Distribution network reliability evaluation method considering light storage continuous load carrying capacity

A load capacity, distribution network technology, applied in the direction of instruments, data processing applications, resources, etc., can solve the problem that the photovoltaic output cannot meet the load demand, etc.

Active Publication Date: 2017-08-25
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

Although there are many studies that take photovoltaic access into distribution network reliability assessment, many studies take hours as the sampling interval, and believe that the photovoltaic system meets the load demand at a certain moment when it is running in an island. It can meet the load demand, but in fact, due to the fluctuation of photovoltaics, the photovoltaic output cannot meet the load demand within this hour

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  • Distribution network reliability evaluation method considering light storage continuous load carrying capacity
  • Distribution network reliability evaluation method considering light storage continuous load carrying capacity
  • Distribution network reliability evaluation method considering light storage continuous load carrying capacity

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Embodiment Construction

[0088] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings and examples, but the implementation and protection of the present invention are not limited thereto.

[0089] In the embodiment of the present invention, a distribution network subsystem of IEEE RBTS-BUS6 is used as an example scenario. In order to take the load sequence characteristics into consideration, the load data are all based on the actual annual operating data of the distribution transformer. Table 3 shows the annual peak value of each load node The number of loads and users, the number of simulations is 10,000 times, and the rest of the parameters are shown in Table 1 and Table 2.

[0090] Table 1 Parameters of microgrid components

[0091] Numbering Installed capacity / MW Energy storage capacity / MW*h Maximum charging and discharging power / MW Photovoltaic system 3 ------ ------ Energy storage system --...

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Abstract

The invention provides a distribution network reliability evaluation method considering light storage continuous load carrying capacity. The method specifically includes the steps of firstly, conducting a clustering analysis on photovoltaic output historical data; then, establishing a photovoltaic output time sequence model under different weather types; and finally, simulating the operating state of a distribution network considering the light storage continuous load carrying capacity through a Monte Carlo method and obtaining a reliability index of the distribution network. The invention is innovative in three aspects: first, taking into account the impact of the time sequence of photovoltaic output on the reliability of the distribution network under the different weather types; second, obtaining an island dynamic division strategy after the failure of the distribution network by calculating the light storage continuous load carrying capacity under a constant confidence level; and third, proposing the distribution network reliability evaluation method considering island operating characteristics.

Description

technical field [0001] The invention relates to the technical field of distribution network reliability evaluation, in particular to a distribution network including photovoltaic power supply, and a distribution network reliability evaluation method that considers the continuous load capacity of photovoltaic storage. Background technique [0002] In recent years, the gradual depletion of fossil energy such as coal and oil has further deepened the energy crisis in the world, and the ecological environment crisis has also deepened day by day, which has prompted countries to vigorously promote the development of renewable and distributed energy. With the development of distributed power generation technology and the active support of policies, a large number of distributed power sources have begun to be connected to the distribution network in various forms. With the increase of penetration rate, the impact of distributed power generation on the operation of distribution network...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q50/06
Inventor 黄伟张勇军陈伯达陈家超
Owner SOUTH CHINA UNIV OF TECH
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