CN112636476A - Telemetry data analysis method and device for transformer substation - Google Patents
Telemetry data analysis method and device for transformer substation Download PDFInfo
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- CN112636476A CN112636476A CN202011610460.8A CN202011610460A CN112636476A CN 112636476 A CN112636476 A CN 112636476A CN 202011610460 A CN202011610460 A CN 202011610460A CN 112636476 A CN112636476 A CN 112636476A
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- 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
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- 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
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- 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
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- 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
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- 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
Abstract
The invention discloses a method and a device for analyzing telemetering data of a transformer substation, which are characterized in that telemetering data are taken out from a message document of the transformer substation received from the previous day, are divided and analyzed according to transformer substation intervals, the telemetering change times of each transformer substation interval and each telemetering change time are counted, the average telemetering change time of each transformer substation interval, the number of times that the telemetering change time is greater than the average telemetering change time and the telemetering change time are further counted, and the transformer substation interval with longer telemetering change time of a measuring and controlling device is concerned and alarms, so that the data analysis can be carried out by taking the transformer substation interval as a unit, the measuring and controlling device of each transformer substation interval is monitored, 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 method and a device for analyzing telemetering data 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, a main transformer, a low voltage outgoing line and the like, wherein each part is called a transformer substation interval. The substation bay is a part of a substation, and comprises ultrahigh (or high) voltage switchgear, connections between power lines, power transformers and the like and a substation bus system, and protection, control, measurement and control devices for the power lines, the power transformers and the like.
Telemetering Data such as current, voltage, power And the like of each transformer substation interval are real-time Data detected by a measuring And controlling device of the transformer substation interval through a sensor, And are acquired from the measuring And controlling device of each transformer substation interval through a telecontrol device of the transformer substation And then are sent to a power dispatching automation System (SCADA). Therefore, a power system dispatcher can monitor the whole network in real time through the telemetering data, and meanwhile, a voltage reactive power control system (Advanced Video Coding, AVC) can also adjust a transformer substation of the whole network by referring to the telemetering data, so that the power grid can be ensured to operate at a safe and stable level.
Due to the fact that the capacity of telemetering data sent by the telecontrol device at the same time interval is limited, a certain mechanism is often set to ensure that important telemetering data are sent preferentially, however, some measuring and controlling devices at intervals of the transformer substations have the conditions of slow acquisition and many faults, so that the telemetering data cannot be sent in time, a power system dispatcher cannot timely know the real-time operation conditions of the intervals of the transformer substations from the SCADA, telemetering of 10kV bus voltage and the like can be involved, the reference data of AVC cannot be refreshed in time, and blind regulation to a certain degree easily exists.
Corresponding measures can be taken only when a power system dispatcher finds that telemetering data of a certain transformer substation interval is unchanged from an alarm window or a primary wiring diagram, for example, a transformer substation operator is called manually or is informed to check a telecontrol device and a measuring and controlling device of a certain transformer substation interval, the mode of manual checking or alarming is relatively lagged and low in efficiency, and a large amount of manpower and overhaul and maintenance cost are consumed.
In the prior art, chinese patent application with publication number CN107153915A, publication number 2017.09.12, provides an automatic detection method and system for unchanged telemetering data of a substation, and by detecting and comparing telemetering data generated before and after the same substation, the substation with unqualified telemetering data can be found in time to alarm. However, in the technical scheme, data analysis is performed by taking the transformer substation as a unit, and the alarm accuracy is low due to insufficient refinement.
Disclosure of Invention
The invention provides a method and a device for analyzing telemetering data of a transformer substation, aiming at overcoming the defect of low alarm accuracy in the prior art, which can analyze data by taking a transformer substation interval as a unit, monitor the measuring and controlling devices of each transformer substation interval, are more refined and further improve the alarm accuracy.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the first aspect of 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 telemetering data corresponding to a type identifier according to the type identifier of each frame of message of the message document;
s2: when reading each frame of message, finding a message with the change of the next frame of telemetering data corresponding to the telemetering object point number according to the telemetering object point number in the frame of message, calculating the time interval of two frames of messages as the telemetering change time of the transformer substation interval corresponding to the telemetering object point number, counting the telemetering change time into the accumulated total telemetering change time of the transformer substation interval, adding one to the telemetering change times of the transformer substation interval, continuously reading the next frame of message, repeatedly executing the step until traversing all messages of the transformer substation, and obtaining the telemetering change times of each transformer substation interval and each telemetering change time;
s3: according to the telemetering change times of each transformer substation interval and each telemetering change time, counting the average telemetering change time of each transformer substation interval, the number of times that the telemetering change time is greater than the average telemetering change time and the telemetering change time;
s4: if the average telemetering change time of any transformer substation interval is larger than a first time threshold, the number of times that the telemetering change time is larger than the average telemetering change time is larger than a first specified proportion, and the number of times that the telemetering change time is larger than the average telemetering change time is smaller than a second specified proportion, the telemetering change time of the measuring and controlling device of the transformer substation interval is judged to be longer, alarm information is sent to the measuring and controlling device of the transformer substation interval, and the first time threshold is determined according to the change time index of telemetering data.
According to the technical scheme, the telemetering data are taken out from the message documents of the transformer substations received in the previous day, the telemetering data are divided and subjected to data analysis according to the transformer substation intervals, the telemetering change times of each transformer substation interval and the telemetering change time of each transformer substation interval are counted, the average telemetering change time of each transformer substation interval, the number of times that the telemetering change time is larger than the average telemetering change time and the telemetering change time are counted, the transformer substation interval with the longer telemetering change time of the measuring and control device is concerned, and alarming is performed, so that data analysis can be performed by taking the transformer substation interval as a unit, the measuring and control device of each transformer substation interval is monitored, the monitoring and control device is more refined, and.
Further, step S3 includes: performing the following steps for each of the substation bays:
dividing the total accumulated telemetering change time by the telemetering change times to obtain an average telemetering 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 that the telemetry change time is greater than the average telemetry change time to obtain the ratio of the number of times that the telemetry change time is greater than the average telemetry change time;
and dividing the telemetry change times by the total telemetry data amount to obtain the telemetry change times ratio.
Further, after step S2, the method further includes the following steps:
counting the maximum telemetering change time of each transformer substation interval according to the telemetering change time;
if the maximum telemetering 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 telecontrol device of the transformer substation, and sending alarm information for indicating the telecontrol device to miss the telemetering data; wherein the second time threshold is determined based on a time interval for which telemetry data is uploaded by the telemechanical device.
Further, after step S2, the method further includes the following steps:
if the telemetering change time of any one time of any transformer substation interval is greater than a third time threshold and smaller than the second time threshold, the telecontrol device is judged to send the telemetering data of the transformer substation interval in a delayed mode, and alarm information used for indicating the telecontrol device to send the telemetering data in the delayed mode is sent out; and the third time threshold is determined according to the time-consuming duration of sending the full data on the telecontrol 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 telemetering change time of the transformer substation interval with the recorded maximum telemetering change time of the transformer substation interval, and if the telemetering change time of the transformer substation interval is greater than the recorded maximum telemetering change time, replacing the telemetering change time of the transformer substation interval with a new maximum telemetering change time and storing the new maximum telemetering change time in a database;
and comparing the telemetering change time of the substation interval with the recorded minimum telemetering change time of the substation interval, and replacing the minimum telemetering change time with a new minimum telemetering change time and storing the new minimum telemetering change time into a database if the minimum telemetering change time is smaller than the recorded minimum telemetering change time.
The second aspect of the embodiment of the present invention discloses a telemetering data analysis apparatus of a substation, including:
the acquisition unit is used for acquiring message documents of the transformer substation received in the previous day and acquiring telemetering data corresponding to the type identification according to the type identification of each frame of message of the message documents;
the reading unit is used for finding a message with changed next frame of telemetering data corresponding to the telemetering object point number according to the telemetering object point number in each frame of message when reading each frame of message, calculating the time interval of two frames of messages as the telemetering change time of a transformer substation interval corresponding to the telemetering object point number, counting the telemetering change time into the accumulated total telemetering change time of the transformer substation interval, accumulating and adding one to the telemetering change times of the transformer substation interval, continuously reading the next frame of message, repeatedly executing the operation until all messages of the transformer substation are traversed, and obtaining the telemetering change times of each transformer substation interval and each telemetering change time;
the statistical unit is used for calculating the average telemetering change time of each transformer substation interval, the frequency ratio of the telemetering change time to be greater than the average telemetering change time and the telemetering change frequency ratio according to the telemetering change frequency of each transformer substation interval and each telemetering change time;
the first alarm unit is used for judging that the telemetering change time of the measuring and controlling device of any transformer substation interval is longer when the average telemetering change time of any transformer substation interval is larger than a first time threshold, the number of times that the telemetering change time is larger than the average telemetering change time is larger than a first specified proportion, and the number of times that the telemetering change time is smaller than a second specified proportion, and sending alarm information aiming at the measuring and controlling device of the transformer substation interval, wherein the first time threshold is determined according to the change time index of telemetering data.
