CN108414862A - High voltage direct current neutral bus arrester energy is resistant to on-line monitoring system and method - Google Patents
High voltage direct current neutral bus arrester energy is resistant to on-line monitoring system and method Download PDFInfo
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Abstract
The present invention relates to a kind of high voltage direct current neutral bus arrester energy to be resistant to on-line monitoring system, the DC voltage measurement consequential signal output end of its first DC voltage measurement interface cabinet connects the electric signal input end of the first fibre distribution frame cabinet, first optical signal input of the light signal output end connection voltage measuring apparatus optical signal processor of the first fibre distribution frame cabinet, the current acquisition mouth of the signal output end connection electrographic recording instrument of Transient Transformer, the markers of the electrographic recording instrument connects the markers and current sampling signal interface of host computer with current sampling signal output end, the markers of voltage measuring apparatus optical signal processor connects the markers and voltage sampling signal of host computer with voltage sampling signal output end；The sensor coil of Transient Transformer is sleeved on the down conductor of neutral bus arrester.The present invention effectively can be resistant to situation by energy of the monitoring and evaluation arrester in action process, effectively increase the security reliability of high-voltage direct current operation.
Description
Technical field
The present invention relates to arrester monitoring technical fields, and in particular to a kind of high voltage direct current neutral bus arrester energy is resistance to
By on-line monitoring system and method.
Background technology
With moving forward steadily for China's electric system " transferring electricity from the west to the east, north and south supply mutually, national network " strategy, high-voltage dc transmission
Electric system will be used wider and wider in power grid is general.Compared to high-voltage AC transmission, there is D.C. high voltage transmission conveying to hold
Amount is big, long transmission distance, the advantages that small is lost, and there is no the stable problems of synchronous operation.Current conversion station is D.C. high voltage transmission
The hinge of engineering simultaneously plays a key role entire DC transmission engineering, but the AC and DC equipment manufacturing cost in station is expensive, therefore
Arrester is be unable to do without to the overvoltage protection of main equipment.
Neutral bus arrester is mounted to the lightning arrester connected in parallel group on current conversion station neutral bus, when event occurs for system line
Barrier or transverter occur that local false triggering etc. is not also easy to produce larger overvoltage on neutral bus when operated and energy is huge, to protect
Shield equipment need to not had the ability for absorbing million burnt grade energy by overvoltage damage neutral bus arrester.Although neutral bus is lightning-arrest
Device group can carry out equal properties of flow experiment in manufacture, but in actual moving process with the increase for being subjected to impact current times and
The influence of environment temperature, each valve block performance can occur to deteriorate to some extent and its nonuniformity coefficient can exceed that permissible value, from
And lead to that larger difference gradually occurs for equal properties of flow and its energy capability decreases.It is run for neutral bus arrester
In maintenance and pilot project, period and standard lack related request in all kinds of regulations at present.Simultaneously in the direct current work that put into operation
Cheng Zhong mainly measures arrester letting out under continuous running voltage for the online evaluation method of neutral bus arrester performance
Leakage current and percussion action number, but the voltage that is born when neutral bus arrester normal operation is extremely low and leakage current is microampere
Grade, therefore can not energy tolerance situation of effective monitoring and evaluation arrester in action process.
Invention content
The purpose of the present invention is to provide a kind of high voltage direct current neutral bus arrester energy tolerance on-line monitoring system and
Method, the present invention realize the on-line monitoring to runnability in neutral bus arrester group action process, pass through failure wave-recording
Assessment early warning is made to arrester with the parameters such as the overvoltage tolerance for analyzing each column neutral bus arrester, energy tolerance are calculated,
Neutral bus arrester is effectively reduced to be latched and forced outage caused by surge arrester failure without sign accident and straight-flow system
Number, improves the security reliability of system operation.
