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Novel rural power distribution network planning strategy based on robust optimization

A distribution network planning and robust optimization technology, applied in photovoltaic power generation, AC network load balancing, single-network parallel feeding arrangement, etc., can solve the problem of reducing the conservatism of planning decision-making, unconsidered load and distributed generation uncertainty Solve problems such as electrical problems, and achieve the effect of alleviating the problems of photovoltaic consumption and line loss

Pending Publication Date: 2022-04-15
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0004] The purpose of the present invention is to propose a novel rural distribution network optimization planning strategy based on robust optimization. conservative

Method used

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  • Novel rural power distribution network planning strategy based on robust optimization
  • Novel rural power distribution network planning strategy based on robust optimization
  • Novel rural power distribution network planning strategy based on robust optimization

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Embodiment 2

[0108] In this step, the model solving algorithm is the C&CG algorithm, and its basic idea is as described in the summary of the invention, and the specific solution process is described in Example 2;

[0109] If R(x)=0 can still be satisfied for the worst scenario searched in the solution process, it can be determined that the active power balance condition of the distribution network can still be satisfied;

[0110] On this basis, if the convergence criterion of the C&CG algorithm can be met, the optimal planning scheme is output.

[0111] Such as figure 2 Shown is the flow chart of the C&CG solution algorithm provided by Embodiment 2 of the present invention, and the process includes:

[0112] Step 201, initialize network information, input planning model and related parameters;

[0113] Step 202, set iteration times k=0, given initial upper bound UB=+∞, initial lower bound LB=-∞, given convergence criterion ε;

[0114] Step 203, solve the main problem in the expected s...

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Abstract

The invention discloses a novel rural power distribution network planning strategy based on robust optimization. The novel rural power distribution network planning strategy comprises the following steps: acquiring rural power grid system framework structure information of a certain region; generating an expected scene based on typical daily operation data of each season, and constructing a direct current load, alternating current load and roof photovoltaic polyhedron uncertainty set; a novel power distribution network networking mode suitable for rural areas is provided, and a power distribution network planning model is established with target annual planning and operation comprehensive benefit optimization as a target; converting the power distribution network planning model into a novel rural AC / DC hybrid power distribution network two-stage robust optimization planning model in an expected scene based on the expected scene and the uncertainty set; and solving the model by adopting a column and constraint generation algorithm, judging the feasibility of the power distribution network planning scheme under the worst scene searched in the solving process, and outputting the power distribution network optimization planning scheme when feasibility test and algorithm convergence criteria are met at the same time. By adopting the strategy, the investment decision of the novel power distribution network in the rural area can be optimized, and the method has positive significance for scientific planning of the power distribution network in the rural area in the future.

Description

technical field [0001] The invention relates to the field of rural network planning, in particular to a novel rural distribution network planning strategy based on robust optimization. Background technique [0002] With the improvement of the production and living standards of rural residents, a large number of new loads such as DC loads and thermoelectric coupling loads, as well as rooftop photovoltaic and energy storage units are connected to the rural grid, which introduces strong uncertainty to the planning and operation of the distribution network, and makes Problems such as weak grid structure, low voltage, and heavy loads in the station area are further highlighted. The DC distribution network based on Voltage Source Converter (Voltage Source Converter, VSC) has significant advantages over the traditional AC distribution network in terms of improving the consumption of distributed renewable energy and reducing network losses. The AC-DC hybrid new rural distribution n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06H02J3/38H02J3/32
CPCY02E10/56Y02E70/30Y02B10/10Y04S10/50
Inventor 艾欣王昊洋
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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