Further, the statistical unit is specifically configured to, for each of the substation intervals, perform the following operations:
dividing the total accumulated telemetering change time by the telemetering change times to obtain an average telemetering 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 that the telemetry change time is greater than the average telemetry change time to obtain the ratio of the number of times that the telemetry change time is greater than the average telemetry change time;
and dividing the telemetry change times by the total telemetry data amount to obtain the telemetry change times ratio.
The system further comprises a second alarm unit, a second monitoring unit and a second monitoring unit, wherein the second alarm unit is used for counting the maximum telemetering change time of each transformer substation interval according to the telemetering change time after the reading unit obtains the telemetering change times of each transformer substation interval and each telemetering change time; and when the maximum telemetering 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 telecontrol device of the transformer substation, and sending alarm information for indicating the telecontrol device to miss the telemetering data, wherein the second time threshold is determined according to the time interval of the telemetering data sent by the telecontrol device.
Further, the second alarm unit is further configured to, after the reading unit obtains the number of times of telemetry change of each substation interval and each time of telemetry change, determine that the telecontrol device sends the telemetry data of the substation interval in a delayed manner if any time of telemetry change of any substation interval is greater than a third time threshold and smaller than the second time threshold, and send alarm information for instructing the telecontrol device to send the telemetry data in a delayed manner; and the third time threshold is determined according to the time-consuming duration of sending the full data on the telecontrol device.
The system further comprises a recording unit, a database and a processing unit, wherein the recording unit is used for comparing the telemetering change time of the transformer substation interval with the recorded maximum telemetering change time of the transformer substation interval after the time interval of two frames of messages calculated by the reading unit is used as the telemetering change time of the transformer substation interval corresponding to the telemetering object point number, and replacing the recorded maximum telemetering change time with a new maximum telemetering change time and storing the new maximum telemetering change time in the database if the recorded maximum telemetering change time is greater than the recorded maximum telemetering change time; and comparing the telemetering change time of the substation interval with the recorded minimum telemetering change time of the substation interval, and replacing the minimum telemetering change time with a new minimum telemetering change time and storing the new minimum telemetering change time into a database if the minimum telemetering change time is smaller than the recorded minimum telemetering change time.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that: the invention discloses a method and a device for analyzing telemetering data of a transformer substation, which are characterized in that telemetering data are taken out from a message document of the transformer substation received from the previous day, are divided and analyzed according to transformer substation intervals, the telemetering change times of each transformer substation interval and each telemetering change time are counted, the average telemetering change time of each transformer substation interval, the number of times that the telemetering change time is greater than the average telemetering change time and the telemetering change time are further counted, and the transformer substation interval with longer telemetering change time of a measuring and controlling device is concerned and alarms, so that the data analysis can be carried out by taking the transformer substation interval as a unit, the measuring and controlling device of each transformer substation interval is monitored, 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 disclosure.
Wherein: 201. an acquisition unit; 202. a reading unit; 203. a counting unit; 204. a first alarm unit.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
the technical solution of the present 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 for a substation, including the following steps:
s1: and acquiring a message document of the transformer substation received in the previous day, and acquiring telemetering 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 database with huge capacity can be stored in the history server of the SCADA, historical message documents can be stored in the database for a long time, the message documents comprise multi-frame messages, each frame of message records the full data (namely, the running state data) of the transformer substation, the data comprises remote control, remote measurement, remote signaling and the like, and the remote measurement data comprises each numerical value refreshing time and the corresponding numerical value of the remote measurement information. Therefore, in step S1, the message document of the substation received in the previous day may be specifically retrieved from the database for offline analysis.
