CN206460103U - Transformer monitors calibration equipment on-line - Google Patents
Transformer monitors calibration equipment on-line Download PDFInfo
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- CN206460103U CN206460103U CN201621194626.1U CN201621194626U CN206460103U CN 206460103 U CN206460103 U CN 206460103U CN 201621194626 U CN201621194626 U CN 201621194626U CN 206460103 U CN206460103 U CN 206460103U
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Abstract
The utility model is related to transformer on-line monitoring calibration equipment, including：First current transformer, first voltage transformer, the first merging module, the second current transformer, second voltage transformer, the second merging module, monitoring modular and clock module；First current transformer and first voltage transformer are connected with the first merging module, second current transformer and second voltage transformer are connected with the second merging module, first merging module and the second merging module are connected with clock module respectively, and the first merging module and the second merging module are connected with monitoring modular respectively.The measurement result of the second current transformer and second voltage transformer is monitored and verified in real time by the first current transformer and first voltage transformer, data exception and error can in real time, be quickly obtained, the checking precision to the second current transformer and second voltage transformer can be effectively improved.
Description
Technical field
The utility model is related to power system on-line monitoring and field of measuring technique, is monitored on-line more particularly, to transformer
Calibration equipment.
Background technology
Transformer plays the important function that signal is provided to follow-up measurement, protection and monitoring device in transformer station, and it is transported
Capable stability is particularly important.There is principle sex differernce in electronic mutual inductor, thus can not be using biography with traditional transformer
The method of calibration and equipment of system transformer.Also, traditional transformer is relatively easy due to structure, technology relative maturity is usually
The method that verification is overhauled using periodical power failure, the time limit may be even longer for 10 years.But, electronic mutual inductor is employed largely
Electronic component or optics, stability is subject to certain restrictions, whether examined from electric energy metrical or the application protected
Consider, the method that can not all use the periodic check of traditional transformer, but when being necessary should be at any time to its error characteristics
Verified.
Because whether the verification of traditional transformer or electronic mutual inductor is all rested under power down mode mostly at present
Offline verification, lack the effective means that can be monitored in the energized state to electronic mutual inductor performance, related school
Specification even more blank out is tested, so as to greatly limit the performance monitoring of electronic mutual inductor, raising and perfect, it is also constrained
Popularization and application in intelligent substation, cause in current intelligent demonstration site, partly replace electronic type using traditional transformer
Transformer, causes the omission of the model function of intelligent substation.Go down for a long time, the development to intelligent grid is brought extremely not
The influence of profit.
Research at present to electronic type voltage transformer on-line testing is less, and patent CN102645643A discloses a kind of electricity
Minor voltage transformer on-line testing system, standard mutual inductor by apparatus for automatically lifting completed to take automatically with a bus
Connect, realize the on-line testing of electronic type voltage transformer.However, because standard mutual inductor uses conventional electromagnetic mutual induction of voltage
Device, thus band when being electrically accessed power network there may be ferromagnetic resonance, bring danger to hot line job.And when voltage class is higher,
Equipment volume is big, weight weight, is unfavorable for onsite application.Patent CN104777445A discloses a kind of electronic type voltage transformer and existed
Line check system, using ring electric field sensor array as voltage sensor unit, without being joined directly together with a wire, but it is logical
The form for crossing electromagnetic induction obtains primary voltage signal, and influence will not be produced on the normal operation of circuit, but the electric field that goes in ring is passed
Sensor is electronic equipment in itself, itself can introduce electromagnetic interference, influences measurement accuracy.
Patent CN102313879A discloses a kind of online school of electronic current mutual inductor based on double clamp current coils
Check system, employs clamp air core coil as the standard channel of current transformer, still, the measurement accuracy of clamp air core coil
Influenceed very big by installation site and air gap closure degree, due to being powered installation, even if mutual using two clamp current coils
Mutually calibrate, but the measurement accuracy of each clamp coil is uncontrollable, and mutual calibration has no basis.So, in installation process and knot
Under the premise of really uncontrollable, the measurement accuracy of air core coil is uncontrollable, it is difficult to ensure the current measurement precision of normalized current passage,
So that the confidence level of check results is under suspicion.
Utility model content
Based on this, it is necessary to which there is the low defect of checking precision for traditional transformer monitoring check system, there is provided one kind
Transformer monitors calibration equipment on-line.
A kind of transformer monitors calibration equipment on-line, including：First current transformer, first voltage transformer, first are closed
And module, the second current transformer, second voltage transformer, the second merging module, monitoring modular and clock module；Described
One current transformer and the first voltage transformer are connected with first merging module, second current transformer and
The second voltage transformer is connected with second merging module, first merging module and second merging module
Be connected respectively with the clock module, and first merging module and second merging module respectively with the monitoring modular
Connection, wherein, first current transformer and second current transformer are different to be set, the first voltage transformer with
The second voltage transformer is different to be set.
In one of the embodiments, it is provided with low-power coil in first current transformer.
In one of the embodiments, first current transformer includes column support type active electric current transformer.
In one of the embodiments, the first voltage transformer includes column support type optical voltage transformer.
In one of the embodiments, the monitoring modular includes interface unit, and the interface unit is respectively with described the
One merging module and second merging module connection.
In one of the embodiments, the monitoring modular includes processing unit, the processing unit and the interface list
Member connection.
In one of the embodiments, the monitoring modular also includes communication unit, the communication unit and the processing
Unit is connected, and the communication unit is used to be connected with data resolution module.
In one of the embodiments, in addition to data resolution module, the data resolution module and the communication unit
Connection.
In one of the embodiments, in addition to alarm module, the alarm module is connected with the data resolution module.
In one of the embodiments, the clock module includes time service circuit and GPS unit, the time service circuit and institute
GPS unit connection is stated, the time service circuit is connected with first merging module and second merging module respectively, described
GPS unit is used to connect satellite, obtains clock signal.
Above-mentioned transformer on-line monitoring calibration equipment, by the first current transformer and first voltage transformer to second
The measurement result of current transformer and second voltage transformer is monitored and verified in real time, so as to it is real-time, effectively and
The data exception and error of the second current transformer and second voltage transformer are quickly obtained, so as to detect the second electric current
The running status of transformer and second voltage transformer, can be effectively improved to the second current transformer and second voltage transformer
Checking precision.
Brief description of the drawings
Fig. 1 monitors the module frame chart of calibration equipment on-line for the transformer of an embodiment；
Fig. 2 monitors the module frame chart of calibration equipment on-line for the transformer of another embodiment.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, using certain large-scale provincial power network as
Embodiment, the utility model is further elaborated with reference to accompanying drawing.It should be appreciated that specific embodiment described herein
Only to explain the utility model, it is not used to limit the utility model.
For example, a kind of transformer on-line monitoring calibration equipment, including：First current transformer, first voltage transformer,
One merging module, the second current transformer, second voltage transformer, the second merging module, monitoring modular and clock module；Institute
State the first current transformer and the first voltage transformer to be connected with first merging module, second Current Mutual Inductance
Device and the second voltage transformer are connected with second merging module, and first merging module and described second merges
Module is connected with the clock module respectively, and first merging module and second merging module respectively with the monitoring
Module is connected, wherein, first current transformer and the different setting of second current transformer, the first voltage mutual inductance
Device and the different setting of the second voltage transformer.
As shown in figure 1, the utility model transformer monitors one embodiment of calibration equipment on-line, including：First electric current
Transformer 110, first voltage transformer 120, the first merging module 130, the second current transformer 210, second voltage transformer
220th, the second merging module 230, monitoring modular 300 and clock module 400；First current transformer 110 and described
One voltage transformer 120 is connected with first merging module 130, second current transformer 210 and second electricity
Pressure transformer 220 is connected with second merging module 230, first merging module 130 and second merging module
230 are connected with the clock module 400 respectively, and first merging module 130 and second merging module 230 respectively with
The monitoring modular 300 is connected, wherein, first current transformer 110 with second current transformer 210 is different sets
Put, the first voltage transformer 120 and the different setting of the second voltage transformer 220.
