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Power grid partition dispatching device and its partition method and system

A power grid partitioning and power grid technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as taking dispatching measures, and achieve strong adaptability and good overall effect.

Active Publication Date: 2017-05-10
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a system that can respond to grid faults in real time and accurately take dispatching measures when faults occur during real-time grid dispatching operations, aiming at the problem that the general power grid partition dispatching device cannot accurately take dispatching measures when a fault occurs during the real-time dispatching operation of the power grid. Power grid partition dispatching device and its partition method and system

Method used

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  • Power grid partition dispatching device and its partition method and system
  • Power grid partition dispatching device and its partition method and system
  • Power grid partition dispatching device and its partition method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Such as Image 6 As shown, the power grid system to be evaluated is divided into 39 potential regions after sensitivity calculation and analysis. When the power grid is in a growing state, the topology structure has not changed and there is no N-1 problem. The power grid is not divided, and each potential region does not need to be colored and The border is shown as a dashed line.

[0086] Such as Figure 7 As shown, when a trip fault occurs in one of the double-circuit tie lines between 500kV substation A and 500kV substation B, the grid topology changes, and the data transmission module transmits the grid topology and real-time power flow calculation results to N -1 Safety analysis module. The N-1 safety analysis results show that there is an N-1 problem in the power grid at this time: if another tie line between AB also trips at this time, the tie line between potential area 26 and potential area 39 will have an overload problem. After dyeing by the district dyeing mod...

Embodiment 2

[0088] Such as Figure 8 As shown, when an important tie line in the power grid system to be evaluated fails (one of the double-circuit tie lines between 500kV substation E and 500kV substation F has a trip failure), the data transmission module will determine the current grid topology and real-time power flow The calculation results are communicated to the N-1 safety analysis module. The N-1 safety analysis results show that the power grid will have a serious N-1 problem at this time: except for the failure area, some lines are not geographically connected to the failure area, but the electrical distance is close, such as potential area 21 and potential area 22 The power flow between the tie lines has increased significantly due to the occurrence of a fault; if another tie line between the substation EF trips at the same time, a large-scale chain accident will occur in the power grid. The partition dyeing module divides the power grid into two areas I and II after calculation....

Embodiment 3

[0090] Such as Picture 9 As shown, one of the two 500kV busbars in the 500kV substation G in the potential partition 7 of the grid system to be evaluated is under maintenance, and the station is connected in a 3 / 2 manner. A tripping fault of a series connection circuit breaker causes the 500kV substation to split into Two 500kV nodes. The data transmission module transmits the grid topology and real-time power flow calculation results to the N-1 safety analysis module. The N-1 safety analysis results show that when a bus split occurs in a 500kV substation, the tie line flow between potential area 7 and adjacent potential areas 6 and 8 is likely to exceed the limit. At the same time, potential area 5 and adjacent potential There is also a high possibility that the tie-line flow between areas 6 and 11 will exceed the limit. The partition coloring module divides the power grid into three areas I, II, and III after calculation. Dispatchers need to closely monitor and control the...

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Abstract

The invention provides a power grid partition scheduling device which comprises a data output module, a sensitivity calculating module, N-1 safety analyzing modules, a partition dyeing module an a processing module. Accurate and real-time data acquisition of the data output module can guarantee real-time monitoring of power grid operation, dependence on the inherent the topology graph of a power grid can be avoided, and high adaptability can be achieved; two independent modules are used to perform power grid potential partitioning and N-1 safety analysis, so that data processing speed is guaranteed; faults in power grid operation scheduling can be responded to in real time, and accurate scheduling measures can be taken on the faults during power grid real-time scheduling operation.

Description

Technical field [0001] The present invention relates to the technical field of electric power grids, in particular to a power grid zone dispatching device and a zone method and system thereof. Background technique [0002] The scale and complexity of modern power systems continue to increase. In order to ensure the safety and stability of the complex power system operation and the dispatchers can take timely and accurate control measures after the accident, and avoid the occurrence of chain accidents, it is necessary to perform the divisional dispatch of the power grid in the dispatching operation of the power system. The main purpose of grid divisional dispatch is to free dispatchers from massive amounts of data by dividing the grid into different regions, to intuitively and efficiently learn the current grid operation status, and to ensure the safety and stability of grid operation. [0003] The research on the existing power grid divisional dispatching technology is mainly focu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/00
Inventor 李博喻振帆李普明占才亮孟子杰蔡新雷
Owner POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD