Computing method for distributed power maximum access capacity in flexible power distribution network based on SNOP

A technology of distributed power supply and access capacity, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve problems that have not been obtained from the perspective of planning, and achieve the optimal operation mode, economic capacity, and access capacity improvement Effect

Active Publication Date: 2017-09-22
STATE GRID TIANJIN ELECTRIC POWER +1
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Problems solved by technology

However, the optimal location and capacity combination of DG and SNOP have not been obtained from the planning point of view when the DG access capacity in FDN is the largest.

Method used

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  • Computing method for distributed power maximum access capacity in flexible power distribution network based on SNOP
  • Computing method for distributed power maximum access capacity in flexible power distribution network based on SNOP
  • Computing method for distributed power maximum access capacity in flexible power distribution network based on SNOP

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Embodiment Construction

[0057] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0058] The present invention takes the IEEE33 node power distribution system as an example to analyze, see the attached image 3 .

[0059] image 3 Among them, TS1-TS5 are 5 contact switches, all of which are disconnected. The reference voltage at the head end of the network is 12.66kV, and the rated capacity of the feeder is 5.28MW. The basic load of the network is 3715+2290kVA, which is the minimum load that the network must meet. Refer to "Power Quality Supply Voltage Allowable Deviation" (GB12325-90), set the allowable voltage deviation value to -7%~+7%, that is, the network safety voltage per unit value is 0.93~1.07. According to the State Grid Corporation of China's distribution network pl...

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Abstract

The invention relates to a computing method for distributed power maximum access capacity in a flexible power distribution network based on SNOP. The computing method comprises the following steps: establishing a DG extremity access capacity model, using a network tide, feeder capacity and node voltage, distributed power single-point maximum access capacity and SNOP power as constraint conditions, selecting DG access capacity in maximum FDN as an optimal object, and adopting various population genetic algorithms to solve the model. According to the computing method, the distributed power maximum access capacity at an appointed position can be computed, and the optimal distributed power access position and capacity combination in the whole network can also be obtained in a planning angle.

Description

technical field [0001] The invention belongs to the field of intelligent power distribution, and relates to a method for calculating the maximum admittance capacity of a distributed power supply in a distribution network, in particular to a calculation method for the maximum admittance capacity of a distributed power supply in a flexible distribution network based on SNOP. Background technique [0002] With the continuous decline in the production price per kilowatt of electricity and the strong support at the policy level, distributed generation technology is being more and more widely used. The grid-connected power generation of various distributed generation (DG) poses new challenges to the safe and stable operation of the power system. When the distributed power capacity in the medium and low voltage distribution network reaches a relatively high proportion (that is, high penetration rate), there is a big problem in order to realize the power balance and safe operation o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 梁海深李明徐健史成广李维牛荣杰周建伟李云秀
Owner STATE GRID TIANJIN ELECTRIC POWER
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