In the present embodiment, the first current transformer 110 is standard electric type current transformer, first voltage transformer
120 be standard electric minor voltage transformer, and the second current transformer 210 is that second voltage is mutual by school electronic current mutual inductor
Sensor 220 is that, by school electronic type voltage transformer, first current transformer 110 and first voltage transformer 120 are used to provide
The current data and voltage data of standard, the second current transformer 210 and second voltage transformer 220 are used to provide by the electricity in school
Current data and voltage number that flow data and voltage data, i.e. the first current transformer 110 and second voltage transformer 220 are provided
According to for verified data, wherein, the class of accuracy of the first current transformer 110 and first voltage transformer 120 is higher than the
The grade of class of accuracy at least two of two current transformers 210 and second voltage transformer 220, for example, first electric current is mutual
The communication protocol of sensor 110 and first voltage transformer 120 includes IEC61850 agreements and FT3 agreements, for example, the second electric current is mutual
The communication protocol of sensor 210 and second voltage transformer 220 includes IEC61850 agreements and FT3 agreements.
For example, the first current transformer 110, first voltage transformer 120, the second current transformer 210 and second voltage
Transformer 220 is additionally operable to obtain humidity, pressure, strain, vibration and the various failure volume information of transformer, for example, the first electricity
Current transformer 110, first voltage transformer 120, the second current transformer 210 and second voltage transformer 220 are also provided for
Humidity, pressure, strain, vibration and the various failure volume information of transformer.
The clock module 400 is used to be the first current transformer 110, first voltage transformer 120, the second current transformer
210 and second voltage transformer 220 provide clock signal, for example, the first current transformer 110 obtain current data when, obtain
The clock signal of clock module 400 is taken, in such manner, it is possible to enable the first current transformer 110 to be obtained when obtaining current data
The time data at correspondence moment, so that current data is more accurate.For example, obtaining electric current in the second current transformer 210
During data, the clock signal of clock module 400 is obtained, and for example, when first voltage transformer 120 obtains voltage data, is obtained
The clock signal of clock module 400, when second voltage transformer 220 obtains voltage data, obtains the clock of clock module 400
Signal.
First merging module 130 is used to convert analog signals into data signal, and sends to monitoring modular 300, for example,
First merging module 130 is used to the analog signal of the first current transformer 110 and first voltage transformer 120 being converted to numeral
Signal, and current data and voltage data the merging coding of the first current transformer 110 and first voltage transformer 120 is defeated
Go out, and for example, the first merging module 130 be used for the current data of the first current transformer 110 and first voltage transformer 120 and
Voltage data switchs to data signal and encodes output, and for example, and the first merging module 130 is used for the He of the first current transformer 110
The current data and voltage data and the corresponding clock signal of clock module 400 of first voltage transformer 120 switch to digital letter
Number and encode output to monitoring modular 300.
Second merging module 230 is used to convert analog signals into data signal, and sends to monitoring modular 300, for example,
Second merging module 230 is used to the analog signal of the second current transformer 210 and second voltage transformer 220 being converted to numeral
Signal, and current data and voltage data the merging coding of the second current transformer 210 and second voltage transformer 220 is defeated
Go out, and for example, the second merging module 230 be used for the current data of the second current transformer 210 and second voltage transformer 220 and
Voltage data switchs to data signal and encodes output, and for example, and the second merging module 230 is used for the He of the second current transformer 210
The current data and voltage data and the corresponding clock signal of clock module 400 of second voltage transformer 220 switch to digital letter
Number and encode output to monitoring modular 300.
Specifically, monitoring modular 300 receives the signal of the first merging module 130 transmission, parses the signal, you can obtain
The current data and voltage data and corresponding time data of first current transformer 110 and first voltage transformer 120, prison
The signal that module 300 receives the transmission of the second merging module 230 is surveyed, the signal is parsed, you can the second current transformer 210 is obtained
With the current data and voltage data and corresponding time data of second voltage transformer 220, so, according to time data,
The current data from the first current transformer 110 and the second current transformer 210 of same time can be verified, it is right
The voltage data from first voltage transformer 120 and second voltage transformer 220 of same time is verified, so as to improve
Checking precision.
In one embodiment, it is provided with low-power coil in first current transformer 110.For example, in a reality
Apply in example, first current transformer 110 includes column support type active electric current transformer.
For example, first current transformer 110 is standard electric type current transformer, first current transformer 110
For the column support type active electric current transformer based on low-power coil (LPCT), its class of accuracy is higher than the second current transformer
210 at least two grades, so, because the first current transformer 110 has accuracy more, therefore, it is possible to right well
The data of second current transformer 210 are verified.
In one embodiment, the first voltage transformer 120 includes column support type optical voltage transformer.For example, the
One voltage transformer 120 is the column support type optical voltage transformer based on Pockels, so, due to first voltage transformer 120
With accuracy more, verified therefore, it is possible to the data well to second voltage transformer 220.
For example, the first merging module 130 and the second merging module 230 support that light B codes are synchronous, the μ s of synchronization accuracy≤1 can
Pass through IEC61850 and FT3 standard agreement output mutual inductor electric currents and voltage, temperature, humidity, pressure, strain, vibration and mutual inductance
The various failure volume information of device, for example, the first merging module 130 and the second merging module 230 are additionally operable to monitoring modular 300
Output current data, voltage data, temperature data, humidity data, pressure data, strain data, vibration information and transformer
Failure volume information.
For example, in embodiments, the IEC61850 standard agreements include IEC61850-7-2, IEC61850-8-1,
IEC61850-9-2 and IEC61850-9-2LE.
In one embodiment, referring again to Fig. 1, the monitoring modular 300 includes interface unit 310, the interface
Unit 310 is connected with first merging module 130 and second merging module 230 respectively.For example, the monitoring modular
300 include processing unit 320, and the processing unit 320 is connected with the interface unit 310.For example, the monitoring modular 300
Also include communication unit 330, the communication unit 330 is connected with the processing unit 320, and the communication unit 330 is used for
It is connected with data resolution module 500.
Specifically, multi-protocol adaptive communication interface standard is supported in the interface unit 310 of monitoring modular 300, for example, should
Interface unit 310 supports IEC61850 standard agreements, and monitoring modular 300 receives the first merging module 130 by interface unit 310
Current data, voltage data and the running state data sent with the second merging module 230, by processing unit 320 to electric current
The processing and verification of data, voltage data and running state data verification, are realized to transformer on-line testing and status data
MMS (Manufacturing Message Specification, manufacture message specification) conversions, and by the on-line testing data
Sent with status data by communication unit 330 to data resolution module 500, specifically, data were carried out after MMS conversions, hair
Deliver to data resolution module 500.
In one embodiment, referring again to Fig. 1, transformer on-line monitoring calibration equipment also includes data resolution module
500, the data resolution module 500 is connected with the communication unit 330, for example, transformer on-line monitoring calibration equipment is also wrapped
Alarm module 600 is included, the alarm module 600 is connected with the data resolution module 500.
Data resolution module 500 is received after the on-line testing data and status data of monitoring modular 300, and real time parsing should
Verification data and status data, judge verification data and the validity of status data, and according to verification data and status data
Outputting alarm signal is classified to alarm module 600, alarm module 600 receives alarm signal and then alarmed.
Specifically, data resolution module 500 is by analyzing the first current transformer 110 and the electricity of first voltage transformer 120
Whether the physics such as flow data, voltage data, temperature data, humidity data, pressure data, strain data, vibration information numerical quantity
More than predetermined threshold value, the single-point of electric current and voltage whether saltus step, whether amplitude be more than predetermined threshold value, and whether sampled data abnormal,
Whether synchronised clock is abnormal, and then judges whether the first current transformer 110 and first voltage transformer 120 are working properly, when
When judging the first current transformer 110 and first voltage transformer 120 working properly, then verification data is effective.
It is noted that the first current transformer, first voltage transformer, the first merging device, the second Current Mutual Inductance
Device, second voltage transformer are electronic mutual inductor, in one embodiment, electronic mutual inductor include state sensor and
Cabinet, the cabinet is installed on the transformer body, and state acquisition module, collection of simulant signal are provided with the cabinet
Module and Digital Signal Processing and communication module, the state sensor are arranged on the transformer body, and the state is passed
Sensor is connected with the state acquisition module, the state acquisition module and the collection of simulant signal module with the numeral
Signal transacting and communication module connection, the collection of simulant signal module are used to be connected with the transformer body, the numeral
Signal transacting and communication module are used to be connected with merging module.
State sensor is used for the various states for detecting transformer body, including air pressure, temperature, humidity etc., for example, the shape
State sensor is used to detect barometric information, temperature data and humidity data, for example, transformer body is additionally operable to detect electronics mutual inductance
Shelf depreciation state, state of insulation and the dielectric loss state of device；For example, state acquisition module is used to gather transformer body
Various states, state acquisition module is used for barometric information, temperature data and the humidity data for obtaining state sensor detection, and will
Barometric information, temperature data and humidity data are sent to Digital Signal Processing and communication module, for example, state acquisition module is also used
In the state of insulation information and dielectric loss status information that obtain state sensor detection；Collection of simulant signal module is used to detect
The current data and voltage data of transformer body, and current data and voltage data are sent to Digital Signal Processing and communication
Module；Digital Signal Processing and communication module are used for the data of reception state acquisition module and collection of simulant signal module, for example,
Digital Signal Processing and communication module are used for the analog signal of reception state acquisition module and collection of simulant signal module, and should
Analog signal is converted to data signal, sends to merging module.
Above-mentioned electronic mutual inductor, while collection current and voltage signals in real time, also to the operation shape of transformer body
State is monitored on-line, and current and voltage signals and running state data are sent to merging module, is realized to transformer
The comprehensive monitoring of the operation of body, so as to improve transformer body reliability of operation, it is to avoid construction transformer body is online
Monitoring device, framework of the present utility model is more simple, implements more simple, effectively reduces cost.
In order to more accurately obtain the state of transformer body, in one embodiment, the number of the state sensor
Amount is set to multiple, and multiple state sensors are connected with the state acquisition module.For example, multiple state sensings
Device is uniformly distributed in the outer surface of the transformer body.So, multiple sensors can will be different on transformer body
The state of position is detected, so as to obtain more accurate status data, for example, multiple state sensors are identical
State sensor, for example, multiple state sensors are of a sort state sensor, i.e., multiple state sensors are used to detect same
The state of one type, for example, multiple state sensors are temperature sensor, so, obtains the multiple of transformer body surface
The temperature of position, enables to the temperature detection to transformer body more accurate, it is to avoid the testing result that partial deviations are led to
Error.And for example, multiple state sensors are different state sensors, are set for example, multiple state sensors are different, example
Such as, multiple state sensors are inhomogeneous state sensor, i.e., it is different types of that multiple state sensors are respectively used to detection
State, for example, multiple state sensors are respectively used to detection temperature, humidity, gaseous state etc., in such manner, it is possible to comprehensively obtain
The state of transformer body, so as to effectively realize the monitoring to transformer body.
It is noted that electronic mutual inductor is high-voltage electrical equipment, in order to improve security, it is necessary in transformer sheet
Sulfur hexafluoride (SF6) gas is filled with vivo, to improve the insulating properties of transformer body, security is improved.In order to sulfur hexafluoride
Gas is detected, to obtain the state of transformer body in real time, it is to avoid the mutual inductance caused by leakage of sulfur hexafluoride gas
The failure of device body, or short circuit, in one embodiment, the state sensor include gaseous state sensor, for example, should
Gaseous state sensor includes baroceptor, for example, the gaseous state sensor includes humidity sensor, for example, the gas
State sensor includes temperature sensor, specifically, and the gaseous state sensor is used for the air pressure, micro- for detecting sulfur hexafluoride gas
Water and temperature etc., so that comprehensively the gaseous state of the intrinsic sulfur hexafluoride gas of transformer is comprehensively monitored,
The failure of transformer body or short circuit caused by leakage of sulfur hexafluoride gas are avoided, transformer body is effectively improved
Security.
In order to realize the comprehensive monitoring to transformer body, in one embodiment, the state sensor includes temperature
Spend sensor.For example, the state sensor includes humidity sensor.In such manner, it is possible to get the temperature of transformer body, it is wet
Degree, so as to judge whether transformer body is abnormal, can effectively improve the reliability of transformer body.For example, the state is passed
Sensor also includes in partial discharge sensor, each embodiment, and partial discharge is shelf depreciation, for example, the state sensor also includes capacitive
Transformer bulk medium be lost sensor, for example, the partial discharge sensor be used for detect transformer body shelf depreciation state and
State of insulation, capacitive transformer bulk medium loss sensor is used for the dielectric loss state for detecting transformer body, for example, should
Partial discharge sensor includes partial discharge tester.
