CN113721480B - Nuclear power plant diversified protection signal simulation method and system - Google Patents
Nuclear power plant diversified protection signal simulation method and system Download PDFInfo
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- CN113721480B CN113721480B CN202110930344.2A CN202110930344A CN113721480B CN 113721480 B CN113721480 B CN 113721480B CN 202110930344 A CN202110930344 A CN 202110930344A CN 113721480 B CN113721480 B CN 113721480B
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Abstract
The invention provides a method and a system for simulating diversified protection signals of a nuclear power plant, wherein the method comprises the following steps: acquiring the type of the protection signal; when the type is a switching value signal, a shorting wire is used for shorting the signal inlet terminal to realize the connection in the analog simulation switching value signal, and the signal inlet terminal is isolated to realize the disconnection in the analog simulation switching value signal; when the type is passive analog quantity signals, an adjustable resistor is connected to a signal inlet terminal of the passive analog quantity conditioning distribution card, and the passive analog quantity signal simulation is realized by adjusting the resistance value; when the type is active analog quantity signals, an adjustable resistor is connected to a signal inlet terminal of the passive analog quantity conditioning distribution card, a standby terminal current output signal of the passive analog quantity conditioning distribution card is led to an input end of the active analog quantity conditioning distribution card through a short-circuit wire, and analog simulation of the active analog quantity signals is realized by adjusting the resistance. The nuclear power plant diversified protection signal simulation method is simple and efficient, low in cost and high in reliability.
Description
Technical Field
The invention relates to the technical field of nuclear power plant debugging, in particular to a nuclear power plant diversified protection signal simulation method and system.
Background
The function of the nuclear power plant reactor protection system is to protect the integrity of the three safety barriers (i.e., fuel cladding, primary circuit pressure boundary and containment) of the nuclear power plant, and the comprehensive verification of the protection function is critical to the safe operation of the nuclear power plant. In the test verification process of the full-period reactor protection system, the method comprises a monomer debugging stage, a reactor protection operation stage during a unit thermal state function test, a nuclear power station instrument of a unit thermal state function test thermal shutdown platform and a control power supply power failure test (COC) stage, wherein input signals of the reactor protection system are required to be available or simulated to be available. The input signals are numerous and various in types, and comprise analog quantity signals, switching value signals, active signals, passive signals and the like.
In the debugging stage of the nuclear power plant, because the handover and debugging of a plurality of process systems are late, the nuclear power plant is influenced by the installation of local meters, cable termination and other transfer and delivery items, a large number of input signals to the reactor protection system are not available, and the functional test of the reactor protection system is restricted. Therefore, the unavailable protection input signals need to be screened in advance, and analog simulation is performed on the unavailable protection input signals.
One of the existing diversified protection input signal simulation methods is a pure software collocation signal generator implementation mode. In the full-cycle debugging phase, signals are simulated at values required for the test by signal forcing using a Digital Control System (DCS) specific software tool for unavailable input signals. During the COC power-down test, the signals forced by the software disappear after the DCS cabinet is powered down, and aiming at the unavailable analog input signals, the signals are continuously simulated by using a signal generator, so that the continuous analog signal simulation input of the cabinet before and after the power-down is ensured, and the requirement of the COC power-down test signal state inspection is met. The simulation method for the diversified protection input signals realized by the pure software matched with the signal generator has the following defects: in the full-period debugging stage, a plurality of signal forcing points are added in a DCS system special software tool, the workload is high, the signal forcing and forced operation canceling are required to be frequently carried out, and the risks of false triggering of a protection function caused by failure of operation errors, unexpected power failure of a DCS cabinet and the like in the process are high. During the COC power-down test, because the on-site instrument sends more unavailable signals to the DCS cabinet, and the number of signal generators is limited, the COC power-down test system does not have the condition of simulating a large number of instrument signals at the same time, and cannot meet the requirements of the COC power-down test.
