Power grid partition scheduling device and partitioning method and system thereof

A technology of power grid partitioning and scheduling method, which is applied in the field of power grid to achieve strong adaptability and good overall effect.

Active Publication Date: 2014-03-26
POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 general power grid partition dispatching devices cannot accurately take dispatching measures when faults occur during real-time dispatching operations of the power grid. Measure grid partition dispatching device and its partition method and system

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  • Power grid partition scheduling device and partitioning method and system thereof
  • Power grid partition scheduling device and partitioning method and system thereof
  • Power grid partition scheduling device and partitioning method and system thereof

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Embodiment 1

[0088] like Image 6 As shown, the power grid system to be evaluated is divided into 39 potential zones after sensitivity calculation and analysis. When the power grid is in a growing state, the topology structure does not change and there is no N-1 problem, the power grid is not zoned, and each potential zone does not need to be stained and Boundaries are shown in dashed lines.

[0089] like Figure 7 As shown, when a tripping 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 Security 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 being dyed by the partition dyein...

Embodiment 2

[0091] like 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 trips), the data transmission module will compare the grid topology and real-time power flow at this time. The calculation results are communicated to the N-1 Safety Analysis Module. The N-1 safety analysis results show that there will be serious N-1 problems in the power grid at this time: except for the fault area, although some lines are not geographically connected to the fault area, they are electrically close together, such as potential area 21 and potential area 22. The power flow of the tie line between them increases greatly due to the failure; if another tie line between the substations 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. The dispatc...

Embodiment 3

[0093] like Figure 9 As shown, one of the two 500kV busbars in the 500kV substation G in the potential division 7 of the power grid system to be evaluated is in the maintenance state, and the station is wired in a 3 / 2 manner. One of the series of tie breakers tripped, causing the 500kV substation to split into 2 500kV nodes. The data transmission module transmits the grid topology structure and real-time power flow calculation results to the N-1 safety analysis module. The N-1 safety analysis results show that when a busbar split occurs in a 500kV substation, the power flow of the tie line between potential area 7 and adjacent potential areas 6 and 8 is very likely to exceed the limit. There is also a high possibility that the flow of the tie line between areas 6 and 11 will exceed the limit. The partition dyeing module divides the power grid into three areas: I, II, and III after calculation. The dispatcher needs to closely monitor and control the flow of key sections betw...

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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 partition scheduling device and a partition method and system thereof. Background technique [0002] Modern power systems continue to increase in size and complexity. In order to ensure the safe and stable operation of complex power systems and that dispatchers can take control measures in a timely and accurate manner after an accident, to avoid the occurrence of chain accidents, it is necessary to divide the power grid in the dispatching operation of the power system. The main purpose of power grid partition scheduling is to divide the power grid into different areas, freeing dispatchers from massive data, intuitively and efficiently knowing the current power grid operation status, and ensuring the safety and stability of power grid operation. [0003] The research on the existing power grid partition scheduling technology mainly focuses on div...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
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
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