CN115774428B - Data acquisition and storage system and method - Google Patents
Data acquisition and storage system and method Download PDFInfo
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- CN115774428B CN115774428B CN202211435587.XA CN202211435587A CN115774428B CN 115774428 B CN115774428 B CN 115774428B CN 202211435587 A CN202211435587 A CN 202211435587A CN 115774428 B CN115774428 B CN 115774428B
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Abstract
The invention provides a data acquisition and storage system and a data acquisition and storage method. The data acquisition and storage system comprises a data acquisition device and a data server. The data acquisition device is configured to acquire first data including data from hard-wired signals of other control systems of the nuclear power plant of the data acquisition device and data from non-safety-level field instruments of the nuclear power plant, with the first time period as a period. The data server is connected with an operation control system of the nuclear power plant, other control systems of the nuclear power plant and a data acquisition device and is configured to acquire first data and second data. The second data includes data from network signals of other control systems of the nuclear power plant and data from processors in an operational control system of the nuclear power plant. And storing the first data with the first time period or the third time period as a period, and storing the second data with the second time period or the third time period. The first time period is less than the second time period, and the second time period is less than the third time period.
Description
Technical Field
The invention relates to the technical field of control of electrical or electronic systems, in particular to a data acquisition and storage system and a data acquisition and storage method.
Background
Currently, in a control system of a nuclear power plant, according to a data acquisition period, data acquisition and storage can be divided into two parts, wherein one part is the acquisition and storage of data with low time resolution and the other part is the acquisition and storage of data with high time resolution. The collection and storage of low-time-resolution data is typically performed in a digital Control System (Digital Instrument & Control System, DCS) of a nuclear power plant, and workers can call and view the low-time-resolution data at two levels of DCS. For the collection and storage of data with high time resolution, there are typically 3 DCS independent systems, including a test data collection and storage system (Test Data Acquisition System, IDA), a transient recording and analysis system (TRANSIENT RECORDING AND ANALYSIS SYSTEM, TRA) and a Sequence of events (EVENT SYSTEM, SOE) system, IDA can be used to collect test data with high time resolution, TRA can be used to record and analyze transient data, SOE can be used to collect data of Sequence of events, and staff needs to view the data in the 3 systems in a computer room.
And two layers of DCS are arranged in the main control room, so that a worker generally operates in the main control room, and when the worker needs to check data with high time resolution, the worker needs to move from the main control room to the computer room to check the data in the 3 systems of IDA, TRA and SOE. The main control room and the computer room are not in the same room, so that the use of staff is inconvenient.
The amount of signals collected by IDA, TRA and SOE is typically 800 to 1000, and in order not to lose necessary data in experiments and accident analysis with high response time requirements, high-speed collection of the data is required, so that the required storage space is huge, and the storage space of IDA, TRA and SOE systems is limited.
Meanwhile, if a certain device of the nuclear power plant is not connected with the IDA, TRA and SOE by hard wires, the IDA, TRA and SOE are difficult to collect data of the certain device, so that data sources of the IDA, TRA and SOE are limited, and if the data sources of the IDA, TRA and SOE are to be expanded, the cables need to be re-laid to increase hard wires, which is troublesome.
Disclosure of Invention
The technical problem to be solved by the invention is that a worker cannot view or call data with high time resolution in a master control room, the storage space of IDA, TRA and SOE systems is limited, and the mode of expanding the data sources of IDA, TRA and SOE is troublesome. Aiming at the defects in the prior art, the data acquisition and storage system and the method are provided, so that operators and maintenance personnel in a master control room can conveniently view or call data with high time resolution at the same time, the storage space can be saved, and the data source can be conveniently expanded.
In a first aspect, the present invention provides a data acquisition and storage system comprising a data acquisition device and a data server. And the data acquisition device is respectively connected with the unsafe field instrument of the nuclear power plant and other control systems of the nuclear power plant, and is configured to acquire first data by taking a first time period as a period, wherein the first data comprises data of hard wire signals from the other control systems of the nuclear power plant and data from the unsafe field instrument of the nuclear power plant. The system comprises a non-safety level DCS, a data server and a data server, wherein the data server is respectively connected with an operation control system of the nuclear power plant, other control systems of the nuclear power plant and a data acquisition device, the operation control system of the nuclear power plant comprises the non-safety level DCS, a processing period of a processor of the non-safety level DCS of the nuclear power plant for data is a second time period, and the data server is configured to acquire first data and second data. The second data includes data from network signals of other control systems of the nuclear power plant and data from processors in an operational control system of the nuclear power plant. And storing the first data with the first time period or the third time period as a period, and storing the second data with the second time period or the third time period. The first time period is less than the second time period, and the second time period is less than the third time period.