In order to solve the above technical problems, a kind of high voltage direct current neutral bus arrester energy tolerance disclosed by the invention is online
Monitoring system, it is characterised in that：It includes electrographic recording instrument, voltage measuring apparatus optical signal processor, host computer and transient state electricity
Flow sensor, wherein the current acquisition mouth of the signal output end connection electrographic recording instrument of Transient Transformer, the oscillography note
The markers of record instrument connects the markers and current sampling signal interface of host computer, voltage measuring apparatus with current sampling signal output end
The markers of optical signal processor connects the markers and voltage sampling signal interface of host computer, voltage with voltage sampling signal output end
First optical signal input of measuring device optical signal processor is used to connect the light signal output end of the first fibre distribution frame cabinet,
The electric signal input end of first fibre distribution frame cabinet is used to connect the DC voltage measurement knot of the first DC voltage measurement interface cabinet
Fruit signal output end；
The sensor coil of the Transient Transformer is sleeved on the down conductor of neutral bus arrester.
A kind of high voltage direct current neutral bus arrester energy tolerance on-line monitoring method of above system, which is characterized in that
It includes the following steps：
Step 1：When neutral bus lightning arrestor movement, Transient Transformer is under the grounding lead of neutral bus arrester
The transient current of arrester is obtained on line；
The polar curve 1 out of current conversion station is straight respectively for first DC voltage measurement interface cabinet and the second DC voltage measurement interface cabinet
Dc voltage measurements are obtained in 2 DC voltage measuring device of polar curve in galvanic electricity pressure measuring device and current conversion station；
Step 2：Electrographic recording instrument records the absolute time mark information of transient current data, and is sent together with transient current data
To host computer；
Voltage measuring apparatus optical signal processor acquires and preserves the first fibre distribution frame cabinet and the second fibre distribution frame cabinet
The two-way dc voltage measurements fiber-optic signal of output；
Voltage measuring apparatus optical signal processor, which is converted to two-way dc voltage measurements fiber-optic signal, corresponding to be had
The ethernet signal of two-way dc voltage measurements, and by after the corresponding time calibrating of two-way dc voltage measurements progress, pass through
Network interface is communicated with host computer is sent to host computer together by two-way dc voltage measurements and its absolute time mark information；
Step 3：The transient current that the host computer conveys electrographic recording instrument and voltage measuring apparatus optical signal processor
Data, the absolute time mark information of transient current data, two-way dc voltage measurements and two-way dc voltage measurements it is exhausted
Markers alignment is carried out to time scale information, and analysis is synchronized to the equal properties of flow of neutral bus arrester, energy tolerance performance
With monitoring and evaluation.
Beneficial effects of the present invention：
1, the present invention has single time 24 neutral bus arrester transient state of real-time high-precision synchronous acquisition high-voltage direct current
The function of electric current；
2, each branch arrester transient current according to acquisition, transient voltage, the present invention can calculate each column of analysis and keep away automatically
The current distribution characteristic of thunder device, overvoltage tolerance are resistant to situation with energy, and lightning-arrest to neutral bus according to monitoring criterion completion
The Performance Evaluation early warning of device；
3, in the present invention, host computer can preserve 10 seconds 100,000 points of data after extracting the real-time collection value of voltage in memory, and
It is more than the automatic startup recording of the alarms such as setting value limitation according to voltage magnitude, preserves disturbance recorder data.
4, the present invention effectively accesses the arrester group of analysis according to DC transmission system Operation Mode Selection, to actual motion
Arrester group Temporal Data automatically analyzed, generated and exported report waveform.
5, the present invention can make assessment early warning to the performance of neutral bus arrester, can effectively monitoring and evaluation arrester exist
Energy in action process is resistant to situation, effectively increases the security reliability of high-voltage direct current operation.
Description of the drawings
Fig. 1 is the systematic schematic diagram of the present invention；
Fig. 2 flows through neutral bus arrester transient current waveform when being failure in the present invention.
Horizontal axis is the time in Fig. 2, and the longitudinal axis is electric current.
