Black start method for gas turbine power plant
A black-start, electromechanical power plant technology, applied in the direction of gas turbine installations, machines/engines, engine starting, etc., can solve the problems of inability to accurately find the short-circuit position, reduce maintenance efficiency, and increase time, so as to improve the inspection efficiency, and the system is stable and reliable. , to achieve the effect of security
Pending Publication Date: 2021-11-26
华能南京燃机发电有限公司
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Problems solved by technology
[0003] In the case of intense competition in the power market, the black start system is becoming more and more perfect, but there will still be failures in the connection of some lines during the black start step, but in the short circuit, due to the power outage, workers cannot accurately Find the short-circuit location for line repair process. If a single node is probed, it will take a lot of time and reduce the maintenance efficiency
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[0067] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0068] refer to figure 1 , a black start method for a gas turbine power plant, comprising:
[0069] The gas turbine start-up system receives the gas turbine throwing car signal and transmits the signal to the subsystems at all levels, and the subsystems at all levels receive the gas turbine throwing car signal to perform self-inspection and pre-start procedures;
[0070] The start-up system of the gas turbine sends out the start-up control signals of the subsystems when a power failure occurs, and the subsystems at all levels receive the start-up signals and perform start-up operation, ignition and grid connection procedures. During the process, the subsystems feed b...
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The invention discloses a black start method for a gas turbine power plant. The method comprises the steps that a gas turbine starting system receives a gas turbine barring throwing signal and transmits the signal to each stage of subsystem, each stage of subsystem receives the gas turbine barring throwing signal to carry out self-checking and pre-starting processes, and the gas turbine starting system sends out a starting control signal of the subsystem when power failure occurs; the subsystems at all levels receive starting signals and conduct starting operation, ignition and grid connection procedures, and in the procedure proceeding process, the subsystems feed back rotating speed signals to the gas turbine starting system. By adopting the starting scheme of the 2000kW diesel generating set and the frequency converter, the system is simple, fault points are few, the safety, reliability and economic applicability of the circuit are realized by utilizing the change of the motor, and in addition, by utilizing the thermal induction effect of the circuit, according to the condition that the temperature rises when the short-circuit end of the short-circuit circuit is powered on, an abnormal detection point is determined and troubleshooting is carried out, and the troubleshooting efficiency when a short-circuit fault occurs is improved.
Description
technical field [0001] The invention relates to the technical field of black start of power plants, in particular to a method for black start of a gas turbine power plant. Background technique [0002] With the research and practice of the power market, the importance of power system auxiliary services to system security has attracted more and more attention. When the power system is running, the most serious failure that may occur is that the system stops completely. Power outages will have a certain impact on society or factories. Several major blackouts in the world in recent years remind us to study the recovery problem after power system accidents, that is, the problem of black start service has important theoretical and practical significance. The so-called The black start service of the power grid refers to: after the entire system is out of service due to a fault, the units with self-starting capabilities in the system can be started without relying on the help of ot...
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IPC IPC(8): H02J3/38F02C9/00F02C7/26
CPCH02J3/38F02C9/00F02C7/26H02J2300/10
Inventor 杨军王开柱朱静于海洋周建于雯龙黄庆吴渊恒
Owner 华能南京燃机发电有限公司