An online monitoring method for peak regulation capacity of thermal power units

Abstract

The invention discloses an online monitoring method for peak load regulation capability of a thermoelectric generator unit, and belongs to the technical field of online monitoring of the peak load regulation capability of the thermoelectric generator unit. The method comprises uploading real-time data in the DCS system of a monitored thermoelectric generator unit to a main monitoring device; thensearching for groups of heat supply steam extraction amount and corresponding maximum power or minimum power by using a designed heat supply operating condition map of the monitored thermoelectric generator unit; by using an actual calculation database in the main monitoring device, calculating the maximum power or minimum power of the monitored thermoelectric generator unit under the real-time heat supply steam extraction amounts at a background in real time, and outputting the same to a human-machine interface in order to provide a reference for a grid scheduler and provide reliable data support for the rational scheduling of the grid. The method can monitor the peak load regulation upper limit and the peak load regulation lower limit of the thermoelectric generator unit under differentreal-time heat supply steam extraction amounts in a heat supply season in real time, and provides important data support for a grid scheduling department to scientifically and rationally formulate theload scheduling curve of the thermoelectric generator unit.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring of the peak-shaving capability of a thermoelectric unit, in particular to an on-line monitoring method for the peak-shaving capability of a thermoelectric unit. Background technique [0002] With economic and social development, industrial structure adjustment, the proportion of industrial electricity consumption decreases, the proportion of municipal and commercial electricity consumption increases, the peak-to-valley difference of the power grid increases, and the demand for peak regulation of the power grid increases. At the same time, the pressure on environmental protection is increasing day by day. The country has intensified efforts to develop new energy power generation, but new energy units are developing too fast in some areas. Due to the particularity of new energy unit power generation, especially wind power generation, the output of wind power fluctuates continuously within ...

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Problems solved by technology

[0002] With economic and social development, industrial structure adjustment, the proportion of industrial electricity consumption decreases, the proportion of municipal and commercial electricity consumption increases, the peak-to-valley difference of the power grid increases, and the demand for peak regulation of the power grid increases. At the same time, the pressure on environmental protection is increasing day by day. The country has intensified efforts to develop new energy power generation, but new energy units are developing too fast in some areas. Due to the particularity of new energy unit power generation, especially wind power generation, the output of wind power fluctuates continuously within a certain range during the day, and the output of wind power at night begins to gradually increase. The "anti-peak-shaving characteristics" with the highest average output in winter and the lowest average output in summer bring greater challenges to power grid peak regulation

[0003] At present, the peak regulation of the power grid mainly relies on thermal power units. In northern China, the proportion of thermal power units accounts for more than 50%. In the heating season, the units should give priority to meeting the heat load demand. The capacity is greatly reduced. In the past, thermal power units seldom participated in peak regulation. However, with the large number of new energy sources connected to the grid, the demand for peak regulation in the power grid continues to increase. Simply relying on pure condensing units for peak regulation can no longer meet the demand, and thermal power units must also participate in peak regulation.

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