Method for controlling and optimizing performance heater

Abstract

The invention provides a method for controlling and optimizing a performance heater, comprising the following logic steps: (1) canceling interlock when an open feedback signal and a closed feedback signal of a valve are invalid at the same time, and keeping the state of the valve to be unchanged; (2) delaying time for 1-5s when the interlock condition is valid, executing the interlock when the interlock condition is still valid, and canceling the interlock when the interlock condition is invalid; and (3) when a switch of a generator is switched on, judging the temperature of a fuel outlet, putting the performance heater into operation when the temperature of the fuel outlet is higher than or equal to 120 DEG C, and preheating for 5min and putting the performance heater into operation whenthe temperature of the fuel outlet is lower than 120 DEG C. The invention improves the stability and economy of the operation of a generator set of a steam turbine engine.

Description

technical field [0001] The invention relates to performance heater technology, in particular to a control method for a performance heater. Background technique [0002] The gas turbine performance heater is an important auxiliary equipment used to heat the fuel (natural gas) at the inlet of the gas turbine to ensure that the internal combustion of the gas turbine is in good condition. [0003] In the prior art, the sequence control working conditions of putting into the performance heater 1 are as follows: open the primary water inlet valve A and the secondary water inlet valve C of the gas turbine performance heater, close the water inlet and discharge valve B, and open the primary water outlet valve after 5 minutes D. The secondary water outlet valve F, close the water outlet discharge valve E, and open the regulating valve G. [0004] In the prior art, the sequential control working conditions of the outage performance heater are as follows: close the primary water inlet...

AI Technical Summary

Problems solved by technology

[0010] The disadvantages of the prior art are: when the valve is working normally, the abnormal valve state feedback signal will cause the performance heater to trip by mistake and exit the operation; The performance heater is normally put into operation; when it is in a hot state, it is not allowed to be put into use in time; when the gas turbine unit is started and the load is low, the performance heater cannot be put into operation in a timely manner, which prolongs the increase of the gas turbine load and the boiler main and reheat steam. Boost time

[0011] The above four results may cause the performance heater to be out of operation by mistake, or the performance heater cannot be put into operation in time, so that the temperature of the natural gas at the inlet of the gas turbine will drop, which will directly lead to a rapid drop in the load of the gas turbine, unstable operation of the gas turbine generator set, and a decrease in efficiency

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