S2: when reading each frame of message, finding a message with the change of the next frame of telemetering data corresponding to the telemetering object point number according to the telemetering object point number in the frame of message, calculating the time interval of two frames of messages as the telemetering change time of the transformer substation interval corresponding to the telemetering object point number, counting the telemetering change time into the accumulated total telemetering change time of the transformer substation interval, adding one to the telemetering change times of the transformer substation interval, continuously reading the next frame of message, and repeatedly executing the step until all messages of the transformer substation are traversed to obtain the telemetering change times of each transformer substation interval and each telemetering change time.
It should be noted that each frame of message corresponds to a telemetry object point number, and the telemetry object point number is used to indicate to which substation interval the telemetry data on the corresponding message belongs. Therefore, the multi-frame telemetering data of the transformer substation can be divided according to the transformer substation interval according to the telemetering object point number of each frame message.
Specifically, multi-frame messages of the transformer substation are directly read in a traversing manner, firstly, reading is carried out from a first frame message, a message of which the next frame of telemetering data corresponding to the telemetering object point number changes is found according to the telemetering object point number of the frame message, the transformer substation interval corresponding to the telemetering 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 telemetering change time of the transformer substation interval, the telemetering change time is counted into the accumulated total telemetering change time of the transformer substation interval, the telemetering change times of the transformer substation interval are accumulated and added, the second frame message is continuously read, and by analogy, after all messages of the transformer substations are traversed, the telemetering change times of each transformer substation interval and the telemetering change time of each time can be obtained.
Therefore, the telemetering data can be divided according to the transformer substation intervals while the telemetering change time and the accumulated telemetering change times are calculated, and finally the telemetering change times of each transformer substation interval and each telemetering change time are obtained.
Optionally, in step S2, after the time interval of the two frames of messages is calculated as the telemetry change time of the substation interval corresponding to the telemetry object point number, the telemetry change time of the substation interval may be compared with the recorded maximum telemetry change time of the substation interval, and if the telemetry change time is greater than the recorded maximum telemetry change time, the telemetry change time is replaced with a new maximum telemetry change time and stored in the database; and comparing the telemetering change time of the substation interval with the recorded minimum telemetering change time of the substation interval, and replacing the minimum telemetering change time with a new minimum telemetering change time and storing the new minimum telemetering change time into a database if the minimum telemetering change time is smaller than the recorded minimum telemetering change time.
The maximum telemetering change time and the minimum telemetering change time of each transformer substation interval in the database can be continuously updated and recorded, wherein the minimum telemetering change time can be used for indicating the operation state of the measuring and control device of the transformer substation interval, and the smaller the minimum telemetering change time is, the better the operation state of the measuring and control device of the corresponding transformer substation interval is.
S3: according to the telemetering change times of each transformer substation interval and each telemetering change time, the average telemetering change time of each transformer substation interval, the number of times that the telemetering change time is larger than the average telemetering change time and the telemetering change time are counted.
Optionally, step S3 includes: the following steps are performed for each substation bay:
dividing the total accumulated telemetering change time by the telemetering change times to obtain an average telemetering 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 that the telemetry change time is greater than the average telemetry change time to obtain the ratio of the number of times that the telemetry change time is greater than the average telemetry change time;
and dividing the telemetry change times by the total telemetry data amount to obtain the telemetry change times ratio.
The telemetering change times are total telemetering change times of all the transformer substation intervals recorded in an accumulated mode after multi-frame telemetering data of all the transformer substation intervals are traversed.
S4: if the average telemetering change time of any transformer substation interval is larger than a first time threshold value, the number of times that the telemetering change time is larger than the average telemetering change time is larger than a first specified proportion, and the number of times that the telemetering change time is larger than the average telemetering change time is smaller than a second specified proportion, the telemetering change time of the measuring and control device of the transformer substation interval is judged to be longer, and alarm information is sent to the measuring and control device of the transformer substation interval.
The first specified proportion and the second specified proportion can be set by developers according to actual conditions, and optionally, the first specified proportion is 60% and the second specified proportion is 80%. The first time threshold is determined according to the change time index of the telemetric data, and in general, the master station sets the change time index of the telemetric data for each substation interval at the substation end, which is generally 3 seconds, that is, the telemetric change time is qualified within 3 seconds.
