Nuclear power plant test data acquisition method, nuclear power plant test data acquisition system and computer program product

Abstract

The invention discloses a nuclear power plant test data acquisition method, a nuclear power plant test data acquisition system and a computer program product. The method comprises the steps that S1, a signal distribution unit is arranged in a cabinet of a main cabinet group, the signal distribution unit obtains initial signals of to-be-tested equipment, each initial signal is distributed, a plurality of corresponding identical signals are output, and the identical signals comprise a control signal and at least one test signal; s2, the cabinets in the main cabinet group are connected with a test processing cabinet through a plurality of first normal state cables, and the test signals output by the main cabinet group are transmitted to the test processing cabinet; and S3, the test processing cabinet collects test signals and carries out calculation processing. By implementing the technical scheme of the invention, temporary connection and disconnection are not needed, the operation safety of the nuclear power unit is improved, the risk of key path delay of overhaul caused by test rework due to connection looseness, low insulation or short-circuit grounding is reduced, the test reliability is improved, and the labor cost input is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nuclear power, in particular to a nuclear power plant test data acquisition method, system and computer program product. BACKGROUND

[0002] At present, domestic nuclear power units all adopt the mode of laying temporary cables across the plant room by artificial to connect different column test signals to the high-speed recorder to acquire nuclear safety related system periodic test data, the existing method has the following defects: (a) there is a risk of misoperation of nuclear safety related equipment. Because the test has frequent disconnection of multiple command signals and cross-room wiring, the recorder short-circuit or ground during the disconnection process, or even the personnel mis-touch, will cause the misoperation of nuclear safety related equipment, which has adverse effects on the nuclear safety of the unit. (b) low work efficiency. Because the signals to be collected are distributed in different columns of safety class DCS (nuclear power digital instrument control system), for example, different columns of safety class DCS are arranged in three different plant rooms (BSA / BSB / BSC), single test needs to be performed in different plant rooms to install high-speed recorders for signal recording, and the recorders need to be disconnected multiple times and manually calculated and filled in time after recording. (c) there is a risk of delaying the key path of nuclear power unit overhaul. Because the temporary wiring of the recorder is easy to loosen, if the recorder wiring is loose, the insulation is low or short-circuit grounding during the test, the test will be redone, causing the delay of the key path of the overhaul. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a nuclear power plant test data acquisition method, system and computer program product.

[0004] The technical scheme adopted by the present application to solve the technical problem is: a nuclear power plant test data acquisition method is constructed, the method comprises the following steps: S1. A signal distribution unit is arranged in the cabinet of the total cabinet group, the signal distribution unit acquires the initial signals of the to-be-tested equipment, distributes each initial signal, and outputs a plurality of same signals corresponding to the initial signals, the plurality of same signals include control signals and at least one test signal; S2. The cabinets in the total cabinet group are connected with a test processing cabinet through a plurality of first normal cables, and the test signals output by the total cabinet group are transmitted to the test processing cabinet; S3. The test processing cabinet acquires and processes the test signals.

[0005] Further, the DCS system of the nuclear power plant comprises a plurality of cabinet columns, each cabinet column comprises a total cabinet group; a plurality of initial signals of each to-be-tested equipment are distributed to the total cabinet group of different cabinet columns for acquisition.

[0006] Further, in step S1, the total cabinet group in the cabinet column includes a first cabinet group, in one of the cabinet columns, the first cabinet group includes one or more different types of first cabinets connected with the to-be-tested equipment, the signal distribution unit is a first signal distribution unit, and the first signal distribution unit is arranged in each of the first cabinets; in step S2, the cabinet in the total cabinet group is the first cabinet, and the first cabinets in all the cabinet columns are connected with one test processing cabinet through a plurality of first normal cables.

