CN112636476B - Remote measurement data analysis method and device for transformer substation - Google Patents
Remote measurement data analysis method and device for transformer substation Download PDFInfo
- Publication number
- CN112636476B CN112636476B CN202011610460.8A CN202011610460A CN112636476B CN 112636476 B CN112636476 B CN 112636476B CN 202011610460 A CN202011610460 A CN 202011610460A CN 112636476 B CN112636476 B CN 112636476B
- Authority
- CN
- China
- Prior art keywords
- telemetry
- change time
- transformer substation
- time
- interval
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/24—Querying
- G06F16/245—Query processing
- G06F16/2458—Special types of queries, e.g. statistical queries, fuzzy queries or distributed queries
- G06F16/2462—Approximate or statistical queries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Power Engineering (AREA)
- Theoretical Computer Science (AREA)
- Computational Linguistics (AREA)
- Software Systems (AREA)
- Data Mining & Analysis (AREA)
- Databases & Information Systems (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Fuzzy Systems (AREA)
- Selective Calling Equipment (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a telemetry data analysis method and device for a transformer substation, which are characterized in that telemetry data are taken out from a message document of the transformer substation received from the previous day, data analysis is carried out according to transformer substation intervals, the telemetry change times of each transformer substation interval and the telemetry change time of each time are counted, the average telemetry change time of each transformer substation interval, the time proportion of the telemetry change time larger than the average telemetry change time and the telemetry change time proportion are counted further, and a transformer substation interval with longer telemetry change time of a measurement and control device is concerned and an alarm is carried out, so that data analysis can be carried out by taking the transformer substation interval as a unit, the measurement and control device of each transformer substation interval is monitored, the method is more refined, and the alarm accuracy is improved.
Description
Technical Field
The invention relates to the technical field of data analysis, in particular to a telemetry data analysis method and device of a transformer substation.
Background
In the design and construction of the transformer substation, the transformer substation is formed by combining parts such as an incoming line, a main transformer high voltage, a main transformer low voltage outgoing line and the like, and each part is called a transformer substation interval. The substation bay is a part of the substation, comprising ultra high (or high) voltage switching devices and connections of power lines, power transformers, etc. to the substation bus bar system, as well as protection, control and measurement and control devices of the power lines, power transformers, etc.
The telemetering data of current, voltage, power and the like of each transformer substation interval are real-time data detected by a measurement and control device of the transformer substation interval through a sensor, and are collected from the measurement and control device of each transformer substation interval through a telemechanical device of the transformer substation and then are sent to a power dispatching automaton system (Supervisory Control And Data Acquisition, SCADA). Therefore, a power system dispatcher can monitor the whole network in real time through the telemetry data, and meanwhile, a voltage reactive power control system (Advanced Video Coding, AVC) can also refer to the telemetry data to regulate a transformer substation of the whole network, so that the power grid is ensured to run at a safe and stable level.
Because the telemetry data capacity of the telemetry device which is sent in the same period is limited, a certain mechanism is often set to ensure that important telemetry data is sent preferentially, but the telemetry data cannot be sent timely because of the conditions of slow acquisition and more faults of the measurement and control devices of some transformer substation intervals, and a power system dispatcher cannot know the real-time operation conditions of the transformer substation intervals timely from the SCADA, wherein telemetry such as 10kV bus voltage and the like can be involved, reference data of AVC cannot be refreshed timely, and blind adjustment to a certain extent is easy to occur.
The corresponding measures, such as manual assembly or notification of substation operators to check the telemetering device and the measurement and control device of a certain substation interval, can be taken only after a power system dispatcher discovers that telemetry data of the certain substation interval is unchanged from an alarm window or a primary wiring diagram, and the manual checking or alarming mode is lagging and low in efficiency, so that a great amount of manpower and maintenance cost are consumed.
In the prior art, china patent application with publication No. 2017.09.12 and publication No. CN107153915A proposes a method and a system for automatically detecting unchanged telemetry data of a transformer substation, and the method and the system can timely find out the unqualified telemetry data of the transformer substation to alarm by detecting the telemetry data generated before and after the same transformer substation for comparison. However, the technical scheme is that data analysis is performed by taking a transformer substation as a unit, so that the data analysis is not fine enough, and the alarm accuracy is low.
