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Adaptive planning method and system for rural power distribution network containing distributed photovoltaics

A distributed photovoltaic and distribution network technology, applied in power network operating system integration, information technology support systems, climate sustainability, etc., can solve problems such as hidden dangers and increased complexity of power grids, improve local voltage, reduce retrofits, etc. cost, the effect of improving the reliability of power supply

Pending Publication Date: 2020-03-24
国网山西省电力公司经济技术研究院 +1
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Problems solved by technology

[0002] At present, the planning and design of the rural power grid mainly adopts the traditional power grid planning method. The planners formulate the plan based on personal experience and local calculations, and adopt a reasonable technical and economic plan from the feasible plan, which is quite subjective. Due to the implementation of photovoltaic Poverty alleviation policies, new loads and photovoltaic power sources are connected to rural distribution networks, making them more complex. In the past, the local optimal planning method in the design of rural power grids will bring hidden dangers to the power grid. Therefore, it is necessary to fully consider new loads and photovoltaic power sources. The impact of the device on the power flow and node voltage of the rural distribution network, the unified planning of the rural power grid, and the optimal allocation of photovoltaic resources

Method used

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  • Adaptive planning method and system for rural power distribution network containing distributed photovoltaics
  • Adaptive planning method and system for rural power distribution network containing distributed photovoltaics
  • Adaptive planning method and system for rural power distribution network containing distributed photovoltaics

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Embodiment 1

[0084] Such as figure 2 Shown is the voltage level of the photovoltaic penetration rate from 0% to 300% in the IEEE 33 node distribution network. With the increase of photovoltaic penetration rate, except for node 1 (balanced node), the voltages of other nodes all appear to rise in voltage. The voltage rise of nodes 17, 18, 30, 31, 32, and 33 farthest from the power point in the distribution network is the most obvious, and the voltage changes of nodes 2, 3, and 19 near the power point are not obvious.

[0085] The cross-limit of distribution network node voltage has become the main factor limiting the penetration level of photovoltaic system in rural distribution network. Different photovoltaic power access locations and photovoltaic installation capacity have different impacts on the voltage of each node of the rural distribution network.

[0086] Taking the IEEE 33-node distribution network system as an example to study the distributed photovoltaic adaptive planning of t...

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Abstract

The invention discloses an adaptive planning method and system for a rural power distribution network containing distributed photovoltaics. The method comprises the following steps: obtaining photovoltaic permeability; determining an annual typical time point according to the photovoltaic permeability; simulating the rural power distribution network operation condition by adopting a random methodaccording to the annual typical time point to obtain a simulation result; and planning distributed photovoltaic resources configured for the rural power distribution network according to the simulation result. The influence of the novel load and the photovoltaic device on the rural power distribution network tide and the node voltage can be fully considered, the rural power grid is planned in a unified mode, and photovoltaic resource optimal configuration is achieved.

Description

technical field [0001] The invention relates to the field of rural distribution network planning, in particular to an adaptive planning method and system for a rural distribution network including distributed photovoltaics. Background technique [0002] At present, the planning and design of the rural power grid mainly adopts the traditional power grid planning method. The planners formulate the plan based on personal experience and local calculations, and adopt a reasonable technical and economic plan from the feasible plan, which is quite subjective. Due to the implementation of photovoltaic Poverty alleviation policies, new loads and photovoltaic power sources are connected to rural distribution networks, making them more complex. In the past, the local optimal planning method in the design of rural power grids will bring hidden dangers to the power grid. Therefore, it is necessary to fully consider new loads and photovoltaic power sources. The impact of the device on the...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/14H02J3/46
CPCH02J3/14H02J3/46Y04S20/222Y02B70/3225
Inventor 董晋喜王佳伟许振波秦文萍姚宏民于浩张翔宇黄河王亚菊李佳徐亚男
Owner 国网山西省电力公司经济技术研究院
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