AC-DC parallel power transmission channel power optimization distribution method and system

A power transmission channel, power optimization technology, applied in the direction of system integration technology, information technology support system, instrument, etc.

Inactive Publication Date: 2015-09-16
SOUTH CHINA UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0007] In view of this, it is necessary to provide an AC/DC parallel transmission channel power o

Method used

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  • AC-DC parallel power transmission channel power optimization distribution method and system
  • AC-DC parallel power transmission channel power optimization distribution method and system
  • AC-DC parallel power transmission channel power optimization distribution method and system

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Embodiment Construction

[0066] At present, the power optimal allocation plan of AC-DC parallel transmission channels between provincial grids is formulated by the network-level dispatching control center of the entire regional power grid. The day-ahead transmission power plan of each DC channel and AC channel under the premise of the transmission power security constraints of the AC connection sections between provinces is not enough for economical considerations. Or use the DC power flow model to calculate the transmission power of each inter-provincial AC link line based on the power of each generator, load power and DC line power, and perform safety checks on the AC link sections between provinces. The disadvantages of the above-mentioned technologies are: the preparation of the transmission power plan of the AC and DC channels between the provincial grids based on the operating experience does not take economic considerations into account. However, the DC power flow model is used to represent the...

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Abstract

The invention relates to an AC-DC parallel power transmission channel power optimization distribution method and an AC-DC parallel power transmission channel power optimization distribution system. The method comprises, firstly, obtaining a total exchange power plan between various provincial networks and recent output plans of various generator sets, obtaining recent transmission power plans of DC interconnection lines of various provinces then according to a preset AC-DC parallel power transmission channel power optimization distribution model, and, finally, issuing the recent transmission power plans of the DC interconnection lines of the various provinces to corresponding convertor stations to be executed. Compared with the prior art, the method can effectively reduce active power loss of AC-DC parallel power transmission channels between the whole province network; and a transmission power safety constraint of sections of AC interconnection lines between the various provinces can also be accurately satisfied.

Description

technical field [0001] The invention relates to the technical field of alternating current and direct current parallel transmission between provincial power grids, in particular to a method and system for optimizing power distribution of alternating current and direct current parallel transmission channels. Background technique [0002] Due to the uneven distribution of energy and load, long-distance, large-capacity, EHV / UHV AC / DC transmission has become the development trend of my country's power grid. Regional power grids such as Southern Power Grid and East China Power Grid have formed a large-scale AC-DC interconnected grid pattern. The "West-to-East Power Transmission" channel of China Southern Power Grid covers five southern provinces (regions), starting from Yunnan and Guizhou, passing through the entire territory of Guangxi, and reaching Guangdong. , plays an important role in the optimization and rational allocation of power resources in the five southern provinces ...

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06
CPCY02E40/70Y04S10/50
Inventor 林舜江陆文甜刘明波谢敏朱建全
Owner SOUTH CHINA UNIV OF TECH
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