Disclosure of Invention
The invention provides a telemetry data analysis method and device for a transformer substation, which are used for overcoming the defect of low alarm accuracy in the prior art, and can be used for carrying out data analysis by taking transformer substation intervals as units, monitoring measurement and control devices of the transformer substation intervals, and further improving the alarm accuracy.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the embodiment of the invention discloses a telemetry data analysis method of a transformer substation, which comprises the following steps:
s1: acquiring a message document of a transformer substation received in the previous day, and acquiring telemetry data corresponding to the type identifier according to the type identifier of each frame of message of the message document;
s2: when each frame of message is read, according to the telemetry object point number in the frame of message, finding out the message of the next frame of telemetry data change corresponding to the telemetry object point number, calculating the time interval of two frames of messages as the telemetry change time of the transformer substation interval corresponding to the telemetry object point number, counting the telemetry change time into the accumulated total telemetry change time of the transformer substation interval, adding one to the accumulated telemetry change times of the transformer substation interval, continuing to read the next frame of message, and repeatedly executing the steps until all messages of the transformer substation are traversed, thereby obtaining the telemetry change times of each transformer substation interval and the telemetry change time of each time;
s3: according to the telemetry change times of each transformer substation interval and the telemetry change time of each time, the average telemetry change time of each transformer substation interval, the frequency proportion of the telemetry change time being larger than the average telemetry change time and the telemetry change frequency proportion are counted;
s4: if the average telemetry change time of any transformer substation interval is larger than a first time threshold, the number of times of the telemetry change time larger than the average telemetry change time is larger than a first designated proportion, and the number of times of the telemetry change is smaller than a second designated proportion, the longer telemetry change time of a measurement and control device of the transformer substation interval is judged, and alarm information is sent out for the measurement and control device of the transformer substation interval, wherein the first time threshold is determined according to a change time index of telemetry data.
According to the technical scheme, telemetry data are taken out from the message file of the transformer substation received from the previous day, the data are divided and analyzed according to the transformer substation intervals, the telemetry change times of each transformer substation interval and the telemetry change time of each time are counted, the average telemetry change time of each transformer substation interval, the frequency proportion of the telemetry change time being larger than the average telemetry change time and the telemetry change frequency proportion are further counted, the transformer substation interval with longer telemetry change time of the measurement and control device is concerned and the alarm is carried out, so that the data analysis can be carried out by taking the transformer substation interval as a unit, the measurement and control device of each transformer substation interval is monitored, the accuracy is further improved, and the alarm accuracy is further improved.
Further, step S3 includes: the following steps are executed for each substation interval:
dividing the accumulated total telemetry change time by the telemetry change times to obtain average telemetry change time;
dividing the number of times that the telemetry change time is greater than the average telemetry change time by the number of times of telemetry change to obtain a number of times duty cycle that the telemetry change time is greater than the average telemetry change time;
dividing the number of telemetry changes by the total telemetry data amount to obtain a telemetry change ratio.
Further, after step S2, the method further includes the following steps:
according to the telemetry change time, calculating the maximum telemetry change time of each transformer substation interval;
if the maximum telemetry change time of any transformer substation interval is larger than a second time threshold, judging that a telemetering device of a transformer substation leaks telemetry data of the transformer substation interval, and sending alarm information for indicating that the telemetering device leaks telemetry data; wherein the second time threshold is determined based on a time interval during which telemetry data is uploaded by the telematic device.
Further, after step S2, the method further includes the following steps:
if the telemetry change time of any one of the transformer substation intervals is larger than a third time threshold and smaller than the second time threshold, judging that the telemetering device delays and uploads telemetry data of the transformer substation interval, and sending alarm information for indicating the telemetering device to delay and uploads the telemetry data; the third time threshold is determined according to the time-consuming duration of the full data uploaded by the telemechanical device.
Further, in step S2, after the calculating the time interval of the two frames of messages as the telemetry change time of the substation interval corresponding to the telemetry object point number, the method further includes:
comparing the telemetry change time of the transformer substation interval with the recorded maximum telemetry change time of the transformer substation interval, and if the telemetry change time is larger than the recorded maximum telemetry change time, replacing the telemetry change time with the new maximum telemetry change time and storing the new maximum telemetry change time into a database;
and comparing the telemetry change time of the transformer substation interval with the recorded minimum telemetry change time of the transformer substation interval, and if the telemetry change time is smaller than the recorded minimum telemetry change time, replacing the telemetry change time with the new minimum telemetry change time and storing the new minimum telemetry change time into a database.
A second aspect of an embodiment of the present invention discloses a telemetry data analysis device for a substation, including:
the acquisition unit is used for acquiring the message document of the transformer substation received in the previous day and acquiring telemetry data corresponding to the type identifier according to the type identifier of each frame of message of the message document;
the reading unit is used for finding out a message with changed telemetry data of the next frame corresponding to the telemetry object point number according to the telemetry object point number in each frame of message when reading each frame of message, calculating the time interval of the two frames of messages as telemetry change time of a transformer substation interval corresponding to the telemetry object point number, counting the telemetry change time into the accumulated total telemetry change time of the transformer substation interval, accumulating the telemetry change times of the transformer substation interval, adding one, continuing to read the next frame of message, and repeatedly executing the operation until all messages of the transformer substation are traversed, so as to obtain the telemetry change times of each transformer substation interval and the telemetry change time of each time;
the statistics unit is used for counting the average telemetry change time of each transformer substation interval, the frequency proportion of the telemetry change time which is larger than the average telemetry change time and the telemetry change frequency proportion according to the telemetry change times of each transformer substation interval and the telemetry change time of each time;
the first alarm unit is used for judging that the telemetry change time of the measurement and control device of any transformer substation interval is longer when the average telemetry change time of the transformer substation interval is larger than a first time threshold value, the frequency ratio of the telemetry change time to the average telemetry change time is larger than a first designated proportion and the frequency ratio of the telemetry change time to the telemetry change time is smaller than a second designated proportion, and sending alarm information to the measurement and control device of the transformer substation interval, wherein the first time threshold value is determined according to the change time index of telemetry data.
