Intelligent substation secondary loop comprehensive performance test system and working method thereof

A comprehensive performance test and smart substation technology, applied in the direction of circuit devices, measuring devices, measuring devices, etc., can solve the problems that cannot meet the needs of smart substations, cannot guarantee the certainty of time delay, and lose messages, so as to achieve the effect of accurate testing

Active Publication Date: 2019-06-18
STATE GRID CHONGQING ELECTRIC POWER
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Problems solved by technology

It should be emphasized that although the use of switching technology improves the delay determinism of Ethernet communication to a certain extent, it cannot meet the requirements of the most demanding applications in smart substations.
Especially when the power grid fails or the scale of the syste...

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  • Intelligent substation secondary loop comprehensive performance test system and working method thereof
  • Intelligent substation secondary loop comprehensive performance test system and working method thereof
  • Intelligent substation secondary loop comprehensive performance test system and working method thereof

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Embodiment Construction

[0050] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0051] Such as Figure 1-6 As shown, the transmission delay of the secondary circuit of the smart substation is mainly composed of the preprocessing of the sampling signal by the electronic transformer, the processing delay of the high-precision time synchronization module, the synchronization operation of the merging unit and the delay of the data processing operation, and the delay of the switching network. It consists of several parts such as transmission delay.

[0052] The multi-type data acquisition unit includes: a high-precision...

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Abstract

The invention provides an intelligent substation secondary loop comprehensive performance test system and a working method thereof. The transmission delay of a secondary loop of an intelligent substation is mainly composed of several parts: sampling signal pre-processing delay of an electronic transformer, processing delay of an integrator, synchronous operation and data processing operation delayof a merging unit and transmission delay of a switching network and the like. The invention designs a high-precision timing synchronization implementation method, hardware design of a message acquisition module, a switch value acquisition module and a control system for the intelligent substation secondary loop comprehensive performance test. The system realizes accurate test of intelligent substation secondary loop comprehensive performance and provides technical support for asynchronous error check of the electronic transformer.

Description

technical field [0001] The invention relates to the field of electronic circuit control, in particular to a comprehensive performance testing system and working method of a secondary circuit of an intelligent substation. Background technique [0002] The secondary system of smart substation is composed of smart components, mainly including protection devices, measurement and control devices, smart terminals and merging units, etc. Its main features are digital data collection and networked information interaction. These technological changes will inevitably have an impact on the comprehensive performance of the secondary circuit of the smart substation. For example, the tripping delay of the quick-break protection is longer than that of the traditional substation, and the instability of the synchronization device may cause the line / transformer differential protection to malfunction. The reasons for the impact are mainly reflected in the following aspects: [0003] (1) The ...

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Application Information

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IPC IPC(8): G01R31/00H02J13/00
Inventor 文俊杜雪松朱燕陈柯雨王休成邹刚何霖曹丹
Owner STATE GRID CHONGQING ELECTRIC POWER
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