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A soft start method for power output of micro gas turbine power station

A micro gas turbine and power output technology, which is applied to the starter, motor generator/starter, and control generator of a single multi-phase induction motor, etc. Scope and utilization limitations, etc., to achieve the effect of increasing capacity, improving load capacity, and reducing motor starting current

Active Publication Date: 2019-09-10
BEIJING POWER MACHINERY INST
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Problems solved by technology

[0005] To sum up, in the distributed power generation system, for asynchronous motor loads, the load range of the micro gas turbine power station is very small, usually only about 10% of its rated power, which greatly limits the application range and utilization of the micro gas turbine power station. limits

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  • A soft start method for power output of micro gas turbine power station
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  • A soft start method for power output of micro gas turbine power station

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] Such as figure 1 As shown, the present invention provides a kind of soft start method of micro gas turbine power plant power output, comprising the following steps:

[0027] Step 1. For a load whose load type is motor type and whose parameters are known, the user inputs the load parameters on the host computer, and the host computer calculates the soft start parameters according to formula (6) and sends them to the digital power controller in the micro gas turbine power station , and then perform step 2, the load parameters include the rated voltage V of the load m , rated frequency f m , rated power P m and rated current I m , the soft-start parameters include the initial value of the output voltage V 0 , the initial value of the output frequency f 0 , output voltage change rate V slew and output frequency change rate f slew ,

[0028] ...

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Abstract

The invention discloses a soft starting method of power output of a micro gas turbine power station. The method comprises the steps as follows: (1) for a load of which the load type is a motor type and parameters are known, a user inputs load parameters into an upper computer, the upper computer calculates soft starting parameters, transmits the soft starting parameters to a digital power controller in the micro gas turbine power station and executes the step (2), the load parameters include rated voltage Vm, a rated frequency fm, rated power Pm and rated current Im of the load, and the soft starting parameters include an output voltage initial value V0, an output frequency initial value f0, an output voltage change rate Vslew and an output frequency change rate fslew; and (2) the digital power controller receives the soft starting parameters and drives the load to start according to the soft starting parameters. According to the soft starting method, the loading ability of the micro gas turbine power station can be improved on the basis of meeting an existing power output function, and especially, the soft starting method has a significant effect on the load of an asynchronous motor.

Description

technical field [0001] The invention belongs to the technical field of distributed power generation, and in particular relates to a soft start method for power output of a micro gas turbine power station. Background technique [0002] A micro gas turbine power station is an adaptable, low-emission and maintenance-free distributed power generation system. The gas turbine drives a high-speed permanent magnet generator, which outputs high-quality electric energy after power electronic conversion. The output end of the micro gas turbine power station can be connected to the grid as a current source for grid-connected power generation, or it can be used as an independent power supply to run with load in an off-grid environment. When operating as an independent power supply with load, the micro gas turbine power station generally directly outputs constant voltage and constant frequency AC power for users. Among them, the power electronic conversion and output voltage control are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P1/04H02P1/26H02P101/25H02P103/10
Inventor 朱明星马立丽王军张哲李亚芳秦秀娟霍雪娇吴晓玲
Owner BEIJING POWER MACHINERY INST
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