Therefore, when the average telemetering change time of any substation interval is more than 3 seconds, the problem possibly exists in the measuring and controlling device of the substation interval, and if the number of times that the telemetering change time is more than the average telemetering change time is more than 60% and the number of times that the telemetering change time is less than 80%, the telemetering change time of the measuring and controlling device of the substation interval is longer.
Optionally, after step S2, the maximum telemetry change time of each substation interval may be counted according to the telemetry change time; and if the maximum telemetering change time of any transformer substation interval is greater than a second time threshold, judging that the telemetering data of the transformer substation interval is missed by the telecontrol device of the transformer substation, and sending alarm information for indicating that the telemetering data is missed by the telecontrol device. Wherein the second time threshold is determined based on the interval of time for which telemetry data is uploaded by the telemechanical device, typically 3 minutes. Because a mechanism that the master station automatically calls the telecontrol devices at the transformer substation end every 3 minutes is arranged, namely every 3 minutes, all telemetering data acquired by the measuring and controlling devices at intervals of each transformer substation are transmitted once through the telecontrol devices, and the master station receives the telemetering data transmitted by the telecontrol devices every 3 minutes, when the telemetering data does not change within 3 minutes, namely the maximum telemetering change time exceeds 3 minutes, the telemetering data is considered to be caused by the telemetering devices failing to transmit the telemetering data.
Optionally, after step S2, the method further includes: and if the telemetering change time of any one time of any transformer substation interval is greater than a third time threshold and less than a second time threshold, determining that the telecontrol device sends the telemetering data of the transformer substation interval in a delayed mode, and sending alarm information for indicating the telecontrol device to send the telemetering data in the delayed mode. The third time threshold is determined according to the time duration of sending the full data on the telecontrol device, and is generally 30 seconds.
When the master station automatically calls the telecontrol device at the transformer substation end every 3 minutes, the telecontrol device uploads the full data of the transformer substation, including remote control, remote measurement, remote signaling and the like, and the consumed time is about 30 seconds. Because the telemetering data transmitted by the telecontrol device in the same time period has limited capacity, some mechanism is often set to ensure that the more important telemetering data is transmitted preferentially (generally, the whole data is transmitted preferentially), and the transmission sequence of the telemetering data with partial change can be influenced. Therefore, if the telemetering change time is a value of 30 seconds to 3 minutes, the telemechanical device is indicated to be delayed to be sent upwards.
By implementing the optional implementation mode, whether the telecontrol device of the transformer substation is missed or delayed in sending the telemetering data can be analyzed, and the operation management personnel of the transformer substation are informed to go to the station to check the telecontrol device through alarming, so that the operation state of the telecontrol device of the transformer substation can be monitored in real time.
The embodiment provides a method for analyzing telemetering data of a transformer substation, telemetering data is taken out from a message document of the transformer substation received in the previous day, the telemetering data is divided and subjected to data analysis according to transformer substation intervals, the telemetering change times of each transformer substation interval and each telemetering change time are counted, the average telemetering change time of each transformer substation interval, the number of times that the telemetering change time is greater than the average telemetering change time and the telemetering change time are further counted, the transformer substation interval with the telemetering change time longer than the telemetering change time is concerned, and an alarm is given, so that data analysis can be performed by taking the transformer substation interval as a unit, the measuring and controlling devices of each transformer substation interval are monitored, the monitoring is more refined, and the alarm accuracy is improved.