[0007] Further, in step S1, the total cabinet group in the cabinet column includes a second cabinet group, in one of the cabinet columns, the second cabinet group includes at least one first summary cabinet and a plurality of second cabinets of the same type connected with the to-be-tested equipment, the signal distribution unit is a second signal distribution unit, and the second signal distribution unit is arranged in each of the second cabinets; each of the second cabinets is connected with the first summary cabinet through a plurality of second normal cables, and the test signals output by each of the second cabinets are summarized to the first summary cabinet, and the first summary cabinet is provided with a plurality of relays; in step S2, the cabinet in the total cabinet group is the first summary cabinet, and the first summary cabinets in all the cabinet columns are connected with one test processing cabinet through a plurality of first normal cables.

[0008] Further, in step S1, the total cabinet group in the cabinet column includes a third cabinet group, in one of the cabinet columns, the third cabinet group includes one or more different types of fourth cabinets connected with the to-be-tested equipment, at least one second summary cabinet, and a plurality of third cabinets of the same type connected with the to-be-tested equipment, the signal distribution unit is a third signal distribution unit, and the third signal distribution unit is arranged in each of the fourth cabinets and each of the third cabinets; each of the third cabinets is connected with the second summary cabinet through a plurality of third normal cables, and the test signals output by each of the third cabinets are summarized to the second summary cabinet, and the second summary cabinet is provided with a plurality of relays; in step S2, the cabinet in the total cabinet group is the fourth cabinet and the second summary cabinet, and the fourth cabinets and the second summary cabinets in all the cabinet columns are connected with one test processing cabinet through a plurality of first normal cables.

[0009] Preferably, the signal distribution unit includes a board card or a plurality of solid-state relays or a signal distribution card, digital signals in the initial signals are distributed through the board card or the solid-state relays, and analog signals in the initial signals are distributed through the signal distribution card.

[0010] Preferably, the test collection cabinet includes a data collection and data processing module.

[0011] Further, in step S3, the test acquisition cabinet acquires through a digital quantity acquisition card or an analog quantity acquisition card in the cabinet; the digital signal in the test signal is acquired by the digital quantity acquisition card, and the analog signal in the test signal is acquired by the analog quantity acquisition card.

[0012] The application also constructs a nuclear power plant test data acquisition system, which comprises: A signal distribution module is arranged in the cabinet of the total cabinet group, and the signal distribution unit acquires the initial signal of the equipment to be tested, distributes each initial signal, and outputs a plurality of same signals corresponding to the initial signal, wherein the plurality of same signals comprise a control signal and at least one test signal. A signal transmission module is arranged in the cabinet of the total cabinet group, and the cabinet is connected to a test processing cabinet through a plurality of first normal cables, so as to transmit the test signal output by the total cabinet group to the test processing cabinet. A signal processing module comprises a test processing cabinet, which is used for acquiring and processing the test signal.

[0013] The application also constructs a computer program product, which comprises a computer program, and the computer program is executed by a processor to realize the steps in any of the above methods.

[0014] According to the technical scheme of the application, the signal distribution unit is arranged in the total cabinet group of the DCS system of the nuclear power plant, the initial signal of the equipment to be tested is distributed to obtain a test signal dedicated to the test, and the test signal is transmitted to the test processing cabinet through the long-term connected normal cable, so that the temporary disconnection of the wire is not required, the risk of misoperation of the nuclear safety related equipment is avoided, the risk of the delay of the overhaul key path caused by the test redo due to the loose connection, low insulation or short circuit grounding of the wire is reduced, and the operation safety of the nuclear power plant is improved; since the temporary cable and the recorder are not required to be laid across the plant, and the test related data is calculated by the test acquisition cabinet, the manual reading and calculation are not required, the labor cost is reduced, and the efficiency of the periodic test is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The application will be further described below with reference to the drawings and embodiments, and the drawings show: Figure 1 is a flowchart of the nuclear power plant test data acquisition method in an embodiment of the application; Figure 2 is a connection diagram of the test data acquisition method of the periodic test A of the nuclear power plant in an embodiment of the application; Figure 3 is a connection diagram of the test data acquisition method of the periodic test B of the nuclear power plant in an embodiment of the application; Figure 4It is a test data acquisition method connection diagram of the operability test of the safety valve of the pressurizer of the nuclear power plant, the disconnection test of the main pump breaker and the opening test of the VDA isolation valve in an embodiment of the present application. DETAILED DESCRIPTION

[0016] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings.

