHVDC DC control and protection system

Method used

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Embodiment Construction

[0018] 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.

[0019] figure 2 An embodiment of the voltage and angle reference value calculation simulation device of the present invention is shown, which is used for the simulation of the DC control and protection system of UHVDC power transmission equipment. The voltage and angle reference value calculation simulation device 210 is connected to the converter of the DC control and protection system The input side of the converter firing angle control device 220. The simulation device of the DC control and protection system of UHV DC transmission equipment is as follows: figure 1 shown.

[0020] Such as figure 2 As shown, the voltage and angle reference calculation simulation device of the present invention includes first to third mode selection switches 2111-2113, first...

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Abstract

The invention provides a voltage and angle reference value computing simulator, belongs to the field of electrical measurements, and particularly relates to a voltage and angle reference value computing simulation testing device used in the direct current control and protection system simulation study of direct current extra-high-voltage transmission equipment. The voltage and angle reference value computing simulator comprises a plurality of mode selective switches, extreme value selectors, speed limiting devices, subtractors, a proportional component and a summing unit. A set voltage input end is connected to a first speed limiting device and a third subtractor through a first mode selective switch, a first extreme value selector and a second mode selective switch in sequence, an output end of the third subtractor is connected to an input end of a second speed limiting device, an output end of the second speed limiting device is connected to another input end of the summing unit, and an output end of the summing unit is connected to a current converter firing angle control device. By means of the voltage and angle reference value computing simulator, the operating state of a direct current control and protection device can be simulated and reflected truly, and corresponding simulation results are supplied to the study or design of the direct current control and protection device.

Description

technical field [0001] The invention belongs to the field of electrical measurement, and in particular relates to a voltage and angle reference value calculation simulation test device used for simulation research of a DC control and protection system of UHV DC 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. With the continuous increase of construction projects of UHV AC transmission projects and UHV DC transmission projects in various power grid regions, the power grids in areas where power consumption is concentrated show obvious characteristics of UHV AC-DC hybrid receiving-end power grids with multiple 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 includin...

Claims

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Application Information

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