CN104280634A - Online monitoring system for capacitive device of transformer substation and monitoring method - Google Patents
Online monitoring system for capacitive device of transformer substation and monitoring method Download PDFInfo
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- CN104280634A CN104280634A CN201410512731.4A CN201410512731A CN104280634A CN 104280634 A CN104280634 A CN 104280634A CN 201410512731 A CN201410512731 A CN 201410512731A CN 104280634 A CN104280634 A CN 104280634A
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Abstract
The invention discloses an online monitoring system for a capacitive device of a transformer substation. The online monitoring system for the capacitive device of the transformer substation comprises a monitoring center and an intelligent electronic device, wherein the monitoring center and the intelligent electronic device are connected through the Ethernet, the intelligent electronic device is also connected with a PT voltage acquisition terminal and a capacitive device monitoring terminal, a communication and time comparison multiplexing device a is installed on the intelligent electronic device, a communication and time comparison multiplexing device c is installed on the PT voltage acquisition terminal, a communication and time comparison multiplexing device b is installed on the capacitive device monitoring terminal, and the communication and time comparison multiplexing device a is connected with the communication and time comparison multiplexing device c and the communication and time comparison multiplexing device b through clock and data buses respectively. The invention further discloses a monitoring method for the online monitoring system. According to the monitoring method, time division multiplexing of time and data is achieved, both time signals and data signals can be transmitted through one RS485 bus, and mutual interference of the two kinds of signals is avoided. According to the online monitoring system for the capacitive device of the transformer substation, the structure is simple, the utilization rate of wires is high, the use amount of on-site cables is small, and the construction intensity is low.
Description
Technical field
The invention belongs to substation equipment monitoring technical field, be specifically related to a kind of transformer substation capacitor equipment on-line monitoring system, the invention still further relates to a kind of monitoring method of transformer substation capacitor equipment on-line monitoring system.
Background technology
Transformer substation capacitor equipment on-line monitoring needs voltage transformer (VT) (PT) the secondary side voltage signal under the ground wire electric current (Leakage Current) of synchronous acquisition tested device and same bus, the size of the characteristic quantity such as total current, current in resistance property, capacity current of capacitive equipment is calculated, the last deterioration state analyzing product to be tested according to measured value according to measured value.The sample-synchronous of capacitive equipment on-line monitoring to Leakage Current and PT voltage requires very high, and the mistiming of sampling determines the measuring accuracy of on-line monitoring system.In order to improve the synchronization accuracy of sampling, ensure the measuring accuracy of capacitive equipment on-line monitoring, when device fabrication producer proposes GPS couple, pulse pair time, B code pair time the kinds of schemes such as (IRIG-B).Wherein during B code pair, precision is high, cost is low, good in anti-interference performance, is widely used in transformer substation capacitor type equipment on-line monitoring.
And at present transformer station's capacitive apparatus on-line monitoring system had both comprised communication bus and comprises B code bus, framework more complicated, conductor efficiency were low, on-site cable use amount is large, construction intensity large, and needed to use a large amount of bus hubs; The B coded signal that transformer substation capacitor equipment on-line monitoring system uses at present simultaneously all comes from B code clock source, along with the increase of monitoring terminal, the load number also corresponding increase of B code clock source carry, this proposes challenge to the carrying load ability of B code clock source and impedance matching, B code clock bus may be caused to collapse, cause time consistency sex chromosome mosaicism of entirely standing.
Summary of the invention
The object of this invention is to provide a kind of transformer substation capacitor equipment on-line monitoring system, solve the problem that on-line monitoring conductor efficiency is low, on-site cable use amount is large existed in prior art.
Another object of the present invention is to the monitoring method that transformer substation capacitor equipment on-line monitoring system is provided.
The first technical scheme of the present invention is, a kind of transformer substation capacitor equipment on-line monitoring system, comprise the Surveillance center and intelligent electronic device that are connected by Ethernet, intelligent electronic device is also connected to PT voltage acquisition terminal, capacitive equipment monitoring terminal, intelligent electronic device is provided with communication and pair time multiplexer a, PT voltage acquisition terminal is provided with communication and pair time multiplexer c, capacitive equipment monitoring terminal is provided with communication and pair time multiplexer b, communication and pair time multiplexer a by clock and data bus respectively with communication and pair time multiplexer c, communication and pair time multiplexer b connect.
The feature of the first technical scheme of the present invention is also:
Clock and data bus are RS485 bus.