Further, the statistics unit is specifically configured to perform the following operations for each substation interval:
dividing the accumulated total telemetry change time by the telemetry change times to obtain average telemetry change time;
dividing the number of times that the telemetry change time is greater than the average telemetry change time by the number of times of telemetry change to obtain a number of times duty cycle that the telemetry change time is greater than the average telemetry change time;
dividing the number of telemetry changes by the total telemetry data amount to obtain a telemetry change ratio.
Further, the system also comprises a second alarm unit, a first alarm unit and a second alarm unit, wherein the second alarm unit is used for counting the maximum telemetry change time of each transformer substation interval according to the telemetry change time after the reading unit obtains the telemetry change times of each transformer substation interval and the telemetry change time of each time; and when the maximum telemetry change time of any transformer substation interval is larger than a second time threshold, judging that the telemetering data of the transformer substation interval is missed by a telemetering device of the transformer substation, and sending out alarm information for indicating that the telemetering data is missed by the telemetering device, wherein the second time threshold is determined according to the time interval of the telemetering data uploaded by the telemetering device.
Further, the second alarm unit is further configured to determine that the telemetering device delays and uploads the telemetering data of the transformer substation interval, and send alarm information for indicating that the telemetering device delays and uploads the telemetering data, after the reading unit obtains the telemetering change times of each transformer substation interval and the telemetering change time of each time, if the telemetering change time of any one transformer substation interval is greater than a third time threshold and less than the second time threshold; the third time threshold is determined according to the time-consuming duration of the full data uploaded by the telemechanical device.
Further, the remote control system further comprises a recording unit, wherein the recording unit is used for comparing the remote control change time of the transformer substation interval with the recorded maximum remote control change time of the transformer substation interval after the time interval of the two frames of messages is calculated by the reading unit to be used as the remote control change time of the transformer substation interval corresponding to the remote control object point number, and if the time interval is larger than the recorded maximum remote control change time, the time interval is replaced by the new maximum remote control change time and is stored in the database; and comparing the telemetry change time of the transformer substation interval with the recorded minimum telemetry change time of the transformer substation interval, and if the telemetry change time is smaller than the recorded minimum telemetry change time, replacing the telemetry change time with the new minimum telemetry change time and storing the new minimum telemetry change time into a database.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that: the invention discloses a telemetry data analysis method and device for a transformer substation, which are characterized in that telemetry data are taken out from a message document of the transformer substation received from the previous day, data analysis is carried out according to transformer substation intervals, the telemetry change times of each transformer substation interval and the telemetry change time of each time are counted, the average telemetry change time of each transformer substation interval, the time proportion of the telemetry change time larger than the average telemetry change time and the telemetry change time proportion are counted further, and a transformer substation interval with longer telemetry change time of a measurement and control device is concerned and an alarm is carried out, so that data analysis can be carried out by taking the transformer substation interval as a unit, the measurement and control device of each transformer substation interval is monitored, the method is more refined, and the alarm accuracy is improved.
Drawings
Fig. 1 is a flowchart of a telemetry data analysis method of a substation according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a telemetry data analysis device of a substation according to an embodiment of the present invention.
Wherein: 201. an acquisition unit; 202. a reading unit; 203. a statistics unit; 204. a first alarm unit.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
the technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, the present embodiment provides a telemetry data analysis method of a substation, including the following steps:
s1: and acquiring the message document of the transformer substation received in the previous day, and acquiring telemetry data corresponding to the type identifier according to the type identifier of each frame of message of the message document.
In the embodiment of the invention, a huge-capacity database can be stored in a history server of the SCADA, a historical message document can be stored in the database for a long time, the message document comprises a plurality of frames of messages, all data (namely running state data) of a transformer substation are recorded in each frame of messages, the data comprise remote control, remote measurement, remote signaling and the like, and the remote measurement data comprise each numerical value refreshing time and corresponding numerical value of remote measurement information. Therefore, in step S1, the message document of the transformer substation received the day before may be specifically retrieved from the database for offline analysis.
S2: when each frame of message is read, a message with the change of the telemetry data of the next frame corresponding to the telemetry object point number is found according to the telemetry object point number in the frame of message, the time interval of the two frames of messages is calculated to be used as the telemetry change time of the transformer substation interval corresponding to the telemetry object point number, the telemetry change time is counted into the accumulated total telemetry change time of the transformer substation interval, the accumulation of the telemetry change times of the transformer substation interval is added one, the next frame of message is continuously read, the steps are repeatedly executed until all messages of the transformer substation are traversed, and the telemetry change times of each transformer substation interval and the telemetry change time of each time are obtained.
It should be noted that, each frame of message corresponds to a telemetry object point number, and the telemetry object point number is used for indicating to which transformer substation interval the telemetry data on the corresponding message belongs. Therefore, multi-frame telemetry data of the transformer substation can be divided according to the telemetry object point number of each frame of message and the transformer substation interval.
