AGC dispatching battery charge and discharge method

Abstract

The present invention relates to an AGC dispatching battery charge and discharge method. for actual consideration of a northern area, because the hydroelectric resources are not rich and the temperature influence in the winter is large, the hydroelectric resources can be only taken as fine regulation effect, and therefore the hydroelectric effect is not considered in the winter heating supply period. Thermal power is established, a battery energy storage device participates in an AGC dispatching system, the system states mainly comprises four control states of: a conditional power supply control state, a battery charge state, a battery charge state and a clean energy control state. The determination of a working area mainly takes network entry of all the new energy as a premise to employ alimit control strategy and take out lower limit of a thermal power generating unit and a capacity limit of a battery unit as critical conditions, the thermal power is taken as the main factor, the battery is taken as an auxiliary factor, and therefore the stability of the system is ensured while the clean energy is consumed.

Description

technical field [0001] The invention belongs to the field of electric power dispatching, and relates to a battery charging and discharging method for AGC dispatching Background technique [0002] In the traditional mode, dispatching controls the power supply to adapt to load changes, realizes peak regulation and frequency regulation, and ensures the balance between supply and demand of the power grid. In recent years, nuclear power, wind power, and photovoltaics have grown rapidly, but the load growth has been relatively slow, and the phenomenon of oversupply has become more serious. At the same time, wind power and photovoltaics have intermittent characteristics, which pose a major safety hazard to the operation of the power grid. The problem of clean energy acceptance has become more prominent . In the winter of 2015, wind curtailment even reached 50%. In order to make better use of clean energy, reduce thermal power generation, protect the ecological environment, and dev...

AI Technical Summary

Problems solved by technology

The current AGC is based on the AGC scheduling of thermal power, and the energy storage element is used as an auxiliary output scheduling measure and has not been included in the AGC scheduling control. As a means of absorbing new energy and controlling the frequency stability, the energy storage element has not been included in the AGC. During dispatching, the two cannot better increase the consumption of new energy and perform rapid real-time adjustment

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