A power grid thermoelectric optimization scheduling method based on wind curtailment pre-evaluation

Abstract

The invention discloses a power grid thermoelectric optimization scheduling method based on wind curtailment pre-evaluation. The method comprises the steps that 1, a dispatching center carries out day-ahead wind curtailment pre-evaluation and issues wind curtailment evaluation data to a wind curtailment transaction center for heat storage and absorption of wind curtailment; 2, the wind abandoningtransaction center issues the wind abandoning assessment data to heat storage enterprises, and obtains a future 24-hour optimal heat storage plan and a wind abandoning electric power subscription planformulated by each heat storage enterprise according to the wind abandoning assessment data and self heat storage requirements; 3, the wind curtailment transaction center clears out the wind curtailment transaction power according to the wind curtailment assessment data and the wind curtailment demand function; and 4, the dispatching center confirms the power purchase plan of the heat storage enterprise, then reduces the wind curtailment power of the corresponding wind power plant, and completes the thermoelectric optimization dispatching of the power grid. The method can track and purchase the wind curtailment in real time, fully consumes the wind curtailment of the wind power plant as much as possible, and improves the wind power utilization rate.

Description

technical field [0001] The invention belongs to the field of electric power market optimization, and in particular relates to a power grid thermal power optimal dispatching method based on the pre-assessment of abandoned wind. Background technique [0002] In recent years, wind power has developed rapidly. In 2017, the country’s cumulative grid-connected installed capacity reached 164 million kilowatts, accounting for 9.2% of the total power generation installed capacity. However, at the same time, the phenomenon of abandoned wind power is very serious. In 2017, the national abandoned wind power was about 41.9 billion kilowatts. Time. Wind curtailment is mainly concentrated in the three north regions of China and most of them occur during the winter heating period. The main reason is that the combined heat and power units in the three north regions generally work in the mode of "heating to determine electricity" in winter, and the peak regulation capacity of the system is si...

AI Technical Summary

Problems solved by technology

In this mode of heat storage to accommodate abandoned wind, the electric heating power of the heat storage system is not linked with the wind farm, and only a small part of the electricity used by the heat storage system comes from the abandoned wind power, and most of it uses thermal power from the grid. A large amount of curtailed wind will still be generated during the period when there is a large amount of curtailed wind power

Images