Testing device and method for function verification of nuclear power station steam turbine regulation security system

Abstract

The invention discloses a testing device and method for function verification of a nuclear power station steam turbine regulation security system. The testing device comprises a control oil tank, a cooling oil pump, an electric heater inlet valve, an electric heater, an electric heater outlet valve, an oil cooler inlet valve, an oil cooler, an oil cooler outlet valve, a first control oil pump, a second control oil pump, an emergency trip device and a steam turbine steam inlet valve group. An oil temperature monitoring device, an oil pressure monitoring device and an oil level monitoring device are arranged in the control oil tank; the steam turbine steam inlet valve group is composed of a steam turbine main steam valve and an adjusting valve. Each steam turbine regulation security system is connected with a simulation modeling server through the steam turbine regulation security system DCS cabinet via a PXI data acquisition cabinet. According to the invention, the actual function of the steam turbine regulation security system can be verified in advance, and the test efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and in particular relates to a test device and method for function verification of a steam turbine regulation and security system of a nuclear power plant. Background technique [0002] The steam turbine regulating and security system of the nuclear power plant is the main control system of the secondary circuit of the nuclear power plant. During the operation of the steam turbine, the system supplies control oil to the main steam valve and regulating steam valve of the steam turbine and controls the valve opening of the steam turbine. [0003] The regulation and security system of steam turbine in nuclear power plant is composed of control oil tank, cooling oil pump, control oil pump, steam turbine inlet valve group and pipelines. In order to ensure the safe and stable operation of the nuclear power plant, the functional verification of the control logic of the steam turbine regulation and...

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Problems solved by technology

This test method has at least the following problems: when the operating conditions of the steam turbine regulation and security system are complex and there are many measurements, the above manual test method has the disadvantages of reading errors and many errors in the test results, and the test efficiency is low; at the same time During the test, the DCS logic needs to be modified to simulate various operating states of the system. Since the steam turbine regulation and security system involves the whole process of operating conditions during the unit start, stop and power operation stages, the scope of the DCS logic involved is relatively wide, and the test process directly Modifying the DCS logic will bring hidden dangers to the subsequent stable operation of the unit, and the applicability of the above test methods is poor

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