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Distributed photovoltaic power generating grid-connecting planning method and terminal equipment

A distributed photovoltaic and photovoltaic technology, applied in photovoltaic power generation, electrical components, circuit devices, etc., can solve the problems of high economic cost, low distributed photovoltaic penetration, unreasonable constraints, etc. Economical cost, the effect of increasing the voltage level

Active Publication Date: 2018-05-22
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0006] In view of this, the embodiment of the present invention provides a distributed photovoltaic power generation grid-connection planning method and terminal equipment to solve the unreasonable constraint conditions of the current distributed photovoltaic power generation grid-connection planning, resulting in a low penetration rate of distributed photovoltaic power generation and long-term planning The problem of higher economic costs in the process

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  • Distributed photovoltaic power generating grid-connecting planning method and terminal equipment
  • Distributed photovoltaic power generating grid-connecting planning method and terminal equipment

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Embodiment Construction

[0031] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0032] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0033] figure 1 The implementation flowchart of the distributed photovoltaic power generation grid-connection planning method provided by the embodiment of the present invention is described in detail as follows:

[0034] In S101, a photovoltaic probability model and ...

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Abstract

The invention is suitable for the field of photovoltaic power generation technology, and provides a distributed photovoltaic power generating grid-connecting planning method and terminal equipment. The method comprises the steps of establishing a photovoltaic probability model and a load probability model; calculating an initial time sequence sample of each preset time period according to median Latin hypercube sampling, the photovoltaic probability model and the load probability model; calculating power distribution network node voltage probability distribution according to a multiple-integration approximation method, a Gram-Charlier grade number, a probability trend equation and the initial time sequence sample; and establishing a photovoltaic grid-connecting opportunity restraining planning model according to the power distribution network node voltage probability distribution. The distributed photovoltaic power generating grid-connecting planning method and the terminal equipment have advantages of improving distributed photovoltaic permeability, reducing integrated economic cost in a long-term planning process of the power distribution network, and improving voltage level in ashort-period operation process of the power distribution network.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic power generation, and in particular relates to a distributed photovoltaic power generation grid connection planning method and terminal equipment. Background technique [0002] In recent years, green and clean solar power generation has developed rapidly, and distributed photovoltaic power generation technology has become the main form of renewable energy utilization. However, the output power of photovoltaic power generation is affected by the external environment, has random fluctuations, and there are obvious timing differences between photovoltaics and loads. Its large-scale and high penetration rate is connected to the distribution network, which changes the original distribution network. Power flow distribution, the change of this kind of power flow will affect the steady-state operating voltage distribution of the power grid, which will limit the grid-connected capacity of photovoltaic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/06H02J3/00
CPCH02J3/00H02J3/06H02J3/383H02J2203/20Y02E10/56
Inventor 马振宏王文宾段珺韩胜峰石磊磊宋胜光朱燕舞陈岩任雨王宁岳宇飞王君
Owner STATE GRID CORP OF CHINA
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