[0017] It should be understood that in the nuclear power plant, the nuclear power equipment is connected to the cabinet of the nuclear power plant DCS system, the nuclear power plant DCS system is the core platform for ensuring the safe, stable and economic operation of the nuclear power plant, responsible for monitoring the operating state of the nuclear power plant, and ensuring the safe shutdown of the reactor and the accident mitigation under accident conditions. The present application realizes test data acquisition based on the nuclear power plant DCS system.

[0018] Figure 1 It is a flowchart of the test data acquisition method of the nuclear power plant in an embodiment of the present application, which includes the following steps in the embodiment: S1. A signal distribution unit is arranged in the cabinet of the total cabinet group, the signal distribution unit acquires the initial signal of the equipment to be tested, distributes each initial signal, outputs a plurality of same signals corresponding to the initial signal, and the plurality of same signals include a control signal and at least one test signal; In this step, the equipment to be tested is the equipment whose signal needs to be collected during the periodic test of the nuclear safety related system, the equipment to be tested is connected to one or more cabinets in the total cabinet group, and the cabinet collects the signal of the equipment to be tested. The initial signal is the same as the output signal, one of the output signals is a control signal, which is used to complete the control, monitoring and other functions in the original cabinet, and at least one of the other output signals is a test signal, which is used to complete the periodic test. In order to improve safety, the initial signal of the collected equipment is distributed by the signal distribution unit to obtain a test signal dedicated to the periodic test, which is distinguished from the control signal originally used in the cabinet. The test signal and the control signal are the same but do not interfere with each other, which avoids the influence of the test signal on the function of the control signal.

[0019] S2. The cabinet in the total cabinet group is connected to a test processing cabinet through a plurality of first normal cables, and the test signal output by the total cabinet group is transmitted to the test processing cabinet; In this step, the first normal cable is permanently connected to the cabinet of the total cabinet group and the test processing cabinet, and the test signal output by the total cabinet group in step S1 is transmitted to a test processing cabinet. The normal cable is different from the dynamic cable of the high-speed recorder in the traditional scheme, and the dynamic cable needs to be frequently connected and disconnected. The normal cable used in the embodiment of the present application avoids the misoperation of the nuclear safety related equipment caused by short circuit, grounding or accidental touch of personnel during the disconnection process of the recorder, which has adverse effects on the nuclear safety of the unit.

[0020] S3. The test processing cabinet collects the test signals and performs calculation processing.

[0021] In this step, the test processing cabinet can automatically record all test data, perform calculation processing on the test data, and obtain the final test results.

[0022] Further, in an optional embodiment, the test collection cabinet comprises a data collection module and a data processing module. Specifically, the data collection module is used to collect and record test data, and the data processing module comprises a computer program for performing calculation processing on the test data. The computer program can be set according to the test requirements.

[0023] Further, in an optional embodiment, the test collection cabinet is collected through a digital quantity collection card or an analog quantity collection card in the cabinet. The digital signals in the test signals are collected by the digital quantity collection card, and the analog signals in the test signals are collected by the analog quantity collection card. Specifically, the test cabinet can be a KDO cabinet of a nuclear power plant. The sampling period of the analog quantity of the KDO cabinet is 25 ms, the sampling period of the digital quantity is 1 ms, and the signal transmission and processing delay meets the collection requirement of 50 ms of the test.

[0024] Further, in an optional embodiment, the DCS system of the nuclear power plant comprises a plurality of cabinet columns, each of which comprises a total cabinet group; a plurality of initial signals of each device to be tested are distributed to the total cabinet groups of different cabinet columns for collection. Specifically, in the DCS system of the nuclear power plant, the cabinets are distributed in multiple columns, each column undertakes different functions, realizes the distributed control and centralized management of various devices and process of the nuclear power plant, and the number of cabinet columns can be set according to actual requirements; there can be multiple devices to be tested, and a device to be tested has multiple different initial signals, which are distributed to the total cabinet groups of different cabinet columns for collection according to different functional requirements.