In addition, whether the telecontrol device of the transformer substation is missed or delayed in sending telemetering data can be analyzed, and the operation management personnel of the transformer substation are informed to enter the station to check the telecontrol device through alarming, so that the operation state of the telecontrol device of the transformer substation can be monitored in real time. Based on the method, the problem that a power system dispatcher cannot timely know the real-time remote measuring condition of each transformer substation interval from the SCADA and the condition that AVC reference data cannot be timely refreshed to generate blind dispatching caused by the fact that the power system dispatcher cannot timely know the real-time remote measuring condition of each transformer substation interval can be solved by checking a telecontrol device which possibly has problems and a measuring and controlling device of a certain transformer substation interval, and the power system dispatcher can be ensured to master the real-time remote measuring condition of each transformer substation interval in real time. The method is beneficial to reducing the problems of repeated investment, repeated construction and improper 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 apparatus of a substation, which includes an obtaining unit 201, a reading unit 202, a statistics unit 203, and a first alarm unit 204; wherein the content of the first and second substances,
an obtaining unit 201, configured to obtain a message document of a 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;
a reading unit 202, configured to, when reading each frame of message, find a message in which a next frame of telemetry data corresponding to a telemetry object point number changes 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 a total accumulated telemetry change time of the substation interval, add one to an accumulated number of telemetry changes of the substation interval, continue to read a next frame of message, and repeatedly execute the operation until all messages of the substation are traversed, so as to obtain the number of telemetry changes of each substation interval and each telemetry change time;
the statistical unit 203 is used for calculating the average telemetering change time of each substation interval, the number of times that the telemetering change time is greater than the average telemetering change time and the telemetering change time ratio of each substation interval according to the telemetering change times of each substation interval and each telemetering change time;
the first alarm unit 204 is configured to determine that the telemetry change time of the measurement and control device in 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 for the measurement and control device in the transformer substation interval, where the first time threshold is determined according to a change time index of telemetry data.
Optionally, the statistical unit 203 is specifically configured to perform the following operations for each substation interval:
dividing the total accumulated telemetering change time by the telemetering change times to obtain an average telemetering 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 that the telemetry change time is greater than the average telemetry change time to obtain the ratio of the number of times that the telemetry change time is greater than the average telemetry change time;
and dividing the telemetry change times by the total telemetry data amount to obtain the telemetry change times ratio.
Optionally, the system further includes a second alarm unit, not shown in the figure, configured to count the maximum telemetry change time of each substation interval according to the telemetry change time after the reading unit 202 obtains the number of telemetry change times of each substation interval and each telemetry change time; and when the maximum telemetering 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 telecontrol device of the transformer substation, and sending alarm information for indicating the telecontrol device to miss the telemetering data, wherein the second time threshold is determined according to the time interval of the telemetering data sent by the telecontrol device.
Optionally, the second alarm unit is further configured to, after the reading unit 202 obtains the number of telemetry change times of each substation interval and each telemetry change time, determine that the telemechanical device sends the telemetry data of the substation interval in a delayed manner if any telemetry change time of any substation interval is greater than a third time threshold and smaller than a second time threshold, and send alarm information for instructing the telemechanical device to send the telemetry data in a delayed manner, where the third time threshold is determined according to a time-consuming duration of sending full data in the telemechanical device.
Optionally, the system further includes a recording unit, not shown in the figure, 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 the two frames of messages as the telemetry change time of the substation interval corresponding to the telemetry object point number, and if the telemetry change time is greater than the recorded maximum telemetry change time, replace the recorded maximum telemetry change time with a new maximum telemetry change time and store the new maximum telemetry change time in the database; and comparing the telemetering change time of the substation interval with the recorded minimum telemetering change time of the substation interval, and replacing the minimum telemetering change time with a new minimum telemetering change time and storing the new minimum telemetering change time into a database if the minimum telemetering change time is smaller than the recorded minimum telemetering change time.
The embodiment provides a telemetering data analysis device of a transformer substation, telemetering data is taken out from a message document of the transformer substation received in the previous day, the telemetering data is divided and subjected to data analysis according to transformer substation intervals, telemetering change times of each transformer substation interval and telemetering change time of each time are counted, average telemetering change time of each transformer substation interval is further counted, the number of times that the telemetering change time is larger than the average telemetering change time accounts for the number of times, and telemetering change times accounts for the number of times, attention is paid to the transformer substation interval with longer telemetering change time of the measuring and control device, and alarming is performed, so that data analysis can be performed by taking the transformer substation interval as a unit, the measuring and control device of each transformer substation interval is monitored, and.
