Fault scenario simulation method for active distribution network based on characteristic waveform

A technology of distribution network faults and characteristic waveforms, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as difficulty in popularization and high cost of fault simulation verification

Active Publication Date: 2015-12-02
SHANGHAI WISCOM SUNEST ELECTRIC POWER TECH
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  • Abstract
  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for simulating active distribution network fault scenarios based on characteristic wa

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  • Fault scenario simulation method for active distribution network based on characteristic waveform
  • Fault scenario simulation method for active distribution network based on characteristic waveform
  • Fault scenario simulation method for active distribution network based on characteristic waveform

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Embodiment Construction

[0029] In order to better illustrate the present invention, the present invention will be described in detail with a preferred embodiment and with accompanying drawings, specifically as follows:

[0030] Such as figure 1 As shown, the characteristic waveform-based active distribution network fault scenario simulation method provided by the present invention includes steps S101 to S107, specifically as follows:

[0031] Step S101: Establish a typical power distribution network fault model, and obtain the characteristic waveforms of various types of monitoring points through simulation;

[0032] The distribution network fault model classifies each monitoring point when a fault occurs. Among them, the power distribution network includes at least one fault point, using authoritative power simulation software such as DigSilent or RTDS, according to the parameters of typical power equipment, the connection relationship between switches, the connection relationship between switches ...

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Abstract

The present invention provides a fault scenario simulation method for an active distribution network based on a characteristic waveform. The method comprises the following steps: establishing a typical distribution network fault model to assort each monitoring site and obtain a characteristic waveform of each type of monitoring site by simulating; matching each monitoring site of a distribution network under test with category types in the distribution network fault model; disposing a tester in each monitoring site of the distribution network under test; for each monitoring site of the distribution network under test, predicting a fault waveform through calculation according to the characteristic waveform and an actual parameter thereof, and outputting the predicted fault waveform to the tester; setting a state sequence for each monitoring site; and after accurately setting time of the tester in each monitoring site, separately outputting the predicted fault waveform to a distribution terminal according to the state sequence to finish the simulation of the active distribution network. The simulation method is simple in modeling, effectively reduces the preparation time and testing fees of the simulation testing, and improves testing efficiency.

Description

technical field [0001] The invention relates to the technical field of fault simulation of active distribution networks, in particular to a method for simulating fault scenarios of active distribution networks based on characteristic waveforms. Background technique [0002] The penetration rate of distributed energy into the distribution network has increased year by year, which has changed the single-ended power supply mode of the original distribution network, resulting in significant changes in the power flow and short-circuit current distribution of the distribution network, affecting the relay protection and protection of the distribution network. Feeder automation, active distribution network, microgrid, etc. are all solutions to solve distributed energy access. However, there is still no effective solution for how to verify the fault handling capability of the automation system in the distribution network with distributed power generation on site, that is, the feeder ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCY02E60/00
Inventor 凌万水
Owner SHANGHAI WISCOM SUNEST ELECTRIC POWER TECH
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