Method for evaluating influences, on reliability of composite generation and transmission system, of main wiring of substation
A technology for power generation and transmission systems and substations, applied in the field of power transmission and power generation systems, can solve problems such as unresearched and in-depth development of methods affecting reliability, and achieve the effect of ensuring power supply and ensuring safety and reliability.
Inactive Publication Date: 2017-02-08
STATE GRID TIANJIN ELECTRIC POWER +1
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Problems solved by technology
[0005] However, at present, the research on the reliability of the power generation and transmission system mainly focuses on the adequacy of the power generation and transmission system, and the research on the reliability of the main wiring of the substation has also been gradually carried out, but the research on the correlation between the safety of the substation and the reliability of the power generation and transmission system still needs to be further developed. , the method for evaluating the impact of substation main wiring on the reliability of power generation and transmission systems has not yet been studied
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[0031] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:
[0032] The present invention converts the influence of the main wiring of the substation on the power generation and transmission system into the correction of the component parameters of the power generation and transmission system, that is, adopts the analytical enumeration method to enumerate the combination of the third-order and below fault states of the internal components of the substation, and counts the failure state combinations of the main wiring generator set or in and out Line failure probability, and then correct it to the failure probability of the corresponding components of the power generation and transmission system. Finally, Monte Carlo simulation is performed on all components of the modified power generation and transmission system to more accurately evaluate the reliability of the power generation and transmission system.
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The invention relates to a method for evaluating influences, on a reliability of composite generation and transmission system, of main wiring of a substation. The technical feature is that the method comprises the following steps of: 1, inputting parameters of the composite generation and transmission system and the substation and corresponding relationship data of the composite generation and transmission system and the substation; 2, setting a maximum sampling frequency to serve as judging basis of sampling end, so as to sample substation elements; 3, enumerating substation element fault states of third order and the below; 4, correcting fault probabilities onto reliability parameters of a generator or transmission line of the corresponding composite generation and transmission system; 5, carrying out network topology correction, connectivity judgement and state estimation on various fault states of the composite generation and transmission system; 6, judging whether a sample frequency is greater than the maximum sampling frequency or not; and 7, carrying out statistic on a reliability index of the composite generation and transmission system. According to the method provided by the invention, the influences, on the reliability of the composite generation and transmission system, of the main wiring of the substation can be rapidly and correctly estimated, and safe and reliable power supply is ensured.
Description
technical field [0001] The invention belongs to the technical field of power transmission and transmission systems, in particular to a method for evaluating the influence of substation main wiring on the reliability of power transmission and transmission systems. Background technique [0002] Power system reliability is a measure of the power system's ability to supply power and energy to power users uninterruptedly according to acceptable quality standards and required quantities. It is a science that guides power system planning, operation, construction and management. Ensuring a safe and reliable power supply is critical. The collapse of the power grid and large-scale power outages will not only cause huge economic losses and affect the normal life of the people, but also endanger public safety and cause serious social impacts. [0003] In recent years, the frequent occurrence of blackouts around the world has made people more aware of the importance of power system reli...
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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 赵玉新陈培育杜明胡晓辉刘亚丽姜宁袁中琛王瑶
Owner STATE GRID TIANJIN ELECTRIC POWER
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