The second existing diversified protection input signal simulation method is an external simulation platform implementation mode. The simulation platform is formed by constructing a special simulation computer, a simulation cabinet, an external power supply, a simulation signal cable, a network cable and the like, and the simulation cabinet is connected with the DCS cabinet through a large number of simulation signal cables. After the simulation platform is built, under the condition that the communication between the simulation cabinet and the DCS cabinet is normal, a special simulation computer is used for carrying out simulation on required input signals, and the test requirement is met. The method for realizing the simulation of the diversified protection input signals by the external simulation platform has the following defects: the simulation platform is built by laying and connecting a large number of simulation signal cables, so that the workload is large, the construction period is long, and the required labor cost and maintenance cost are high. The simulation cabinet needs to be powered by an external power supply to ensure the continuous operation of the simulation platform, if the external power supply is powered off, the simulation signal simulated by the simulation platform disappears, the reactor protection signal is triggered by mistake, and the misoperation of downstream process equipment is caused. The simulation platform implementation mode has great dependence on the stability and reliability of an external power supply.
The existing pure software is matched with a signal generator analog simulation mode, the forced workload of signals is large, the risk of human failure is high, and in specific stages such as COC power failure tests, a plurality of signal generators are needed to be used for simulation, so that constraint conditions are more. The existing external simulation platform implementation mode has the defects of large workload, long construction period, high required labor cost and maintenance cost, and large dependence on the stability and reliability of an external power supply. Both existing analog simulation techniques have obvious drawbacks and limitations.
How to provide a simple, efficient and reliable nuclear power plant diversified protection signal simulation method is a problem to be solved currently.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a method and a system for simulating diversified protection signals of a nuclear power plant, which are used for solving the defects in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the embodiment of the invention provides a nuclear power plant diversified protection signal simulation method, which comprises the following steps:
obtaining a type of protection signal, wherein the type of protection signal comprises: switching value signals, passive analog value signals and active analog value signals;
when the type of the obtained protection signal is a switching value signal, a signal inlet terminal is short-circuited by a short-circuited wire to realize the connection in the analog simulation switching value signal; isolating the signal inlet terminal to realize the disconnection in the analog simulation switching value signal;
when the type of the obtained protection signal is a passive analog signal, an adjustable resistor is connected to a signal inlet terminal of the KCS cabinet passive analog conditioning distribution card, and the passive analog signal simulation is realized by adjusting the resistance value of the adjustable resistor;
when the type of the obtained protection signal is an active analog signal, an adjustable resistor is connected to a signal inlet terminal of the KCS cabinet passive analog conditioning distribution card, a standby terminal current output signal of the KCS cabinet passive analog conditioning distribution card is led to an input end of the active analog conditioning distribution card through a short wire, and the analog simulation of the active analog signal is realized by adjusting the resistance value of the adjustable resistor.
Further, the passive analog quantity conditioning distribution card is a SABK01C board card; the SABK01C board card is used for collecting input passive 0-24 mA current signals, a 24V power supply is provided inside the board card, after signal conditioning and isolation, 4 paths of standard 0-24 mA current signals are output to realize input and output isolation, and all outputs are mutually isolated.
Further, the active analog quantity conditioning distribution card is a SABK01A board card; the SABK01A board card is used for collecting input active 0-24 mA current signals, outputting 4 paths of standard 0-24 mA current signals after signal conditioning and isolation to realize input and output isolation, and the outputs are isolated from each other.
Further, the switching value signal is a passive signal, and the digital quantity input board card of the KCS cabinet provides 24V power.
Further, for the passive analog quantity signal, the passive analog quantity conditioning distribution card provides power, and for the main feedwater flow measuring transmitter ARE049MD, the simulation method specifically comprises the following steps: and removing an external cable of the main water supply flow measurement transmitter ARE049MD at an inlet terminal of the KCS cabinet, accessing the adjustable resistor, and adjusting the resistance value of the adjustable resistor to enable the current value of an input signal of the main water supply flow measurement transmitter ARE049MD to be 4mA so as to achieve the simulation purpose that the flow of the main water supply flow measurement transmitter ARE049MD is 0.