Wherein, the 1-the first DC voltage measurement interface cabinet, the 1.1-the second DC voltage measurement interface cabinet, the 2-the first light
Fine distributing frame cabinet, the 2.1-the second fibre distribution frame cabinet, 3-neutral bus arresters, 4-electrographic recording instrument, 5-voltage measurements
Device optical signal processor, 6-host computers, 7-Transient Transformers.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail：
A kind of high voltage direct current neutral bus arrester energy designed by the present invention is resistant to on-line monitoring system, such as Fig. 1 institutes
Show, it includes electrographic recording instrument 4, voltage measuring apparatus optical signal processor 5, host computer 6 and the (configuration of Transient Transformer 7
Have the attachmentes such as power module, power cord, signal wire, rainproof, moisture barrier sheath), wherein the signal of Transient Transformer 7 is defeated
Outlet connects the current acquisition mouth of electrographic recording instrument 4, and the markers of the electrographic recording instrument 4 is connected with current sampling signal output end
The markers and current sampling signal interface of host computer 6, the markers and voltage sampling signal of voltage measuring apparatus optical signal processor 5
Output end connects the markers and voltage sampling signal interface of host computer 6, the first light letter of voltage measuring apparatus optical signal processor 5
Number input terminal is used to connect the light signal output end of the first fibre distribution frame cabinet 2, and the electric signal of the first fibre distribution frame cabinet 2 inputs
DC voltage measurement consequential signal output end of the end for connecting the first DC voltage measurement interface cabinet 1；
The sensor coil of the Transient Transformer 7 is sleeved on the down conductor of neutral bus arrester 3.
In above-mentioned technical proposal, electrographic recording instrument 4, voltage measuring apparatus optical signal processor 5 and host computer are arranged in directly
It monitors on-line in cabinet current relay room.
In above-mentioned technical proposal, the signal wire of Transient Transformer 7 is by pre-buried coating steel pipe through coaxial shielded cable
Ditch is connected in the on-line monitoring cabinet of DC relay room, BNC (Bayonet Nut Connector, snap-fit connector)
Output interface is connected directly with 4 voltage acquisition module BNC input interfaces of electrographic recording instrument；
In above-mentioned technical proposal, DC relay room on-line monitoring cabinet passes through armored fiber optic with two-way voltage signal output point
Cable is connected through cable duct, and voltage measuring apparatus optical signal processor 5 has upper-layer protocol and by network interface and background monitoring point
Analysis system communicates, and upload arrester is temporary after FT3 fiber-optic signals are converted to IEC61850-9-2 ethernet signals by conversion module
The real time datas such as state electric current and instantaneous voltage, virtual value, average value, history recording；
In above-mentioned technical proposal, the DC voltage measurement end of the first DC voltage measurement interface cabinet 1 is changed for accessing
1 DC voltage measuring device of polar curve in stream station.
In above-mentioned technical proposal, the Transient Transformer 7 is active Hall current sensor.
In above-mentioned technical proposal, the Transient Transformer 7 has multiple, the sensing line of each Transient Transformer 7
Circle is respectively fitted on the down conductor of corresponding neutral bus arrester 3.
In above-mentioned technical proposal, neutral bus arrester 3 is mounted near the DC transformer of high-voltage direct current power grid, is used for
Protection protection direct-flow inverter and rectifier.
In above-mentioned technical proposal, the second optical signal input of the voltage measuring apparatus optical signal processor 5 is for connecting
The light signal output end of the second fibre distribution frame cabinet 2.1 is connect, the electric signal input end of the second fibre distribution frame cabinet 2.1 is for connecting
The DC voltage measurement consequential signal output end of second DC voltage measurement interface cabinet 1.1.
The DC voltage measurement end of the second DC voltage measurement interface cabinet 1.1 is used to access the polar curve 2 in current conversion station
DC voltage measuring device.
In above-mentioned technical proposal, the first DC voltage measurement interface cabinet 1, the second DC voltage measurement interface cabinet 1.1, first
Fibre distribution frame cabinet 2, the second fibre distribution frame cabinet 2.1, neutral bus arrester 3, electrographic recording instrument 4, voltage measuring apparatus light
Signal processor 5, host computer 6 and Transient Transformer 7 are existing conventional equipment, wherein the first DC voltage measurement connects
The model AII2-205J of mouth cabinet 1, the model AII1-209J of the second DC voltage measurement interface cabinet 1.1, the first optical fiber are matched
The model AII2-204J of coil holder cabinet 2, the model AII1-208J of the second fibre distribution frame cabinet 2.1, the type of electrographic recording instrument 4
Number it is Yokogawa DL850E, voltage measuring apparatus optical signal processor 5 can complete the fiber-optic signal data to combining unit
(IEC60044-8 agreements) acquisition, recording and the function with triggering clock synchronization synchronous with DL850E, host computer 6 is common computer,
Transient Transformer 7 is the CPCO-1000-77-BP5 sensors of GMW.