In one embodiment, electronic mutual inductor also includes current sensor, the current sensor and the simulation
Signal acquisition module is connected, and the current sensor is used to be connected with the transformer body.For example, also including voltage sensor
Device, the voltage sensor is connected with the collection of simulant signal module, and the voltage sensor is used for and the transformer sheet
Body is connected.Specifically, current sensor and voltage sensor are respectively used to be connected to transformer body, current sensor and voltage
Sensor is respectively used to detect the electric current and voltage of transformer body, so as to obtain the current data and voltage number of transformer body
According to, the current data and voltage data of collection of simulant signal module collection current sensor and voltage sensor, and send to number
Word signal transacting and communication module, and then realize whether the state of detection transformer body is abnormal.In the present embodiment, electric current is passed
Sensor includes low-power consumption iron-core coil, Rogowski coil, coaxial capacitance potential dividing ring and capacitive divider etc., and voltage sensor includes low
Power consumption iron-core coil, Rogowski coil, coaxial capacitance potential dividing ring and capacitive divider etc..
In one embodiment, the clock module 400 includes time service circuit and GPS unit, the time service circuit and institute
GPS unit connection is stated, the time service circuit connects with first merging module 130 and second merging module 230 respectively
Connect, the GPS unit is used to connect satellite, obtains clock signal.
For example, the clock of clock module 400 makes time service circuit output signal using accurately frequency measurement and intelligence learning algorithm
Precision synchronous is kept with gps satellite, big-dipper satellite and IRIG-B (IRIG-B format time code) time reference, is eliminated because of crystal oscillator
The influence that the frequency deviation that aging is caused is brought.Specifically, the operational factor by onboard storage device constantly record and storage crystal oscillator is special
Property, when outside B codes time reference occurs abnormal or unavailable, internal punctual state is automatically switched to, and according to onboard storage
Parameter in device is compensated to crystal oscillator characteristics, makes punctual circuit continue to provide the temporal information output of high reliability,
Avoid influence of the frequency deviation to index of keeping time caused by crystal oscillator aging.
The monitoring modular 300 is additionally operable to carry out data parsing according to IEC61850 and FT3 standard agreements, by based on number
Data preprocess plus the peaceful convolution window of the second order Chinese high accuracy algorithm extract fundametal compoment amplitude and phase, and calculate than it is poor,
Angular difference and combination misalignment, precision curve is drawn according to than poor, angular difference, and the second current transformer 210 of analysis and second voltage are mutual
The data precision of sensor 220, sends alarm situations such as to precision mutation or exceeded precision drift, and sets up on-line testing MMS and believe
Table is ceased, for example, the monitoring modular 300 is additionally operable to the first current transformer 110, first voltage transformer 120, the second electric current
The current data of transformer 210 and second voltage transformer 220, voltage data, temperature data, humidity data, pressure data,
The failure volume information of strain data, vibration information and transformer carries out MMS conversions, and sets up on-line monitoring MMS information
Table, sends to data resolution module 500.For example, the monitoring modular 300 is additionally operable to first the 110, first electricity of current transformer
Press each current data, voltage data, the temperature of transformer 120, the second current transformer 210 and second voltage transformer 220
Data, humidity data, pressure data, strain data, the failure volume information of vibration information and/or transformer, carry out MMS and turn
Change, and set up on-line monitoring MMS information tables, send to data resolution module 500.
The data resolution module 500 is used for according to on-line monitoring MMS information tables and on-line testing MMS information tables to first
The validity for the verification data that voltage transformer 120, the second current transformer 210 and second voltage transformer 220 enter is carried out
Analysis judgment, carries out alarm analysis and assessment and comprehensive descision, and the data resolution module 500 is additionally operable to set alarm according to instruction
Rank and alarm mode, are alerted by default classification information, alarm level, and form visualization result output, output event
Hinder analysis report and resultant fault statistical report.
Here is a specific embodiment：
As shown in Fig. 2 in the present embodiment, transformer on-line monitoring calibration equipment includes：Standard electric minor current/voltage
Transformer and its combining unit, by school electronic current/voltage transformer and its combining unit, stand in synchronised clock, monitoring mould
Block and data resolution module.Wherein, standard electric minor current/voltage transformer and its combining unit are on-line monitoring check system
The running state data of normalized current/voltage data and standard mutual inductor is provided, wherein class of accuracy will be at least above by school
Two grades of electronic current/voltage, communications protocol supports IEC61850 agreements and FT3 agreements；By school electronic current/voltage
Transformer and its combining unit are provided by school current/voltage data and the operation shape by school transformer for on-line monitoring check system
State data, communications protocol supports IEC61850 agreements and FT3 agreements；Synchronised clock is provided together for standard and by school transformer in standing
Walk clock, it is ensured that the synchronism and validity of on-line monitoring check system current/voltage comparing；Monitoring modular supports assist more
Adaptive communications interface standard is discussed, standard and the current/voltage data and running state data by school electronic mutual inductor are received,
The MMS conversions of transformer on-line testing and status data are realized, and monitoring information and check information are sent to data parsing mould
Block；The health status of the real-time assessment electronics formula transformer of data resolution module, analyze verification data validity, according to monitoring and
The significance level of check information carries out classification alarm.
