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(N-1) verification method of power grid comprising new energy

A verification method and new energy technology, applied in the field of electric power grid, can solve the problems of increasing computing workload, reducing computing speed, and large computing workload, and achieving the effect of reducing computing workload and improving computing speed.

Active Publication Date: 2018-03-23
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Performing N-1 verification requires N times of disconnection analysis on the power grid network. For the actual power grid system, the calculation workload is very large, especially after considering new energy, the power generation scenarios will continue to increase, further increasing the calculation workload and reducing calculation speed

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  • (N-1) verification method of power grid comprising new energy
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  • (N-1) verification method of power grid comprising new energy

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Embodiment Construction

[0019] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0020] See figure 1 and figure 2 , an embodiment of the present invention provides an N-1 verification method for a power grid containing new energy sources, and the N-1 verification method includes the following steps:

[0021] S1: Establish new energy power generation scenarios.

[0022] In step S1, a typical power generation scenario N ca...

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Abstract

The present invention provides a (N-1) verification method of a power grid comprising new energy, and relates to the field of electric power grid technology. The (N-1) verification method can reduce the computation workload of (N-1) verification of power grid comprising new energy and can improve the computation speed. The method comprises the steps of: establishing new-energy generation scenes; establishing one power grid line safety sensitivity scalar function PI for each new-energy generation scene; calculating one PI value of each line, and performing sorting of the lines according to a sequence of the PI values in descending order; and disconnecting a single line according to the sequence, and performing calculation of load shedding amount after disconnection until disconnection of acertain line cannot cause load shedding or until disconnection of M continuous lines cannot cause load shedding. The method provided by the invention is applied to (N-1) verification of power grid lines.

Description

technical field [0001] The invention relates to the technical field of power grids, in particular to an N-1 verification method for a grid containing new energy. Background technique [0002] The power industry is an important industry that consumes fossil energy in my country, and its CO 2 Emissions have accounted for 38.76% of the country's total emissions, and the development of the power industry will face enormous pressure from cleanliness, high efficiency, and low carbonization. Under the new development model, clean and low-carbon new power sources such as wind power and photovoltaics will have a broader development space, and how to maximize the utilization of new energy will be a key technology for realizing the low-carbonization of the power industry. [0003] At present, the large-scale grid-connection of wind power, photovoltaic and other new energy sources, the randomness, intermittency and volatility of the power generation output, bring huge challenges to the...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/38
CPCH02J3/00H02J3/382H02J2203/20
Inventor 卢斯煜周保荣姚文峰王彤李琳玮赵文猛王滔
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD