Three-side primary frequency modulation control method and system of heat-supply generator unit

A technology for generating sets and heating systems, applied to engine components, machines/engines, mechanical equipment, etc., can solve problems such as large unit efficiency, slow response speed, increased throttling loss of main steam control valve, etc., to achieve improved performance and stability The effect of heating pressure
CN107989665AActive Publication Date: 2018-05-04SHANGHAI HUADIAN ELECTRIC POWER DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI HUADIAN ELECTRIC POWER DEV CO LTD
Publication Date
2018-05-04

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Abstract

The invention discloses a three-side primary frequency modulation control method of a heat-supply generator unit. The frequency modulation diversity factor function is used as the feedforward output of a heat-supply pressure regulator in a heat-supply system to be acted on a steam turbine heat-supply regulating device, the change of the steam flow entering a low pressure steam turbine is used, thechange of forming primary frequency modulation power is increased to the heat-supply generator unit, and primary frequency modulation is carried out by the heat-supply generator unit. On the basis ofthe bilateral common primary frequency modulation of an original coordination side and a speed regulating side, the function of the primary frequency modulation (feedforward) of the heat-supply sideis increased, the function of the three-side (control system) primary frequency modulation is composed, not only meet the increment of fast and continuous power of the primary frequency modulation, but also the heat-supply quality is not affected, finally the throttling loss of a main steam governing valve is reduced, and the generating efficiency of the heat-supply generator unit is enhanced.
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Description

technical field

[0001] The invention belongs to the technical field of thermal power plant control, and in particular relates to a three-side primary frequency modulation control method and system for a heating generating set. Background technique

[0002] At present, most of the units in the power grid are frequency-regulated units. The grid load dispatching center adjusts the power of the frequency-regulated units in the power grid according to the deviation of the grid frequency from the rated value, so that the total power generation and the total load are balanced. This is secondary frequency regulation. Primary frequency regulation is a function of the coordinated control system of the generator set itself. The control system of the grid-connected generator set automatically controls the increase or decrease of the active power of the unit, limits the change of the grid frequency, and maintains the grid frequency. The automatic control process is stable.

[0003] Jiang...

Claims

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