Specifically, the multi-frame message of the transformer substation is directly subjected to traversal reading, the multi-frame message is firstly read from a first frame message, the message with the change of the next frame of telemetry data corresponding to the telemetry object point number is found according to the telemetry object point number of the frame message, the transformer substation interval corresponding to the telemetry object point number is determined as the transformer substation interval to which the two frames of messages belong, the time interval of the two frames of messages is calculated as the telemetry change time of the transformer substation interval, the telemetry change time is counted into the accumulated total telemetry change time of the transformer substation interval, the telemetry change time of the transformer substation interval is accumulated and added by one, the second frame message is continuously read, and the telemetry change times of each transformer substation interval and the telemetry change time of each time can be obtained after traversing all the messages of the transformer substation.
Therefore, the telemetry change time and the accumulated telemetry change times can be calculated, the telemetry data are divided according to the transformer substation intervals, and the telemetry change times of each transformer substation interval and the telemetry change time of each time are finally obtained.
Optionally, in step S2, after calculating the time interval of two frames of messages as the telemetry change time of the transformer substation interval corresponding to the telemetry object point number, the telemetry change time of the transformer substation interval may be compared with the recorded maximum telemetry change time of the transformer substation interval, and if the time interval is greater than the recorded maximum telemetry change time, the time interval is replaced with a new maximum telemetry change time and stored in the database; and comparing the telemetry change time of the transformer substation interval with the recorded minimum telemetry change time of the transformer substation interval, and if the telemetry change time is smaller than the recorded minimum telemetry change time, replacing the telemetry change time with the new minimum telemetry change time and storing the new minimum telemetry change time into a database.
The method comprises the steps of recording the maximum telemetry change time and the minimum telemetry change time of each transformer substation interval in a database continuously, wherein the minimum telemetry change time can be used for indicating the running state of a measurement and control device of the transformer substation interval, and the smaller the minimum telemetry change time is, the better the running state of the measurement and control device of the corresponding transformer substation interval is.
S3: according to the telemetry change times of each transformer substation interval and the telemetry change time of each time, the average telemetry change time of each transformer substation interval, the frequency proportion of the telemetry change time greater than the average telemetry change time and the telemetry change frequency proportion are counted.
Optionally, step S3 includes: the following steps are performed for each substation interval:
dividing the accumulated total telemetry change time by the telemetry change times to obtain average telemetry change time;
dividing the number of times that the telemetry change time is greater than the average telemetry change time by the number of times of telemetry change to obtain a number of times duty cycle that the telemetry change time is greater than the average telemetry change time;
dividing the number of telemetry changes by the total telemetry data amount to obtain a telemetry change ratio.
The telemetry change times are the total telemetry change times of each substation interval recorded after traversing multi-frame telemetry data of each substation interval.
S4: if the average telemetry change time of any transformer substation interval is larger than the first time threshold, the number of times that the telemetry change time is larger than the average telemetry change time is larger than the first specified proportion, and the number of times that the telemetry change time is smaller than the second specified proportion, judging that the telemetry change time of the measurement and control device of the transformer substation interval is longer, and sending alarm information to the measurement and control device of the transformer substation interval.
The first specified proportion and the second specified proportion can be set by a developer according to practical conditions, and optionally, the first specified proportion is 60% and the second specified proportion is 80%. The first time threshold is determined according to a change time index of the telemetry data, and in general, the master station sets a change time index of the telemetry data for each substation interval at the substation end, which is generally 3 seconds, that is, the telemetry change time is qualified within 3 seconds.
Therefore, when the average telemetry change time of any one transformer substation interval is greater than 3 seconds, the measurement and control device of the transformer substation interval may have problems, and if the number of times that the telemetry change time is greater than the average telemetry change time is greater than 60% and the number of times that the telemetry change time is less than 80% at the same time, the measurement and control device of the transformer substation interval has longer telemetry change time.
Optionally, after step S2, the maximum telemetry change time of each substation interval may also be counted according to the telemetry change time; if the maximum telemetry change time of any transformer substation interval is larger than the second time threshold, judging that the telemetering data of the transformer substation interval is missed by a telemetering device of the transformer substation, and sending alarm information for indicating that the telemetering data is missed by the telemetering device. Wherein the second time threshold is determined based on the time interval during which telemetry data is uploaded by the telematic device, typically 3 minutes. The main station is provided with a mechanism for automatically calling the telemetering device at the transformer substation end every 3 minutes, namely every 3 minutes, all telemetering data acquired by the measurement and control devices at each transformer substation interval are sent up through the telemetering device, and the main station should receive the telemetering data uploaded by the telemetering device every 3 minutes once, so that when no telemetering data change occurs within 3 minutes, namely the maximum telemetering change time exceeds 3 minutes, the telemetering data are considered to be missed by the telemetering device.
Optionally, after step S2, the method further includes: if the telemetry change time of any one of the transformer substation intervals is larger than a third time threshold and smaller than a second time threshold, determining that the telemetering data of the transformer substation interval are transmitted in a delayed mode by the telemetering device, and sending alarm information for indicating the telemetering data to be transmitted in the delayed mode by the telemetering device. Wherein, the third time threshold is determined according to the time-consuming duration of the full data uploaded by the telematic device, and is generally 30 seconds.
