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A real-time evaluation method and system for thermal power unit primary frequency regulation energy storage

A thermal power unit, energy storage technology, applied in mechanical equipment, steam engine devices, engine components, etc., can solve the problem of inaccurate real-time energy storage evaluation methods, etc., to achieve the effect of improving accuracy

Active Publication Date: 2022-03-22
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fact that there are few studies on the real-time energy storage evaluation of primary frequency modulation of units, and there is no accurate real-time energy storage evaluation method, this patent proposes a real-time evaluation and quantification method for primary frequency modulation energy storage of thermal power units

Method used

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  • A real-time evaluation method and system for thermal power unit primary frequency regulation energy storage
  • A real-time evaluation method and system for thermal power unit primary frequency regulation energy storage
  • A real-time evaluation method and system for thermal power unit primary frequency regulation energy storage

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Embodiment 1

[0058] Such as image 3 As shown, the present invention discloses a real-time evaluation method for primary frequency modulation energy storage of a thermal power unit, the method comprising:

[0059] Step S1: Obtain the current operating parameters and design parameters of the thermal power unit.

[0060] Step S2: Use the current operating parameters and the design parameter unit to conduct a step disturbance experiment on the thermal power unit to determine the inertia time for each component energy to respond to a frequency modulation command; each component includes: superheater, reheater, water wall and Economizer.

[0061] Step S3: Calculate the total energy storage corresponding to each component according to the inertia time of each component's energy response to a frequency modulation command.

[0062] Step S4: Determine the energy storage of the thermal power unit for primary frequency regulation according to the total energy storage corresponding to each component...

Embodiment 2

[0092] Such as Image 6 As shown, the present invention provides a thermal power unit primary frequency regulation energy storage real-time evaluation system, the system includes:

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Abstract

The invention discloses a real-time evaluation method and system for primary frequency modulation energy storage of a thermal power unit. First, the current operating parameters and design parameter units are used to conduct a step disturbance experiment on the thermal power unit to determine the inertia time for each component energy to respond to a frequency modulation command; then according to each The total energy storage corresponding to each component is calculated according to the inertia time of the component energy response to a frequency regulation command; finally, the energy storage of the thermal power unit for primary frequency regulation is determined according to the total energy storage corresponding to each component. The present invention firstly determines the inertia time of the energy response of each component to a frequency modulation command, and then determines the energy storage of the thermal power unit for the primary frequency modulation based on the inertia time of each component energy response to a frequency modulation command, compared with the existing one that does not divide the time The method for determining the energy storage used by the electric machine for primary frequency regulation further improves the accuracy of real-time evaluation of the electric machine's energy storage for primary frequency regulation.

Description

technical field [0001] The invention relates to the technical field of frequency modulation of thermal power units, in particular to a real-time evaluation method and system for primary frequency modulation energy storage of thermal power units. Background technique [0002] The primary frequency regulation capability of thermal power units is an important capability to support power system frequency regulation. According to the national standard "Guidelines for Primary Frequency Modulation Test and Performance Acceptance of Thermal Power Generating Sets" (GB / T 30370-2013), the primary frequency modulation response capability that thermal power generating units should have is stipulated: thermal power generating units should have a speed variation rate of 3% to 6 %; the response time for coal-fired units to reach 75% of the target load should not exceed 15s, and the time to reach 90% of the target load should not exceed 30s. Due to the lag and inertia of the boiler, when a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01K13/00F01K13/02F01K21/00F01D15/10F01D21/00
CPCF01K13/00F01K13/02F01K21/00F01D15/10F01D21/003
Inventor 洪烽宋杰杜鸣牛玉广任国瑞吕春雷周振华张金祥
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)