AC/DC distribution network source-load optimal distribution control method under distributed new energy high permeability condition
A technology of distributed new energy and optimized distribution, applied in electrical components and other directions, can solve problems that require further in-depth research, and achieve the effect of solving source-load optimization problems, improving safety and power quality, and optimizing dynamic steady-state performance
Active Publication Date: 2016-05-11
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +2
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Problems solved by technology
[0008] In terms of AC distribution network, with the access of flexible equipment such as distribution static var compensator and dynamic voltage restorer, some new changes have taken place in the characteristics of distribution network. The operating characteristics of static var compensator, The impact of the system operation mode and characteristics of the dynamic voltage restorer on the AC distribution network needs to be further studied
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[0040] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0041] A control method for optimal distribution of AC and DC distribution network source and load under the condition of high penetration rate of distributed new energy, including: (1) system-level design of optimal distribution control method (2) decoupling active power and reactive power for distributed power (3) When the AC-DC distribution network with a large number of distributed new energy sources loses the support of the large power grid, realize a reasonable energy management algorithm to optimize the distribution of active power among various distributed power sources; (4) The active power control and adjustment strategy of distributed power supply realizes the frequency stability of the AC part of the AC-DC distribution network and the v...
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The invention discloses an AC / DC distribution network source-load optimal distribution control method under a distributed new energy high permeability condition. The method comprises the following steps: 1) determining an optimal distribution control system of distributed power sources; 2) carrying out active and reactive decoupling control on the distributed power sources; 3) carrying out active output optimal distribution between the various distributed power sources; 4) realizing frequency stabilization of an AC part and voltage stabilization of a DC part of an AC / DC distribution network according to an active control adjusting strategy of the distributed power sources; 5) carrying out reactive power optimization distribution between the various distributed power sources; 6) realizing voltage regulation of the AC part of the AC / DC distribution network according to a reactive control adjusting strategy of the distributed power sources; and 7) correcting the deviation with the reactive power of the AC part of the AC / DC distribution network. The method can optimize active output and reactive distribution of the voltage and load in the AC / DC distribution network, and thus safety of an electric system and power quality of the AC / DC distribution network are improved.
Description
technical field [0001] The invention relates to a control method for optimal distribution of source and load of an AC-DC distribution network under the condition of high penetration rate of distributed new energy, and belongs to the technical field of AC-DC power distribution. Background technique [0002] When the power transmission and distribution system was produced, DC was used as the most important power distribution method, but due to the low voltage level and small capacity of DC power transmission and distribution at that time, DC power distribution was replaced by AC power distribution. [0003] With the vigorous development of power electronics technology, both the power distribution system itself and the final power users are increasingly using DC power distribution or power consumption equipment. The traditional power distribution system has mainly adopted the AC power distribution mode for more than one hundred years, so these DC power distribution equipment ha...
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IPC IPC(8): H02J5/00
CPCH02J5/00
Inventor 柳丹袁晓冬徐青山李强陈兵吕振华杨雄
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST