Grid-structure photovoltaic consumption capability optimization method based on trend constraints

Abstract

The invention relates to a grid-structure photovoltaic consumption capability optimization method based on trend constraints. According to the method, under the condition that the constraint of safe, stable, economic and efficient operation of a power grid is guaranteed, a distributed photovoltaic generating maximum installation capacity which can be consumed by a power distribution network is solved, and through integrated consideration of factors restricting distributed photovoltaic generating in the power distribution network, the consumption capability of the power distribution network for distributed new energy is analyzed. The method provided by the invention has the following advantages: the object function value of an optimization result can be enabled to be equal to the extreme capacity accessed by distribution network distributed energy, the optimality of an optimization result is guaranteed, in operation of the power grid, control over active trends of sections by scheduling departments is improved, certain reliability level is ensured, and safe, stable, more economic and higher-efficiency operation of the power grid is guaranteed.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a grid photovoltaic accommodation capacity optimization method based on power flow constraints. Background technique [0002] With the rapid development of the economy and the gradual improvement of people's living standards, the electricity load is also gradually increasing, and the demand for energy is increasing sharply. Pay attention to. The main characteristics of the current power network power supply mode are large-capacity power grids, large-scale generator sets, and high-voltage levels. The interconnection mode of the centralized power supply grid has obvious disadvantages: (1) security and stability problems, the system is large, the network structure is complex, and it is difficult to control the system in time. When a fault occurs somewhere in the system, it may cause a butterfly chain reaction, which will affect the entire system. The system h...

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Problems solved by technology

(3) The problem of economic cost of construction. my country has a vast territory and vast territory, and it is difficult for power supply to cover some remote areas such as the Xinjiang desert area and the Qinghai-Tibet Plateau. Due to the large altitude difference and the distance from the large power grid, the investment cost of building power system transmission lines is high. , serious network loss

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