Method for power regulation of a steam generator for generating electricity and/or heating
A technology of steam generator and power regulation, applied in the direction of combustion method, indirect heat exchanger, heat exchanger type, etc., can solve the problems of fresh steam temperature and reheater temperature drop, efficiency loss, power drop, etc.
Active Publication Date: 2017-11-03
RWE POWER AKTIENGESELSCHAFT
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Problems solved by technology
[0013] Finally, the use of water and steam usually results in a drop in fresh steam temperature and reheater temperature, which in turn produces power drop and efficiency loss
Method used
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[0078] When referring to gross generator power and net generator power in the following, then by gross generator power is meant the electrical power available as electrical power at the terminals of the generator. The net generator power is the power actually fed into an electrical grid. The difference between the net generator power and the gross generator power is the power which is branched before the electricity grid in order to operate the steam generator itself. Generally, the steam generator is regulated by means of a gross generator output based on available data, wherein the net generator output can be derived.
[0079] The rated power of the steam generator is the electrical rated power for which the steam generator is provided. The maximum possible electrical power is the power that the steam generator can actually deliver as a function of the external or ambient temperature and the quality of the fuel and the efficiency of the heating surface.
[0080] If the hea...
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The invention relates to a method for power regulation of a steam generator for generating electricity and / or heating, taking into account the use of a cleaning device operated with steam and / or water during operation of the steam generator. The method includes monitoring state variables of the steam generator which allow an indirect or direct derivation of the efficiency and / or the pollution state of the heating surface of the steam generator. The method also includes: establishing an efficiency forecast by means of the measured and / or determined state variables; establishing a load forecast as a function of current demand and / or heat demand for the steam generator(s); as an availability forecast and as an ambient temperature and / or fuel quality to establish a forecast for the expected maximum power available to the steam generator or steam generators; and to determine the optimal purge time point as a function of the efficiency forecast, wherein, depending on the load forecast and the availability forecast in the following conditions Postpone or suppress and / or shorten or prolong and / or intensify or weaken the nominal purification process to be introduced according to the efficiency prediction, i.e. not lower than the predetermined minimum efficiency of the heating surface of the steam generator and / or not higher than the predetermined minimum efficiency of the heating surface the maximum allowable pollution.
Description
technical field [0001] The invention relates to a method for power regulation of a steam generator for generating electricity and / or heating, preferably at a steam generator comprising a plurality of boilers heated with fossil or organic fuels, More precisely, taking into account the use of a steam- and / or water-operated cleaning device for the heating surface of the steam generator during operation of the steam generator. [0002] The method according to the invention for power regulation of these steam generators also includes power regulation at the steam generators with ignition devices for waste combustion, waste co-firing and waste combustion. [0003] The method according to the invention for power regulation of steam generators includes in particular power regulation at steam generators which are usually operated in the range of maximum power. Background technique [0004] This highest continuous electrical power (or this thermal power in heat generators) of a steam...
Claims
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IPC IPC(8): F22B37/56F23J3/02F28G15/00
CPCF22B37/56F23J3/023F28D1/05366F28D2021/0094F28F2225/08F28G15/003
Inventor H·霍夫曼U·舒尔策
Owner RWE POWER AKTIENGESELSCHAFT