[0025] Further, in an optional embodiment, in step S1, the total cabinet group in the cabinet column comprises a first cabinet group, and in one cabinet column, the first cabinet group comprises one or more different types of first cabinets connected with the device to be tested, and the signal distribution unit is a first signal distribution unit, which is arranged in each first cabinet; in step S2, the cabinets in the total cabinet group are first cabinets, and the first cabinets in all cabinet columns are connected with a test processing cabinet through a plurality of first normal cables.

[0026] Specifically, there are various types of cabinets in the DCS system of a nuclear power plant, such as KCP cabinets, CIC cabinets, etc., and different types of cabinets perform different functions. A plurality of initial signals of a device to be tested are connected to different cabinet columns, and in a cabinet column, the plurality of initial signals of a device to be tested are connected to the same type of first cabinet or different types of first cabinets in a first cabinet group, and the number of first cabinets can be one or more, which is determined according to actual needs and the layout of the DCS system. A first signal distribution unit is arranged in each first cabinet connected to the device to be tested, for distributing and outputting at least one test signal corresponding to each initial signal. Finally, in step S2, each first cabinet in each cabinet column is connected to the same test processing cabinet through a plurality of first normal cables for transmission of test signals. Figure 2 As shown in the connection diagram of the test data acquisition method of the periodic test A of the nuclear power plant, in a cabinet column A, for a device A to be tested, one initial signal of the device A is transmitted to an A-type first cabinet 1 in the cabinet column, and two initial signals are respectively transmitted to two B-type first cabinets in the cabinet column; a first signal distribution unit is arranged in the A-type first cabinet and the two B-type first cabinets. The first signal distribution unit of the A-type first cabinet distributes one initial signal to output at least two same signals, one of which is used as a control signal to realize the original monitoring function of the A-type cabinet, and the other is used as a test signal output for periodic testing; the B-type first cabinet also distributes each initial signal. Other signals of the device A to be tested are also connected to other cabinet columns, and the other cabinet columns are processed in the same way as the above cabinet column; finally, the first cabinets in all cabinet columns connected to the device for signal acquisition and distribution are connected to the same test processing cabinet through first normal cables, and the test signals output by the first cabinets are transmitted to a test processing cabinet. It can be understood that other devices to be tested can also be acquired and distributed by the above method, and the first cabinet can acquire signals of multiple devices to be tested.

[0027] Further, in an optional embodiment, in step S1, the total cabinet group in the cabinet column includes a second cabinet group, and in a cabinet column, the second cabinet group includes at least one first summary cabinet and a plurality of second cabinets of the same type connected to the device to be tested, and the signal distribution unit is a second signal distribution unit arranged in each second cabinet; each second cabinet is connected to a first summary cabinet through a plurality of second normal cables, and the test signals output by each second cabinet are summarized to a first summary cabinet, and the first summary cabinet is provided with a plurality of relays; in step S2, the cabinet in the total cabinet group is a first summary cabinet, and the first summary cabinets in all cabinet columns are connected to a test processing cabinet through a plurality of first normal cables.

[0028] Specifically, the total cabinet group in the cabinet column includes a second cabinet group, as Figure 3 As shown in the connection diagram of the test data acquisition method of the periodic test B of the nuclear power plant, for a device B to be tested, in a cabinet column A, the multiple initial signals of the device B are connected to multiple C-type second cabinets in the second cabinet group of the column. If each C-type second cabinet is connected to a test processing cabinet across the column, more space and cable resources will be occupied. Therefore, in this embodiment, a second signal distribution unit is arranged in each second cabinet connected to the device B to be tested, for distributing and outputting at least one test signal corresponding to each initial signal. Each second cabinet is connected to a first summary cabinet in the column through a plurality of second normal cables to summarize and output the test signals output by each second cabinet to a first summary cabinet. The first summary cabinet is provided with multiple relays for signal isolation of each safety level signal to improve the safety of signal transmission of the nuclear power plant. Finally, in step S2, the first summary cabinets in each cabinet column are connected to the same test processing cabinet through a plurality of first normal cables for transmission of test signals, wherein the number of first normal cables is determined according to the number of signals to be transmitted and the type of cables.