Communication and pair time multiplexer a, communication and pair time multiplexer b, communication and pair time multiplexer c structure be: comprise CPLD chip, CPLD chip be connected to level transferring chip a, level transferring chip b, crystal oscillator, power supply.
CPLD chip is EPM570.
Level transferring chip a, level transferring chip b are MAX485.
The second technical scheme of the present invention is, a kind of transformer substation capacitor equipment on-line monitoring method, and concrete implementation step is as follows:
The signal with temporal information of step 1, Surveillance center's reception gps satellite;
Step 2, Surveillance center send the signal with temporal information received in step 1 to intelligent electronic device, and intelligent electronic device transmits B code code element or data according on the temporal information select time read in real time and data bus.
The feature of the second technical scheme of the present invention is also:
In step 2, be sampling instant when the temporal information of reading is the integral multiple of 10 minutes; If the temporal information read in real time be adopt before 3 minutes and after adopting 3 minutes, what time and data bus transmitted is B code code element; If the temporal information read in real time be adopt after 4-7 minute, what time and data bus transmitted is data;
The concrete implementation step in step 2, time and data bus transmitting B code code element is:
Step a, intelligent electronic device the signal with temporal information received from Surveillance center is sent to communication and pair time multiplexer a;
Step b, communication and pair time multiplexer a in the IED data resolution module of CPLD chip the signal with temporal information in step a is resolved to automatically as temporal information, temporal information sends to time generation module generation time, the time produced sends to B code coding module to be encoded to B code code element again, B code code element sent to communication interface to select module again, simultaneous communications and pair time multiplexer a in crystal oscillator automatically produce pulse and pass to time generation module in CPLD chip;
B code code element in step c, step b selects module to output to level transferring chip a by communication interface, level transferring chip a by time and data bus send to communication and pair time multiplexer c, communication and pair time multiplexer b level transferring chip b;
B code code element in steps d, step c in level transferring chip b send to communication and pair time multiplexer c, communication and pair time multiplexer b CPLD chip communication data identification module in, again by sending B code decoding module decodes to, be the temporal information of PT voltage acquisition terminal, capacitive equipment monitoring terminal pot life by B code symbol decoding, during for PT voltage acquisition terminal, capacitive equipment monitoring terminal pair.
The concrete implementation step in step 2, time and data bus transmitting data is:
Step a, intelligent electronic device to communication and pair time the multiplexer a information that transmits automatically resolved to data upload command frame by the IED data resolution module of CPLD chip, data upload command frame is directly selected module to be exported by communication interface;
The data upload command frame exported from communication interface module in step b, step a passes to level transferring chip a, level transferring chip a by time and data bus data upload command frame sent to communication and pair time multiplexer c, communication and pair time multiplexer b level transferring chip b;
Step c, data upload command frame in level transferring chip b in step b sends the communication data identification module in CPLD chip to, communication data identification module sends data upload command frame to PT voltage acquisition terminal, capacitive equipment monitoring terminal, PT voltage acquisition terminal, capacitive equipment monitoring terminal is by image data, data comprise capacitive voltage mutual inductor, the fundamental voltage amplitude of capacitive current mutual inductor end shield current signal, phase place, frequency, harmonic amplitude, by the data that collect by communication and pair time multiplexer c, communication and pair time multiplexer b level transferring chip b send to communication and pair time multiplexer a level transferring chip a, send to again in intelligent electronic device, finally according to agreement IEC61850, data packing is sent to Surveillance center by Ethernet by intelligent electronic device.
The invention has the beneficial effects as follows:
1). a kind of transformer substation capacitor equipment on-line monitoring of the present invention system by use communication and pair time multiplexer effectively simplify bus network, make the structure of on-line monitoring system simpler.
2). a kind of transformer substation capacitor equipment on-line monitoring of the present invention system by use communication and pair time multiplexer after, communication bus and B code bus merge into a clock and data bus, add the utilization factor of bus, effectively reduce use amount and the construction intensity of on-site cable.
3). a kind of transformer substation capacitor equipment on-line monitoring of the present invention system by use communication and pair time multiplexer, avoid from the B code clock source directly number of winning the confidence, eliminate B code clock source carrying load ability and resistance matching problem.
4). a kind of transformer substation capacitor equipment on-line monitoring of the present invention system by use communication and pair time multiplexer, no longer need RS485 bus hub, effectively saved cost.
