A detection method for a line relay protection device
A relay protection device and detection method technology, which is applied in the field of physical simulation of power systems, can solve the problems of long test period, inability to fully simulate electromechanical characteristics, and many resources occupied by dynamic and touch tests, so as to save manpower and facilitate safe operation , the effect of real and reliable data
Active Publication Date: 2016-04-20
STATE GRID CORP OF CHINA +1
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However, the digital simulation test system is based on the digital simulation method, and the simulation results are relatively ideal. Although it is an important means of scientific research, it cannot completely simulate some electromechanical characteristics of real equipment in the actual field.
[0006] 3. The power system dynamic simulation laboratory has the power system dynamic simulation test capability, which can truly simulate the dynamic characteristics of the real power grid including line length, line impedance angle, power system capacity, power plant capacity, and substation switch wiring. This is based on real The simulation test of the physical model can carry out strict assessment of the relay protection device with high reliability. However, the dynamic test takes up a lot of resources and the test period is long, which cannot meet the needs of multiple users at the same time.
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[0036] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0037] Such as figure 1 as shown, figure 1 Generate and apply the structural block diagram for the power system line protection waveform database; through sorting and classifying the transmission line system test models with recorded data in the existing test process to determine the retrieval catalog, a line relay protection waveform database is formed, which is convenient for future waveform reproduction and Analysis. Because its data truly records the steady state and transient process of the dynamic simulation test of the power system, the detection of the relay protection device can be realized by using the waveform reproduction, and the effect is the same as that of the dynamic test.
[0038] The transmission line system test model database includes the transmission line system and its corresponding fault settings. Determi...
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The invention provides a detection method for a line relay protection device. The method comprises the steps of: establishing a transmission line system test model database, determining transmission line system test models, applying a fault to the power transmission line system after charged operation of the power transmission line system, obtaining a continuous wave record data which operates in a stable state and a fault wave record data which operates in a transient state, generating test waveforms through the power transmission line system test models and the models in the waveform database, and detecting the test waveforms according to demands of tests and the models in the waveform database. According to the method, abundant test waveforms in an electric power system dynamic simulation room are used, and through retrieval, detection is carried out on the relay protection waveform database via a waveform reproduction technique, so that the test efficiency is greatly raised, losses of physical devices are reduced, and at the same time, fault standard wave form playback tests are realized, and a base for detection analysis of lines is provided.
Description
technical field [0001] The invention relates to a method in the field of physical simulation of a power system, in particular to a detection method for a line relay protection device. Background technique [0002] The power system relay protection device protects the safe operation of the power system. It can respond to the faults and abnormal working conditions of electrical equipment and automatically, quickly and selectively act on the circuit breaker to remove the faulty equipment from the system to ensure no faulty equipment. Continue normal operation, limit accidents to a minimum, improve the reliability of system operation, and ensure safe and continuous power supply to users to the greatest extent. The power system dynamic simulation test is an important means to test whether the relay protection device can be put into operation in the power system. [0003] There are three main detection methods and systems for existing intelligent relay protection devices; [000...
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IPC IPC(8): G01R31/00G01R31/08
Inventor 贾琰詹智华余越周春霞詹荣荣周泽昕崔佳李岩军张晓莉王剑宇赵玉韬
Owner STATE GRID CORP OF CHINA