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Splitting control method of large-scale regional power grids

A technology of regional power grid and control method, applied in the field of decoupling control, can solve problems such as power grid evolution and oscillation, achieve high coordination and improve self-adaptive ability

Active Publication Date: 2013-10-02
STATE GRID CORP OF CHINA +2
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Problems solved by technology

However, this traditional method has the following inherent defects: if the out-of-synchronization center falls on a section that is set to operate after a long out-of-synchronization period, it will delay the decommissioning time of the out-of-synchronization fleet, and in some cases, may cause the power grid to evolve into a Oscillation among multi-group units

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  • Splitting control method of large-scale regional power grids

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Embodiment

[0016] Such as figure 1 As shown, a decoupling control method between large-scale regional power grids, the method is realized by setting decoupling terminal devices and control master stations in substations on both sides of the out-of-step section between large-scale regional power grids, including the following steps:

[0017] 1) The control master station collects the out-of-synchronization information of each transmission node in the power grid through the PMU;

[0018] 2) According to the out-of-synchronization information uploaded by the PMU, when the control master station judges that a certain section needs to be deloaded, it sends a deloading control command to the deloading terminal device in the substation of the section;

[0019] 3) The de-serialization terminal device receives the de-serialization control command and performs de-serialization, and at the same time, the de-serialization terminal device broadcasts the de-serialization locking command to other de-se...

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Abstract

The invention relates to a splitting control method of large-scale regional power grids. The splitting control method comprises steps as follows: (1) a control master station collects an out-of-step message of each transmission node in the power grids through a PMU (phasor measurement unit); (2) when the control master station judges that one section requires splitting according to the out-of-step message uploaded by the PMU, the control master station sends a splitting control command to a splitting terminal unit in a section substation; (3) the splitting terminal unit receives the splitting control command for splitting and simultaneously broadcasts a splitting locking command to other splitting terminal units located on the same electric transmission line passageway; and (4) after other splitting terminal units on the same electric transmission line passageway receive the splitting locking command, the splitting terminal units don't perform splitting no matter whether the splitting terminal units receive the splitting control command sent by the control master station. Compared with the prior art, the splitting control method has the advantages of good harmony, high self-adaptive ability and the like.

Description

technical field [0001] The invention relates to a decoupling control method, in particular to a decoupling control method among large-scale regional power grids. Background technique [0002] The traditional decoupling control system between large-scale regional power grids obtains the selectivity of the decoupling time of each section device through different out-of-synchronization period settings. However, this traditional method has the following inherent defects: if the out-of-synchronization center falls on a section that is set to operate after a long out-of-synchronization period, it will delay the decommissioning time of the out-of-synchronization fleet, and in some cases, may cause the power grid to evolve into a Oscillation among multi-group generators. Contents of the invention [0003] The object of the present invention is to provide a split control method between large-scale regional power grids in order to overcome the above-mentioned defects in the prior a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J13/00
CPCY02E40/70Y02E60/00Y04S10/00Y04S10/16Y04S10/22
Inventor 杨增辉冯煜尧崔勇黄磊郭强
Owner STATE GRID CORP OF CHINA
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