Accompanying drawing explanation
Fig. 1 is existing transformer substation capacitor equipment on-line monitoring system architecture schematic diagram;
Fig. 2 is a kind of transformer substation capacitor equipment on-line monitoring of the present invention system architecture schematic diagram;
Fig. 3 is the connection diagram of capacitive equipment and intelligent electronic device in on-line monitoring system of the present invention;
Fig. 4 be in on-line monitoring system of the present invention communication and pair time multiplexer structural representation;
Fig. 5 is the time-sharing multiplex schematic diagram of B code and data on time and data bus in on-line monitoring system of the present invention;
Fig. 6 be in on-line monitoring system of the present invention intelligent electronic device and communication and pair time multiplexer a message transmitting procedure schematic diagram;
Fig. 7 be in on-line monitoring system of the present invention capacitive equipment monitoring terminal and communication and pair time multiplexer b message transmitting procedure schematic diagram;
Fig. 8 be in on-line monitoring system of the present invention PT voltage acquisition terminal and communication and pair time multiplexer c message transmitting procedure schematic diagram.
In figure, 1. intelligent electronic device, 2.PT voltage acquisition terminal, 3. capacitive equipment monitoring terminal, 4. communication and pair time multiplexer c, 5. communication and pair time multiplexer b, 6. communication and pair time multiplexer a, 7. Surveillance center, 8.CPLD chip, 9. level transferring chip a, 10. level transferring chip b, 11. crystal oscillators, 12. power supplys.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Existing based on transformer substation capacitor equipment on-line monitoring system architecture during B code pair as shown in Figure 1, comprise B code clock source 13, B code clock source 13 connects intelligent electronic device 1, PT voltage acquisition terminal 2 and capacitive equipment monitoring terminal 3 respectively by B code bus (adopting RS485 bus), intelligent electronic device 1 connects PT voltage acquisition terminal 2 and capacitive equipment monitoring terminal 3 respectively by communication bus (adopting RS485 bus), and intelligent electronic device 1 is connected with Surveillance center 7 by Ethernet.B code clock source receives the temporal information of gps satellite, and temporal information coding is become IRIG-B code element, PT voltage acquisition terminal 2 and capacitive equipment monitoring terminal 3 is sent to finally by B code bus, PT voltage acquisition terminal 2 and capacitive equipment monitoring terminal 3 are decoded by B code decoder module after receiving B code code element immediately, if the B code time is identical with the acquisition time of setting, PT voltage acquisition terminal 2 and capacitive equipment monitoring terminal 3 are sampled to PT voltage or Leakage Current immediately respectively; After PT voltage acquisition terminal 2 and capacitive equipment monitoring terminal 3 have been sampled, computing is carried out to the data collected and packs, waiting receive the request of data that intelligent electronic device 1 sent by communication bus after, packed Monitoring Data is sent to intelligent electronic device 1 by communication bus, intelligent electronic device 1 carries out final calculating and modeling to all measured values, it is made to meet IEC61850 stipulations, be sent to Surveillance center 7 eventually through Ethernet, carry out the data analysis in later stage, breakdown judge, displaying, pre-alarm, storage etc.
A kind of transformer substation capacitor equipment on-line monitoring of the present invention system, structure as shown in Figure 2, comprise the Surveillance center 7 and intelligent electronic device 1 that are connected by Ethernet, intelligent electronic device 1 is also connected to PT voltage acquisition terminal 2, capacitive equipment monitoring terminal 3, as shown in Figure 3, intelligent electronic device 1 is provided with communication and pair time multiplexer a6, PT voltage acquisition terminal 2 is provided with communication and pair time multiplexer c4, capacitive equipment monitoring terminal 3 is provided with communication and pair time multiplexer b5, communication and pair time multiplexer a6 by clock and data bus (adopting RS485 bus) respectively with communication and pair time multiplexer c4, communication and pair time multiplexer b5 connect.Communication and pair time multiplexer a6, communication and pair time multiplexer b5, communication and pair time multiplexer c4 structure as shown in Figure 4, comprise CPLD chip 8 (CPLD chip 8 is EPM570), CPLD chip 8 is connected to level transferring chip a9 (level transferring chip a9 is MAX485), level transferring chip b10 (level transferring chip b10 is MAX485), crystal oscillator 11, power supply 12.
