Alternating current-direct current hybrid flexible power distribution network reliability calculation method
A technology of AC/DC hybrid connection and calculation method, which is applied in the field of reliability calculation of AC/DC hybrid flexible distribution network, can solve the problems of energy conversion efficiency, reliability and flexibility that cannot be adapted, and achieves the effect of ensuring reliability
Active Publication Date: 2019-04-26
CEEC JIANGSU ELECTRIC POWER DESIGN INST +5
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Problems solved by technology
The traditional AC-based distribution network frame cannot adapt to the development of the new situation in terms of energy conversion efficiency, reliability and flexibility. It is urgent to study a new AC-DC hybrid distribution network power supply mode to adapt to high-reliability power supply areas. The development demand of future electric power
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[0072] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0073] see figure 1 , a method for calculating the reliability of an AC / DC hybrid flexible distribution network of the present invention, comprising the following steps:
[0074] Determine the starting point and end point of the reliability calculation path of the power distribution unit;
[0075] Divide distribution grid reliability modules: components that have a weak or consistent impact on reliability are divided into a basic module; key factors that affect reliability are divided into separate blocks;
[0076] Determine the single-line mode of the flexible direct current transmission system and the three-way parallel connection mode with flexible direct closing loops, and determine the load transfer method;
[0077] First, according to the wiring mode of the power distribution unit, the series sub-p...
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The invention discloses an alternating current-direct current hybrid flexible power distribution network reliability calculation method. The method comprises the following steps that a starting pointand an end point of a reliability calculation path of a distribution unit are determined; a power distribution network reliability module is divided, wherein components weak in influence on reliability or consistent influence result are divided into a basic module; key factors of the influence on the reliability are divided into a separate block; a single line mode of a flexible direct current transmission system and a three-way parallel connection mode including flexible and straight loops are determined, a load transfer method is determined; according to the connection mode of the distribution unit, a series sub-path and the minimum path set of each calculation load point are determined, and then the outage times and power supply availability of each load point are obtained through calculation; finally, the average index value of the load points is calculated to obtain the overall reliability index of the distribution unit. Accordingly, the reliability of the power distribution network can be greatly improved, and the method can adapt to development of future distributed power supply, energy storage and direct current load in a high reliability power supply area.
Description
technical field [0001] The invention belongs to the technical field of an AC / DC hybrid flexible distribution network, and in particular relates to a reliability calculation method for an AC / DC hybrid flexible distribution network suitable for a high-reliability power supply area. Background technique [0002] With the development of my country's national economy and the deepening of energy transformation and transformation, DC loads such as distributed power sources, energy storage and electric vehicle charging facilities in economically developed areas have mushroomed rapidly. The distribution network has changed from the traditional one-way feeding passive The network has gradually evolved into an active network with transaction, direct current, mixed supply, and multi-directional flows. The traditional AC-based distribution network frame cannot adapt to the development of the new situation in terms of energy conversion efficiency, reliability and flexibility. It is urgent ...
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IPC IPC(8): H02J3/36H02J3/46H02J3/14H02J3/28
CPCH02J3/14H02J3/28H02J3/36H02J3/46H02J2203/20Y02B70/3225Y02E60/60Y04S20/222
Inventor 苏麟吴在军王旭黄河李红军孙若萱袁简冯明灿窦晓波王沐凡闫安心蒋科晏阳姜华罗宇超王庭华周洪伟安增军李妍王球
Owner CEEC JIANGSU ELECTRIC POWER DESIGN INST
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