Centralized safety analysis method, device and system for multi-component electric quantity decentralized transaction of multiple power plants

Abstract

The invention discloses a centralized safety analysis method, device and system for multi-component electric quantity decentralized transaction of multiple power plants. The method comprises the stepsof enabling the power plants to report annual electric quantity monthly arrangement plan data and monthly electric quantity market transaction plan data in a rolling mode; establishing a multi-powerplant centralized electric quantity safety analysis optimization model; establishing a multi-component electric quantity balance constraint and sub-component electric quantity adjustment range constraint model of the power plant based on the data reported by the power plant; Setting different adjustment costs for the multi-component electric quantity plan of the power plant in the objective function; calculating the start-stop state of the unit in each time period and the multi-component electric quantity plan deviation of the power plant; and issuing the medium-and-long-term electric quantitysafety analysis conclusion to the power plant. Aiming at medium and long term physical transactions of power generation enterprises, the safety analysis services before transactions are provided, safety analysis conclusions and adjustment suggestions of multi-component electric quantity decentralized transactions of multiple power plants are given, the market transaction reference is provided, market members are guided to continuously correct the medium and long term physical transactions, and the performability of various power transactions is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of electric power system dispatching automation, and in particular relates to a centralized security analysis method, device and system for distributed transactions of multi-component electric power of multi-power plants. Background technique [0002] The new round of power system reform has clarified the goal of my country's power market construction: to gradually establish a power market that avoids risks through medium and long-term transactions, discovers prices through the spot market, and has a complete range of transactions and complete functions. At the current stage where the electricity spot market has not yet been established, the main form of electricity trading is medium and long-term electricity trading. The types of transactions in the medium and long-term market have been continuously enriched, and such types as direct electricity transactions and contracted electricity transfer transactions ...

AI Technical Summary

Problems solved by technology

However, security check is a post-event adjustment link for decentralized transaction results to ensure the security of the power grid. The adjustment of transaction power will affect the production plans of market members, and frequent transaction adjustments will cause market fairness.

At the same time, the mid- and long-term power calibration is mainly based on the experience of operators, and the feasibility of transactions is judged by estimating the limit value of cross-section transmission power. This method has been difficult to meet the increasingly complex power grid operation mode.

Furthermore, the completion progress requirements of each component of the power plant trading power are different. When the trading power cannot meet the security constraints of the power grid, the power adjustment of the power plant needs to consider the coordination between multi-component trading power, and there is currently a lack of corresponding supporting technologies

Images