[0029] The test signals are pre-summarized by the second normal cables between the cabinets in the same column and then transmitted to the test processing cabinet. Since the distance between the cabinets in the same column is short, the number of cross-column cables after summarization is small, which can save the cost of cables and layout space and reduce the risk of cross-column connection.

[0030] Further, in an optional embodiment, in step S1, the total cabinet group in the cabinet column includes a third cabinet group, in a cabinet column, the third cabinet group includes one or more fourth cabinets of different types connected to the device to be tested, at least one second summary cabinet and multiple third cabinets of the same type connected to the device to be tested, the signal distribution unit is a third signal distribution unit arranged in each fourth cabinet and each third cabinet; each third cabinet is connected to a second summary cabinet through a plurality of third normal cables to summarize and output the test signals output by each third cabinet to a second summary cabinet, and the second summary cabinet is provided with multiple relays; in step S2, the cabinets in the total cabinet group are the fourth cabinets and the second summary cabinets, and the fourth cabinets and the second summary cabinets in all cabinet columns are connected to a test processing cabinet through a plurality of first normal cables.

[0031] Specifically, the total cabinet group in the cabinet column includes a third cabinet group, in which a plurality of initial signals of one device to be tested are connected to one or more fourth cabinets of different types and a plurality of third cabinets of the same type in the third cabinet group in one cabinet column. Among them, the number of fourth cabinets is relatively small, and each fourth cabinet distributes at least one test signal corresponding to each initial signal collected by the third signal distribution unit in it, and then in step S2, each fourth cabinet in each cabinet column is connected to the same test processing cabinet through the first normal cable for a long time to transmit the test signal; wherein each third cabinet distributes at least one test signal corresponding to each initial signal collected by the third signal distribution unit in it, and since the number of third cabinets of the same type is large, each third cabinet in the column is connected to one second summary cabinet in the column through a number of third normal cables for a long time, and the test signals output by each third cabinet are summarized to one second summary cabinet, and finally, in step S2, the second summary cabinet in each cabinet column is connected to the same test processing cabinet through a number of first normal cables for a long time to transmit the test signal, wherein the number of first normal cables is determined according to the number of signals to be transmitted and the type of cable. It can be understood that the number of cabinets is a relative meaning, which can be adjusted according to the cabinet arrangement of the actual DCS system and the resource and space adaptability of the nuclear power plant. Through the combination scheme of directly connecting a small number of fourth cabinets to a test processing cabinet and a large number of third cabinets to a second summary cabinet and then connecting to a test processing cabinet, different cabinet settings can be flexibly adapted, cross-column cable laying can be reduced, and resource, space and manpower costs can be saved.

