CN107944729B - Equipment rotation analysis method and device based on aging index control - Google Patents
Equipment rotation analysis method and device based on aging index control Download PDFInfo
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Abstract
An equipment rotation analysis method and device based on aging index control are provided, the equipment rotation analysis method comprises the following steps: receiving field data of the power plant equipment acquired by the field acquisition equipment in real time through a photoelectric transmission medium; extracting time point data corresponding to an event before the equipment operates, an equipment operation event and an equipment shutdown event according to the field data, and storing the time point data into a database; detecting whether an equipment shutdown event exists in a database within a current or first set time period; if yes, forward and sequentially searching whether an event before the equipment operation and an event before the equipment operation which meet the set conditions exist or not according to the searched time point data of the equipment shutdown event as a reference; and if the events before the equipment runs and the events before the equipment runs meet the set conditions, recording the relevant information of the equipment rotation success. The invention can realize the automatic reminding, judgment and evaluation of the power plant equipment by regular rotation, and can accurately capture each event by utilizing the time sequence combination, thereby avoiding false alarm or missed alarm.
Description
Technical Field
The invention relates to a power plant equipment test technology, in particular to an equipment alternation analysis method and device based on aging index control.
Background
The power plant needs to supervise and monitor whether the operation of personnel is standardized or not in the production process, and the prior art mainly focuses on carrying out periodic test analysis on certain equipment of the power plant and carrying out estimation and guidance on the actual production process of the equipment. These are only the analysis and management to equipment, do not have the management analysis to personnel, can't manage and control personnel operation process and result, and all are not real-time management and control, and the processing of data is also comparatively single, does not have complicated logical operation, and only carries out the analysis to single equipment.
For example, the invention provides a method for determining key monitoring parameters and weight distribution of each parameter of complex equipment of a power plant, and the method is characterized in that historical data of the complex equipment in a normal operation state stored in a power plant SIS system are utilized, principal component analysis is carried out on all monitoring parameters of the equipment, the contribution rate of each parameter is obtained, the key monitoring parameters of the equipment are obtained, weight distribution is carried out on newly obtained parameters, a basis is provided for monitoring the complex equipment of the power plant, an equipment fault diagnosis model is guided to be established, and the safe operation of the power plant is facilitated. However, the invention is only the determination of the weight of the monitoring parameters, and has no specific analysis on the equipment parameters.
For example, the invention relates to a patent application of a plant-level multi-generator-set reliability online prediction method, which comprises the following steps: the method comprises the following specific steps: reading reliability event data of the plant-level generator set; calculating the reliability index of the plant-level generator set; calculating a maintenance coefficient rho (tij) of the plant-level generator set on line; tracking the variation trend of the reliability of the plant-level generator set; determining undetermined parameters eta j and mj of plant-level 1-N generator sets; calculating a planned outage coefficient POF (t (n +1) j) of the plant-level generator set; calculating an equivalent available coefficient EAP (t (n +1) j) of deducting plan outage of the plant-level generator set; calculating an equivalent available coefficient EAF (t (n +1) j) of the plant-level generator set; calculating an equivalent available coefficient WEAF of the weighted average of the plant-level generator sets; determining an evaluation criterion value of equivalent available coefficients of a plurality of plant-level generator sets; quantitatively evaluating the reliability of a plurality of plant-level generator sets; and printing an output result. The invention realizes the on-line prediction of the reliability of a plurality of generator sets in a factory level. The historical data stored by the generator set is analyzed, only the generator set equipment is targeted, and the timeliness is poor due to the historical data.
For example, the invention relates to a patent application of a method for determining the examination weight of indexes of small-index competition of a thermal power plant unit, which is characterized in that the historical consumption difference of the examined small indexes is calculated to obtain the consumption difference amount of each index, the consumption difference amount of each index is converted, and then the result of each index occupying the total consumption difference amount is calculated to determine the consumption difference weight and the weight ratio of each index, so that the power plant is guided to adjust the examination weight of each index to meet the requirement of fine management of the power plant. But it only aims at the small index competition index of the thermal power plant and does not relate to other important operation equipment, and the processing objects are different.