In above-mentioned technical proposal, the electrographic recording instrument 4 is used to record by GPS clock module and antenna and preserve electric current
The absolute time mark information of data；Voltage measuring apparatus optical signal processor acquires two-way neutral bus voltage FT3 fiber-optic signals simultaneously
IEC61850-9-2 ethernet signals are converted to, host computer is sent to together by corresponding time calibrating and transient voltage data.
In above-mentioned technical proposal, the host computer 6 is used for electrographic recording instrument 4 and voltage measuring apparatus optical signal processor
The current signal and neutral bus voltage signal of 5 storages carry out data extraction, and are aligned using markers, to keep away neutral bus
The equal properties of flow of thunder device, energy tolerance performance synchronize analysis and monitoring and evaluation.
In above-mentioned technical proposal, the host computer 6 presets assessment strategy to the energy capability that neutral bus is taken shelter from the thunder and is
The product of arrester synchronizing current and voltage is to the integral of time, the system when each column arrester actual energy, which absorbs, is less than preset value
Prompt arrester energy tolerance situation normal；When each column arrester actual energy absorb be more than preset value when system prompt this keep away
It is abnormal that thunder device energy is resistant to situation.
A kind of high voltage direct current neutral bus arrester energy tolerance on-line monitoring method of above system, it includes following step
Suddenly：
Step 1：When neutral bus arrester 3 acts (once arrester failure will trigger voltage collecting work),
Transient Transformer 7 obtains the transient current of arrester from the down conductor of neutral bus arrester 3；
First DC voltage measurement interface cabinet 1 and the second DC voltage measurement interface cabinet 1.1 pole out of current conversion station respectively
Dc voltage measurements are obtained in 2 DC voltage measuring device of polar curve in 1 DC voltage measuring device of line and current conversion station；
Step 2：Electrographic recording instrument 4 records the absolute time mark information of transient current data, and together with transient current data
It is sent to host computer 6；
Voltage measuring apparatus optical signal processor 5 is acquired and is protected by neutral bus voltage DC measuring device in the two poles of the earth in station
Deposit the two-way dc voltage measurements fiber-optic signal of the first fibre distribution frame cabinet 2 and the output of the second fibre distribution frame cabinet 2.1；
Voltage measuring apparatus optical signal processor 5, which is converted to two-way dc voltage measurements fiber-optic signal, corresponding to be had
The IEC61850-9-2 ethernet signals of two-way dc voltage measurements, and two-way dc voltage measurements are subjected to the corresponding time
After calibration, is communicated with host computer by network interface and be sent to two-way dc voltage measurements and its absolute time mark information together
Position machine 6；
Step 3：The transient state electricity that the host computer 6 conveys electrographic recording instrument 4 and voltage measuring apparatus optical signal processor 5
Flow data, the absolute time mark information of transient current data, two-way dc voltage measurements and two-way dc voltage measurements
Absolute time mark information carries out markers alignment, and is synchronized point to the equal properties of flow of neutral bus arrester, energy tolerance performance
Analysis and monitoring and evaluation.
In above-mentioned technical proposal, electrographic recording instrument records each column arrester transient current signal by data acquisition channel,
Its current sample channel each electric current of automatic trigger when arbitrary channel current surmounts setting limit value is realized by " or triggering " pattern
Sampling channel while recording；
Host computer extracts electrographic recording instrument and the current signal in voltage measuring apparatus optical signal processing unit and voltage letter
Number, and markers parsing, alignment are carried out, then by calculating equal properties of flow to neutral bus arrester, energy tolerance
Analysis and monitoring and evaluation can be synchronized.
