A kind of overload protection method of hydroelectric generating set
A generator set, overload protection technology, applied in hydropower, engine components, machines/engines, etc., can solve problems such as no open overload protection scheme, and achieve the effect of improving work efficiency
Active Publication Date: 2020-12-29
唐山鼎信电器仪表工程有限公司
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However, this patent only discloses the measurement of various data in the process of power generation and transmission, and does not disclose a specific overload protection scheme
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[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0030] refer to figure 1 , which is an overload protection method for a hydraulic generator set disclosed in an embodiment of the present invention, mainly includes the following steps:
[0031] Step S1, the overload detection device collects the overload signal, and sends the overload signal to the unit LCU controller;
[0032] The overload detection device may be a voltage and current acquisition device, which collects the voltage and current signals of the electrical output circuit of the hydro-generator in real time, and sends the voltage and current signals to the unit LCU controller.
[0033] Step S2, the unit LCU controller judges whether the value of the overload signal is not less than the first preset value, if so, enters step S3, otherwise repeats step S1;
[0034] The unit LCU controller is the core of the entire hydro-generator control system, ...
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The invention relates to an overload protection method for a water-turbine generator set. The overload protection method comprises the steps that S1, an overload detecting device collects an overloadsignal and sends the overload signal to a unit LCU; and S2, the unit LCU judges whether the numerical value of the overload signal is not smaller than a first preset value or not, if yes, the step 3 is executed, and if not, the step 1 is repeated; S3, the unit LCU judges the numerical value of the overload signal is smaller than a second preset value or not, the second preset value is larger thanthe first preset value, if yes, the step 4 is executed, and if not, the step 6 is executed; S4, the LCU generates a speed regulating command and sends the speed regulating command to a hydrogovernor;and S5, the hydrogovernor makes a response to the speed regulating command, the rotating speed of a water turbine is reduced, and the step 1 is repeated; and S6, the unit LCU controls the water-turbine generator set to execute emergency shutdown. According to the overload protection method, the water-turbine generator set can be subjected to overload protection.
Description
technical field [0001] The invention relates to the technical field of overload protection of a hydraulic generator set, in particular to a method for overload protection of a hydraulic generator set. Background technique [0002] The hydroelectric generator is the power generation equipment of the hydroelectric generator set, which uses the water turbine as the prime mover to convert water energy into electrical energy. When the water flows through the water turbine, the water energy is converted into mechanical energy, and the rotating shaft of the water turbine drives the rotor of the generator, which converts the mechanical energy into electrical energy and outputs it. [0003] When the hydro-generator is overloaded, for example, the driving load exceeds the rated value, the generator current is overloaded, etc., the signal is generally collected by setting up a signal acquisition device, and the overload protection is realized. For example, the Chinese patent with the ...
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IPC IPC(8): F03B15/18F03B15/12
CPCF03B15/12F03B15/18Y02E10/20
Inventor 刘永
Owner 唐山鼎信电器仪表工程有限公司