Specifically, monitoring modular passes through analytical standard current/voltage transformer temperature, humidity, pressure, strain, vibration etc.
Whether physics numerical quantity out-of-limit, and whether whether saltus step, amplitude out-of-limit for current/voltage single-point, whether sampled data abnormal, it is synchronous when
Whether clock determines whether standard source is working properly extremely, as long as standard source is judged working properly, its obtained verification data
It is exactly effective.
In the present embodiment, the standard electric type current transformer is that the column support type based on low-power coil (LPCT) has
Ource electric current transformer, for example, its class of accuracy is at least above by two grades of school electronic current mutual inductor.
In the present embodiment, the standard electric minor voltage transformer is that the column support type optical voltage based on Pockels is mutual
Sensor, for example, its class of accuracy is at least above by two grades of school electronic type voltage transformer.
In the present embodiment, the combining unit supports light B codes synchronous, the μ s of synchronization accuracy≤1, can by IEC61850 with
FT3 standard agreement output mutual inductors current/voltage, temperature, humidity, pressure, strain, vibration and the various failure volumes of transformer
Information.
In the present embodiment, the IEC61850 standard agreements include IEC61850-7-2, IEC61850-8-1,
IEC61850-9-2 and IEC61850-9-2LE.
In the present embodiment, synchronised clock, using accurately frequency measurement and intelligence learning algorithm, makes time service circuit in the station
Output signal keeps precision synchronous with gps satellite, big-dipper satellite and IRIG-B time references, eliminates because of crystal oscillator aging
The influence that the frequency deviation caused is brought.Synchronised clock is joined by the operation of onboard storage device constantly record and storage crystal oscillator in the station
Number characteristic.When outside B codes time reference occurs abnormal or unavailable, internal punctual state, and foundation can be automatically switched to
Parameter in onboard storage device is compensated to crystal oscillator characteristics, makes punctual circuit continue to provide the time letter of high reliability
Breath output, it is to avoid influence of the frequency deviation to index of keeping time caused by the crystal oscillator aging.
In the present embodiment, the monitoring modular can carry out data parsing to IEC61850 and FT3 standard agreements, pass through
Based on data prediction plus the peaceful convolution window of the second order Chinese high accuracy algorithm extracts the amplitude and phase of fundametal compoment, and calculates
Than poor, angular difference and combination misalignment, precision curve is drawn according to than poor, angular difference, is analyzed by the accuracy data of school transformer, to precision
Situations such as mutation or precision drift are exceeded sends alarm, and sets up on-line testing MMS information tables；Simultaneously by standard and by school mutual inductance
Temperature, humidity, pressure, strain, vibration and the various failure volume information of device are changed and set up on-line monitoring MMS information tables,
Issued to data resolution module.
In the present embodiment, the data resolution module can be according to on-line monitoring MMS information tables and on-line testing MMS information
Table carries out health state evaluation to standard and by school electronic mutual inductor, analyzes the validity of verification data, carries out alarm assessment
Analysis and synthesis judges, sets alarm level, alarm mode, is alerted by classification and form visual presentation, exported
Far and resultant fault statistical report.
It should be noted that in said system embodiment, included modules are simply drawn according to function logic
Point, but above-mentioned division is not limited to, as long as corresponding function can be realized；In addition, each functional module is specific
Title is also only to facilitate mutually differentiation, is not limited to protection domain of the present utility model.
In addition, one of ordinary skill in the art will appreciate that realizing all or part of step in the various embodiments described above method
It can be by program to instruct the hardware of correlation to complete, corresponding program can be stored in read/write memory medium.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of transformer monitors calibration equipment on-line, it is characterised in that including：First current transformer, first voltage mutual inductance
Device, the first merging module, the second current transformer, second voltage transformer, the second merging module, monitoring modular and clock mould
Block；First current transformer and the first voltage transformer are connected with first merging module, second electricity
Current transformer and the second voltage transformer are connected with second merging module, first merging module and described
Two merging modules are connected with the clock module respectively, and first merging module and second merging module respectively with institute
Monitoring modular connection is stated, wherein, first current transformer and the different setting of second current transformer, first electricity
Press transformer and the different setting of the second voltage transformer.
