Solution to preventing power system from collapse in case of catastrophe

A power system and accident technology, applied in the field of power grid security, can solve problems such as space explosion of alternative strategies, unavoidable power system collapse accidents, etc.
CN1453919AInactive Publication Date: 2003-11-05TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2003-11-05
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

A policy-making method is composed of three stages of preprocessing and parameter being made as preliminary test for the primitive power network, narrowing search space to satisfy "generator synchronization" and "power balance" for off-the-line tactics collection based on OBDD olgorithm, inspecting "transmission line safety" restriction with quick trend calculation and giving out candidate resonable off-the-line tactics. By time division, the process can be carried out by computer with operation as stages according to long and short periodic off-line layer and then on-line layer.
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Description

technical field

[0001] The disconnection decision-making method for avoiding power system collapse under catastrophic accidents belongs to the technical field of power network security.

[0002] In a large-scale power system, severe local faults can lead to instability of the power system, such as out-of-synchronization (out-of-step) of generator sets, imbalance between power supply and demand, and deviation of power frequency and voltage from the rated range. The development of these phenomena may cause the expansion of accidents and even the collapse of the entire power grid, that is, a large-scale power supply interruption, resulting in serious economic losses. In this case, it is necessary to take effective emergency control measures in time to avoid the collapse of the power system. Disconnection is a control measure that can effectively avoid asynchronous operation or even collapse of the power system. The system works in a "quasi-normal" state, that is, the internal g...

Claims

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