A kind of transformer substation capacitor equipment on-line monitoring of the present invention method, concrete implementation step is as follows:
Step 1, Surveillance center 7 receive the signal with temporal information of gps satellite;
Step 2, Surveillance center 7 send the signal with temporal information received in step 1 to intelligent electronic device 1, and intelligent electronic device 1 is B code code element or data according to what the temporal information select time read in real time and data bus transmitted; The temporal information read is sampling instant when being the integral multiple of 10 minutes; If the temporal information read in real time be adopt before 3 minutes and after adopting 3 minutes, what time and data bus transmitted is B code code element; If the temporal information read in real time be adopt after 4-7 minute, what time and data bus transmitted is data;
The concrete implementation step in step 2, time and data bus transmitting B code code element is:
Step a, intelligent electronic device 1 signal with temporal information received from Surveillance center 7 is sent to communication and pair time multiplexer a6;
Step b, communication and pair time multiplexer a6 in the IED data resolution module of CPLD chip 8 signal with temporal information in step a is resolved to temporal information automatically, temporal information sends to time generation module generation time, the time produced sends to B code coding module to be encoded to B code code element again, B code code element sent to communication interface to select module again, simultaneous communications and pair time multiplexer a6 in crystal oscillator 11 automatically produce pulse and pass to time generation module in CPLD chip 8;
B code code element in step c, step b selects module to output to level transferring chip a9 by communication interface, level transferring chip a9 by time and data bus send to communication and pair time multiplexer c4, communication and pair time multiplexer b5 level transferring chip b10;
B code code element in steps d, step c in level transferring chip b10 send to communication and pair time multiplexer c4, communication and pair time multiplexer b5 CPLD chip 8 communication data identification module in, again by sending B code decoding module decodes to, be the temporal information of PT voltage acquisition terminal 2, capacitive equipment monitoring terminal 3 pot life by B code symbol decoding, during for PT voltage acquisition terminal 2, capacitive equipment monitoring terminal 3 pairs;
The concrete implementation step in step 2, time and data bus transmitting data is:
Step a, intelligent electronic device 1 give communication and pair time the multiplexer a6 information that transmits automatically resolved to data upload command frame by the IED data resolution module of CPLD chip 8, data upload command frame is directly selected module to be exported by communication interface;
The data upload command frame exported from communication interface module in step b, step a passes to level transferring chip a9, level transferring chip a9 by time and data bus data upload command frame sent to communication and pair time multiplexer c4, communication and pair time multiplexer b5 level transferring chip b10;
Step c, data upload command frame in level transferring chip b10 in step b sends the communication data identification module in CPLD chip 8 to, communication data identification module sends data upload command frame to PT voltage acquisition terminal 2, capacitive equipment monitoring terminal 3, PT voltage acquisition terminal 2, capacitive equipment monitoring terminal 3 is by image data, data comprise capacitive voltage mutual inductor, the fundamental voltage amplitude of capacitive current mutual inductor end shield current signal, phase place, frequency, harmonic amplitude, by the data that collect by communication and pair time multiplexer c4, communication and pair time multiplexer b5 level transferring chip b10 send to communication and pair time multiplexer a6 level transferring chip a9, send in intelligent electronic device 1 again, finally according to agreement IEC61850, data packing is sent to Surveillance center 7 by Ethernet by intelligent electronic device 1.
Wherein IED data resolution module, time generation module, B code coding module, communication interface select module, communication data identification module, B code decoder module to be the functional module of CPLD chip 8 by programming generation.
The capacitive equipment on-line monitoring system sampling time is divided into example with 8:10, and as shown in Fig. 5,6,7,8, process is:
Signal (hereinafter referred to as time signal) with temporal information in gps satellite 1 is sent to Surveillance center 7, time signal is sent to intelligent electronic device 1 by Surveillance center 7, intelligent electronic device 1 is according to the temporal information read and sampling time (PT voltage acquisition terminal 2, capacitive equipment monitoring terminal 3 is sampled to measured signal when temporal information is the integral multiple of 10 minutes, this example is divided into sampling instant analysis with 8:10) compare, if temporal information is 8:07-8:13, the CS1 of intelligent electronic device 1 is high, CS2 is low, PT voltage acquisition terminal 2, the CS3 of capacitive equipment monitoring terminal 3 is low, time and data bus for transmit B code clock (temporal information be sent to from intelligent electronic device 1 communication and pair time multiplexer a6 be encoded as B code clock, B code clock by time and data transmission bus be sent to communication and pair time multiplexer c4 and communication and pair time multiplexer b5 be decoded as PT voltage acquisition terminal 2, capacitive equipment monitoring terminal 3 can temporal information) for PT voltage acquisition terminal 2, during capacitive equipment monitoring terminal 3 pairs, if temporal information is 8:14-8:17, CS1 is low, CS2 is low, CS3 is low, time and data bus are for transmitting data, intelligent electronic device 1 by communication and pair time multiplexer a6, again respectively by communication and pair time multiplexer c4, communication and pair time multiplexer b5 to PT voltage acquisition terminal 2, capacitive equipment monitoring terminal 3 sends data acquisition command, CS2 becomes height, intelligent electronic device 1 becomes receiving mode, PT voltage acquisition terminal 2, after capacitive equipment monitoring terminal 3 receives data acquisition command, CS3 becomes height, by the data that collect respectively by communication and pair time multiplexer c4, communication and pair time multiplexer b5, again by communication and pair time multiplexer a6 send to intelligent electronic device 1, data packing is sent to Surveillance center 7 by Ethernet according to agreement IEC61850 by intelligent electronic device 1 again, Surveillance center 7 is to the data analysis judgement etc. received.