Further, for the active analog signal, the original instrument body provides power, and for the nuclear power range probe power signal RPN010MA-PR, the simulation method specifically comprises the following steps: removing external cables of the main water supply flow measuring transmitter ARE049MD and the nuclear power range probe power signal RPN010MA-PR at an inlet terminal of a KCS cabinet, connecting the main water supply flow measuring transmitter ARE049MD to the adjustable resistor at the KCS cabinet terminal, adjusting the resistance value of the adjustable resistor to enable the current value of the main water supply flow measuring transmitter ARE049MD input signal to be 4mA, and leading the 4mA current signal output by the main water supply flow measuring transmitter ARE049MD passive analog quantity conditioning distribution card spare terminal to the input end of the nuclear power range probe power signal RPN010MA-PR active analog quantity conditioning distribution card through a short-circuit wire to realize the simulation display of the lower limit of the nuclear power range probe power signal PN010MA-PR range.
The embodiment of the invention also provides a nuclear power plant diversified protection signal simulation system, which comprises:
an active analog quantity conditioning distribution card, a passive analog quantity conditioning distribution card, an adjustable resistor and a shorting bar;
the adjustable resistor is used for being connected with a signal inlet terminal of the passive analog quantity conditioning distribution card to replace an original passive analog quantity signal instrument; the shorting stub is used for connecting a standby terminal current output signal of the passive analog quantity conditioning distribution card with an input end of the active analog quantity conditioning distribution card;
types of diversified protection signals for a nuclear power plant include: switching value signals, passive analog value signals and active analog value signals;
when the type of the obtained protection signal is a switching value signal, the shorting wire is used for shorting the signal inlet terminal to realize the connection in the analog simulation switching value signal; isolating the signal inlet terminal to realize the disconnection in the analog simulation switching value signal;
when the type of the obtained protection signal is a passive analog signal, the passive analog signal simulation is realized by adjusting the resistance value of the adjustable resistor connected at the signal inlet terminal of the passive analog conditioning distribution card;
when the type of the obtained protection signal is an active analog quantity signal, the resistance value of the adjustable resistor connected at the signal inlet terminal of the passive analog quantity conditioning distribution card is adjusted, and then the standby terminal current output signal of the passive analog quantity conditioning distribution card is led to the input end of the active analog quantity conditioning distribution card through the shorting bar, so that the analog simulation of the active analog quantity signal is realized.
Further, the passive analog quantity conditioning distribution card is a SABK01C board card; the SABK01C board card is used for collecting input passive 0-24 mA current signals, a 24V power supply is provided inside the board card, after signal conditioning and isolation, 4 paths of standard 0-24 mA current signals are output to realize input and output isolation, and all outputs are mutually isolated.
Further, the active analog quantity conditioning distribution card is a SABK01A board card; the SABK01A board card is used for collecting input active 0-24 mA current signals, outputting 4 paths of standard 0-24 mA current signals after signal conditioning and isolation to realize input and output isolation, and the outputs are isolated from each other.
Further, the switching value signal is a passive signal, and the digital quantity input board card of the KCS cabinet provides 24V power.
Further, for the passive analog quantity signal, the passive analog quantity conditioning distribution card provides power, and for the main feedwater flow measuring transmitter ARE049MD, the simulation method specifically comprises the following steps: and removing an external cable of the main water supply flow measurement transmitter ARE049MD at an inlet terminal of the KCS cabinet, accessing the adjustable resistor, and adjusting the resistance value of the adjustable resistor to enable the current value of an input signal of the main water supply flow measurement transmitter ARE049MD to be 4mA so as to achieve the simulation purpose that the flow of the main water supply flow measurement transmitter ARE049MD is 0.
