Distribution network planning method containing distributed power supply based on decomposition and coordination
A technology for distributed power supply and distribution network planning. It is used in instruments, data processing applications, forecasting, etc. It can solve the problems of distributed power supply uncertainty, only considering economy and reliability, and distribution network planning impact. , to achieve the effect of simplifying planning, improving calculation efficiency, and simplifying calculation
Pending Publication Date: 2017-11-24
HOHAI UNIV
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Problems solved by technology
However, due to the uncertainty and randomness of distributed power generation, it has an important impact on distribution network planning.
In traditional distribution network planning, in most cases, only economy and reliability are considered
Method used
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Embodiment 1
[0067] Select IEEE's 29-node distribution network as an example. The voltage level of this planning area is 10kV. The coordinates of each load point, the mathematical expectation of active and reactive power and the magnitude of importance are given. Among them, the substation node is node 1. The shape factor k=2.30 and the scale factor c=8.92 under the Weibull distribution, and the shape factors α=0.85 and β=0.85 under the beta distribution. The operation and maintenance costs of distributed wind power generators and photovoltaic generators are 0.3 yuan / kWh and 0.2 yuan / kWh respectively. The maximum load loss number is 2000h.
[0068] Five different situations were selected for comparison, that is, the distribution network planning was carried out without considering the wind-solar correlation coefficient, the wind-solar correlation coefficient was -0.7, the wind-solar correlation coefficient was -0.4, the wind-solar correlation coefficient was 0.4, and the wind-solar corr...
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The invention discloses a distribution network planning method containing a distributed power supply based on decomposition and coordination. In the distribution network planning, in order to avoid a dimensional disaster and reduce the difficulty of solution, a decomposition coordination joint planning method is provided. According to the method, with an overall planning target of minimal social total cost, the distribution network planning containing a distributed power supply is decomposed into two sub problems to plan separately, a lower layer is the optimization configuration of the distributed power supply with minimal DG annual comprehensive cost as a target function, and an upper layer is the optimization configuration of a wire frame with a minimal sum of total investment of a line, network loss cost, maintenance cost and depreciation cost as a target function, and the interactive iteration is carried out. Through the decomposition and coordination planning, the difficulty of calculation is reduced, the calculation is simplified, and the convergence and efficiency are improved.
Description
technical field [0001] The invention belongs to the field of new energy sources in electric power systems, and relates to a distribution network planning method including distributed power sources based on decomposition and coordination. Background technique [0002] With the aggravation of energy problems, distributed power grid connection is favored by everyone. However, due to the characteristics of uncertainty and randomness of distributed power generation, it has an important impact on distribution network planning. In traditional distribution network planning, only economy and reliability are considered in most cases. The distribution network with distributed generation also needs to consider the uncertainty of distributed generation, so it is of great significance to study the planning of distribution network with distributed generation. [0003] Therefore, a new distribution network planning method with distributed generation based on decomposition and coordination...
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IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 史林军赵晨宇王丹娜吴峰法拉第尔魏薇朱城澍
Owner HOHAI UNIV