Real-time estimating method for load margin of thermal power generating units

A thermal power unit, real-time prediction technology, applied in electrical digital data processing, instruments, calculations, etc., can solve the problem of affecting the real-time accuracy of thermal power unit adjustment instructions, operating conditions that cannot meet power grid requirements, and adjustable maximum load that cannot reach the set value. And other issues

Inactive Publication Date: 2014-03-26
CHINA SOUTHERN POWER GRID COMPANY +2
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Problems solved by technology

[0002] At present, the real-time load adjustment instructions of thermal power units are generally specified by grid dispatchers, without considering the actual unit operating conditions. It often happens that the power plant cannot respond and meet the requirements of the power grid due to technical

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  • Real-time estimating method for load margin of thermal power generating units
  • Real-time estimating method for load margin of thermal power generating units
  • Real-time estimating method for load margin of thermal power generating units

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with specific examples. .

[0036] The thermal power unit load margin real-time prediction method of the present invention comprises the following steps:

[0037] 1) Collect the design values ​​of various influencing factors of thermal power units within 12 months and the actual operating values ​​of thermal power units under different loads. Among them, the influencing factors of thermal power units include coal feeder output, low-temperature reheater wall temperature, high-temperature reheat Heater wall temperature, low-temperature superheater wall temperature, medium-temperature superheater wall temperature, high-temperature superheater wall temperature, steam-water separator temperature, main steam pressure, feed water flow, differential expansion, shaft vibration, tile vibration, coal mill current, primary Fan current, blower current and induced draft fan current, the actual operating values ​​of...

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Abstract

The invention discloses a real-time estimating method for load margin of thermal power generating units. The real-time estimating method includes the steps of collecting design values of various influence factors of the thermal power generating units of a power plant within 12 months and running values of the thermal power generating units under different loads; by a BP (back propagation) neural network process, training out combined weight coefficients of difference values between design values of the influence factors and actual running values to different values between design values of load of the thermal power generating units and actual running values of load, acquiring difference values between design values of different influence factors of the power plant within one month and the maximum actual running value; acquiring real-time rate values of load regulation of the thermal power generating units through the BP neural network by the above steps; calculating the maximum adjustable load values of the thermal power generating units, and taking the maximum designed load values as the maximum adjustable load if the calculated maximum adjustable load values are larger than the maximum actual design load. The real-time estimating method can assist in learning the real-time power generation capacity of the power plant, so that power outputs of the thermal power generating units in a power grid can be adjusted in time according to real-time conditions thereof.

Description

【Technical field】 [0001] The invention belongs to the technical field of thermal power generation, and in particular relates to a real-time prediction method for a thermal power unit load margin. 【Background technique】 [0002] At present, the real-time load adjustment instructions of thermal power units are generally specified by grid dispatchers, without considering the actual unit operating conditions. It often happens that the power plant cannot respond and meet the requirements of the power grid due to technical reasons, resulting in the thermal power unit’s adjustable maximum load under actual conditions. As a result, some units cannot meet the requirements of the power grid due to the actual operating conditions, which will affect the adjustment instructions and real-time accuracy of thermal power units. 【Content of invention】 [0003] The purpose of the present invention is to overcome the above-mentioned defects in the prior art, and provide a real-time prediction...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 宋兴光范奇赖菲王智微刘超飞陈钢
Owner CHINA SOUTHERN POWER GRID COMPANY
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