Further, for the active analog signal, the original instrument body provides power, and for the nuclear power range probe power signal RPN010MA-PR, the simulation method specifically comprises the following steps: removing external cables of the main water supply flow measuring transmitter ARE049MD and the nuclear power range probe power signal RPN010MA-PR at an inlet terminal of a KCS cabinet, connecting the main water supply flow measuring transmitter ARE049MD to the adjustable resistor at the KCS cabinet terminal, adjusting the resistance value of the adjustable resistor to enable the current value of the main water supply flow measuring transmitter ARE049MD input signal to be 4mA, and leading the 4mA current signal output by the main water supply flow measuring transmitter ARE049MD passive analog quantity conditioning distribution card spare terminal to the input end of the nuclear power range probe power signal RPN010MA-PR active analog quantity conditioning distribution card through a short-circuit wire to realize the simulation display of the lower limit of the nuclear power range probe power signal PN010MA-PR range.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a self-simulation method which is matched with an adjustable resistor by means of a DCS inherent conditioning distribution card, and realizes simulation of diversified input signals of a reactor protection system. The method has the advantages that software forcing is not needed for the input signals, the problem of large workload caused by numerous forced software signals is solved, potential safety hazards caused by disappearance of the forced software signals and manual forced misoperation in the processes of powering on and powering off the cabinet are avoided, and the risk of human-caused failure is reduced; when the COC power-off test is performed, a signal generator is not needed, and the problem that the number of the signal generators is insufficient due to the fact that the COC power-off test is matched is solved. The simulation platform is not required to be set up, the problems of large workload, long construction period and the like caused by laying and terminating a large number of simulation cables are solved, and the cost and the construction period are saved; the external power supply is not needed, the problem that the simulation signal is easily influenced by the reliability of the external power supply due to the external simulation platform mode is solved, and the reliability of the simulation signal is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for simulating diversified protection signals of a nuclear power plant according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the connection of a passive analog signal meter to a board card;
FIG. 3 is a schematic diagram of the connection of an active analog signal meter to a board card;
FIG. 4 is a schematic diagram of a connection of passive analog signal simulation;
fig. 5 is a schematic connection diagram of an active analog signal simulation.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the embodiment of the invention provides a method for simulating a diversified protection signal of a nuclear power plant, which comprises the following steps:
s101, acquiring types of protection signals, wherein the types of the protection signals comprise: switching value signal, passive analog value signal and active analog value signal.
S102, when the type of the acquired protection signal is a switching value signal, a signal inlet terminal is short-circuited by a short-circuited wire to realize the connection in the analog simulation switching value signal; isolating the signal inlet terminal to realize the disconnection in the analog simulation switching value signal; when the type of the obtained protection signal is a passive analog signal, an adjustable resistor is connected to a signal inlet terminal of the KCS cabinet passive analog conditioning distribution card, and the passive analog signal simulation is realized by adjusting the resistance value of the adjustable resistor; when the type of the obtained protection signal is an active analog signal, an adjustable resistor is connected to a signal inlet terminal of the KCS cabinet passive analog conditioning distribution card, a standby terminal current output signal of the KCS cabinet passive analog conditioning distribution card is led to an input end of the active analog conditioning distribution card through a short wire, and the analog simulation of the active analog signal is realized by adjusting the resistance value of the adjustable resistor.
In the input signals of the reactor protection system, the switching value signals are all passive signals, and a 24V power supply is provided by a security level process control cabinet system (KCS) cabinet digital quantity input (DI) board card; analog quantity signals are divided into active analog quantity signals and passive analog quantity signals, and are collected by a KCS cabinet analog quantity conditioning distribution card. KCS cabinet analog conditioning distribution cards are of two types: SABK01A and SABK01C. The SABK01A is an active analog quantity conditioning board card and is used for collecting input active 0-24 mA current signals, and outputting 4 paths of standard 0-24 mA current signals after signal conditioning and isolation to realize input and output isolation, wherein the outputs are isolated from each other; the SABK01C is a passive analog quantity conditioning board card and is used for collecting input passive 0-24 mA current signals (passive signals, 24V power is provided in the board card), and after signal conditioning and isolation, 4 paths of standard 0-24 mA current signals are output, so that input and output isolation is realized, and the outputs are isolated from each other. The active analog quantity signal of the reactor protection system is collected by the SABK01A board card, and the passive analog quantity signal is collected by the SABK01C board card.
For diversified protection input signals, the simulation method is as follows:
1. switching value signal: if the signal needs to be simulated as 1 (on), shorting the signal inlet terminal by using a shorting wire; if the signal is to be emulated as 0 (off), the signal inlet terminal is isolated.
2. Passive analog signal: the adjustable resistor is used for simulation at the signal inlet terminal, and the signal simulation is realized by adjusting the resistance value of the adjustable resistor.
3. Active analog signal: and 4-20 mA current output signals of the standby terminal of the KCS cabinet passive analog quantity conditioning distribution card are led to the input end of the active analog quantity conditioning distribution card through matching with an adjustable resistor, so that signal simulation is available.
The technical principle of the analog input signal simulation method is shown in fig. 2 to 4.
As shown in fig. 2, for passive analog signals, a fixed voltage source is provided by a passive conditioning board card. The output end of the passive conditioning board card is connected with analog input equipment AI. The input end of the passive conditioning board card is connected with a passive analog signal instrument M.
As shown in fig. 3, for the active analog signal, an analog input device AI is connected to the output end of the active conditioning board. The input end of the active conditioning board card is connected with an active analog signal instrument M. The fixed voltage source is provided by an active analog signal meter M.
As shown in fig. 4, for the simulation of the passive analog signal, only the passive analog signal meter M is replaced with an adjustable resistor.
As shown in fig. 5, for the simulation of the active analog signals, both an active conditioning board and a passive conditioning board are used; the passive analog quantity signal instrument M is replaced by an adjustable resistor, meanwhile, the data connection between the active analog quantity signal instrument M and the active conditioning board card is disconnected, and the active analog quantity signal instrument M only provides fixed voltage for the active conditioning board card. And finally, leading the current output signal of the standby terminal of the passive conditioning board card to the input end of the active conditioning board card through a shorting bar.
The analog input signal simulation method is described below in specific examples in connection with passive and active signal simulation.
As shown in fig. 4, the passive analog signal is provided by a KCS cabinet passive analog conditioning distribution card, taking a main feedwater flow measuring transducer ARE049MD (AI) as an example, and the simulation method is as follows: and removing an external cable of the ARE049MD at an inlet terminal of the KCS cabinet, accessing an adjustable resistor, and adjusting the resistance value to enable the current value of an input signal of the ARE049MD to be 4mA, thereby realizing the simulation purpose that the ARE049MD flow is 0 (the lower limit of the physical quantity measuring range).
As shown in fig. 5, the active analog signal is powered by the local meter body M, taking the nuclear power range probe power signal RPN010MA-PR (AI 2) as an example, the simulation method is as follows: external cables of the ARE049MD (AI 1) and the RPN010MA-PR (AI 2) at an inlet terminal of the KCS cabinet ARE removed, an adjustable resistor is connected to the KCS cabinet terminal of the ARE049MD (AI 1), the resistance value is adjusted to enable the current value of an input signal of the ARE049MD to be 4mA, and 4mA current signals output by a standby terminal of the ARE049MD (AI 1) passive analog quantity conditioning distribution card ARE led to an input end of an RPN010MA-PR (AI 2) active analog quantity conditioning distribution card through a short-circuit wire, so that simulation display of the lower range of the RPN010MA-PR can be realized.
The simulation method is practically applied, and a very good effect is obtained.
According to the simulation method, the self-simulation of the diversified input signals of the reactor protection system is realized only by using the shorting bars, the adjustable resistors and the inherent analog quantity conditioning distribution card of the KCS cabinet, and the requirements of the full-period debugging test and the COC power failure test of the reactor protection system are efficiently met. The simulation method has the following characteristics:
1) The self-simulation method of the diversified input signals of the reactor protection system comprises the following steps: the method does not depend on an external power supply and does not force a software signal manually;
2) Aiming at the passive analog input signal of the reactor protection system, a method of accessing an adjustable resistor and realizing signal simulation by adjusting the resistance value is adopted;
3) Aiming at the active analog input signal of the reactor protection system, an analog simulation method which depends on the cooperation of the inherent conditioning distribution card of the DCS and the adjustable resistor is adopted.
