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Accessibility analysis method under uncertain disturbance of alternating-current and direct-current hybrid power distribution system

A technology for AC/DC hybrid and power distribution systems, which is applied in AC network circuits, power transmission AC networks, electrical components, etc. It can solve the problem of difficulty in accurately describing the impact of renewable energy uncertainty on the system, and achieve fast calculation speed. , Guarantee the effect of stable control and high reliability of the system

Active Publication Date: 2021-11-12
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In order to solve the above problems, an accessibility analysis method for AC / DC hybrid power distribution system under uncertain disturbance is proposed, which can obtain the safe operation boundary of the system through a limited amount of calculation, and solve the problem of the uncertainty of renewable energy on the system. Affects problems that are difficult to accurately describe, fills the gaps in related technologies, and has broad application prospects

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  • Accessibility analysis method under uncertain disturbance of alternating-current and direct-current hybrid power distribution system
  • Accessibility analysis method under uncertain disturbance of alternating-current and direct-current hybrid power distribution system
  • Accessibility analysis method under uncertain disturbance of alternating-current and direct-current hybrid power distribution system

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Embodiment Construction

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, 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 making creative efforts belong to the protection scope of the present invention.

[0020] Reachability analysis is a formal analysis (Formal Analysis), which is an analysis method based on the state space model. The reachability analysis can calculate the set of all trajectories starting from the initial state set at one time, and can include all the trajectories of the system. likely to pass through the area. Compared with the simulation method, the accessibility analysis has the advantages of less calculation times, less calcul...

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Abstract

The invention relates to an accessibility analysis method under uncertain disturbance of an alternating-current and direct-current hybrid power distribution system. The method comprises the following steps: step 1, modeling the alternating-current and direct-current hybrid power distribution system; step 2, carrying out uncertain disturbance modeling on the alternating-current and direct-current hybrid power distribution system; and step 3, carrying out accessibility analysis under the uncertain disturbance of the alternating-current and direct-current hybrid power distribution system. According to the accessibility analysis method under the uncertain disturbance of the alternating-current and direct-current hybrid power distribution system, all possible passing areas of a track starting from an initial state set can be obtained only through one-time calculation, so a calculation speed is high, and reliability is high; and the method is a practical method for guaranteeing stable control of the system.

Description

technical field [0001] The invention relates to the field of electric power, in particular to an accessibility analysis method for an AC / DC hybrid power distribution system under uncertain disturbances. Background technique [0002] As the penetration rate of distributed power sources dominated by renewable energy in the power grid continues to increase, and the DC load represented by electric vehicles and computing centers continues to increase, the traditional AC distribution network has gradually become difficult to meet the new requirements of the modern power grid. needs and new trends. The AC-DC distribution network built on Multi-Terminal DC (MTDC) can fully absorb and utilize new energy based on the power electronic interface. The introduction of AC and DC distribution networks can realize power support and complementarity, improve energy utilization efficiency, and improve system flexible control capabilities. [0003] Due to its chemical characteristics of high c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/36
CPCH02J3/36H02J2003/365H02J2203/20Y02E60/60
Inventor 邓卫丁立裴玮庄莹叶华孔力
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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