Nuclear power station thermal energy efficiency monitoring and diagnosing system and method

Abstract

The invention provides a nuclear power station thermal energy efficiency monitoring and diagnosing system and method. The monitoring and diagnosing system comprises a storage module, a data acquisition module, a core calculation module, and a diagnosis module. The data acquisition module is used for obtaining nuclear power station secondary circuit basic parameters measured by a monitoring system instrument and process parameters of a distributed control system; the core calculation module is used for calculating measured values of thermal power performance parameters of the nuclear power station secondary circuit, wherein an energy efficiency calculation model of the nuclear power unit is established on the basis of an energy efficiency distribution matrix equation established for the nuclear power station secondary circuit, and the unit specific heat consumption of the nuclear power station secondary circuit is calculated; the diagnosis module is used for determining whether the thermal power performance parameters are abnormal or not by comparing the measured values of thermal power performance parameters of the nuclear power station secondary circuit with operational reference values. According to the system and method, an energy efficiency distribution matrix equation is established for the nuclear power station secondary circuit; indexes such as unit specific heat consumption are obtained through establishing the energy efficiency calculation mode; and therefore a set of thermal energy efficiency monitoring index system is developed for a nuclear power station.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a system and method for monitoring and diagnosing thermal energy efficiency of a nuclear power plant. Background technique [0002] At present, the nuclear power units built in batches in China are generally large units of one million kilowatts and above, and they are the main units in the power grid that undertake base-load operation. Due to changes in external environmental conditions and internal equipment operating conditions, the thermal efficiency of nuclear power units may decrease and the units may not be able to run at full capacity. However, the large capacity of nuclear power units makes the loss of power generation due to the decrease in unit efficiency more significant. [0003] At present, there is only an online monitoring and diagnosis system for the thermal system of thermal power units in China. The online monitoring and diagnosis system of the thermal s...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a system and method for monitoring and diagnosing the thermal energy efficiency of nuclear power plants to establish energy efficiency calculations suitable for nuclear power plants in view of the defect that the thermal energy efficiency monitoring and diagnosis system of the existing thermal power units is not suitable for nuclear power units Models and Diagnostic Methods

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