Method for determining bidding electric quantity boundary of cascade hydropower station group participating in day-ahead spot market

Abstract

The invention relates to the field of electric power markets, hydropower dispatching and power grid operation, and discloses a bidding electric quantity boundary determination method for a cascade hydropower station group participating in a day-ahead spot market. With continuous improvement of electric power spot market construction in China, participation of water and electricity in the spot market is imperative. In the electricity market, clearing efficiency is related to safe and stable operation of a power grid. In order to solve the problems that a spot clearing model is complex, clearing efficiency is low, water abandoning is easily caused when water and electricity participate in a spot market, and transaction results are difficult to execute due to complex hydraulic connection of cascade upstream and downstream reservoirs, day-ahead marketization boundary conditions of cascade hydropower stations are determined, and the concept of absolute feasible electric quantity intervals of the hydropower stations is provided; the evolution rule that the electricity boundary of the cascade hydropower station changes along with the power generation water volume is disclosed, the problem that upstream and downstream power stations are not matched is completely avoided, the solving efficiency of the clearing model is improved, and a feasible thought is provided for market operators to manage water and electricity to participate in the spot market.

Description

technical field [0001] The invention relates to the fields of electric power market, hydropower dispatching and power grid operation, in particular to a method for determining the boundary of bidding electric quantity in which cascaded hydropower station groups participate in the spot market before the day. Background technique [0002] With the continuous improvement of the construction of my country's electricity spot market, it is imperative for hydropower to participate in the spot market. Unlike other power sources such as thermal power, hydropower's participation in the spot market mainly faces the following problems: [0003] 1) Difficulty in matching upstream and downstream bids in hydropower spot transactions: that is, because the cascade upstream and downstream power stations may belong to different entities, but the hydraulic connection is closely coupled, resulting in more competition for upstream power plants and less competition for downstream power plants, res...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for determining the boundary of bidding electricity for cascade hydropower station groups participating in the day-ahead spot market, in order to improve the efficiency of hydropower participating in spot clearing, and to avoid transaction results caused by the mismatch between upstream and downstream bids for cascade hydropower clearing difficult to implement

Images