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Multi-interval simulation testing system based on field application of digital substation

A simulation test, multi-interval technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of not performing joint debugging of the whole station system, and can not completely reflect the working conditions of the whole station system, and achieve reliable operation correctness effect

Inactive Publication Date: 2018-05-29
STATE GRID CORP OF CHINA +1
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AI Technical Summary

Problems solved by technology

The debugging of the secondary protection system of the smart substation has become the most important link. At present, the test of the relay protection system of the smart substation is mainly based on the single component test. It cannot completely reflect the actual operating conditions of the total station system

Method used

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  • Multi-interval simulation testing system based on field application of digital substation
  • Multi-interval simulation testing system based on field application of digital substation
  • Multi-interval simulation testing system based on field application of digital substation

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Embodiment Construction

[0016] In order to describe the technical solution disclosed in the present invention in detail, further elaboration will be made below in conjunction with the accompanying drawings and specific embodiments.

[0017] The commissioning process of smart substation mainly includes factory acceptance test and site acceptance test, both of which are tests on the function and performance of single devices. For example: SMV receiving test, Goose sending and receiving test, SMV jitter test, merging unit synchronization test, protection setting verification test, merging unit timing accuracy and punctuality accuracy test, etc. In addition, there are many kinds of protection devices in substations, such as line protection devices, busbar protection devices, main transformer protection devices, etc. When a fault actually occurs, different protection devices have corresponding actions according to different fault points, for example, when When the bus differential is faulty, the bus prote...

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Abstract

The invention discloses a multi-interval simulation testing system based on field application of a digital substation. The testing system utilizes DSP technology to carry out a simulation test a faultpoint in a power line and the action logic between protection devices thereof, and includes a simulation host and analog quantity output slaves. The simulation host and the analog quantity output slaves are connected via optical fibers. The testing method used in the invention is to place the plurality of analog quantity output slaves separately in front of merging unit devices at different intervals, use the simulation host to remotely and synchronously control the simulation output through the optical fibers, and at the same time, test the plurality of merging units with increased quantity.Goose signals returned by the protection device actions can be received and switch quantity action nodes can also be received to realize the closed-loop test, the joint adjustment of an intelligent power grid system is achieved, and the working conditions when the entire station system actually operates is truly reflected.

Description

technical field [0001] The invention belongs to power system fault testing and simulation, in particular to a multi-interval simulation testing system based on digital substation field application. Background technique [0002] The substation is the place where the voltage and current of electric energy are transformed, concentrated and distributed in the power system, so the quality of the secondary system of the substation is directly related to the normal and safe operation of the power system itself, and also to the normal and normal social economy. Development and the safety of people's lives and properties have a major impact. Especially in recent years, the great development of digital substation. The debugging of the secondary protection system of the smart substation has become the most important link. At present, the test of the relay protection system of the smart substation is mainly based on the single component test. It cannot fully and truly reflect the work...

Claims

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Application Information

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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 杨高峰谢兵曾志安刘华毅邹刚张洪涛吴松麟
Owner STATE GRID CORP OF CHINA
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