Safety scheduling method for flexible transformer area

A dispatching method and station area technology, applied in the field of electric power, can solve the problems of reduced security of flexible station areas, etc.

Active Publication Date: 2021-03-12
JIANGSU ELECTRIC POWER CO +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] When the flexible station area fails or is overloaded, the distribution transformer is overloaded, or the converter is overloaded, and the safety of the flexible station area is greatly reduced.

Method used

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  • Safety scheduling method for flexible transformer area
  • Safety scheduling method for flexible transformer area
  • Safety scheduling method for flexible transformer area

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Embodiment Construction

[0015] In order to make the content of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, for the sake of clarity, representation and description of components that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions.

[0016] The present invention proposes a security scheduling method for a flexible station area, which obtains security control plans for different devices inside the flexible station area based on single-section scheduling of typical scenarios. Such as figure 1 As shown, it specifically includes the following steps:

[0017] S1. Determine the safety scheduling objective function based on equipment operating cost and load shedding cost, so as to ensure that the flexible station area works in an economically optimal state in an...

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Abstract

A safety scheduling method of a flexible transformer area obtains safety control plans of different devices in the flexible transformer area based on single-section scheduling of a typical scene, andcomprises the following steps: S1, determining a safety scheduling objective function which mainly comprises device operation cost and load shedding cost, thereby ensuring that the flexible transformer area works in an economic optimal state in an emergency state; S2, constructing power models of a transformer and a converter in the transformer area; S3, setting operation constraint conditions ofthe flexible transformer area based on the power model; S4, inputting equipment conditions and load scale parameters of the flexible transformer area; S5, solving a safety scheduling result, and obtaining the day-ahead power plan of the transformer and the converter in the transformer area and the operation cost of the flexible transformer area. According to the method, through flexible power distribution of the converter, safe scheduling of the flexible transformer area in an emergency state is completed, and safe and stable operation of the flexible transformer area is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of electric power, and relates to a method for safely dispatching a flexible station area. Background technique [0002] With the development of power electronics technology and the wide application of converters, the low-voltage side of the distribution station can be connected to DC through the converter to form a "flexible station". Inside the flexible station area, the DC bus can be connected to a large-scale DC fast charging load through the DC / DC converter, and the power is transmitted and distributed to each station area through the converter. [0003] When the flexible station area fails or is overloaded, the distribution transformer is overloaded or the converter is overloaded, and the safety of the flexible station area is greatly reduced. In an emergency state, it is necessary to take dispatching measures. Through the flexible power adjustment of the converter and the rapid removal of part of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46
CPCH02J3/46H02J2203/20Y02E60/60
Inventor 沈培锋刘国峰王勇王宁丰王子成孙国强徐广开
Owner JIANGSU ELECTRIC POWER CO
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