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Output optimal operation method of thermal power unit based on electricity marketization environment

A technology for unit output and optimized operation, which is applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc.

Inactive Publication Date: 2010-06-30
ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The risk of electricity price forecast determines the risk of grid bidding and load scheduling

Method used

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  • Output optimal operation method of thermal power unit based on electricity marketization environment
  • Output optimal operation method of thermal power unit based on electricity marketization environment
  • Output optimal operation method of thermal power unit based on electricity marketization environment

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Embodiment Construction

[0043] The first purpose of the present invention: to provide a thermal power plant unit output optimization operation method based on the electricity market environment, including the following steps:

[0044] (1) Establish a manual input parameter table and a real-time system database for unit production

[0045] The essence of power plants bidding online is that each power plant reports the available power generation capacity of each unit of the plant and the corresponding electricity cost and capacity cost in a timely manner based on the predicted load data. To do this, a comprehensive cost analysis must be carried out. The cost is the basis for formulating the on-grid electricity price, and the primary task of the price is to reflect the cost. The power generation cost of a power plant is divided into two parts: fixed cost and variable cost.

[0046]Fixed costs include depreciation costs, equipment maintenance costs, repair costs (regular overhaul and minor repairs), fin...

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Abstract

The invention discloses an output optimal operation method of a thermal power unit in the environment of ensuring electricity price bidding marketization, and the method comprises the following steps: establishing a manual input cost parameter table and a unit production real-time system database; establishing a generating fuel cost curve of the unit; calculating the start-stop cost and the fixed cost of the unit; calculating the environment cost of the unit, internalizing the environment cost and calculating the environment cost directly according to harmful gas emission and a discount standard; analyzing bidding risk; establishing an objective function of a mathematical model of economic operation of a single unit based on profit maximization; guaranteeing constraint conditions of optimal operation of the unit; and establishing the best output model table of the unit at various periods. The method considers the factors of environmental protection cost and bidding risk comprehensively, thus reducing harmful gas emission of the power plant when a generation company does not add environmental protection equipment, and moreover, reasonable analysis of the bidding risk can realize price bidding of low risk and high profit.

Description

technical field [0001] The invention relates to the technical field of energy saving, in particular to a thermal power plant unit output optimization operation method under the environment of bidding online in the electric power market. Background technique [0002] In the electricity market system, "bidding for grid access" is implemented for power generators, and the uncertainty of the market behavior of both power supply and demand leads to the uncertainty of market electricity price fluctuations. Power generators generally need to judge future electricity price trends from the electricity price forecasting model. And based on this, the load output of the unit at each time period is optimized, and the best power generation quotation plan is formulated to maximize the profit of electricity sales. The risk of electricity price forecast determines the risk of grid bidding and load scheduling. At present, how to find an optimal bidding strategy that minimizes the risk of quo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02Y02P90/80
Inventor 李海山彭春华林显敏陈林国陈文朱云鹏
Owner ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO
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