[0032] The connection method of the third cabinet group is illustrated by taking the operability test of the safety valve of the nuclear power plant stabilizer, the main pump circuit breaker opening test and the VDA isolation valve opening test as examples. As shown in FIG. 1, the DCS system of the nuclear power plant includes a plurality of cabinet columns, and each cabinet column includes a plurality of cabinets, and each cabinet includes a plurality of signal processing units. The signal processing units in each cabinet are connected to the same test processing cabinet through a plurality of normal cables for a long time to transmit the test signal. The test processing cabinet is connected to the same test processing cabinet through a plurality of normal cables for a long time to transmit the test signal. Figure 4The connection diagram of the test data acquisition method of the operability test of the safety valve of the pressurizer of the nuclear power plant, the opening test of the VDA isolation valve and the opening test of the circuit breaker of the main pump in the embodiment, the DCS system of the nuclear power plant includes three cabinet columns, the fourth cabinet includes the KCP cabinet and the RPC cabinet, the third cabinet includes a plurality of CIC cabinets, each column further includes a second summary cabinet, that is, the ARC cabinet, and the test processing cabinet is the KDO cabinet. Among them, the three KCP cabinets are distributed in the three cabinet columns, the seventeen CIC cabinets are distributed in the three cabinet columns, and the five RPC cabinets are distributed in the three cabinet columns. The three initial analog signals of the pressurizer safety valve are transmitted to the KCP cabinets in the three cabinet columns, and the eighteen initial digital signals are transmitted to the CIC cabinets in the three cabinet columns. Similarly, the plurality of initial signals of the main pump circuit breaker and the VDA main steam discharge isolation valve are transmitted to the plurality of cabinets of the three cabinet columns. For the fourth cabinet in each cabinet column, that is, the KCP cabinet and the RPC cabinet, after signal distribution, it is connected to a KDO cabinet through a total of 3 first normal cables and a total of 7 first normal cables; for the third cabinet in the three cabinet columns, that is, the CIC cabinet, a total of 18 third normal cables are summarized into three ARC cabinets, and then the three ARC cabinets are connected to a KDO cabinet through 6 first normal cables.

[0033] Further, in an optional embodiment, the signal distribution unit includes a board card or a plurality of solid-state relays or a signal distribution card. The digital signals in the initial signals are distributed by the board card or the solid-state relay, and the analog signals in the initial signals are distributed by the signal distribution card. Specifically, in the DCS system of the nuclear power plant, different types of cabinets have different components. For the digital signals in the initial signals, if there is a board card component in the cabinet, the signal distribution can be realized by the board card, or it can be realized by a plurality of solid-state relays, for example, a digital type initial signal of the device to be tested can be connected to at least two solid-state relays in the cabinet, one of which is used as a control signal to complete the original function of the cabinet, and the other is used as a test signal to complete the periodic test. The output signals of the two relays are consistent with the initial signal; for the analog signals in the initial signals, the distribution is realized by the signal distribution card. In order to ensure the safety of the nuclear power plant, the above components are selected from the same type of components as the original cabinet. The components used by the signal distribution unit are not limited to the components in the embodiment, and other components can be used to complete the above signal distribution function according to actual needs.

[0034] The application also constructs a nuclear power plant test data acquisition system, which can be used to execute any of the above nuclear power plant test data acquisition methods. The system includes: The signal distribution module is configured to set a signal distribution unit in the cabinet of the total cabinet group, the signal distribution unit acquires initial signals of the equipment to be tested, distributes each initial signal, and outputs a plurality of same signals corresponding to the initial signals, wherein the plurality of same signals include a control signal and at least one test signal. The signal transmission module is configured to connect the cabinet in the total cabinet group with a test processing cabinet through a plurality of first normal cables, and transmit the test signal output by the total cabinet group to the test processing cabinet. The signal processing module includes a test processing cabinet, and is configured to collect test signals and perform calculation processing.

[0035] The application also provides a computer program product, which includes a computer program, and the computer program is executed by a processor to realize the steps of the nuclear power plant test data acquisition method.

[0036] It can be understood that the above embodiments only express the preferred embodiments of the application, and the description is more specific and detailed, but it cannot be understood as a limitation on the patent scope of the application; it should be pointed out that for ordinary skilled in the art, the above technical features can be freely combined without departing from the concept of the application, and some modifications and improvements can be made, which all belong to the protection scope of the application; therefore, any equivalent transformation and modification within the scope of the claims of the application shall belong to the scope of the claims of the application.

Claims

1. A method for collecting test data in a nuclear power plant, characterized by, The DCS system of the nuclear power plant comprises a general cabinet group, and the method comprises the following steps: S1. A signal distribution unit is arranged in a cabinet of the general cabinet group, the signal distribution unit acquires initial signals of the equipment to be tested, distributes each initial signal, and outputs a plurality of same signals corresponding to the initial signals, wherein the plurality of same signals comprise control signals and at least one test signal; S2. The cabinets in the general cabinet group are connected to a test processing cabinet through a plurality of first normal cables, and the test signals output by the general cabinet group are transmitted to the test processing cabinet; S3. The test processing cabinet collects the test signals and performs calculation processing.