Disclosure of Invention
The embodiment of the invention provides an equipment rotation analysis method and device based on aging index control, which are used for realizing automatic reminding, judgment and evaluation of periodic rotation of power plant equipment, accurately capturing events every time and avoiding false alarm or missed alarm.
In order to achieve the above object, an embodiment of the present invention provides an apparatus rotation analysis method based on aging index control, where the apparatus rotation analysis method includes:
receiving field data of the power plant equipment acquired by the field acquisition equipment in real time through a photoelectric transmission medium;
according to the event before the field data extraction equipment is operated, the equipment operation event and the time point data corresponding to the equipment shutdown event, storing the time point data into a database;
detecting whether an equipment outage event exists in the database within the current or first set time period;
if yes, forward and sequentially searching whether an event before the equipment operation and an event before the equipment operation which meet the set conditions exist or not according to the searched time point data of the equipment shutdown event as a reference;
and if the events before the equipment runs and the events before the equipment runs meet the set conditions, recording the relevant information of the equipment rotation success.
In one embodiment, the device rotation analysis method further includes: and searching whether the work of the equipment rotation is not performed due to expiration, and if so, sending a prompt to related personnel.
In one embodiment, the time point data corresponding to the event before the device runs is the starting time and the ending time of the event before the device runs; the time point data corresponding to the equipment operation event is the starting time and the ending time of the equipment operation event; and the time point data corresponding to the equipment shutdown event is the starting time of the equipment shutdown event.
In an embodiment, sequentially searching forward whether an event before device operation and an event before device operation that satisfy a set condition exist based on the time point data of the searched device shutdown event includes:
judging whether an equipment operation event exists in a first set time interval before the starting time of the equipment shutdown event by taking the starting time of the equipment shutdown event as a reference;
if the event exists, whether the event before the equipment operation exists in a second set time interval before the starting time of the searched equipment operation event is judged by taking the starting time of the searched equipment operation event as a reference.
In one embodiment, if the equipment operation event and/or the equipment operation event which meet the set conditions do not exist, a prompt is sent to the relevant personnel of the test.
And if the change rate is not within the preset threshold range, sending information to test related personnel to remind the test related personnel to analyze the reason of the test failure.
In one embodiment, the device rotation analysis method further includes:
drawing trend graphs of different data according to the field data;
and sending the trend graph to a man-machine interaction module.
In order to achieve the above object, an embodiment of the present invention provides an apparatus rotation analysis apparatus based on aging index control, including:
the data acquisition unit is used for receiving field data of the power plant equipment acquired by the field acquisition equipment in real time through a photoelectric transmission medium;
the data extraction unit is used for storing the time point data into a database according to the time point data corresponding to the on-site data extraction equipment pre-operation event, the equipment operation event and the equipment shutdown event;
the detection unit is used for detecting whether an equipment shutdown event exists in the database within the current or first set time period;
the searching unit is used for sequentially searching whether an event before the equipment operation and an event before the equipment operation which meet the set conditions exist or not forward according to the searched time point data of the equipment outage event as a reference;
and the recording unit is used for recording the relevant information of the successful rotation of the equipment.
In one embodiment, the method further comprises: and the reminding sending unit is used for sending a reminder to related personnel when the equipment rotation is not carried out due.
In one embodiment, the time point data corresponding to the event before the device runs is the starting time and the ending time of the event before the device runs; the time point data corresponding to the equipment operation event is the starting time and the ending time of the equipment operation event; and the time point data corresponding to the equipment shutdown event is the starting time of the equipment shutdown event.
In one embodiment, the lookup unit includes:
the first judgment module is used for judging whether the equipment operation event exists in a first set time interval before the starting time of the equipment outage event by taking the starting time of the equipment outage event as a reference;
and the second judgment module is used for judging whether the event before the equipment operation exists in a second set time interval before the starting time of the searched equipment operation event by taking the starting time of the searched equipment operation event as a reference.