The self-simulation method provided by the invention is simple, convenient and efficient, saves cost, shortens construction period, obviously reduces workload, improves the reliability of simulation signals, and reduces the risk of human failure.
The embodiment of the invention also provides a nuclear power plant diversified protection signal simulation system, which comprises:
an active analog quantity conditioning distribution card, a passive analog quantity conditioning distribution card, an adjustable resistor and a shorting bar; the adjustable resistor is used for being connected with a signal inlet terminal of the passive analog quantity conditioning distribution card to replace an original passive analog quantity signal instrument; the shorting stub is used for connecting a standby terminal current output signal of the passive analog quantity conditioning distribution card with an input end of the active analog quantity conditioning distribution card; types of diversified protection signals for a nuclear power plant include: switching value signals, passive analog value signals and active analog value signals; when the type of the obtained protection signal is a switching value signal, the shorting wire is used for shorting the signal inlet terminal to realize the connection in the analog simulation switching value signal; isolating the signal inlet terminal to realize the disconnection in the analog simulation switching value signal; when the type of the obtained protection signal is a passive analog signal, the passive analog signal simulation is realized by adjusting the resistance value of the adjustable resistor connected at the signal inlet terminal of the passive analog conditioning distribution card; when the type of the obtained protection signal is an active analog quantity signal, the resistance value of the adjustable resistor connected at the signal inlet terminal of the passive analog quantity conditioning distribution card is adjusted, and then the standby terminal current output signal of the passive analog quantity conditioning distribution card is led to the input end of the active analog quantity conditioning distribution card through the shorting bar, so that the analog simulation of the active analog quantity signal is realized.
The passive analog quantity conditioning distribution card is a SABK01C board card; the SABK01C board card is used for collecting input passive 0-24 mA current signals, a 24V power supply is provided inside the board card, after signal conditioning and isolation, 4 paths of standard 0-24 mA current signals are output to realize input and output isolation, and all outputs are mutually isolated. The active analog quantity conditioning distribution card is a SABK01A board card; the SABK01A board card is used for collecting input active 0-24 mA current signals, outputting 4 paths of standard 0-24 mA current signals after signal conditioning and isolation to realize input and output isolation, and the outputs are isolated from each other. The switching value signal is a passive signal, and a digital quantity input board card of the KCS cabinet provides 24V power.
For the passive analog quantity signal, the passive analog quantity conditioning distribution card provides power, and for the main water supply flow measuring transmitter ARE049MD, the simulation method specifically comprises the following steps: and removing an external cable of the main water supply flow measurement transmitter ARE049MD at an inlet terminal of the KCS cabinet, accessing the adjustable resistor, and adjusting the resistance value of the adjustable resistor to enable the current value of an input signal of the main water supply flow measurement transmitter ARE049MD to be 4mA so as to achieve the simulation purpose that the flow of the main water supply flow measurement transmitter ARE049MD is 0.
For the active analog quantity signal, the original instrument body provides power, and for the nuclear power range probe power signal RPN010MA-PR, the simulation method specifically comprises the following steps: removing external cables of the main water supply flow measuring transmitter ARE049MD and the nuclear power range probe power signal RPN010MA-PR at an inlet terminal of a KCS cabinet, connecting the main water supply flow measuring transmitter ARE049MD to the adjustable resistor at the KCS cabinet terminal, adjusting the resistance value of the adjustable resistor to enable the current value of the main water supply flow measuring transmitter ARE049MD input signal to be 4mA, and leading the 4mA current signal output by the main water supply flow measuring transmitter ARE049MD passive analog quantity conditioning distribution card spare terminal to the input end of the nuclear power range probe power signal RPN010MA-PR active analog quantity conditioning distribution card through a short-circuit wire to realize the simulation display of the lower limit of the nuclear power range probe power signal PN010MA-PR range.