When the master station automatically carries out a total call on the telecontrol device at the substation end every 3 minutes, the telecontrol device uploads all data of the substation, including remote control, remote measurement, remote signaling and the like, and takes about 30 seconds. Because of the limited telemetry data capacity that is sent over the same period of time by the telematic device, some mechanism is often provided to ensure that more important telemetry data is sent over preferentially (typically all data is sent over preferentially), potentially affecting the order in which portions of the telemetry data are sent over in varying order. Thus, if there is a telemetry change time at a value of 30 seconds to 3 minutes, this is due to the delayed upward movement of the telematic device.
By implementing the optional implementation mode, whether the telemetering device of the transformer substation leaks or delays sending telemetry data can be analyzed, and an alarm is given to operation management personnel of the transformer substation to check the telemetering device in a station-entering mode, so that the operation state of the telemetering device of the transformer substation can be monitored in real time.
The embodiment provides a telemetry data analysis method for a transformer substation, which is characterized in that telemetry data are taken out from a message document of the transformer substation received from the previous day, data analysis is carried out according to transformer substation intervals, the telemetry change times of each transformer substation interval and the telemetry change time of each time are counted, average telemetry change time of each transformer substation interval, the frequency proportion of the telemetry change time being larger than the average telemetry change time and the telemetry change frequency proportion are counted further, transformer substation intervals with longer telemetry change time of a measurement and control device are concerned, alarming is carried out, data analysis can be carried out according to transformer substation intervals, the measurement and control device of each transformer substation interval is monitored, the accuracy of alarming is improved, and the method is more refined.
In addition, whether the telemetering device of the transformer substation leaks or delays sending telemetry data can be analyzed, and an alarm is given to operation management personnel of the transformer substation to check the telemetering device in a station-entering mode, so that the operation state of the telemetering device of the transformer substation can be monitored in real time. Based on the method, through checking the telecontrol device which may be problematic and the measurement and control device of a certain transformer substation interval, the problem that reference data of AVC cannot be refreshed in time and blind adjustment occurs due to the fact that a power system dispatcher cannot know real-time telemetry conditions of all transformer substation intervals in time from SCADA can be solved, and the power system dispatcher can be ensured to master real-time telemetry conditions of all transformer substation intervals in real time. The method is beneficial to reducing the repeated investment, repeated construction and incomplete operation and maintenance of power grid enterprises and reduces potential safety hazards.
Example 2
As shown in fig. 2, the present embodiment provides a telemetry data analysis device of a substation, which includes an acquisition unit 201, a reading unit 202, a statistics unit 203, and a first alarm unit 204; wherein, the liquid crystal display device comprises a liquid crystal display device,
an obtaining unit 201, configured to obtain a message document of a transformer substation received in a previous day, and obtain telemetry data corresponding to a type identifier according to the type identifier of each frame of message of the message document;
the reading unit 202 is configured to, when reading each frame of message, find a message with a change in the telemetry data of the next frame corresponding to the telemetry object point number according to the telemetry object point number in the frame of message, calculate a time interval of two frames of messages as a telemetry change time of a substation interval corresponding to the telemetry object point number, count the telemetry change time into an accumulated total telemetry change time of the substation interval, add one to a telemetry change number of the substation interval, continue reading the next frame of message, and repeatedly perform the operation until all messages of the substation are traversed, so as to obtain a telemetry change number of each substation interval and a telemetry change time of each time;
a statistics unit 203, configured to calculate an average telemetry change time of each transformer substation interval, a frequency ratio of telemetry change time greater than the average telemetry change time, and a telemetry change frequency ratio according to the telemetry change times of each transformer substation interval and the telemetry change time of each time;
the first alarm unit 204 is configured to determine that the telemetry change time of the measurement and control device of the transformer substation interval is longer when the average telemetry change time of any transformer substation interval is greater than a first time threshold, the number of times that the telemetry change time is greater than the average telemetry change time is greater than a first specified proportion, and the number of times that the telemetry change time is less than a second specified proportion, and send alarm information to the measurement and control device of the transformer substation interval, where the first time threshold is determined according to a change time index of telemetry data.
Optionally, the statistics unit 203 is specifically configured to perform the following operations for each substation interval:
dividing the accumulated total telemetry change time by the telemetry change times to obtain average telemetry change time;
dividing the number of times that the telemetry change time is greater than the average telemetry change time by the number of times of telemetry change to obtain a number of times duty cycle that the telemetry change time is greater than the average telemetry change time;
dividing the number of telemetry changes by the total telemetry data amount to obtain a telemetry change ratio.
Optionally, the system further comprises a second alarm unit, not shown, configured to count a maximum telemetry change time of each substation interval according to the telemetry change time after the reading unit 202 obtains the telemetry change times of each substation interval and the telemetry change time of each time; and when the maximum telemetry change time of any transformer substation interval is larger than a second time threshold, judging that the telemetering data of the transformer substation interval is missed by the telemetering device of the transformer substation, and sending out alarm information for indicating that the telemetering data is missed by the telemetering device, wherein the second time threshold is determined according to the time interval of the telemetering data uploaded by the telemetering device.
