Online active splitting control method and system for electric power system

A technology of a power system and a control method, which is applied in the field of decoupling control, can solve the problem that the decoupling method of the power system cannot adapt to the needs of a new power grid, and achieves the effect of avoiding emergency shutdown and ensuring safety.

Pending Publication Date: 2019-09-24
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in order to solve the problem that the current power system decoupling

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  • Online active splitting control method and system for electric power system
  • Online active splitting control method and system for electric power system
  • Online active splitting control method and system for electric power system

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Embodiment Construction

[0067] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0068] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0069] Embodiment of control method

[0070] This embodiment provides an online active decoupling control method of the power system. The active decoupling starts from the overall situation of the power system, uses the wide-area measurement system and the high-speed communication system to monitor the system status in real time, and coordinates and makes decisions based on the fault information before the system collapses. , actively decompose the large system into several independent small systems, effectively preventing cascading failures. Active decoupling takes the real-time information of the power grid as the research object, and formulates decoup...

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Abstract

The invention relates to an online active splitting control method and system for an electric power system. The method comprises the steps of performing unit grouping prediction by combining neighborhood high-dimensional visualization and an M-mean root cluster polymerization method, then establishing a short-term power load prediction model combining an NRS theory and a global evolutionary optimization algorithm by taking island power balance constraints into consideration, and optimizing the load grouping; determining the number of split islands and initial search nodes through a dendrite deep learning algorithm by using the grouping results of units and loads on the basis; then solving the optimal splitting section by adopting a GA search algorithm so as to realize the quick solution of the whole network; and finally, optimizing and adjusting the output of a generator set of each island which does not meet the safety constraint so as to maintain the safe operation of each island. The invention realizes an online active splitting control algorithm, effectively solves a problem of cluster instability of a multi-machine system and ensures the stable operation of the islands.

Description

technical field [0001] The present application belongs to the technical field of decoupling control, and in particular relates to an online active decoupling control method and system of a power system. Background technique [0002] Although the interconnection of power grids facilitates the production and consumption of electric energy, it may also make various shocks and instability more likely to occur. The ideal power system is to be able to continuously supply power to the load at a constant frequency and voltage under any circumstances, but the power system cannot avoid disturbances from inside or outside the system during its operation. Disturbances such as load fluctuations, large disturbances such as short circuit, machine cut, load shedding, etc. The disturbance problem will directly affect the planning, design and production operation of power grid construction, and more importantly, it also poses a threat to the interconnected power grid. [0003] Due to the li...

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Application Information

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IPC IPC(8): H02J3/00H02J3/14H02J3/46
CPCH02J3/00H02J3/14H02J3/46H02J3/003H02J3/388Y04S20/222Y02B70/3225
Inventor 饶宇飞刘阳赵阳崔惟方舟高昆王骅李晓萌田春笋潘雪晴刘芳冰
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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