In above-mentioned technical proposal, electrographic recording instrument is recorded by GPS clock module and antenna and preserves each current channel
The absolute time mark information of each current sampling data point, i.e., preserve 1 sampled data at interval of 1 microsecond, and the setting of recording moment exists
The centre position of waveform ensures the integrality of recorder data and using GPS or external clock input mode and voltage measuring apparatus light
Signal processing unit synchronizes clock synchronization into row clock；Voltage measuring apparatus optical signal processing unit is on " Hour Minute Second " absolute time mark basis
On voltagerating delay value stored by newly-increased microsecond time scale, sample frequency is that 10kHz preserves one at interval of 100 microseconds and adopts
Sample data；Background monitoring analysis system by the time scale information of the voltage and the current sampling data point that upload simultaneously and data information into
Basis presets assessment strategy calculating and analyzes neutral bus arrester energy tolerance performance after row is aligned and arranges；
The calculation that neutral bus arrester transient current is unevenly distributed factor beta is：
β=n × Imax/Iarr
Wherein, n is neutral bus arrester parallel column number, ImaxTo pass through the maximum current peak of each column arrester, Iarr
For the current peak of each column arrester.When the even factor beta of current distribution is uneven≤1.02, the system prompt column arrester group flows
Performance is normal, as the even 1.05 >=β of coefficient of current distribution is uneven>The system prompt column arrester current sharing can be slight different when 1.02
Often, as the even 1.1 >=β of coefficient of current distribution is uneven>The system prompt column arrester current sharing energy moderate abnormality, works as electric current when 1.05
It is unevenly distributed factor beta>System prompt column arrester current sharing energy severely subnormal when 1.1；
It is arrester synchronizing current and voltage that host computer presets assessment strategy to the energy capability that neutral bus is taken shelter from the thunder
Product to the integral of time, system prompt arrester energy tolerance when each column arrester actual energy, which absorbs, is less than preset value
Situation is normal；When each column arrester actual energy, which absorbs, is more than preset value, system prompt arrester energy tolerance situation is different
Often；
The ENERGY E calculation of neutral bus arrester actual absorption is in transient process：
Wherein, u (t) is neutral bus transient voltage, and i (t) is each column arrester transient current, and t1 and t2 are respectively lightning-arrest
Device acts beginning and the end time of transient process.System prompt column when each column arrester actual energy absorbs E≤1.5MJ
The energy tolerance situation of arrester is normal, when each column arrester actual energy absorbs 1.8MJ >=E>System prompt column when 1.5MJ
The energy of arrester is resistant to situation mile abnormality, and when each column arrester actual energy absorbs E >=1.8MJ, the system prompt column is kept away
The energy of thunder device is resistant to situation severely subnormal.
As shown in Fig. 2, the transient current myopia of neutral bus arrester is flowed through when high-voltage direct current failure in sawtooth wave,
Period respectively may be about 20ms and 1.25kA, current duration with amplitude>100ms.The current sensor power input of the present invention
Terminals P in1 and Pin3 supply voltage is respectively DC 11V and DC 31V；Monitor DC 24V switches in cabinet on-line in DC relay room
Power supply positive and negative electrode leads at current sensor Pin1 and Pin3 terminal through 1.5*2 cables and powers；Measuring signal leading-out terminal Pin1
It is 0~5V of DC with Pin2 voltage output ranges, will believes through shielded cable ditch after being connected respectively with BNC connecting terminal positive and negative electrodes
Number it is transmitted to electrographic recording instrument；
In above-mentioned technical proposal, it is ± 1000A that current sensor, which uses single-voltage-supply cmos mode, rated current, and maximum is surveyed
Amount current amplitude is ± 1250A, and precision is ± 1%, nonlinearity<± 0.5%, bandwidth range is DC~40kHz；
In above-mentioned technical proposal, 24 data acquisition channel parallel samplings of electrographic recording instrument, the recording time is 300ms, is appointed
Gathered data is automatically saved after the triggering of meaning channel, data-interface uses Ethernet, USB flash disk or SD card interface, memory 250M hard disks
500G, sample rate 1MS/s, resolution ratio 16-bit, 0~300kHz of bandwidth；
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of high voltage direct current neutral bus arrester energy is resistant to on-line monitoring system, it is characterised in that：It includes oscillography note
Record instrument (4), voltage measuring apparatus optical signal processor (5), host computer (6) and Transient Transformer (7), wherein transient state electricity
The current acquisition mouth of the signal output end connection electrographic recording instrument (4) of flow sensor (7), the markers of the electrographic recording instrument (4)
The markers and current sampling signal interface of host computer (6), voltage measuring apparatus optical signal are connected with current sampling signal output end
The markers of processor (5) connects the markers and voltage sampling signal interface of host computer (6), voltage with voltage sampling signal output end
First optical signal input of measuring device optical signal processor (5) is used to connect the optical signal of the first fibre distribution frame cabinet (2)
Output end, the electric signal input end of the first fibre distribution frame cabinet (2) is for connecting the straight of the first DC voltage measurement interface cabinet (1)
Galvanic electricity presses measurement signals output end；
The sensor coil of the Transient Transformer (7) is sleeved on the down conductor of neutral bus arrester (3).