The invention can realize the automatic reminding, judgment and evaluation of the power plant equipment by regular rotation, and can accurately capture each event by utilizing the time sequence combination, thereby avoiding false alarm or missed alarm.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first flowchart of an apparatus rotation analysis method based on aging index control according to an embodiment of the present invention;
FIG. 2 is a flow chart of a device rotation analysis method based on aging index control according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating an embodiment of a method for device rotation analysis;
FIG. 4 is a schematic diagram of the logic for determining the alternate operation of an EH oil pump in accordance with an embodiment of the present invention;
FIG. 5 is a trend graph of an embodiment of the present invention;
FIG. 6 is a data presentation diagram according to an embodiment of the present invention;
FIG. 7 is a block diagram of an apparatus rotation analysis device based on aging index control according to an embodiment of the present invention;
fig. 8 is a block diagram of a lookup unit based on age indicator control according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart of an apparatus rotation analysis method based on aging index control according to an embodiment of the present invention, and as shown in fig. 1, the apparatus rotation analysis method includes:
s101: receiving field data of the power plant equipment acquired by the field acquisition equipment in real time through a photoelectric transmission medium; the field data may include operating conditions, time, current, voltage, temperature, pressure, vibration, etc., depending on the particular device and operating conditions.
S102: according to the event before the field data extraction equipment is operated, the equipment operation event and the time point data corresponding to the equipment shutdown event, storing the time point data into a database;
s103: detecting whether an equipment outage event exists in the database within the current or first set time period; the first set time period may be 5 minutes, but the invention is not limited thereto.
S104: if yes, forward and sequentially searching whether an event before the equipment operation and an event before the equipment operation which meet the set conditions exist or not according to the searched time point data of the equipment shutdown event as a reference;
s105: and if the events before the equipment runs and the events before the equipment runs meet the set conditions, recording the relevant information of the equipment rotation success.
The execution subject of the flow shown in fig. 1 may be a power plant background server. As can be seen from the process shown in fig. 1, the event before the device runs, the device running event, and the time point data corresponding to the device shutdown event are extracted from the collected field data and stored in the database, whether the device shutdown event exists in the database within the current or first set time period is detected, whether the device event before the device runs and the device running event which satisfy the set conditions exist is sequentially searched forward based on the searched time point data of the device shutdown event, and if the device event before the device runs and the device running event exist, the information related to the successful device rotation is recorded. By the method, automatic reminding, judgment and evaluation of the regular rotation of the power plant equipment can be realized, and time sequence combination is utilized.
In order to ensure that the power plant equipment can normally run, the invention can realize the expiration reminding function of the test, search whether the equipment rotation work is not carried out due or not, and send the reminding to the related personnel if the equipment rotation work is not carried out due or not.
As an embodiment of the present invention, the time point data corresponding to the event before the device runs is the start time and the end time of the event before the device runs; the time point data corresponding to the equipment operation event is the starting time and the ending time of the equipment operation event; and the time point data corresponding to the equipment shutdown event is the starting time of the equipment shutdown event.
In S103, it may be detected whether an equipment outage event exists in the database at present, and if the current equipment outage event is triggered, whether an equipment pre-operation event and an equipment operation event that satisfy a set condition exist is sequentially searched forward based on the time point data of the found current equipment outage event. Or detecting whether an equipment outage event exists in the database within a set time period, if the equipment outage event is triggered within the set time period, and sequentially searching whether an equipment operation event and an equipment operation event which meet set conditions exist before the equipment operation according to the searched time point data of the current equipment outage event as a reference.
As an embodiment of the present invention, as shown in fig. 2, S104 includes the following steps:
s201: judging whether an equipment operation event exists in a first set time interval before the starting time of the equipment shutdown event by taking the starting time of the equipment shutdown event as a reference;
s202: if the event exists, whether the event before the equipment operation exists in a second set time interval before the starting time of the searched equipment operation event is judged by taking the starting time of the searched equipment operation event as a reference.
