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An analysis method for a distribution network successive fault coupling propagation mechanism

A technology of cascading failure and propagation mechanism, applied in the field of distribution network, can solve the problems of inaccurate simulation analysis structure, difficulty in simulating the arc situation with arc model, large deviation, etc.

Active Publication Date: 2019-05-28
周耘立
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Problems solved by technology

[0004] However, currently in the process of using transient simulation software PSCAD and ATP-EMTP and other simulation software to build simulation models of typical cases, the analysis results of the simulation model are quite different from the actual situation, especially the arc model established by the simulation is difficult to simulate. The actual arc situation leads to inaccurate simulation analysis structure. For this reason, it is necessary to propose a new analysis method for the coupling propagation mechanism of successive faults in the distribution network, so as to analyze and give the general law of the coupling propagation mechanism of faults.

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  • An analysis method for a distribution network successive fault coupling propagation mechanism
  • An analysis method for a distribution network successive fault coupling propagation mechanism
  • An analysis method for a distribution network successive fault coupling propagation mechanism

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[0027] Example embodiments will now be described more fully with reference to the accompanying drawings; however, example embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey exemplary implementations to those skilled in the art, with like numerals referring to like elements throughout.

[0028] It will also be understood that when an element is referred to as being “between,” “connected to,” or “coupled to” another element, it can be directly between, directly connected to, or coupled to the other element. one element, or intervening elements may be present. In contrast, when an element is referred to as being "directly between," "directly connected to" or "coupled to" another element, there are no intervening elements present.

[0029] Now taking the typical case of successive faults of mult...

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Abstract

The invention discloses an analysis method for a distribution network successive fault coupling propagation mechanism, and the method comprises the steps of 1, selecting a high-voltage power transmission line with a multi-feeder successive fault, and collecting the related parameters of the high-voltage power transmission line; 2, establishing a high-voltage side simulation model, and establishinga high-voltage side simulation model feeder line according to related parameters of the high-voltage power transmission line; 3, connecting an arc model to the feeder line, recording a simulation result of the arc model, and comparing the simulation result with an actual recording waveform and a sequence record. A simulation model is built through ATP-EMTP simulation software, and by selecting and improving an arc model, a simulation result is conveniently compared with an actual recording waveform and an event sequence record, and feedback improvement is carried out on the established simulation model and parameter setting according to the comparison, so that the development process of a system instable ground fault is analyzed, and a general rule of a fault coupling propagation mechanism can be given.

Description

technical field [0001] The invention belongs to the technical field of distribution networks, and in particular relates to an analysis method for the coupling propagation mechanism of successive faults in a distribution network. Background technique [0002] The analysis of the coupling propagation mechanism of successive faults in distribution network has always been an important technical issue in the field of distribution network. The analysis method of establishing the coupling propagation mechanism of successive faults in distribution network is a relatively effective analysis method at present, but the establishment and analysis of simulation models can analyze the system The development history of unstable ground faults can give the general law of fault coupling propagation mechanism. [0003] Aiming at the uneven distribution of ground potential in the ground grid when the substation is struck by lightning, the ATP-EMTP software is used to simulate and analyze the li...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 周耘立
Owner 周耘立
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