The first data is data taking the first time period as the acquisition period, the second data is data taking the second time period as the acquisition period, and the first data belongs to data with high time resolution, and the second data belongs to data with low time resolution. Through the data acquisition and storage system provided by the invention, an operator can view or call the first data and the second data in the master control room at the same time. And when the first data is stored, the first time period or the third time period can be selected to be used, and because the first time period is smaller than the second time period and the second time period is smaller than the third time period, the storage period of the first data can be smaller or larger, if the first time period is taken as the storage period, the storage capacity needs to be occupied, and if the third time period is taken as the storage period in an idle time period or an operation stability time period (such as when no test is performed), the storage requirement is met, and meanwhile, the occupation of the storage capacity is reduced, so that the storage space is saved. Similarly, when the second data is stored, the storage period can be selected, and the occupation of the storage capacity can be reduced while the storage requirement is met, so that the storage space is saved. In addition, the data acquisition and storage system provided by the invention is connected with the safety level DCS or the non-safety level DCS, so that most data from the nuclear power control system can be acquired, and the data source is convenient and rapid to expand.
Specifically, the data server is configured to determine whether the first data acquired by the data server belongs to transient data. If so, storing transient data in a fourth time period which is more than the first time period by taking the first time period as a period, and eliminating transient data before the fourth time period. If not, the first data is stored by taking the first time period or the third time period as a period.
Specifically, if the first data acquired by the data server is transient data and an accident occurs, the data server is configured to acquire accident recall data, wherein the accident recall data comprises transient data taking the first time period as a storage period in a fifth time period before the accident occurs and in a sixth time period after the accident occurs, and the fifth time period is smaller than or equal to the fourth time period. And generating an incident recall report from the incident recall data and storing the incident recall report.
Specifically, if the first data acquired by the data server is not transient data, the data server is configured to store the first data with the first time period as a period and store the second data with the second time period as a period in the test. The test comprises debugging and starting test of the nuclear power plant unit. And storing the first data and the second data with the third time period as a period before the test or/and after the test.
Specifically, the first period of time includes 25ms.
Specifically, the range of the second period includes [50ms,200ms ].
Specifically, the third period of time includes 500ms or 1000ms.
The data acquisition and storage system provided by the invention is connected with the control system of the nuclear power plant, so that operators can see different data in the main control room through the interface of the operation control system of the nuclear power plant, and convenience is provided for the operators. In addition, by operating the control system, the data acquisition and storage system provided by the embodiment of the invention can acquire the data of all the devices, and is beneficial to expanding the data source. In addition, setting different storage periods for the data in different periods, deleting the data exceeding the fourth period, so as to reduce the storage amount of the data in a non-test stage or a stage of normal operation of the nuclear power plant equipment, and save the storage space under the condition of ensuring the accident recall function.
In a second aspect, the present invention provides a data acquisition and storage method, which is applied to the data acquisition and storage system of any one of the foregoing embodiments, and the data acquisition and storage method includes acquiring first data and second data. The first data includes data from hard-wired signals from other control systems of the nuclear power plant and data from non-safety-level field instruments of the nuclear power plant, and the second data includes data from network signals from other control systems of the nuclear power plant and data from processors in an operational control system of the nuclear power plant. And storing the first data with the first time period or the third time period as a period, and storing the second data with the second time period or the third time period. The first time period is less than the second time period, and the second time period is less than the third time period.
The method specifically comprises the step of judging whether the first data acquired by the data server belong to transient data or not. If so, storing transient data in a fourth time period which is more than the first time period by taking the first time period as a period, and eliminating transient data before the fourth time period. If not, the first data is stored by taking the first time period or the third time period as a period.
The method further comprises the step of obtaining accident recall data if the first data obtained by the data server are transient data and an accident occurs, wherein the accident recall data comprise transient data taking the first time period as a storage period in a fifth time period before the accident occurs and in a sixth time period after the accident occurs, and the fifth time period is smaller than or equal to the fourth time period. And generating an incident recall report from the incident recall data and storing the incident recall report.
The method further comprises the steps of storing first data by taking a first time period as a period and storing second data by taking a second time period as a period in a test, wherein the test comprises debugging and starting of the nuclear power plant unit. And storing the first data and the second data with the third time period as a period before the test or/and after the test.