In addition, whether the telecontrol device of the transformer substation is missed or delayed in sending telemetering data can be analyzed, and the operation management personnel of the transformer substation are informed to enter the station to check the telecontrol device through alarming, so that the operation state of the telecontrol device of the transformer substation can be monitored in real time. Based on the method, the problem that a power system dispatcher cannot timely know the real-time remote measuring condition of each transformer substation interval from the SCADA and the condition that AVC reference data cannot be timely refreshed to generate blind dispatching caused by the fact that the power system dispatcher cannot timely know the real-time remote measuring condition of each transformer substation interval can be solved by checking a telecontrol device which possibly has problems and a measuring and controlling device of a certain transformer substation interval, and the power system dispatcher can be ensured to master the real-time remote measuring condition of each transformer substation interval in real time. The method is beneficial to reducing the problems of repeated investment, repeated construction and improper operation and maintenance of power grid enterprises, and reduces potential safety hazards.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A telemetry data analysis method of a transformer substation is characterized by comprising the following steps:
s1: acquiring a message document of a transformer substation received in the previous day, and acquiring telemetering data corresponding to a type identifier according to the type identifier of each frame of message of the message document;
s2: when reading each frame of message, finding a message with the change of the next frame of telemetering data corresponding to the telemetering object point number according to the telemetering object point number in the frame of message, calculating the time interval of two frames of messages as the telemetering change time of the transformer substation interval corresponding to the telemetering object point number, counting the telemetering change time into the accumulated total telemetering change time of the transformer substation interval, adding one to the telemetering change times of the transformer substation interval, continuously reading the next frame of message, repeatedly executing the step until traversing all messages of the transformer substation, and obtaining the telemetering change times of each transformer substation interval and each telemetering change time;
s3: according to the telemetering change times of each transformer substation interval and each telemetering change time, counting the average telemetering change time of each transformer substation interval, the number of times that the telemetering change time is greater than the average telemetering change time and the telemetering change time;
s4: if the average telemetering change time of any transformer substation interval is larger than a first time threshold, the number of times that the telemetering change time is larger than the average telemetering change time is larger than a first specified proportion, and the number of times that the telemetering change time is larger than the average telemetering change time is smaller than a second specified proportion, the telemetering change time of the measuring and controlling device of the transformer substation interval is judged to be longer, alarm information is sent to the measuring and controlling device of the transformer substation interval, and the first time threshold is determined according to the change time index of telemetering data.
2. The telemetry data analysis method of the substation of claim 1, wherein step S3 includes: performing the following steps for each of the substation bays:
dividing the total accumulated telemetering change time by the telemetering change times to obtain an average telemetering 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 that the telemetry change time is greater than the average telemetry change time to obtain the ratio of the number of times that the telemetry change time is greater than the average telemetry change time;
and dividing the telemetry change times by the total telemetry data amount to obtain the telemetry change times ratio.
3. The telemetry data analysis method of the substation of claim 1, further comprising, after step S2, the steps of:
counting the maximum telemetering change time of each transformer substation interval according to the telemetering change time;
if the maximum telemetering 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 telecontrol device of the transformer substation, and sending alarm information for indicating the telecontrol device to miss the telemetering data; wherein the second time threshold is determined based on a time interval for which telemetry data is uploaded by the telemechanical device.
4. The telemetry data analysis method of the substation of claim 3, further comprising, after step S2, the steps of:
if the telemetering change time of any one time of any transformer substation interval is greater than a third time threshold and smaller than the second time threshold, the telecontrol device is judged to send the telemetering data of the transformer substation interval in a delayed mode, and alarm information used for indicating the telecontrol device to send the telemetering data in the delayed mode is sent out; and the third time threshold is determined according to the time-consuming duration of sending the full data on the telecontrol device.
5. The method for analyzing telemetry data of a substation according to claim 1, wherein in step S2, after the calculating the time interval of two frames of messages as the telemetry change time of the substation interval corresponding to the telemetry object point number, the method further comprises:
comparing the telemetering change time of the transformer substation interval with the recorded maximum telemetering change time of the transformer substation interval, and if the telemetering change time of the transformer substation interval is greater than the recorded maximum telemetering change time, replacing the telemetering change time of the transformer substation interval with a new maximum telemetering change time and storing the new maximum telemetering change time in a database;
and comparing the telemetering change time of the substation interval with the recorded minimum telemetering change time of the substation interval, and replacing the minimum telemetering change time with a new minimum telemetering change time and storing the new minimum telemetering change time into a database if the minimum telemetering change time is smaller than the recorded minimum telemetering change time.