Optionally, the second alarm unit is further configured to determine that the telemetering device delays to send the telemetering data of the transformer substation interval to send alarm information for indicating that the telemetering device delays to send the telemetering data to the transformer substation after the reading unit 202 obtains the telemetering change times of each transformer substation interval and the telemetering change time of each time, and if the telemetering change time of any one transformer substation interval is greater than a third time threshold and less than a second time threshold, the third time threshold is determined according to the time duration of sending all data to the telemetering device.
Optionally, the device further includes a recording unit, not shown, configured to compare the telemetry change time of the substation interval with the recorded maximum telemetry change time of the substation interval after the reading unit 202 calculates the time interval of two frames of messages as the telemetry change time of the substation interval corresponding to the telemetry target point number, and replace the telemetry change time with a new maximum telemetry change time and store the new maximum telemetry change time in the database if the telemetry change time is greater than the recorded maximum telemetry change time; and comparing the telemetry change time of the transformer substation interval with the recorded minimum telemetry change time of the transformer substation interval, and if the telemetry change time is smaller than the recorded minimum telemetry change time, replacing the telemetry change time with the new minimum telemetry change time and storing the new minimum telemetry change time into a database.
The embodiment provides a telemetry data analysis device of a transformer substation, telemetry data are taken out from a message document of the transformer substation received from the previous day, the telemetry data are divided and analyzed according to transformer substation intervals, the telemetry change times of each transformer substation interval and the telemetry change time of each time are counted, the average telemetry change time of each transformer substation interval, the frequency proportion of the telemetry change time which is larger than the average telemetry change time and the telemetry change frequency proportion are counted further, the transformer substation interval with longer telemetry change time of a measurement and control device is concerned and an alarm is given, so that the data analysis can be carried out by taking the transformer substation interval as a unit, the measurement and control device of each transformer substation interval is monitored, the device is more refined, and the alarm accuracy is improved.
In addition, whether the telemetering device of the transformer substation leaks or delays sending telemetry data can be analyzed, and an alarm is given to operation management personnel of the transformer substation to check the telemetering device in a station-entering mode, so that the operation state of the telemetering device of the transformer substation can be monitored in real time. Based on the method, through checking the telecontrol device which may be problematic and the measurement and control device of a certain transformer substation interval, the problem that reference data of AVC cannot be refreshed in time and blind adjustment occurs due to the fact that a power system dispatcher cannot know real-time telemetry conditions of all transformer substation intervals in time from SCADA can be solved, and the power system dispatcher can be ensured to master real-time telemetry conditions of all transformer substation intervals in real time. The method is beneficial to reducing the repeated investment, repeated construction and incomplete operation and maintenance of power grid enterprises and reduces potential safety hazards.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (9)
1. A method of telemetry data analysis for a substation, comprising the steps of:
s1: acquiring a message document of a transformer substation received in the previous day, and acquiring telemetry data corresponding to the type identifier according to the type identifier of each frame of message of the message document;
s2: when each frame of message is read, according to the telemetry object point number in the frame of message, finding out the message of the next frame of telemetry data change corresponding to the telemetry object point number, calculating the time interval of two frames of messages as the telemetry change time of the transformer substation interval corresponding to the telemetry object point number, counting the telemetry change time into the accumulated total telemetry change time of the transformer substation interval, adding one to the accumulated telemetry change times of the transformer substation interval, continuing to read the next frame of message, and repeatedly executing the steps until all messages of the transformer substation are traversed, thereby obtaining the telemetry change times of each transformer substation interval and the telemetry change time of each time;
according to the telemetry change time, calculating the maximum telemetry change time of each transformer substation interval;
if the maximum telemetry change time of any transformer substation interval is larger than a second time threshold, judging that a telemetering device of a transformer substation leaks telemetry data of the transformer substation interval, and sending alarm information for indicating that the telemetering device leaks telemetry data; wherein the second time threshold is determined based on a time interval during which telemetry data is uploaded by the telematic device;
s3: according to the telemetry change times of each transformer substation interval and the telemetry change time of each time, the average telemetry change time of each transformer substation interval, the frequency proportion of the telemetry change time being larger than the average telemetry change time and the telemetry change frequency proportion are counted;
s4: if the average telemetry change time of any transformer substation interval is larger than a first time threshold, the number of times of the telemetry change time larger than the average telemetry change time is larger than a first designated proportion, and the number of times of the telemetry change is smaller than a second designated proportion, the longer telemetry change time of a measurement and control device of the transformer substation interval is judged, and alarm information is sent out for the measurement and control device of the transformer substation interval, wherein the first time threshold is determined according to a change time index of telemetry data.
2. The method of telemetry data analysis of a substation according to claim 1, wherein step S3 comprises: the following steps are executed for each substation interval:
dividing the accumulated total telemetry change time by the telemetry change times to obtain average telemetry change time;
dividing the number of times that the telemetry change time is greater than the average telemetry change time by the number of times of telemetry change to obtain a number of times duty cycle that the telemetry change time is greater than the average telemetry change time;
dividing the number of telemetry changes by the total telemetry data amount to obtain a telemetry change ratio.