2. high voltage direct current neutral bus arrester energy according to claim 1 is resistant to on-line monitoring system, feature exists
In：The DC voltage measurement end of the first DC voltage measurement interface cabinet (1) is used to access 1 direct current of polar curve in current conversion station
Pressure measuring device.
3. high voltage direct current neutral bus arrester energy according to claim 1 is resistant to on-line monitoring system, feature exists
In：The Transient Transformer (7) is active Hall current sensor.
4. high voltage direct current neutral bus arrester energy according to claim 1 is resistant to on-line monitoring system, feature exists
In：The Transient Transformer (7) has multiple, and the sensor coil of each Transient Transformer (7) is respectively fitted over corresponding
On the down conductor of neutral bus arrester (3).
5. high voltage direct current neutral bus arrester energy according to claim 1 is resistant to on-line monitoring system, feature exists
In：Second optical signal input of the voltage measuring apparatus optical signal processor (5) is for connecting the second fibre distribution frame cabinet
(2.1) electric signal input end of light signal output end, the second fibre distribution frame cabinet (2.1) is surveyed for connecting the second DC voltage
Measure the DC voltage measurement consequential signal output end of interface cabinet (1.1).
6. high voltage direct current neutral bus arrester energy according to claim 5 is resistant to on-line monitoring system, feature exists
In：The DC voltage measurement end of the second DC voltage measurement interface cabinet (1.1) is used to access 2 direct current of polar curve in current conversion station
Voltage measuring apparatus.
7. high voltage direct current neutral bus arrester energy according to claim 1 is resistant to on-line monitoring system, feature exists
In：The electrographic recording instrument (4) is used to record and preserve by GPS clock module and antenna the absolute time mark letter of current data
Breath；Voltage measuring apparatus optical signal processor (5) is used to the voltage optical signal received being converted into corresponding voltage digital to believe
Number, and corresponding time calibrating is carried out to voltage digital signal.
8. high voltage direct current neutral bus arrester energy according to claim 7 is resistant to on-line monitoring system, feature exists
In：The host computer (6) is used to believe the electric current that electrographic recording instrument (4) and voltage measuring apparatus optical signal processor (5) store
Number and neutral bus voltage signal carry out data extraction, and be aligned using markers, to the Jun Liute of neutral bus arrester
Property, energy tolerance performance synchronize analysis and monitoring and evaluation.
9. high voltage direct current neutral bus arrester energy according to claim 7 is resistant to on-line monitoring system, feature exists
In：It is arrester synchronizing current and electricity that the host computer (6) presets assessment strategy to the energy capability that neutral bus is taken shelter from the thunder
The product of pressure is to the integral of time, and when each column arrester actual energy, which absorbs, is less than preset value, the system prompt arrester energy is resistance to
It is normal by situation；When each column arrester actual energy, which absorbs, is more than preset value, system prompt arrester energy tolerance situation is different
Often.
