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Multi-region load reduction collaborative decision-making method considering power grid risk levels

A technology of risk level and accident risk, applied in the direction of power network operating system integration, electrical components, circuit devices, etc., can solve problems such as power grid accident risk, achieve low risk, avoid hidden dangers in power grid safety, and reduce overall load.

Inactive Publication Date: 2017-10-20
ELECTRIC POWER SCHEDULING CONTROL CENT OF GUIZHOU POWER GRID CO LTD +2
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Problems solved by technology

[0004] The object of the present invention is: in order to solve the problem that the load reduction measures of each zone are considered independently in the existing emergency load reduction control measures, and the load reduction locations are too concentrated, which easily causes the risk of power grid accidents, and provides a multi-level emergency control system that takes into account the risk level of power grid accidents. The regional load reduction collaborative decision-making method can realize the collaborative optimization calculation of multi-regional load reduction means in the case of excessively high accident risk level due to power system load reduction, reduce the power grid accident risk level, and at the same time reduce the load loss as much as possible. To improve the safe and stable operation level of the power system

Method used

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  • Multi-region load reduction collaborative decision-making method considering power grid risk levels
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  • Multi-region load reduction collaborative decision-making method considering power grid risk levels

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Embodiment 1

[0035] An embodiment of the present invention, its steps are as figure 1 Shown:

[0036] figure 1 Step 1 in the above describes the offline strategy formulated for the typical grid mode, and the online verification of the strategy is performed based on the real-time operation mode of the grid. The offline strategy formulated for the typical grid mode mainly includes: the second line of defense security control load shedding strategy, the third Defense line low frequency low voltage load shedding strategy and precise load shedding control strategy.

[0037] figure 1 Step 2 in the above describes the statistics of the load loss of the power grid after the implementation of the offline strategy, specifically:

[0038] a) Calculate the load loss directly caused by the fault according to the fault component l t and corresponding load equipment;

[0039] b) Calculate the corresponding load loss according to the action of the safety control device l c1 and corresponding load eq...

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Abstract

The invention discloses a multi-region load reduction collaborative decision-making method considering power grid risk levels and belongs to the power system and power system automation technical field. According to the method of the invention, on-line verification is performed according to a power grid load reduction off-line strategy and on the basis of a power grid actual operation mode, the load reduction risk level of each of regions is evaluated for the load reduction quantity of the regions on the basis of the 599 order; and as for regions of which the accident risk levels do not satisfy requirements, the load reduction quantity of the regions is distributed on the basis of comprehensive consideration of factors such as load reduction sensitivity, load importance degree and load adjustment cost, so that the load reduction quantity of the regions of which the accident risk levels do not the satisfy requirements is distributed to regions with high priorities and low safety accident risks, and therefore, power safety accident risk levels can be decreased or avoided. With the method of the invention adopted, the engineering application of a large power grid in safety and stability analysis and risk assessment can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of electric power systems and automation thereof. Specifically, the invention relates to a multi-area load reduction collaborative decision-making method taking into account the risk level of power grid accidents. Background technique [0002] Emergency load shedding control is an important technical measure to deal with serious faults and emergencies of the power grid, and it is also one of the important technical means to ensure the safe and stable operation of large power grids. For emergency load shedding control measures, the power grid has realized the access and monitoring of various emergency load shedding control measures. However, the existing power grid emergency load shedding control strategy is mainly based on the typical off-line mode of the power grid through manual analysis and calculation, considering the fault form of the power system safety and stability guidelines. However, there is a lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/14
CPCH02J3/00H02J3/14H02J2203/20Y02B70/3225Y04S20/222
Inventor 康鹏张恒马覃峰刘强林成徐泰山孙斌
Owner ELECTRIC POWER SCHEDULING CONTROL CENT OF GUIZHOU POWER GRID CO LTD
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