3. The method of analyzing telemetry data of a substation according to claim 1, further comprising the steps of, after step S2:
if the telemetry change time of any one of the transformer substation intervals is larger than a third time threshold and smaller than the second time threshold, judging that the telemetering device delays and uploads telemetry data of the transformer substation interval, and sending alarm information for indicating the telemetering device to delay and uploads the telemetry data; the third time threshold is determined according to the time-consuming duration of the full data uploaded by the telemechanical device.
4. The method for analyzing telemetry data of a substation according to claim 1, wherein in step S2, after calculating a time interval of two frames of messages as a telemetry change time of a substation interval corresponding to the telemetry target point number, the method further comprises:
comparing the telemetry change time of the transformer substation interval with the recorded maximum telemetry change time of the transformer substation interval, and if the telemetry change time is larger than the recorded maximum telemetry change time, replacing the telemetry change time with the new maximum telemetry change time and storing the new maximum telemetry change time into a database;
and comparing the telemetry change time of the transformer substation interval with the recorded minimum telemetry change time of the transformer substation interval, and if the telemetry change time is smaller than the recorded minimum telemetry change time, replacing the telemetry change time with the new minimum telemetry change time and storing the new minimum telemetry change time into a database.
5. A telemetry data analysis device of a substation, comprising:
the acquisition unit is used for acquiring the message document of the transformer substation received in the previous day and acquiring telemetry data corresponding to the type identifier according to the type identifier of each frame of message of the message document;
the reading unit is used for finding out a message with changed telemetry data of the next frame corresponding to the telemetry object point number according to the telemetry object point number in each frame of message when reading each frame of message, calculating the time interval of the two frames of messages as telemetry change time of a transformer substation interval corresponding to the telemetry object point number, counting the telemetry change time into the accumulated total telemetry change time of the transformer substation interval, accumulating the telemetry change times of the transformer substation interval, adding one, continuing to read the next frame of message, and repeatedly executing the operation until all messages of the transformer substation are traversed, so as to obtain the telemetry change times of each transformer substation interval and the telemetry change time of each time;
the reading unit also counts the maximum telemetry change time of each transformer substation interval according to the telemetry change time; if the maximum telemetry change time of any transformer substation interval is larger than a second time threshold, judging that a telemetering device of a transformer substation leaks telemetry data of the transformer substation interval, and sending alarm information for indicating that the telemetering device leaks telemetry data; wherein the second time threshold is determined based on a time interval during which telemetry data is uploaded by the telematic device;
the statistics unit is used for counting the average telemetry change time of each transformer substation interval, the frequency proportion of the telemetry change time which is larger than the average telemetry change time and the telemetry change frequency proportion according to the telemetry change times of each transformer substation interval and the telemetry change time of each time;
the first alarm unit is used for judging that the telemetry change time of the measurement and control device of any transformer substation interval is longer when the average telemetry change time of the transformer substation interval is larger than a first time threshold value, the frequency ratio of the telemetry change time to the average telemetry change time is larger than a first designated proportion and the frequency ratio of the telemetry change time to the telemetry change time is smaller than a second designated proportion, and sending alarm information to the measurement and control device of the transformer substation interval, wherein the first time threshold value is determined according to the change time index of telemetry data.
6. The substation telemetry data analysis device according to claim 5, wherein the statistics unit is specifically configured to perform the following operations for each of the substation intervals:
dividing the accumulated total telemetry change time by the telemetry change times to obtain average telemetry change time;
dividing the number of times that the telemetry change time is greater than the average telemetry change time by the number of times of telemetry change to obtain a number of times duty cycle that the telemetry change time is greater than the average telemetry change time;
dividing the number of telemetry changes by the total telemetry data amount to obtain a telemetry change ratio.
7. The telemetry data analysis device of the transformer substation according to claim 5, further comprising a second alarm unit, configured to count a maximum telemetry change time of each transformer substation interval according to the telemetry change time after the reading unit obtains a telemetry change number of each transformer substation interval and each telemetry change time; and when the maximum telemetry change time of any transformer substation interval is larger than a second time threshold, judging that the telemetering data of the transformer substation interval is missed by a telemetering device of the transformer substation, and sending out alarm information for indicating that the telemetering data is missed by the telemetering device, wherein the second time threshold is determined according to the time interval of the telemetering data uploaded by the telemetering device.
8. The telemetry data analysis device of the transformer substation according to claim 7, wherein the second alarm unit is further configured to, after the reading unit obtains the number of telemetry changes of each transformer substation interval and the telemetry change time of each time, determine that the telemetering device delays to send telemetry data of the transformer substation interval, and send alarm information for instructing the telemetering device to send telemetry data in a delayed manner if the telemetry change time of any one of the transformer substation intervals is greater than a third time threshold and less than the second time threshold; the third time threshold is determined according to the time-consuming duration of the full data uploaded by the telemechanical device.
