Method for monitoring axial power distribution of reactor in nuclear power station
A technology for axial power distribution, nuclear power plant reactors, applied in the field of nuclear power
Active Publication Date: 2014-06-18
中广核工程有限公司 +1
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[0003] The technical problem to be solved by the present invention is to provide a systematic and complete monitoring method for the axial power distribution of the reactor, based on the fact that there is no complete solution for effectively monitoring the axial power distribution of the reactor in the prior art. The axial power distribution signal obtained by this monitoring method can further provide display and alarm
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[0037] In order to make the object, technical solution and effect of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following examples are only used to explain the present invention, but not to limit the present invention.
[0038] The monitoring method of nuclear power plant reactor axial power distribution provided by the present invention is as follows: figure 1 shown. The method includes the following steps:
[0039] Step S11, collecting system signals of the nuclear instrumentation system (RPN), the rod control and rod level system (RGL) and the reactor coolant system (RCP). This step performs signal acquisition within one processing cycle.
[0040] Step S12 , acquiring relevant core parameters, such as reference axial power deviation, axial power deviation at 100% NP, and the like. The required core parameters are de...
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The invention discloses a method for monitoring the axial power distribution of a reactor in a nuclear power station. The method comprises the following steps: acquiring system signals of a nuclear instrument system, a rod control and rod position system and a reactor coolant system, obtaining core parameters, determining the operation area based on the system signals and the core parameters, acquiring core operation points, and determining the real time states of the core operation points in the operation area to monitor the axial power distribution of the reactor in the nuclear power station. The power distribution signal reflecting the operation states of the cores of the reactor can be obtained by calculating the acquired system signals and the core parameters of the reactor through the method. The monitoring method simultaneously takes thermal power, LOCA margin and the operation area into account, provides reliable bases for alarm and subsequent operations, is systemic and complete, and is in favor of maintaining the set safety.
Description
technical field [0001] The invention belongs to the technical field of nuclear power. More specifically, the present invention relates to a method for monitoring the axial power distribution of a nuclear power plant reactor. Background technique [0002] In a pressurized water reactor nuclear power plant, the reactivity of the core is usually adjusted by changing the position of the control rods in the reactor and adjusting the concentration of boron in the moderator to achieve the purpose of starting, shutting down the reactor and changing the power of the reactor. Under the condition of no rods, the axial power distribution of PWR is cosine distribution, and the radial power distribution is Bessel function distribution. Radial power distribution can be flattened by arranging fuel in different concentration zones, radially symmetrical arrangement of burnable poison rods and control rods, optimal control rod grouping and lifting / inserting program design measures, it does no...
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IPC IPC(8): G21C17/00
CPCY02E30/30
Inventor 李恒周卫华田亚杰彭锦
Owner 中广核工程有限公司