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Emergency control method for power system security and stability based on two-level remedial strategy

A safe and stable power system technology, applied in the direction of electrical components, circuit devices, etc., can solve the problems of not considering the sensitivity factor, not considering the control cost, etc., and achieve the effect of improving reliability

Active Publication Date: 2016-09-07
NANJING NARI GROUP CORP +5
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Problems solved by technology

[0005] In addition, regarding the control effect of the control measures, the existing control strategy table design only considers the sensitivity factor of the control measures in the emergency control of the power flow exceeding the limit of the component or the power flow of the transmission channel combined with multiple components. The sensitivity factor In fact, it is the power sensitivity of the control measures to the power flow of the components or the power flow of the transmission channel, but for other safety and stability issues, the sensitivity factor is not considered; Regarding the economy of the control measures, the existing control strategy table design adopts the priority of the control measures level, without considering the cost of control

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  • Emergency control method for power system security and stability based on two-level remedial strategy
  • Emergency control method for power system security and stability based on two-level remedial strategy
  • Emergency control method for power system security and stability based on two-level remedial strategy

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Embodiment Construction

[0029] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0030] The control strategy of the control station of the power system safety and stability control system in the present invention adopts a combination of component switching and stopping, component flow, expected failure, control measures and their safety and stability sensitivity comprehensive factors, priority of control measures, control cost calculation formulas and control measures. The control strategy table composed of the association constraints among them.

[0031] The component power flow refers to a single component power flow, a sum of multiple component power flows and combinations thereof. The safety and stability sensitivity comprehensive factor of the control measure refers to the response to various safety and stability problems of the power grid after the control measure is taken when the power flow of the component reaches the ...

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Abstract

The invention discloses an electric power system safety and stability emergency control method based on a two-stage remedial strategy, and belongs to the field of electric power system safety and stability control. A safety and stability sensitivity comprehensive factor and a control cost calculation formula of a control measure are added into the control strategy table designing to meet the requirement for safety and stability optimizing control. Under the condition that a control order is not actually executed, a control station selects an optimizing control measure from the control measure space of the control station in an iteration mode to carry out the remedy control in a precedence mode, and a last-level collaborative defense control station of the control station selects the optimizing control measure in the control measure space of the collaborative defense control station to carry out the remedy control; under the condition that the control station does not have the control measure, the last-level collaborative defense control station selects the optimizing control measure to implement the remedy control, and therefore the two-stage remedy control according to the non-implementation of the control order and the insufficient single-control station control measure is achieved. The reliability of the safety and stability emergency control can be effectively enhanced.

Description

technical field [0001] The invention belongs to the field of power system safety and stability control, and more precisely, the invention relates to a power system safety and stability emergency control method based on two-level remedial strategy. Background technique [0002] Safety and stability The emergency control system is the second line of defense of the power grid, and its reliability is self-evident. The existing safety and stability emergency control system is controlled according to the control strategy table. When the plant side control device of the safety and stability emergency control system detects that the component flow preset in the control strategy table appears in the power grid (including If the power flow of the transmission channel composed of multiple components) reaches the set range and / or the expected failure, it will be searched from the control strategy table based on the information such as the power grid component switching on and off, the o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00
Inventor 徐泰山王昊昊马明汪宁渤段慧刘强汪马翔周强
Owner NANJING NARI GROUP CORP
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