9. The device according to claim 5, further comprising a recording unit configured to compare the telemetry change time of the substation interval with the recorded maximum telemetry change time of the substation interval after the reading unit calculates the time interval of two frames of messages as the telemetry change time of the substation interval corresponding to the telemetry target point number, and replace the time interval with a new maximum telemetry change time and store the new maximum telemetry change time in the database if the time interval is greater than the recorded maximum telemetry change time; and comparing the telemetry change time of the transformer substation interval with the recorded minimum telemetry change time of the transformer substation interval, and if the telemetry change time is smaller than the recorded minimum telemetry change time, replacing the telemetry change time with the new minimum telemetry change time and storing the new minimum telemetry change time into a database.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011610460.8A CN112636476B (en) | 2020-12-30 | 2020-12-30 | Remote measurement data analysis method and device for transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011610460.8A CN112636476B (en) | 2020-12-30 | 2020-12-30 | Remote measurement data analysis method and device for transformer substation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112636476A CN112636476A (en) | 2021-04-09 |
| CN112636476B true CN112636476B (en) | 2023-04-28 |
Family
ID=75286807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011610460.8A Active CN112636476B (en) | 2020-12-30 | 2020-12-30 | Remote measurement data analysis method and device for transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112636476B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336972A (en) * | 2021-12-30 | 2022-04-12 | 广东电网有限责任公司 | Overhauling determination method and device for telecontrol device |
| CN116742791A (en) * | 2023-04-11 | 2023-09-12 | 国网宁夏电力有限公司吴忠供电公司 | Centralized control method for shortening power grid telemetering exception handling time |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107153915A (en) * | 2017-04-18 | 2017-09-12 | 国网河北省电力公司衡水供电分公司 | A kind of transformer station does not change the method and system of telemetry automatic detection |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015136624A1 (en) * | 2014-03-11 | 2015-09-17 | 株式会社日立製作所 | Application performance monitoring method and device |
| CN106878103A (en) * | 2016-12-27 | 2017-06-20 | 国网浙江省电力公司电力科学研究院 | A kind of MMS messages telemetry extracting method |
| CN109104324A (en) * | 2017-06-21 | 2018-12-28 | 许昌许继软件技术有限公司 | A kind of method and device thereof for judging telemetry and whether refreshing |
| CN107276236A (en) * | 2017-08-08 | 2017-10-20 | 国网江苏省电力公司宿迁供电公司 | A kind of power network remote measurement warning strategies method based on floating threshold criterion |
| CN112073464B (en) * | 2020-08-06 | 2023-05-30 | 广东电网有限责任公司 | Method and system for judging whether substation RTU telemetry data is refreshed or not |
-
2020
- 2020-12-30 CN CN202011610460.8A patent/CN112636476B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107153915A (en) * | 2017-04-18 | 2017-09-12 | 国网河北省电力公司衡水供电分公司 | A kind of transformer station does not change the method and system of telemetry automatic detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112636476A (en) | 2021-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10164431B2 (en) | Outage management and prediction for a power grid system | |
| CN112636476B (en) | Remote measurement data analysis method and device for transformer substation | |
| US6532425B1 (en) | Remote battery plant monitoring system | |
| US11979022B2 (en) | Power quality monitoring in a distribution grid | |
| CN108710099B (en) | Monitoring and alarming method and system for capacitor voltage transformer | |
| CN105116291A (en) | Power grid operating steady state monitoring information-based fault diagnosis system and method | |
| CN104360208A (en) | Acquisition failure analyzing and processing method of electricity utilization information acquisition operating and maintaining system | |
| CN107302264B (en) | Control method for stable operation of secondary automation equipment of transformer substation | |
| CN112421774B (en) | Monitoring system of reactive power compensation equipment of power distribution network | |
| CN103874122A (en) | Special transformer terminal network signal collecting system and method | |
| CN108764596A (en) | The monitoring method and monitoring system of the power failure of metering automation system | |
| CN104753173A (en) | Method for automatically diagnosing telemeasuring data transmission failure of power grid energy manage system | |
| CN103018603A (en) | Diagnostic method of abnormal operating state of switch cabinet | |
| CN117078017A (en) | Intelligent decision analysis system for monitoring power grid equipment | |
| CN116823226A (en) | Electric power district fault monitoring system based on big data | |
| CN114283590A (en) | Traffic flow peak prediction method and device and electronic equipment | |
| CN113128840A (en) | Equipment state evaluation method, system and storage medium | |
| KR102493594B1 (en) | Server, method and computer program for synchronizing time between measuring device and electricity meter | |
| CN109035746B (en) | Function judgment method and system for centralized meter reading terminal | |
| CN108988484B (en) | Feeder line and important customer power failure monitoring method based on metering automation system | |
| CN112073464B (en) | Method and system for judging whether substation RTU telemetry data is refreshed or not | |
| CN114152892B (en) | Method for monitoring battery health of fault indicator | |
| CN113055454A (en) | Centralized processing method and system for monitoring data of main transformer equipment | |
| CN112415343A (en) | Intelligent assembly of multi-state-quantity configurable totally-enclosed gas combined electrical appliance | |
| CN110751814A (en) | Electrical fire monitoring system for rail transit and early warning analysis method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |