Load transfer method that integrates a multi-level transfer strategy
A load transfer, multi-level technology, applied in the field of power engineering, can solve the problems of failure to realize the multi-level linkage of the line-transformation frame, failure to fully tap the grid structure capacity and power supply capacity, etc., so as to restore the user's power supply. Effect
Active Publication Date: 2019-11-15
JIANGSU ELECTRIC POWER CO
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Problems solved by technology
In terms of the operation mode of the distribution network, the functions of the domestic distribution automation master station do not fully meet the actual control and operation needs, especially in the distribution network block when the power supply substation (or main transformer in the station, busbar) of the distribution network is out of power. The use of load transfer fails to realize the multi-level transfer strategy of multi-level grid linkage, fails to fully tap the grid structure capacity and power supply capacity, and fails to realize the multi-level linkage between lines and substation grids
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[0020] The present invention will be further described below in conjunction with specific drawings and embodiments.
[0021] The present invention proposes a load transfer method with a comprehensive multi-level transfer strategy. On the basis of considering the multi-level network structure, the main transfer strategy includes basic transfer, serial bus supply in the station, bus replacement, split transfer, two second generation;
[0022] Basic transfer: Obtain the target equipment to be transferred, obtain all reasonable transfer paths of the load under the target device to be transferred through topology search, and obtain the optimal transfer path after screening; the transfer path can include one or more Strip supply lines;
[0023] In-station busbar series supply: It is suitable for the case of a single main transformer in a substation losing power (overhaul or failure, etc.), and the priority is to transfer as much load as possible from the power-off main transformer ...
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The present invention provides a load transfer method that integrates a multi-level transfer strategy. The transfer strategy includes basic transfer, intra-station bus series supply, bus replacement supply, split replacement and secondary replacement. The method includes the following steps of (S1) considering a multi-level grid frame linkage of a power distribution network and establish a main transformer, bus and feeder integrated power supply relationship model, (S2) inputting data parameters including an operation mode, load data, operation constraints and a strategy priority, and (S3) inputting a target device to be transferred, performing various types of transfer strategies and load analysis and obtaining a transfer route and load situation analysis, (S4) outputting a transfer plan,wherein multiple transfer strategies are integrated to give an optimal load transfer plan, and (S5) generating an operation ticket from the generated load transfer plan according to requirements of the operation ticket. According to the method, the multi-level grid frame linkage can be considered, and the grid frame linkage ability and overall power supply ability of the power distribution network are fully dug.
Description
technical field [0001] The invention relates to the technical field of electric power engineering, in particular to a load transfer method integrating multi-level transfer strategies. Background technique [0002] After years of distribution network structure optimization and distribution automation construction, the level of distribution network automation has been greatly improved, but the level of intelligence still needs to be improved. In terms of the operation mode of the distribution network, the functions of the domestic distribution automation master station do not fully meet the actual control and operation needs, especially in the distribution network block when the power supply substation (or main transformer in the station, busbar) of the distribution network is out of power. The use of load transfer fails to realize the multi-level transfer strategy of multi-level grid linkage, fails to fully tap the grid structure capacity and power supply capacity, and fails ...
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Login to View More IPC IPC(8): H02J3/00H02J3/06
CPCH02J3/06
Inventor 周晓锋苏磊王昆林钧海周鑫
Owner JIANGSU ELECTRIC POWER CO