The beneficial effects of the data acquisition and storage method provided by the embodiment of the invention are the same as those of the data acquisition and storage system in the embodiment.
Drawings
FIG. 1 is a block diagram of a data acquisition and storage system in accordance with an embodiment of the present invention;
FIG. 2 is a block diagram of another data acquisition and storage system in accordance with an embodiment of the present invention;
FIG. 3 is a block diagram of yet another data acquisition and storage system in accordance with an embodiment of the present invention;
FIG. 4 is a flow chart of a data collection and storage method according to an embodiment of the present invention;
FIG. 5 is a flowchart of another data collection and storage method according to an embodiment of the present invention.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings.
It is to be understood that the specific embodiments and figures described herein are merely illustrative of the invention, and are not limiting of the invention.
It is to be understood that the various embodiments of the invention and the features of the embodiments may be combined with each other without conflict.
It is to be understood that only the portions relevant to the present invention are shown in the drawings for convenience of description, and the portions irrelevant to the present invention are not shown in the drawings.
It should be understood that each unit and module in the embodiments of the present invention may correspond to only one physical structure, may be formed by a plurality of physical structures, or may be integrated into one physical structure.
It will be appreciated that, without conflict, the functions and steps noted in the flowcharts and block diagrams of the present invention may occur out of the order noted in the figures.
It is to be understood that the flowcharts and block diagrams of the present invention illustrate the architecture, functionality, and operation of possible implementations of systems, apparatuses, devices, methods according to various embodiments of the present invention. Where each block in the flowchart or block diagrams may represent a unit, module, segment, code, or the like, which comprises executable instructions for implementing the specified functions. Moreover, each block or combination of blocks in the block diagrams and flowchart illustrations can be implemented by hardware-based systems that perform the specified functions, or by combinations of hardware and computer instructions.
It should be understood that the units and modules related in the embodiments of the present invention may be implemented by software, or may be implemented by hardware, for example, the units and modules may be located in a processor.
Aiming at the problems that the existing nuclear power plant is inconvenient to view data with different time resolutions, limited in storage space and troublesome in expanding data sources, the embodiment of the invention provides a data acquisition and storage system and a data acquisition and storage method. In addition, by operating the control system, the data acquisition and storage system provided by the embodiment of the invention can acquire the data of all the devices, and is beneficial to expanding the data source. In addition, setting different storage periods for the data in different periods, deleting the data exceeding the fourth period, so as to reduce the storage amount of the data in a non-test stage or a stage of normal operation of the nuclear power plant equipment, and save the storage space under the condition of ensuring the accident recall function.
An embodiment of the present invention provides a data acquisition and storage system, as shown in fig. 1, the data acquisition and storage system 10 includes a data acquisition device 101 and a data server 102.
The data acquisition device 101 is respectively connected to the non-safety level field instrument 20 of the nuclear power plant and other control systems 40 of the nuclear power plant and is configured to acquire first data with a first period of time as a period. The first data includes data from hard-wired signals from other control systems 40 of the nuclear power plant and data from non-safety level field instruments 20 of the nuclear power plant. The other control systems 40 of the nuclear power plant comprise a safety level DCS, and the other control systems 40 of the nuclear power plant are connected to a safety level field instrument 401, and data of hard-line signals from the other control systems of the nuclear power plant may be from the safety level field instrument 401, for example. It will be appreciated that the safety and field instruments 401 and the non-safety level field instrument 20, respectively, may comprise a plurality of instruments. For example, as shown in fig. 2, the data acquisition device 101 may include a first IO board 1011, the first IO board 1011 may be a high-speed IO board, and an acquisition period of the first IO board 1011 may be a first period of time. In some embodiments, the first time period is 25ms.
In some embodiments, the period of data collection of the temperature sensor may be higher than the first period of time in the non-safety level field instrument 20, as the change in temperature is small and high speed collection is not required. For example, the data of the temperature sensor PT100 may take the second period as the acquisition period.
As shown in fig. 1, the data server 102 is connected with the operation control system 30 of the nuclear power plant, other control systems 40 of the nuclear power plant and the data acquisition device 101, wherein the operation control system 30 of the nuclear power plant comprises a non-safety level DCS, and the processing cycle of the data by the processor 301 of the non-safety level DCS of the nuclear power plant is a second time period. In some embodiments, the second time period ranges from [50ms,200ms ].
The data server 102 is configured to obtain the first data and the second data. And storing the first data with the first time period or the third time period as a period, and storing the second data with the second time period or the third time period, wherein the first time period is smaller than the second time period, and the second time period is smaller than the third time period.
The second data includes data of network signals from other control systems 40 of the nuclear power plant and data of the processor 301 of the non-safety level DCS in the operation control system 30 of the nuclear power plant. It will be appreciated that the processing period of the data of the network signals of the other control systems 40 of the nuclear power plant may also be the second time period. In some embodiments, the third time period may be a storage period of the database, such as 500ms or 1000ms.
For example, data from hard-wired signals from other control systems 40 of the nuclear power plant may be collected at a first time period.
In the above embodiment, the first data is data with the first time period as the acquisition period, and the second data is data with the second time period as the acquisition period, where the first data belongs to data with high time resolution, and the second data belongs to data with low time resolution. Through the data acquisition and storage system provided by the invention, an operator can view or call the first data and the second data in the master control room at the same time. And when the first data is stored, the first time period or the third time period can be selected to be used, and because the first time period is smaller than the second time period and the second time period is smaller than the third time period, the storage period of the first data can be smaller or larger, if the first time period is taken as the storage period, the storage capacity needs to be occupied, and if the third time period is taken as the storage period in an idle time period or an operation stability time period (such as when no test is performed), the storage requirement is met, and meanwhile, the occupation of the storage capacity is reduced, so that the storage space is saved. Similarly, when the second data is stored, the storage period can be selected, and the occupation of the storage capacity can be reduced while the storage requirement is met, so that the storage space is saved. In addition, the data acquisition and storage system provided by the invention is connected with the safety level DCS or the non-safety level DCS, so that most data from the nuclear power control system can be acquired, and the data source is convenient and rapid to expand. Therefore, the data server 102 can acquire data of different acquisition periods, and set the storage period according to the data of different acquisition periods, so that the integration level of data types and the flexibility of data storage are improved.
In the process of running and executing tests in the process of process profession, not all variables need to be collected at high speed, but only partial signals need to be collected at high speed, and in order to be capable of completely collecting data related to the same test, the storage burden of a system is not excessively increased, and the storage rate of each variable needs to be set. For example, in the shutdown non-shutdown test of 50% FP and 100% FP, the test requirement can be completely met by adopting the storage rate of 100ms for the temperature signal of the one-loop system.
In this case, the data server 102 is configured to determine whether the first data acquired by the data server belongs to transient data. If so, storing transient data in a fourth time period which is more than the first time period by taking the first time period as a period, and eliminating transient data before the fourth time period. If not, the first data is stored by taking the first time period or the third time period as a period.
Since the first period of time is relatively small, when the data server 102 stores data with the first period of time as a storage period, a large amount of data may be generated in the data server 102 in a short time, but if the data server 102 stores only transient data from the nuclear power plant in the fourth period of time, a large amount of storage space may be saved.
The fourth time period may be 30 minutes or 60 minutes, and the operator may set the fourth time period according to the specific situation of the nuclear power plant, and the specific value of the fourth time period is not limited in the present invention.
For example, when the system space is insufficient, a staff may be reminded to export data and transfer the data to other storage media through a meter control alarm.
The above-described embodiments may enable continuous and rapid monitoring and recording of nuclear island parameters and conventional island parameters.
In some embodiments, if the first data acquired by the data server 102 is transient data and an incident occurs, the data server 102 is configured to acquire incident recall data and generate an incident recall report from the incident recall data and store the incident recall report. The accident recall data comprise transient data taking the first time period as a storage period in a fifth time period before accident occurrence and a sixth time period after accident occurrence, wherein the fifth time period is smaller than or equal to the fourth time period.
Since the data server 102 stores only transient data of the last fourth period, the length of time that data before the occurrence of an accident can be retrieved is at most the fourth period, and thus the fifth period is smaller than the fourth period. For example, taking the fourth time period as 30 minutes as an example, when an accident occurs, data within 30 minutes before the accident occurs can be called, and the fifth time period can be 10 minutes, 15 minutes or 20 minutes. It will be appreciated that the generated incident recall report may be stored separately, and thus the data for the sixth time period after the incident occurred may be stored separately in the separate storage space for convenient staff recall. Therefore, the specific value of the sixth period is not limited to the specific value of the fourth period, for example, the fourth period is 30 minutes, and the sixth period may be 40 minutes or 60 minutes. The specific value of the sixth time period may also be set by the staff of the nuclear power plant according to the condition of the nuclear power plant.
The incidents may include, for example, a power outage incident, an incident to switch to a base load, or an incident to emergency trip. It can be appreciated that the staff can set transient data in the first data in advance according to experience so as to facilitate autonomous judgment of the system.
In some embodiments, if the same incident triggers multiple times, an incident recall report is generated from incident recall data for a fifth time period before the earliest incident to a sixth time period after the last incident. The staff can call the accident recall report at any time and analyze the accident recall report according to the data in the accident recall report so as to trace back the accident source.
In some embodiments, if the first data acquired by the data server 102 is not transient data, the data server 102 is configured to store the first data with the first time period as a period and store the second data with the second time period as a period during the test. And storing the first data and the second data with the third time period as a period before the test or/and after the test. The test comprises debugging and starting test of the nuclear power plant unit.
For example, the tests may include checking for adjustments to various automatic control loops that affect unit operation and protection equipment and various tests performed during commercial operation.
It will be appreciated that the staff may set the trial data in the first data in advance empirically. To facilitate analysis by the staff based on the test data, the operator may set the frequency of generation of the test report based on the test protocol and generate the test report by the data server 102 based on the set frequency of generation and the test data, e.g., the data server 102 may generate the test report based on the test data once every 10 minutes.
Illustratively, the data server 102 may be provided with data compression functionality, supporting setting compression ratios. For example, during a non-trial period, the data server 102 may store data at a set compression ratio. During the test, the data server 102 does not compress the data when stored.
By the above embodiment, the first data may be stored only during the test with the first time period as a period, the second data may be stored with the second time period as a period, and the first data and the second data may be stored with the third time period as a period before the test and after the test is completed. Therefore, the integrity and the comprehensiveness of data in the test can be ensured, and meanwhile, the storage space can be saved.
In some embodiments, as shown in fig. 3, the data collection and storage system provided in the embodiments of the present invention may further include an analysis workstation 103 and a printer 104, where the analysis workstation 103 and the printer 104 are connected to the data server 102 through a database agent 105, and a worker may call data and reports in the data server 102 at any time through the analysis workstation 103, and may print data or reports required by the worker through the printer 104.
The data acquisition and storage system provided by the embodiment of the invention can realize the functions of data acquisition, real-time data display, real-time data inquiry, real-time data attribute checking and modification, analog quantity overscan processing and switching value jitter processing. Not only can the use requirements of maintenance personnel in the test and accident analysis be met, but also the use requirements of operators in the main control room can be met.
The following describes a data acquisition and storage method provided by the embodiment of the invention.
An embodiment of the present invention provides a data collection and storage method, which is applied to the data collection and storage system of the above embodiment, as shown in fig. 4, and the method includes steps 401 to 403.
Step 401, collecting data of unsafe field instruments of a nuclear power plant.
Step 402, acquiring first data and second data.
The first data includes data from hard-wired signals from other control systems of the nuclear power plant of the data acquisition device and data from field instruments of the nuclear power plant. The second data includes data from network signals of other control systems of the nuclear power plant and data from processors in an operational control system of the nuclear power plant.
Step 403, storing the first data with the first time period or the third time period as a period, and storing the second data with the second time period or the third time period.
The first time period is less than the second time period, and the second time period is less than the third time period.
In some embodiments, as shown in fig. 5, the method further comprises step 501 and step 505.
Step 501, judging whether the first data acquired by the data server belongs to transient data. If yes, go to step 502, otherwise, go to step 503.
Step 502, taking the first time period as a period, storing transient data in the fourth time period recently, and eliminating transient data before the fourth time period.
In step 502, the fourth time period is greater than the first time period.
And in step 502, if an accident occurs, accident recall data is acquired, an accident recall report is generated from the accident recall data, and the accident recall report is stored.
The accident recall data includes transient data with the first period as a storage period for a fifth period before the accident occurs and a sixth period after the accident occurs. The fifth time period is less than or equal to the fourth time period.
Step 503, storing the first data with the first time period or the third time period as a period.
In some embodiments, the method further comprises storing the first data with the first time period as a period and storing the second data with the second time period as a period during the test. The first data and the second data are stored with the third time period as a period before the test or/and after the test. The test comprises debugging and starting test of the nuclear power plant unit.
The beneficial effects of the data acquisition and storage method provided by the embodiment of the present invention may refer to the beneficial effects of the data acquisition and storage system in the above embodiment, and are not described herein again.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
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| US7643864B2 (en) * | 2005-02-03 | 2010-01-05 | Case Western Reserve University | Adaptive imaging parameters with MRI |
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