A peak-shaving control method for a high-voltage electrode boiler system
A technology of high-voltage electrodes and control methods, applied in control systems, steam generation, lighting and heating equipment, etc., can solve the problems of unable to meet the peak-shaving quality requirements of power dispatching departments, overall efficiency decline, and solid thermal storage materials are not environmentally friendly. To achieve the effect of quick response, good participation in deep peak shaving, and reasonable deployment
Active Publication Date: 2019-09-24
徐州泰旭智慧能源有限公司
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Problems solved by technology
Due to their own inherent reasons, the peak-shaving characteristics of the two have the possibility of often failing to meet the peak-shaving quality requirements of the power dispatching department, and there are unfavorable problems such as the overall efficiency of the system will decrease after long-term operation, and the solid heat storage material is not environmentally friendly.
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Embodiment 1
[0033] Example 1: Ten sets of 40MW electric boilers and a small heat storage system with a hot water heat storage system capacity of about 196MWh are used in the high voltage electrode boiler system of a power plant. These 10 boilers are allocated to 3 western network users, 5 northern network users, and 2 southern network users, and the limited level of electric boilers is set. The heat storage system is used to balance the short-term imbalance between the heat release of the electric boiler system and the heat consumption of the heating network, so as to achieve the purpose of flexible operation and better participation in deep peak regulation.
[0034] Each group of electrode boilers is individually equipped with a PID controller to adjust the power and return water temperature respectively, and the outlet water temperature is used as a boiler safety warning.
[0035] In order to make the electric boiler play a better role in deep peak regulation, the peak regulation contro...
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The invention discloses a peak-shaving control method of a high-pressure electrode boiler system. The peak-shaving control method comprises the steps that when a starting command and the peak-shavingpower given by a DCS are received, self-test is conducted first, if a boiler has a breakdown, the breakdown is reported to the DCS, meanwhile, the power of the boiler having the breakdown is subtracted from the total power of a heat network, and the electric boiler is ready to be started; after the boiler is started, the change of the peak-shaving load given by the DCS needs to be monitored at anytime, and if the change occurs, the power is distributed again; if no change occurs, the electrode boiler runs according to the original distribution amount; at the same time, a command that whethera heat storage tank needs to store heat or not also needs to be received at any time, and the heat network is balanced by matching the DCS; and when a peak-shaving stopping command is received, the electrode boiler stops running according to the preset stopping steps, and meanwhile, a control command of the heat storage tank is received at any time and used for heat network coupling when the electrode boiler stops running. According to the peak-shaving control method of the high-pressure electrode boiler system, short-time unbalance of heat releasing of the electrode boiler system and heat used by the heat network is balanced through the heat storage tank, so that the purposes of flexible running and better participating in deep peak shaving are achieved.
Description
technical field [0001] The invention relates to a power distribution method of a high-voltage electrode boiler system, in particular to a power distribution method of multiple groups of high-voltage electrode boiler systems in a power grid peak regulation heating system. Background technique [0002] At present, the main technical routes for the flexibility transformation of heating units mainly include the transformation technology of steam extraction and heat storage of steam turbines and the use of electric heat storage boilers for peak regulation. The existing technical routes for peak shaving of electric heat storage boilers mainly include heat storage electrode boilers and lava heat storage devices. Regenerative electrode boilers mainly use solid heat storage. It adopts high-voltage solid heat storage technology and is composed of high-voltage electric heating element, high-temperature energy storage body, high-temperature heat exchanger, heat output controller, high-...
Claims
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IPC IPC(8): F22B35/00
Inventor 赵晓燕安建利
Owner 徐州泰旭智慧能源有限公司