Automatic control method of active power of photovoltaic power station to eliminate grid transmission power exceeding the limit

Abstract

The invention provides a photovoltaic plant active power automatic-control method capable of eliminating grid transmission power out of limit, and belongs to the technical field of operation and control in accessing new energy to an electric power system. To solve the problem of out-of-limit power which is possibly generated in a photovoltaic power generation converging area, by taking the active power of photovoltaic plants as a control variable and taking active power regulation capacity of different photovoltaic plants as constraint condition, the method which includes building a quadratic programming model and performing effective solving by a battle method aims to eliminate out-of-limit of grid transmission section and balance powers of different photovoltaic plants. The method can be integrated with a photovoltaic plant active power automatic-control main station system which runs at a dispatching control center so that the system can implement a moderate control strategy according to real-time running states of the photovoltaic plants and the grid. Thus active power safety of the grid section is guaranteed while both fair dispatching of the different photovoltaic plants and photoelectric utilization maximum are achieved.

Description

technical field [0001] The invention relates to an automatic control method for the active power of a photovoltaic power station that eliminates grid transmission power exceeding the limit, and belongs to the technical field of operation and control of new energy access power systems. Background technique [0002] The characteristics of strong randomness of optical resources, difficulty in forecasting, and anti-peak regulation make it more difficult to dispatch and control the active power of the power grid. How to maximize the utilization of photovoltaic power generation resources and absorb as much photovoltaic power generation as possible under the premise of ensuring the safety of the power grid has become one of the common challenges faced by the power grids where photovoltaic power generation bases are located. At present, the industry has conducted a lot of research on active power dispatching control after photovoltaic power generation is connected, and has achieved ...

AI Technical Summary

Problems solved by technology

This method relies on the experience of the operator, and it is difficult to accurately and quickly release the cross-limit active power of the section, and it is also difficult to take into account the safety of the line section and the economical efficiency of the operation of the photovoltaic power station.

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