2. The nuclear power plant test data collection method of claim 1, wherein, The DCS system of the nuclear power plant comprises a plurality of cabinet columns, each of which comprises a general cabinet group; and a plurality of initial signals of each equipment to be tested are distributed to the general cabinet groups in different cabinet columns for collection.

3. The method of claim 2, wherein, In step S1, the general cabinet group in the cabinet column comprises a first cabinet group, in one cabinet column, the first cabinet group comprises one or more different types of first cabinets connected to the equipment to be tested, and the signal distribution unit is a first signal distribution unit arranged in each first cabinet; In step S2, the cabinets in the general cabinet group are the first cabinets, and the first cabinets in all cabinet columns are connected to one test processing cabinet through a plurality of first normal cables.

4. The method of claim 2, wherein, In step S1, the general cabinet group in the cabinet column comprises a second cabinet group, in one cabinet column, the second cabinet group comprises at least one first summary cabinet and a plurality of second cabinets of the same type connected to the equipment to be tested, the signal distribution unit is a second signal distribution unit arranged in each second cabinet; each second cabinet is connected to one first summary cabinet through a plurality of second normal cables, the test signals output by each second cabinet are summarized to one first summary cabinet, and the first summary cabinet is provided with a plurality of relays; in step S2, the cabinets in the general cabinet group are the first summary cabinets, and the first summary cabinets in all cabinet columns are connected to one test processing cabinet through a plurality of first normal cables.

5. The method of claim 2, wherein, In step S1, the total cabinet group in the cabinet column includes a third cabinet group, in one of the cabinet columns, the third cabinet group includes one or more different types of fourth cabinets connected with the equipment to be tested, at least one second summary cabinet and a plurality of third cabinets of the same type connected with the equipment to be tested, the signal distribution unit is a third signal distribution unit, which is arranged in each fourth cabinet and each third cabinet; each third cabinet is connected with a second summary cabinet through a plurality of third normal cables, and the test signals output by each third cabinet are summarized to a second summary cabinet, and the second summary cabinet is provided with a plurality of relays; in step S2, the cabinets in the total cabinet group are the fourth cabinets and the second summary cabinets, and the fourth cabinets and the second summary cabinets in all cabinet columns are connected with a test processing cabinet through a plurality of first normal cables.

6. The nuclear power plant test data collection method of claim 1, wherein, The signal distribution unit includes a board card or a plurality of solid-state relays or a signal distribution card, and the digital signals in the initial signals are distributed by the board card or the solid-state relays, and the analog signals in the initial signals are distributed by the signal distribution card.

7. The method of claim 1, wherein, The test collection cabinet includes a data collection and data processing module.

8. The method of claim 1, wherein, In step S3, the test collection cabinet collects through a digital quantity collection card or an analog quantity collection card in the cabinet; the digital signals in the test signals are collected by the digital quantity collection card, and the analog signals in the test signals are collected by the analog quantity collection card.

9. A nuclear power plant test data acquisition system characterized by, The DCS system of the nuclear power plant includes a total cabinet group, and the nuclear power plant test data collection system includes: A signal distribution module is configured to arrange a signal distribution unit in a cabinet of the total cabinet group, the signal distribution unit acquires initial signals of equipment to be tested, distributes each of the initial signals, and outputs a plurality of same signals corresponding to the initial signals, the plurality of same signals including control signals and at least one test signal; A signal transmission module is configured to connect a cabinet in the total cabinet group with a test processing cabinet through a plurality of first normal cables, and transmit the test signals output by the total cabinet group to the test processing cabinet; A signal processing module includes a test processing cabinet, configured to collect and process the test signals.

10. A computer program product comprising a computer program, characterized in that, The computer program, when executed by a processor, implements the steps of the nuclear power plant test data collection method according to any one of claims 1 to 8.

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