Method for improving distributed power consumption by adjusting distribution network voltage based on SVC
A distributed power supply and voltage technology, which is applied in the direction of AC network voltage adjustment, single-network parallel feeding arrangement, flexible AC transmission system, etc., to achieve the effect of improving the energy consumption level and the distributed power supply consumption
Active Publication Date: 2019-12-20
ANSHAN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER COMPANY +3
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At present, there is no relevant method to study the improvement of distributed power consumption from the perspective of regulating the distribution network voltage.
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[0101] Taking the IEEE33 node distribution network as an example, the distributed power generation takes photovoltaic power generation and wind power generation as an example. A 1MW distributed photovoltaic power generation is connected to 5 nodes, and a 1MW distributed wind power generation is connected to 2 nodes. A 0.6MW distributed wind power generation is connected to node 20, a 0.5MW distributed wind power generation is connected to node 33, and reactive power compensation devices SVC are connected to nodes 18 and 33. Among them, the load at node 12 is a dynamic load, and the load at node 33 is a constant impedance load. The system reference power is 10MVA, the reference voltage is 12.66kV, and the total load is 3720kW+j2300kvar. The network topology is as figure 1 shown.
[0102] figure 2 Schematic diagram for adjusting the SVC firing angle voltage change. It can be seen from the figure that when the SVC is not connected to the distribution network, the voltage value...
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The invention relates to a method for improving distributed power consumption by adjusting distribution network voltage based on SVC, and belongs to the technical field of distributed power consumption. The method for improving the distributed power consumption by adjusting the distribution network voltage based on SVC is economical, efficient and good in adaptability and has higher practical value. A model including a constant impedance load and a wind-solar distributed power supply is established, a SVC control adjustment strategy is formulated based on the voltage-active sensitivity theoryand the following main conclusions are obtained: constant impedance load operating under the SVC control strategy can better consume abandoned wind and optical power, thus achieving the purpose of improving the distributed power consumption; meanwhile, the SVC compensation capacity is adjusted so as to improve the distribution network voltage distribution and reduce the network loss.
Description
technical field [0001] The invention belongs to the technical field of distributed power consumption, and in particular relates to a method for adjusting distribution network voltage based on a static var compensator SVC to improve distributed power consumption. Background technique [0002] With the increasing proportion of renewable new energy in the global energy structure and the large-scale development of grid-connected distributed power generation, the "bottleneck" problem of power grid consumption caused by the phenomenon of abandoning wind and solar power has become an urgent problem to be solved. It has become an urgent issue to improve the consumption of distributed power under the standard requirements of cost and high efficiency. Distribution network voltage regulation is one of the effective means to improve the consumption of distributed power, and it is of great significance to analyze and study its impact on the consumption of distributed power. [0003] At ...
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IPC IPC(8): H02J3/16H02J3/38
CPCH02J3/16Y02E40/10Y02E40/30
Inventor 夏岩峰鹿丽晏云桥郝睿鹿军
Owner ANSHAN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER COMPANY