Offline simulation system based power system simulation test method

A simulation system and power system technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of high requirements for operators and users, lack of real-time computing capabilities, and few applications of power testing, so as to achieve maintenance work Small amount, easy to realize closed-loop test, easy to expand the effect

Inactive Publication Date: 2011-04-06
SHANDONG ELECTRIC POWER SCHOOL
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Problems solved by technology

Compared with physical simulation test, real-time digital simulation has the advantages of small footprint, easy system expansion and modification, accurate model, and perfect function, but its high cost and high requirements for operators and users also limit the popularization of this type of test method application
[0004] The power system offline simulation system has

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  • Offline simulation system based power system simulation test method
  • Offline simulation system based power system simulation test method
  • Offline simulation system based power system simulation test method

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] 1. Power system simulation calculation based on off-line simulation system

[0031] Use power system offline simulation systems such as ATP / EMTP, PASCAD / EMTDC, Matlab, etc. to build corresponding power system models according to test requirements, such as figure 1 As shown, the model is a model of a double-terminal power supply with a single-circuit transmission line built for power system fault analysis and relay protection device testing. Control the running state of the model and the duration of different running states. The duration of each state is as follows: figure 2 As shown, four different operating states are set, including normal operating state, fault continuous state, fault isolation state, and reclosing state. Each operating state is set with a different duration. After the setting is completed, the offline simulation calculation...

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Abstract

The invention relates to an offline simulation system power system simulation test method, including that: (1) an offline simulation system is run on a computer, a power system simulation model is built, and simulation data files of the simulation model recording voltage and current data under different operational conditions are acquired; (2) a data format conversion tool is utilized to convert the data format of the simulation data file into a format required by a digital-analog conversion device, and data is screened, so as to meet different test requirements; (3) the digital-analog conversion device is utilized to convert simulation data into a real analog signal; (4) the voltage and current signals are sent to a device to be tested, test is carried out, test result is sent out in switching value form, and the switching value is acquired and recorded by a digital input acquisition device, thus completing test. The invention has the advantages that no real-time simulation calculation is required, simulation accuracy is high, simulation system is convenient to modify and expand, cost is low, operation is easy and applicability is strong.

Description

technical field [0001] The invention relates to a power system simulation test method, in particular to a power system simulation test method based on an off-line simulation system. Background technique [0002] The methods for testing the protection or control devices used in power systems mainly include tests based on physical simulation systems and tests based on real-time digital simulation systems. Among them, the test scheme based on the physical simulation system includes dynamic simulation test and static simulation test. The difference between the two mainly lies in whether the simulated system includes models of rotating parts such as generators and motors. Dynamic simulation includes a generator model, which can more realistically simulate the operating conditions of the power system and better simulate the electromagnetic and electromechanical transient processes of the power system, and has become one of the important means of power system testing. All static s...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 王焕金荀堂生宋志明张琳琳丛伟
Owner SHANDONG ELECTRIC POWER SCHOOL
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