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Digital real-time simulation platform suitable for automatic fault indicator detection

A digital real-time simulation and fault indicator technology, which is applied in the direction of instruments, measuring devices, and measuring electrical variables, can solve the problems of heavy line management and maintenance workload, economic loss, and many branches of distribution network lines, and achieve automatic detection Experiment, improve work efficiency, cost-effective effect

Pending Publication Date: 2017-09-29
XUCHANG KETOP DETECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for a long time, the distribution network has a large scale and a weak foundation. The management of the existing distribution network mainly relies on manpower to maintain lines and find faults. Moreover, there are many branches in the distribution network lines, the operation mode is complicated, and the management and maintenance workload of the lines is heavy. It is time-consuming and labor-intensive to search for faults, and the reliability of power supply is low
[0003] At present, fault indicators are mostly used to detect lines, but there are many deficiencies in the installed fault indicators, mainly the problem of false alarms and missed alarms, which reduces the efficiency of line inspection work and causes a lot of direct and indirect economic losses. loss

Method used

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  • Digital real-time simulation platform suitable for automatic fault indicator detection
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 1-2 As shown, a digital real-time simulation platform suitable for automatic detection of fault indicators is provided with:

[0035] In the simulation background, the operation selection of the detection item list is performed.

[0036] The simulation background mainly carries out the modeling of the distribution network system, the operation of the automatic test software and the analysis of the simulation waveform.

[0037] The item list can be divided into general function test list, ground fault test list, power frequency current impact test list and externally applied signal test list.

[0038] The routine function test list includes the same short-circuit fault test, ground fault zero-sequence current simulation test, line sudden load inrush test, non-fault phase reclosing inrush test, manual switching heavy load test, etc.

[0039] The ground fault test list includes the ground fault test of the neutral point ungrounded system, the ground fault...

Embodiment 2

[0070] A digital real-time simulation platform suitable for automatic detection of fault indicators, other features are the same as in Embodiment 1, the difference is that: such as figure 1 As shown, the current power amplifier is provided with 3 sets of current interfaces, the IA interface of the current power amplifier is connected to one end of the current raising device A, the N interface of the current power amplifier is connected to the other end of the current raising device A, and the current raising device A is equipped with a first Indicators, the first indicator is connected to the UA pin of the high voltage generator through the voltage probe A, the Ua pin of the high voltage generator is connected to the ua pin of the voltage power amplifier, and the N pins of the high voltage generator and the voltage power amplifier are both grounded.

[0071] The IB interface of the current power amplifier is connected to one end of the current booster B, and the other end of th...

Embodiment 3

[0075] A digital real-time simulation platform suitable for automatic detection of fault indicators, other features are the same as in Embodiment 1, the difference is that: such as figure 2 As shown, there are 3 overhead lines, namely:

[0076] The feeder branch of the first overhead line, the total length of the overhead line is L 1 , a circuit breaker Brk3 is provided, the A terminal of the circuit breaker Brk3 is connected to the voltage transformer PT, the B terminal of the circuit breaker Brk3 is connected to the current transformer CT3, and the current transformer CT3 is connected to the load through an overhead line.

[0077] The second overhead line feeder branch, the total length of the overhead line is L 2 , a circuit breaker Brk4 is provided, the A terminal of the circuit breaker Brk4 is connected to the voltage transformer PT, the B terminal of the circuit breaker Brk4 is connected to the current transformer CT4, and the current transformer CT4 is connected to th...

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PUM

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Abstract

The invention discloses a digital real-time simulation platform suitable for automatic fault indicator detection, which comprises a simulation backstage, a power system digital real-time simulator, a power simulation platform and a switch, wherein the simulation backstage performs operation selection of a detection item list; the power system digital real-time simulator receives an operation instruction of the item list, and a detection item is simulated through a simulation model; the power simulation platform amplifies simulation current and voltage data outputted by the power system digital real-time simulator through a current power amplifier and a voltage power amplifier respectively, and the current and the voltage after being amplified are loaded to a current rising device and a voltage rising device inside the power simulation platform, and according to the fault indicator arranged in the current rising device, fault display is carried out; and the switch realizes data transmission between the simulation backstage and the power system digital real-time simulator. Different grounding operation modes of a center point can be simulated, an externally-applied signal generator can be simulated, and the performance detection on the externally-applied signal distribution line fault indicator can be realized.

Description

technical field [0001] The invention relates to the technical field of fault indicator detection, in particular to a digital real-time simulation platform suitable for automatic detection of fault indicators. Background technique [0002] With the increasing pace of construction and transformation of domestic urban and rural power grids, the scale of distribution networks has continued to develop, the coverage of medium-voltage distribution networks has also continued to expand, and the number of overhead lines and cable lines has also increased sharply. As the National Development and Reform Commission and the Energy Bureau pay more and more attention to the construction of distribution network automation, higher requirements are put forward for the reliability of distribution network power supply and distribution network management. However, for a long time, the distribution network has a large scale and a weak foundation. The management of the existing distribution networ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
CPCG01R35/00
Inventor 王伟张彦兵李志勇周鹏鹏庄良文傅润炜胡卫东贾德峰
Owner XUCHANG KETOP DETECTION TECH CO LTD