While the foregoing is directed to the preferred embodiment, other and further embodiments of the invention will be described in detail herein, with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to the specific embodiment illustrated and the embodiments illustrated, and any modifications, equivalents, improvements or changes which fall within the spirit and principles of the invention are intended to be included within the scope of the invention as set forth in the appended claims.
Claims (12)
1. A nuclear power plant diversified protection signal simulation method comprises the following steps:
obtaining a type of protection signal, wherein the type of protection signal comprises: switching value signals, passive analog value signals and active analog value signals;
when the type of the obtained protection signal is a switching value signal, a shorting wire is used for shorting a signal inlet terminal to realize the connection in the analog simulation switching value signal, and the signal inlet terminal is isolated to realize the disconnection in the analog simulation switching value signal;
when the type of the obtained protection signal is a passive analog signal, an adjustable resistor is connected to a signal inlet terminal of the KCS cabinet passive analog conditioning distribution card, and the passive analog signal simulation is realized by adjusting the resistance value of the adjustable resistor;
when the type of the obtained protection signal is an active analog signal, an adjustable resistor is connected to a signal inlet terminal of the KCS cabinet passive analog conditioning distribution card, a standby terminal current output signal of the KCS cabinet passive analog conditioning distribution card is led to an input end of the active analog conditioning distribution card through a short wire, and the analog simulation of the active analog signal is realized by adjusting the resistance value of the adjustable resistor.
2. The nuclear power plant diversified protection signal simulation method according to claim 1, wherein the passive analog quantity conditioning distribution card is a SABK01C board card; the SABK01C board card is used for collecting input passive 0-24 mA current signals, a 24V power supply is provided inside the board card, after signal conditioning and isolation, 4 paths of standard 0-24 mA current signals are output to realize input and output isolation, and all outputs are mutually isolated.
3. The nuclear power plant diversified protection signal simulation method according to claim 1, wherein the active analog quantity conditioning distribution card is a SABK01A board card; the SABK01A board card is used for collecting input active 0-24 mA current signals, outputting 4 paths of standard 0-24 mA current signals after signal conditioning and isolation to realize input and output isolation, and the outputs are isolated from each other.
4. The method for simulating the diversity protection signal of the nuclear power plant according to claim 1, wherein the switching value signal is a passive signal, and the digital input board card of the KCS cabinet provides 24V power.
5. The simulation method for the diversified protection signals of a nuclear power plant according to claim 1, wherein for the passive analog signals, the passive analog conditioning distribution card provides power, and for the main feedwater flow measurement transmitter ARE049MD, the simulation method specifically comprises: and removing an external cable of the main water supply flow measurement transmitter ARE049MD at an inlet terminal of the KCS cabinet, accessing the adjustable resistor, and adjusting the resistance value of the adjustable resistor to enable the current value of an input signal of the main water supply flow measurement transmitter ARE049MD to be 4mA so as to achieve the simulation purpose that the flow of the main water supply flow measurement transmitter ARE049MD is 0.
6. The simulation method of the diversified protection signal of a nuclear power plant according to claim 5, wherein for the active analog signal, the original instrument body provides power, and for the nuclear power range probe power signal RPN010MA-PR, the simulation method specifically comprises: removing external cables of the main water supply flow measuring transmitter ARE049MD and the nuclear power range probe power signal RPN010MA-PR at an inlet terminal of a KCS cabinet, connecting the main water supply flow measuring transmitter ARE049MD to the adjustable resistor at the KCS cabinet terminal, adjusting the resistance value of the adjustable resistor to enable the current value of the main water supply flow measuring transmitter ARE049MD input signal to be 4mA, and leading the 4mA current signal output by the main water supply flow measuring transmitter ARE049MD passive analog quantity conditioning distribution card spare terminal to the input end of the nuclear power range probe power signal RPN010MA-PR active analog quantity conditioning distribution card through a short-circuit wire to realize the simulation display of the lower limit of the nuclear power range probe power signal PN010MA-PR range.
