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Maximum output prediction method and system capable of quickly responding to coal-fired unit

A fast-response, maximum-effort technology, applied in system integration technology, information technology support systems, data processing applications, etc., can solve problems such as the long time required for load response, achieve simple prediction methods, true and reliable prediction results, and improve coordination effect

Active Publication Date: 2019-07-09
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the automatic generation control system (AGC) still performs load distribution and scheduling according to the rated capacity of the unit, it should reserve the necessary time to start the standby coal mill, which will inevitably lead to a long time for the unit to respond to the load

Method used

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  • Maximum output prediction method and system capable of quickly responding to coal-fired unit
  • Maximum output prediction method and system capable of quickly responding to coal-fired unit
  • Maximum output prediction method and system capable of quickly responding to coal-fired unit

Examples

Experimental program
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Effect test

Embodiment 1

[0046] This embodiment provides a method for predicting the maximum output of a coal-fired unit that can respond quickly, which obtains a real-time coal load curve through a benchmark coal load curve, and predicts the maximum output of a coal-fired unit that can respond quickly according to the real-time coal load curve. Load curve and real-time coal load curve are dynamically updated.

[0047] The method of obtaining the real-time coal load curve through the reference coal load curve is: add the real-time correction item to the reference coal load curve to obtain the real-time coal load curve, as follows:

[0048]

[0049] In the formula, B is the total amount of coal; is the real-time coal load curve of the nth working condition; is the reference coal load curve of the nth working condition; is the real-time correction item for the nth working condition.

[0050] The real-time correction item is calculated according to the following formula:

[0051]

[0052] In...

Embodiment 2

[0072] This embodiment provides a rapid-response maximum output prediction system for coal-fired units, which includes:

[0073] The real-time coal load curve acquisition unit obtains the real-time coal load curve through the reference coal load curve;

[0074] The maximum output prediction unit predicts the maximum output of the coal-fired unit that can respond quickly according to the real-time coal load curve;

[0075] The dynamic updating unit is used for dynamic updating of the reference coal load curve and the real-time coal load curve.

[0076] The real-time coal load curve is obtained by adding real-time correction items to the benchmark coal load curve, as follows:

[0077]

[0078] In the formula, B is the total amount of coal; is the real-time coal load curve of the nth working condition; is the reference coal load curve of the nth working condition; is the real-time correction item of the nth working condition;

[0079] The real-time correction item is c...

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Abstract

The invention discloses a maximum output prediction method and system capable of quickly responding to a coal-fired unit. According to the method, a real-time coal load curve is obtained through a reference coal load curve, the maximum output capable of being responded quickly of the coal-fired unit is predicted according to the real-time coal load curve, and the reference coal load curve and thereal-time coal load curve are dynamically updated; the method for obtaining the real-time coal load curve through the reference coal load curve comprises the step of adding a real-time correction itemto the reference coal load curve to obtain the real-time coal load curve. The method can accurately predict the maximum output of the coal-fired unit capable of rapidly responding under the current operation condition, is simple in prediction method, facilitates the real-time determination of the maximum adjustment capability of the coal-fired unit on an electric power system, and improves the coordination of a power supply and a power grid.

Description

technical field [0001] The invention relates to the technical field of thermal power unit output, in particular to a method and system for predicting the maximum output of a coal-fired unit that can respond quickly. Background technique [0002] In recent years, the power consumption of the whole society in the economically developed provinces in the eastern coastal areas of my country has continued to rise, and the purchased power has increased rapidly, which has further increased the peak-to-valley difference in the daily operation of the local power system. In response to this new situation in the power system, many 300,000-kilowatt and above pure condensate coal-fired units have undergone flexible transformation or developed research on their own peak-shaving potential, and the minimum technical output of some advanced subcritical units has been reduced to 30 %Rated Capacity. When these coal-fired units participate in low-load deep peak regulation, the number of coal mi...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06375G06Q50/06Y02E40/70Y04S10/50
Inventor 吕洪坤张晓龙应明良丁历威
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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