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A voltage regulating moment-based main transformer high-voltage side bus voltage overrun processing method

A bus voltage over-limit and voltage regulation technology is applied to circuit devices, AC network circuits, and AC networks with the same frequency from different sources. Narrowing down the effect

Active Publication Date: 2018-12-28
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD QUZHOU POWER SUPPLY CO +2
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Problems solved by technology

[0003] In order to solve the problem that the current global voltage optimization method of the whole network has a large number of adjustment variables, the present invention proposes a method based on the voltage adjustment torque to deal with the bus voltage on the high voltage side of the main transformer exceeding the limit

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  • A voltage regulating moment-based main transformer high-voltage side bus voltage overrun processing method
  • A voltage regulating moment-based main transformer high-voltage side bus voltage overrun processing method
  • A voltage regulating moment-based main transformer high-voltage side bus voltage overrun processing method

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Embodiment Construction

[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0047]The invention firstly defines the concept of regulating moment, and comprehensively analyzes the regulating moment, regulating time and regulating cost of each regulating node, and forms regulating functions corresponding to each regulating node corresponding to the over-limit node of the main transformer high-voltage side bus bar. By sorting the regulation function values ​​of each regulation node and screening from many regulation strategies, a candidate set of regulation strategies suitable for the main transformer high-voltage side voltage exceeding the limit is obtained. Make adjustments. The detailed steps are as follows:

[0048] S1, establish the node-branch model of the provincial power grid and determine the electrical parameters of the lines and equipment;

[0049] In order to simplify the problem, the network with ...

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Abstract

The invention discloses a voltage regulating moment-based main transformer high-voltage side bus voltage overrun processing method. Firstly, the invention defines the concept of regulating moment, andsynthetically analyzes the regulating moment, regulating time and regulating cost of each regulating node to form the regulating function of each regulating node corresponding to the high-voltage side bus overrun node of the main transformer. By sorting the regulating function values of each regulating node and screening from many regulating strategies, the candidate set of regulating strategy suitable for high voltage side voltage overrun of main transformer is obtained. Finally, according to the candidate strategy, the voltage of the node overrun is regulated by reactive power optimizationmodel. The invention reduces the range of the selection of the adjustment variable and simplifies the adjustment procedure by utilizing the adjustment strategy candidate set. The method of the invention has the advantages of fast execution speed and saving computational memory.

Description

technical field [0001] The invention relates to the field of reactive voltage regulation of a land-saving power grid, and more specifically, to a method for processing the voltage of a main transformer high-voltage side bus voltage exceeding a limit based on a voltage regulation torque. Background technique [0002] In the current coordinated control process of provincial and local power grids, due to the uncertainty of power supply and load, it is easy to cause voltage over-limit problems on the high-voltage side of the 220kV main transformer. At present, the common processing method is the global voltage optimization method based on the whole network, and the calculation method of sensitivity is used to calculate the influence of various adjustment measures of the whole network on the off-limit nodes. However, the global voltage optimization method based on the whole network has a large number of adjustment variables, which is easy to cause a series of problems such as com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06
CPCH02J3/06H02J2203/20
Inventor 石博隆周生苗叶琳吴昌李震杨滢周正阳孙维真毛以军任娴婷鲍威史立勤韩立恺
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD QUZHOU POWER SUPPLY CO
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