2. transformer according to claim 1 monitors calibration equipment on-line, it is characterised in that first current transformer
Inside it is provided with low-power coil.
3. transformer according to claim 2 monitors calibration equipment on-line, it is characterised in that first current transformer
Including column support type active electric current transformer.
4. transformer according to claim 1 monitors calibration equipment on-line, it is characterised in that the first voltage transformer
Including column support type optical voltage transformer.
5. transformer according to claim 1 monitors calibration equipment on-line, it is characterised in that the monitoring modular includes connecing
Mouth unit, the interface unit is connected with first merging module and second merging module respectively.
6. transformer according to claim 5 monitors calibration equipment on-line, it is characterised in that the monitoring modular includes place
Unit is managed, the processing unit is connected with the interface unit.
7. transformer according to claim 6 monitors calibration equipment on-line, it is characterised in that the monitoring modular also includes
Communication unit, the communication unit is connected with the processing unit, and the communication unit is used to be connected with data resolution module.
8. transformer according to claim 7 monitors calibration equipment on-line, it is characterised in that also parse mould including data
Block, the data resolution module is connected with the communication unit.
9. transformer according to claim 8 monitors calibration equipment on-line, it is characterised in that also including alarm module, institute
Alarm module is stated to be connected with the data resolution module.
10. transformer according to claim 1 monitors calibration equipment on-line, it is characterised in that the clock module includes
Time service circuit and GPS unit, the time service circuit and GPS unit connection, the time service circuit are closed with described first respectively
And module and second merging module connection, the GPS unit is for connecting satellite, acquisition clock signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621194626.1U CN206460103U (en) | 2016-10-27 | 2016-10-27 | Transformer monitors calibration equipment on-line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621194626.1U CN206460103U (en) | 2016-10-27 | 2016-10-27 | Transformer monitors calibration equipment on-line |
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| Publication Number | Publication Date |
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| CN206460103U true CN206460103U (en) | 2017-09-01 |
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| CN201621194626.1U Active CN206460103U (en) | 2016-10-27 | 2016-10-27 | Transformer monitors calibration equipment on-line |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405299A (en) * | 2016-10-27 | 2017-02-15 | 中国南方电网有限责任公司电网技术研究中心 | On-line monitoring and checking system for mutual inductor |
| EP3564696A1 (en) * | 2018-04-26 | 2019-11-06 | Siemens Aktiengesellschaft | Method for measuring currents at multiple measuring points of a power network using converter-measurement combinations and converter-measurement combination for carrying out the method |
| CN111198298A (en) * | 2018-11-20 | 2020-05-26 | 许继集团有限公司 | Data acquisition device suitable for multiple current sensor |
-
2016
- 2016-10-27 CN CN201621194626.1U patent/CN206460103U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405299A (en) * | 2016-10-27 | 2017-02-15 | 中国南方电网有限责任公司电网技术研究中心 | On-line monitoring and checking system for mutual inductor |
| EP3564696A1 (en) * | 2018-04-26 | 2019-11-06 | Siemens Aktiengesellschaft | Method for measuring currents at multiple measuring points of a power network using converter-measurement combinations and converter-measurement combination for carrying out the method |
| CN111198298A (en) * | 2018-11-20 | 2020-05-26 | 许继集团有限公司 | Data acquisition device suitable for multiple current sensor |
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Effective date of registration: 20210806 Address after: 510663 3 building, 3, 4, 5 and J1 building, 11 building, No. 11, Ke Xiang Road, Luogang District Science City, Guangzhou, Guangdong. Patentee after: China Southern Power Grid Research Institute Co.,Ltd. Patentee after: Beijing Aerospace Control Instrument Institute Address before: 510663 No.11 Kexiang Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee before: CSG POWER GRID TECHNOLOGY RESEARCH CENTER Patentee before: China Southern Power Grid Research Institute Co.,Ltd. Patentee before: Beijing Aerospace Control Instrument Institute |