Method for correcting designed heat supply working condition diagram of thermoelectric unit

Abstract

The invention discloses a method for correcting a designed heat supply working condition diagram of a thermoelectric unit, which comprises the following steps of: starting from real historical operation data of the unit, selecting an actual operation working condition which breaks through an operation interval of the designed heat supply working condition diagram, and carrying out correcting by utilizing the working condition in an original designed heat supply working condition diagram, so as to greatly expand an output interval of the unit in a heat supply state; correcting a unit heat supply working condition diagram by utilizing the unit real operation data. On one hand, the output condition of the thermoelectric unit in the heat supply state can be reflected more accurately, references are provided for operators, on the other hand, the operation interval of the unit is widened, the low-load capacity of the unit is excavated and improved, the unit can participate in auxiliary services more to obtain peak regulation compensation benefits, and meanwhile new energy consumption is promoted.

Description

technical field [0001] The invention relates to a method for correcting a heat supply working diagram of a thermoelectric unit design, and belongs to the technical field of thermoelectric unit design. Background technique [0002] A thermoelectric unit refers to a unit that not only generates electricity but also supplies heat. Thermal power units usually use steam turbines. While the steam turbines generate electricity, they also use steam extraction or exhaust steam from the steam turbines for heat supply. [0003] The design heat supply diagram of the thermal power unit is in the form of a curve to show the relationship between the unit’s main steam flow, electric power, heat load and other parameters that have an impact on the economy of the unit. Using the design heat supply diagram of the unit, the steam turbine can be queried The output range under the external heating state is easy to use and has sufficient accuracy in practical engineering applications. Therefore, ...

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Problems solved by technology

[0004] The design heating condition diagram of the thermal power unit is provided by the steam turbine manufacturer, which is calculated according to the design parameters of the unit using variable working conditions, but for the protection of the steam turbine , Figure 1 general heating conditions given by the manufacturer It is relatively conservative. In addition, there is a large gap between the actual operating parameters of the unit and the design parameters. Therefore, in the actual operation of the unit, there will often be operating conditions that break through the design heating operation diagram. Therefore, it is necessary to correct the design heating operation diagram. , which is closer to the actual operation of the unit

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