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Power transmitting system and power transmitting method for power generator

A generator power and generator technology, applied in the direction of controlling generators, control systems, electrical components, etc., can solve problems such as generator power fluctuations, power transmitter output power distortion, abnormal automatic control systems, etc., to ensure Steady-state sampling accuracy, preventing malfunction, and preventing abnormal and large fluctuations in generator power

Inactive Publication Date: 2016-09-07
ZHUHAI ZHONGRUI ELECTRIC POWER TECH
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Problems solved by technology

[0003] The reason is: the sampling front end of the generator power regulation system is generally the outlet power transmitter of the generator or the generator-transformer unit. When the system fails, the voltage drops and the current increases sharply, while the measurement-level current mutual inductance connected to the power transmitter Due to the TA speed saturation characteristic of the transmitter, the secondary current value of the transmitter sampling TA does not increase correspondingly according to the transformation ratio, which leads to serious distortion of the output power of the power transmitter
This will lead to abnormal operation of the related automatic control system, causing abnormal large fluctuations in generator power, and even causing zero-power cut-off protection action of the generator set to cut off the machine incorrectly.

Method used

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  • Power transmitting system and power transmitting method for power generator

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Embodiment Construction

[0022] Such as figure 1 As shown, a generator power transmission system, which includes a power transmission device 1, a machine-side protection level current transformer 2, a machine-side measurement level current transformer 3, a generator machine-side voltage transformer 4, the power The transmission device 1 is respectively connected to the generator 5 through the machine-side protection level current transformer 2, the machine-side measurement level current transformer 3, and the generator machine-side voltage transformer 4, and the power transmission device 1 is connected to the generator through the power generation Machine-side voltage transformer 4, machine-side protection level current transformer 2, machine-side measurement level current transformer 3 collect generator machine-side three-phase voltage, machine-side protection level current transformer 2 three-phase current and machine-side measurement level Three-phase current of the current transformer; use the ful...

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Abstract

The invention provides a power transmitting system for a power generator, and abnormal drastic fluctuation of the power of the power generator caused by incorrect action of a power automatic regulation system of the power generator under system fault can be prevented. In addition, the invention also provides a power transmitting method for the power generator, and the abnormal drastic fluctuation of the power of the power generator caused by incorrect action of the power automatic regulation system of the power generator under system fault can be prevented. The power transmitting system and the power transmitting method are applicable to the field of electrical equipment.

Description

technical field [0001] The invention relates to a generator power transmission system and a transmission method thereof. Background technique [0002] With the increasing degree of automation of the power system, automatic power plant power adjustment and remote automatic frequency adjustment are basically popular. However, when the system fails or there is a large disturbance, the power regulation system of the generator will follow the action, and power overregulation often occurs, causing large fluctuations in generator power and unstable operation of the unit. [0003] The reason is: the sampling front end of the generator power regulation system is generally the outlet power transmitter of the generator or the generator-transformer unit. When the system fails, the voltage drops and the current increases sharply, while the measurement-level current mutual inductance connected to the power transmitter Due to the TA speed saturation characteristic of the transmitter, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/00
CPCH02P9/00
Inventor 曹武中
Owner ZHUHAI ZHONGRUI ELECTRIC POWER TECH
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