Overspeed control system and overspeed control method for trt unit
An overspeed control and unit technology, applied in the direction of charging system, turbine/propulsion fuel delivery system, turbine/propulsion device fuel control, etc., can solve the problem of rotor blade falling off, turbine main engine, generator exciter damage, unit overspeed Problems such as downtime, to achieve the effect of increasing the power generation of a single machine, extending the operating cycle, and avoiding major accidents such as machine crashes and human deaths
Active Publication Date: 2016-01-20
INNER MONGOLIA BAOTOU STEEL UNION
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Problems solved by technology
Turbine generator sets have experienced overspeed shutdown accidents due to the high voltage withdrawal on the system side of the power supply substation for many times in a short period of time, and at the same time caused the rotor blades to fall off during operation, resulting in serious damage to the turbine main engine, generator, and exciter, resulting in direct economic losses. millions of dollars
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Embodiment 1
[0048] Such as figure 1 Shown is the circuit diagram of the overspeed control system of the TRT unit in the present invention.
[0049] TRT unit overspeed control system includes: generator load three-phase current signal comparison unit 10 , contact circuit breaker position signal input unit 20 , load shedding logic judgment unit 30 , turbine control system 40 , and turbine quick cut valve 50 .
[0050] The generator load three-phase current signal comparison unit 10 receives the generator load three-phase current signal provided by the CT (current detection element) in the outlet circuit breaker of the generator, and is used to compare the generator load three-phase current signal with the set Values are compared, and the comparison result signal is sent to the load shedding logic judging unit 30 as one of the judging criteria for whether the generator is running normally.
[0051] The generator load three-phase current signal comparison unit 10 includes: a generator curr...
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The invention discloses a TRT (Top Gas Pressure Recovery Turbine) unit over-speed control system and a TRT unit over-speed control method. A generator load three-phase current signal comparison unit is used for receiving a generator load three-phase current signal, comparing the generator load three-phase current signal with a comparison set value, and sending a comparison result used as a generator outgoing line current signal to a load shedding logical judgment unit; a network interconnecting circuit breaker position signal input unit is used for receiving a generator network interconnecting circuit breaker position signal, and sending the generator network interconnecting circuit breaker position signal to the load shedding logical judgment unit; the load shedding logical judgment unit is used for comparing the generator network interconnecting circuit breaker position signal with the generator outgoing line current signal, and sending an action signal to a turbine control system when an action condition is met; the turbine control system is used for triggering a turbine emergency governor oil channel after receiving the action signal, and driving a turbine quick switching valve to act; the turbine quick switching valve is used for switching turbine coal gas sources. The invention also discloses the TRT unit over-speed control method.
Description
technical field [0001] The invention relates to a gas turbine control technology, in particular to an overspeed control system and an overspeed control method for a TRT unit. Background technique [0002] Blast furnace gas turbine residual pressure power generation system (TRT for short) is an energy recovery device that uses the pressure energy and heat energy generated by blast furnace gas to expand and do work through a turbine to drive a generator to generate electricity. The generator runs in parallel with the 10.5KV system of the superior substation through the tie circuit breaker. When the TRT is running, the generator transmits electric energy to the grid. [0003] At present, the TRT system has the following problems: [0004] TRT turbine generator sets are generally grid-connected to the 10.5KV system bus, and connected to the industrial power grid through the substation. The 10.5KV grid is the power transformer network of metallurgical enterprises, with a high fa...
Claims
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IPC IPC(8): F02C9/28
Inventor 徐福雄李跃彬张晓玉冯东升
Owner INNER MONGOLIA BAOTOU STEEL UNION