6. A telemetry data analysis device of a substation, comprising:
the acquisition unit is used for acquiring message documents of the transformer substation received in the previous day and acquiring telemetering data corresponding to the type identification according to the type identification of each frame of message of the message documents;
the reading unit is used for finding a message with changed next frame of telemetering data corresponding to the telemetering object point number according to the telemetering object point number in each frame of message when reading each frame of message, calculating the time interval of two frames of messages as the telemetering change time of a transformer substation interval corresponding to the telemetering object point number, counting the telemetering change time into the accumulated total telemetering change time of the transformer substation interval, accumulating and adding one to the telemetering change times of the transformer substation interval, continuously reading the next frame of message, repeatedly executing the operation until all messages of the transformer substation are traversed, and obtaining the telemetering change times of each transformer substation interval and each telemetering change time;
the statistical unit is used for calculating the average telemetering change time of each transformer substation interval, the frequency ratio of the telemetering change time to be greater than the average telemetering change time and the telemetering change frequency ratio according to the telemetering change frequency of each transformer substation interval and each telemetering change time;
the first alarm unit is used for judging that the telemetering change time of the measuring and controlling device of any transformer substation interval is longer when the average telemetering change time of any transformer substation interval is larger than a first time threshold, the number of times that the telemetering change time is larger than the average telemetering change time is larger than a first specified proportion, and the number of times that the telemetering change time is smaller than a second specified proportion, and sending alarm information aiming at the measuring and controlling device of the transformer substation interval, wherein the first time threshold is determined according to the change time index of telemetering data.
7. The telemetry data analysis arrangement of a substation according to claim 6, wherein the statistical unit is configured to perform the following operations for each of the substation bays:
dividing the total accumulated telemetering change time by the telemetering change times to obtain an average telemetering 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 that the telemetry change time is greater than the average telemetry change time to obtain the ratio of the number of times that the telemetry change time is greater than the average telemetry change time;
and dividing the telemetry change times by the total telemetry data amount to obtain the telemetry change times ratio.
8. The telemetry data analysis device of the substation according to claim 6, further comprising a second alarm unit, configured to count a maximum telemetry change time of each substation interval according to the telemetry change time after the reading unit obtains the number of times of telemetry change of each substation interval and each time of telemetry change; and when the maximum telemetering 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 telecontrol device of the transformer substation, and sending alarm information for indicating the telecontrol device to miss the telemetering data, wherein the second time threshold is determined according to the time interval of the telemetering data sent by the telecontrol device.
9. The telemetry data analysis device of the substation of claim 8, wherein the second alarm unit is further configured to, after the reading unit obtains the number of times of telemetry changes of each substation interval and the telemetry change time of each substation interval, determine that the telemechanical device sends the telemetry data of the substation interval up in a delayed manner if the telemetry change time of any substation interval is greater than a third time threshold and less than a second time threshold, and send an alarm message indicating that the telemechanical device sends the telemetry data up in a delayed manner; and the third time threshold is determined according to the time-consuming duration of sending the full data on the telecontrol device.
10. The telemetry data analysis device of the substation according to claim 6, further comprising a recording unit, wherein the recording unit is 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 object point number, and if the telemetry change time is greater than the recorded maximum telemetry change time, replace the telemetry change time with a new maximum telemetry change time and store the new maximum telemetry change time in the database; and comparing the telemetering change time of the substation interval with the recorded minimum telemetering change time of the substation interval, and replacing the minimum telemetering change time with a new minimum telemetering change time and storing the new minimum telemetering change time into a database if the minimum telemetering change time is smaller than the recorded minimum telemetering change time.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160080229A1 (en) * | 2014-03-11 | 2016-03-17 | Hitachi, Ltd. | 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 |
| 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 |
| 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 |
| 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 |
| CN112073464A (en) * | 2020-08-06 | 2020-12-11 | 广东电网有限责任公司 | Method and system for judging and processing whether RTU (remote terminal unit) telemetry data of transformer substation is refreshed or not |
-
2020
- 2020-12-30 CN CN202011610460.8A patent/CN112636476B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160080229A1 (en) * | 2014-03-11 | 2016-03-17 | Hitachi, Ltd. | 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 |
| 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 |
| 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 |
| CN112073464A (en) * | 2020-08-06 | 2020-12-11 | 广东电网有限责任公司 | Method and system for judging and processing whether RTU (remote terminal unit) telemetry data of transformer substation is refreshed or not |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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