And if the device pre-operation event and/or the device operation event meeting the set conditions are detected to be absent in the S202, sending a prompt to the relevant personnel of the test.
If it is detected in S202 that there is a device pre-operation event and/or a device operation event that satisfies the set condition, information related to device rotation success may be recorded, where the information related to device rotation success may include: the name of the shift device, the model and the number of the shift device, and the like, the start time of the device operation event may be set as the device shift start time, the start time of the device shutdown event may be set as the device shift end time, and the device shift start time and the device shift end time may be stored.
If the device pre-operation event and/or the device operation event meeting the set conditions are detected in the step S202, a trend graph of different data can be drawn according to the field data, and the trend graph is sent to the man-machine interaction module. The trend graph can be processed according to methods of peak value, valley value, average value and the like, the equipment rotation work of the time is evaluated according to factory-level or industry standards, and the evaluation result can be compared with the evaluation result of the same rotation work in history.
Fig. 3 is a specific flowchart of an apparatus rotation analysis method according to an embodiment of the present invention, as shown in fig. 3, the present invention may scan and compare dates that all regular rotation operations must be completed every day for rotation of power plant apparatuses, and if a certain apparatus rotation operation is close to a date that requires completion of the regular rotation operation, which is X (X may be greater than or equal to zero), the present invention may search field data stored in a database to query whether the apparatus rotation operation has been completed, and if so, end the process; if the equipment rotation work is not finished, a reminder can be generated and related personnel or users of the reminder can be sent for the users to view.
The following describes the apparatus rotation analysis method according to the present invention, taking the operation of the EH oil pump as an example.
The EH oil pumps can determine the running states of the two EH oil pumps after judging whether the motor current is larger than a certain proper numerical value or not according to the on-position or off-position signals of the switches and the AND in the logic algorithm. As shown in fig. 4, wherein ≧ 20 in the small circle indicates that the current is greater than or equal to 20A, and the large circle indicates the operation of the EH oil pump # 1 and EH oil pump # 2, the current, the EH oil bus oil pressure, and other data; STEP1, STEP2, and STEP3 correspond to a device pre-operation event (event 1), a device operation event (event 2), and a device shutdown event (event 3), respectively.
After the data transmitted to the cluster level on site is put in storage, the logic shown in fig. 4 is used for judgment according to the self operation characteristics of the equipment. As shown in fig. 4, when the device status is determined, the start and stop status and the time stamp of the monitoring device are recorded in real time, and each event is stored in the database independently. Since the rotation process is a fixed normalized operation process, namely: one of the devices always operates normally (denoted "event 1"); the standby equipment is started simultaneously, the two equipment which are standby for each other run simultaneously (denoted as 'event 2'), and then the equipment which normally runs before the stop of the operation (denoted as 'event 3'). When the 'event 3' is triggered, if the 'event 2' is ended in the first 60 seconds of the 'event 3' starting time, continuing to search for the 'event 1', otherwise, ending the judgment process and not processing; if the end of the time 1 before the start time of the event 2 exists, the three events are considered to complete a time sequence chain, and a successful rotation process is judged. Otherwise, ending the judging process.
By combining the logic, the system can automatically remind the user of scheduled work which is about to expire and is not carried out, and can supervise field workers to complete the scheduled work on time. All regular alternate work in the power plant is fixed date, and when the set date of a certain alternate work is close to the set date, the alternate work is not grabbed by the system, and then the system sends out a prompt to related personnel in the system. Requiring it to complete the rotation as quickly as possible.
The invention identifies regular work records by automatically capturing real-time data. After a certain shift operation is finished, the related parameters before and after the shift operation in a certain period of time are recorded and drawn into a trend graph, as shown in fig. 5. And processing the recorded data by mathematical processing means such as peak value, valley value, average value and the like according to a trend graph or automatically captured data, evaluating the round shift work according to factory-level or industrial standards, and comparing the evaluation result with the evaluation result of the same round shift work in history.
The data in the trend chart 5 is derived from the database, the data in the database corresponding to the time of the trend chart is called out, and the data can be obtained by calculating the average value, the maximum value and the like through a computer according to the requirements of the time period in the table header of the table below, so that the data required to be displayed in the chart 6 can be obtained.
The invention can realize the automatic reminding, judgment and evaluation of the power plant equipment by regular rotation, and can accurately capture each event by utilizing the time sequence combination, thereby avoiding false alarm or missed alarm.
Based on the same application concept as the above-mentioned device rotation analysis method, the present application provides a device rotation analysis apparatus, as described in the following embodiments. Because the principle of the device rotation analysis device for solving the problems is similar to that of the device rotation analysis method, the device rotation analysis device can be implemented by the device rotation analysis method, and repeated parts are not described again.
Fig. 7 is a block diagram of a device rotation analysis apparatus based on aging index control according to an embodiment of the present invention, where the device rotation analysis apparatus includes:
the data acquisition unit 701 is used for receiving field data of the power plant equipment acquired by the field acquisition equipment in real time through a photoelectric transmission medium;
a data extraction unit 702, configured to store time point data corresponding to an event before the field data extraction device operates, an event during the device operates, and an event during the device shutdown into a database;
a detecting unit 703, configured to detect whether an equipment shutdown event exists in the database within a current or first set time period;
a searching unit 704, configured to forward and sequentially search whether an event before device operation and an event before device operation that meet a set condition exist based on the time point data of the searched device shutdown event;
the recording unit 705 is configured to record information about successful rotation of the device.
As an embodiment of the present invention, the apparatus rotation analysis device further includes: and the reminding sending unit is used for sending a reminder to related personnel when the equipment rotation is not carried out due.
As an embodiment of the present invention, the time point data corresponding to the event before the device runs is the start time and the end time of the event before the device runs; the time point data corresponding to the equipment operation event is the starting time and the ending time of the equipment operation event; and the time point data corresponding to the equipment shutdown event is the starting time of the equipment shutdown event.
As an embodiment of the present invention, as shown in fig. 8, the search unit 704 includes:
a first determining module 801, configured to determine, based on a start time of an equipment outage event, whether an equipment operation event exists within a first set time interval before the start time of the equipment outage event;
the second determining module 802 is configured to determine, based on the start time of the found device operation event, whether a pre-device operation event exists within a second set time interval before the start time of the found device operation event.
The invention can realize the automatic reminding, judgment and evaluation of the power plant equipment by regular rotation, and can accurately capture each event by utilizing the time sequence combination, thereby avoiding false alarm or missed alarm.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. An equipment rotation analysis method based on aging index control is characterized by comprising the following steps:
receiving field data of the power plant equipment acquired by the field acquisition equipment in real time through a photoelectric transmission medium;
according to the event before the field data extraction equipment is operated, the equipment operation event and the time point data corresponding to the equipment shutdown event, storing the time point data into a database;
detecting whether an equipment outage event exists in the database within the current or first set time period;
if yes, forward and sequentially searching whether an event before the equipment operation and an event before the equipment operation which meet the set conditions exist or not according to the searched time point data of the equipment shutdown event as a reference;
if the event before the equipment operation and the equipment operation event which meet the set conditions exist, recording the relevant information of the equipment rotation success;
after a certain alternate work is finished, recording related parameters in a period of time before and after the alternate work, and drawing the parameters into a trend graph; and processing the recorded data by a mathematical processing means of peak value, valley value and average value according to a trend graph or automatically captured data, evaluating the alternate work according to factory or industry standards, and comparing the evaluation result with the evaluation result of the same alternate work in history.
2. The device rotation analysis method of claim 1, further comprising: and searching whether the work of the equipment rotation is not performed due to expiration, and if so, sending a prompt to related personnel.
3. The equipment rotation analysis method according to claim 1, wherein the time point data corresponding to the event before the equipment operation is the start time and the end time of the event before the equipment operation; the time point data corresponding to the equipment operation event is the starting time and the ending time of the equipment operation event; and the time point data corresponding to the equipment shutdown event is the starting time of the equipment shutdown event.
4. The equipment rotation analysis method according to claim 3, wherein the step of sequentially searching forward whether an equipment pre-operation event and an equipment operation event which meet set conditions exist based on the time point data of the searched equipment shutdown event comprises the steps of:
judging whether an equipment operation event exists in a first set time interval before the starting time of the equipment shutdown event by taking the starting time of the equipment shutdown event as a reference;
if the event exists, whether the event before the equipment operation exists in a second set time interval before the starting time of the searched equipment operation event is judged by taking the starting time of the searched equipment operation event as a reference.
5. The equipment rotation analysis method according to claim 1, wherein if no equipment operation event and/or equipment operation event meeting set conditions exists, a prompt is sent to test related personnel.
6. The device rotation analysis method of claim 1, further comprising:
drawing trend graphs of different data according to the field data;
and sending the trend graph to a man-machine interaction module.
7. An equipment rotation analysis device based on aging index control is characterized by comprising:
the data acquisition unit is used for receiving field data of the power plant equipment acquired by the field acquisition equipment in real time through a photoelectric transmission medium;
the data extraction unit is used for storing the time point data into a database according to the time point data corresponding to the on-site data extraction equipment pre-operation event, the equipment operation event and the equipment shutdown event;
the detection unit is used for detecting whether an equipment shutdown event exists in the database within the current or first set time period;
the searching unit is used for sequentially searching whether an event before the equipment operation and an event before the equipment operation which meet the set conditions exist or not forward according to the searched time point data of the equipment outage event as a reference;
the recording unit is used for recording the related information of the successful rotation of the equipment; after a certain alternate work is finished, recording related parameters in a period of time before and after the alternate work, and drawing the parameters into a trend graph; and processing the recorded data by a mathematical processing means of peak value, valley value and average value according to a trend graph or automatically captured data, evaluating the alternate work according to factory or industry standards, and comparing the evaluation result with the evaluation result of the same alternate work in history.
8. The device rotation analysis apparatus of claim 7, further comprising: and the reminding sending unit is used for sending a reminder to related personnel when the equipment rotation is not carried out due.
9. The apparatus rotation analysis device according to claim 7, wherein the time point data corresponding to the event before the apparatus operation is the start time and the end time of the event before the apparatus operation; the time point data corresponding to the equipment operation event is the starting time and the ending time of the equipment operation event; and the time point data corresponding to the equipment shutdown event is the starting time of the equipment shutdown event.
10. The device rotation analysis apparatus according to claim 9, wherein the search unit comprises:
the first judgment module is used for judging whether the equipment operation event exists in a first set time interval before the starting time of the equipment outage event by taking the starting time of the equipment outage event as a reference;
and the second judgment module is used for judging whether the event before the equipment operation exists in a second set time interval before the starting time of the searched equipment operation event by taking the starting time of the searched equipment operation event as a reference.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103630869A (en) * | 2013-11-29 | 2014-03-12 | 国网安徽省电力公司 | Clustering algorithm-based exceptional event analysis method for evaluating whole state of electric meter |
| CN207472304U (en) * | 2017-09-25 | 2018-06-08 | 北京能源集团有限责任公司 | Power plant job rotating monitoring device |
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| US7966139B2 (en) * | 2008-01-23 | 2011-06-21 | Atomic Energy Council-Institute Of Nuclear Energy Research | Apparatus for monitoring the maintenance of systems in a nuclear power plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630869A (en) * | 2013-11-29 | 2014-03-12 | 国网安徽省电力公司 | Clustering algorithm-based exceptional event analysis method for evaluating whole state of electric meter |
| CN207472304U (en) * | 2017-09-25 | 2018-06-08 | 北京能源集团有限责任公司 | Power plant job rotating monitoring device |
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