7. The utility model provides a diversified protection signal analog simulation system of nuclear power plant which characterized in that includes:
an active analog quantity conditioning distribution card, a passive analog quantity conditioning distribution card, an adjustable resistor and a shorting bar;
the adjustable resistor is used for being connected with a signal inlet terminal of the passive analog quantity conditioning distribution card to replace an original passive analog quantity signal instrument; the shorting stub is used for connecting a standby terminal current output signal of the passive analog quantity conditioning distribution card with an input end of the active analog quantity conditioning distribution card;
types of diversified protection signals for a nuclear power plant include: switching value signals, passive analog value signals and active analog value signals;
when the type of the obtained protection signal is a switching value signal, the shorting wire is used for shorting the signal inlet terminal to realize the connection in the analog simulation switching value signal; isolating the signal inlet terminal to realize the disconnection in the analog simulation switching value signal;
when the type of the obtained protection signal is a passive analog signal, the passive analog signal simulation is realized by adjusting the resistance value of the adjustable resistor connected at the signal inlet terminal of the passive analog conditioning distribution card;
when the type of the obtained protection signal is an active analog quantity signal, the resistance value of the adjustable resistor connected at the signal inlet terminal of the passive analog quantity conditioning distribution card is adjusted, and then the standby terminal current output signal of the passive analog quantity conditioning distribution card is led to the input end of the active analog quantity conditioning distribution card through the shorting bar, so that the analog simulation of the active analog quantity signal is realized.
8. The nuclear power plant diversified protection signal simulation system of claim 7, wherein the passive analog quantity conditioning distribution card is a SABK01C board card; the SABK01C board card is used for collecting input passive 0-24 mA current signals, a 24V power supply is provided inside the board card, after signal conditioning and isolation, 4 paths of standard 0-24 mA current signals are output to realize input and output isolation, and all outputs are mutually isolated.
9. The nuclear power plant diversified protection signal simulation system of claim 7, wherein the active analog quantity conditioning distribution card is a SABK01A board card; the SABK01A board card is used for collecting input active 0-24 mA current signals, outputting 4 paths of standard 0-24 mA current signals after signal conditioning and isolation to realize input and output isolation, and the outputs are isolated from each other.
10. The system of claim 7, wherein the switching value signal is a passive signal and the 24V power is provided by a digital input board of the KCS cabinet.
11. The system of claim 7, wherein for the passive analog signals, the passive analog conditioning distribution card provides power, and for the main feedwater flow measurement transmitter ARE049MD, the simulation method specifically comprises: and removing an external cable of the main water supply flow measurement transmitter ARE049MD at an inlet terminal of the KCS cabinet, accessing the adjustable resistor, and adjusting the resistance value of the adjustable resistor to enable the current value of an input signal of the main water supply flow measurement transmitter ARE049MD to be 4mA so as to achieve the simulation purpose that the flow of the main water supply flow measurement transmitter ARE049MD is 0.
12. The system according to claim 11, wherein for the active analog signal, the original meter body provides power, and for the nuclear power range probe power signal RPN010MA-PR, the simulation method specifically comprises: removing external cables of the main water supply flow measuring transmitter ARE049MD and the nuclear power range probe power signal RPN010MA-PR at an inlet terminal of a KCS cabinet, connecting the main water supply flow measuring transmitter ARE049MD to the adjustable resistor at the KCS cabinet terminal, adjusting the resistance value of the adjustable resistor to enable the current value of the main water supply flow measuring transmitter ARE049MD input signal to be 4mA, and leading the 4mA current signal output by the main water supply flow measuring transmitter ARE049MD passive analog quantity conditioning distribution card spare terminal to the input end of the nuclear power range probe power signal RPN010MA-PR active analog quantity conditioning distribution card through a short-circuit wire to realize the simulation display of the lower limit of the nuclear power range probe power signal PN010MA-PR range.
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| CN116092708A (en) * | 2023-01-06 | 2023-05-09 | 成都思源智造科技有限公司 | Test system for control protection of nuclear safety level reactor |
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