10. a kind of high voltage direct current neutral bus arrester energy of system described in claim 1 is resistant to on-line monitoring method, special
Sign is that it includes the following steps：
Step 1：When neutral bus arrester (3) act, Transient Transformer (7) connecing from neutral bus arrester (3)
The transient current of arrester is obtained on ground downlead；
First DC voltage measurement interface cabinet (1) and the second DC voltage measurement interface cabinet (1.1) pole out of current conversion station respectively
Dc voltage measurements are obtained in 2 DC voltage measuring device of polar curve in 1 DC voltage measuring device of line and current conversion station；
Step 2：Electrographic recording instrument (4) records the absolute time mark information of transient current data, and is sent together with transient current data
To host computer (6)；
Voltage measuring apparatus optical signal processor (5) acquires and preserves the first fibre distribution frame cabinet (2) and the second fibre distribution frame
The two-way dc voltage measurements fiber-optic signal of cabinet (2.1) output；
Voltage measuring apparatus optical signal processor (5), which is converted to two-way dc voltage measurements fiber-optic signal, corresponding has two
The ethernet signal of road dc voltage measurements, and by after the corresponding time calibrating of two-way dc voltage measurements progress, pass through net
Mouth is communicated with host computer is sent to host computer (6) together by two-way dc voltage measurements and its absolute time mark information；
Step 3：The transient state that the host computer (6) conveys electrographic recording instrument (4) and voltage measuring apparatus optical signal processor (5)
Current data, the absolute time mark information of transient current data, two-way dc voltage measurements and two-way dc voltage measurements
Absolute time mark information carry out markers alignment, and to the equal properties of flow of neutral bus arrester, energy tolerance performance synchronize
Analysis and monitoring and evaluation.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426573A (en) * | 2019-07-24 | 2019-11-08 | 国网湖南省电力有限公司 | A kind of lightning protection anti-ice-flashover composite insulator on-line monitoring method |
| CN112415261A (en) * | 2020-11-12 | 2021-02-26 | 广东电网有限责任公司湛江供电局 | Online monitoring system and method for line arrester |
| CN113960424A (en) * | 2021-10-19 | 2022-01-21 | 广东电网有限责任公司 | Continuous lightning deterioration evaluation method for valve plate of lightning arrester |
| CN113960395A (en) * | 2021-10-19 | 2022-01-21 | 广东电网有限责任公司 | Method and device for evaluating temperature tolerance of valve plate of lightning arrester |
| CN113960423A (en) * | 2021-10-19 | 2022-01-21 | 广东电网有限责任公司 | Method for evaluating impact energy tolerance capability of valve plate of lightning arrester |
| CN114137288A (en) * | 2021-11-15 | 2022-03-04 | 西南交通大学 | Lightning arrester performance evaluation method under single lightning stroke considering energy extraction |
| CN114325080A (en) * | 2021-12-13 | 2022-04-12 | 广东电网有限责任公司 | Method, device and system for acquiring energy absorption of metal oxide lightning arrester |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426573A (en) * | 2019-07-24 | 2019-11-08 | 国网湖南省电力有限公司 | A kind of lightning protection anti-ice-flashover composite insulator on-line monitoring method |
| CN112415261A (en) * | 2020-11-12 | 2021-02-26 | 广东电网有限责任公司湛江供电局 | Online monitoring system and method for line arrester |
| CN113960424A (en) * | 2021-10-19 | 2022-01-21 | 广东电网有限责任公司 | Continuous lightning deterioration evaluation method for valve plate of lightning arrester |
| CN113960395A (en) * | 2021-10-19 | 2022-01-21 | 广东电网有限责任公司 | Method and device for evaluating temperature tolerance of valve plate of lightning arrester |
| CN113960423A (en) * | 2021-10-19 | 2022-01-21 | 广东电网有限责任公司 | Method for evaluating impact energy tolerance capability of valve plate of lightning arrester |
| CN114137288A (en) * | 2021-11-15 | 2022-03-04 | 西南交通大学 | Lightning arrester performance evaluation method under single lightning stroke considering energy extraction |
| CN114325080A (en) * | 2021-12-13 | 2022-04-12 | 广东电网有限责任公司 | Method, device and system for acquiring energy absorption of metal oxide lightning arrester |
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