A kind of transformer substation capacitor equipment on-line monitoring of the present invention system, just achieved by means of only a RS485 bus delivery time and data by the time-sharing multiplex of time and data bus (adopting RS485 bus) upper time, data, and two kinds of signals do not interfere with each other.
Claims (9)
1. a transformer substation capacitor equipment on-line monitoring system, comprise the Surveillance center (7) and intelligent electronic device (1) that are connected by Ethernet, intelligent electronic device (1) is also connected to PT voltage acquisition terminal (2), capacitive equipment monitoring terminal (3), it is characterized in that, described intelligent electronic device (1) is provided with communication and pair time multiplexer a (6), described PT voltage acquisition terminal (2) is provided with communication and pair time multiplexer c (4), described capacitive equipment monitoring terminal (3) is provided with communication and pair time multiplexer b (5), communication and pair time multiplexer a (6) by clock and data bus respectively with communication and pair time multiplexer c (4), communication and pair time multiplexer b (5) connect.
2. a kind of transformer substation capacitor equipment on-line monitoring system according to claim 1, it is characterized in that, described clock and data bus are RS485 bus.
3. a kind of transformer substation capacitor equipment on-line monitoring system according to claim 1, it is characterized in that, described communication and pair time multiplexer a (6), communication and pair time multiplexer b (5), communication and pair time multiplexer c (4) structure be: CPLD chip (8), CPLD chip (8) is connected to level transferring chip a (9), level transferring chip b (10), crystal oscillator (11), power supply (12).
4. a kind of transformer substation capacitor equipment on-line monitoring system according to claim 3, is characterized in that, described CPLD chip (8) is EPM570.
5. a kind of transformer substation capacitor equipment on-line monitoring system according to claim 3, is characterized in that, described level transferring chip a (9), level transferring chip b (10) are MAX485.
6. a transformer substation capacitor equipment on-line monitoring method, is characterized in that, adopt monitoring system, its structure is:
Comprise the Surveillance center (7) and intelligent electronic device (1) that are connected by Ethernet, intelligent electronic device (1) is also connected to PT voltage acquisition terminal (2), capacitive equipment monitoring terminal (3), it is characterized in that, described intelligent electronic device (1) is provided with communication and pair time multiplexer a (6), described PT voltage acquisition terminal (2) is provided with communication and pair time multiplexer c (4), described capacitive equipment monitoring terminal (3) is provided with communication and pair time multiplexer b (5), communication and pair time multiplexer a (6) by clock and data bus respectively with communication and pair time multiplexer c (4), communication and pair time multiplexer b (5) connect,
Described clock and data bus are RS485 bus;
Described communication and pair time multiplexer a (6), communication and pair time multiplexer b (5), communication and pair time multiplexer c (4) structure be: CPLD chip (8), CPLD chip (8) is connected to level transferring chip a (9), level transferring chip b (10), crystal oscillator (11), power supply (12);
Described CPLD chip (8) is EPM570;
Described level transferring chip a (9), level transferring chip b (10) are MAX485;
Concrete implementation step is as follows:
The signal with temporal information of step 1, Surveillance center (7) reception gps satellite;
Step 2, Surveillance center (7) send the signal with temporal information received in step 1 to intelligent electronic device (1), and intelligent electronic device (1) transmits B code code element or data according on the temporal information select time read in real time and data bus.
7. the monitoring method of a kind of transformer substation capacitor equipment on-line monitoring system according to claim 6, is characterized in that, in described step 2, is sampling instant when the temporal information of reading is the integral multiple of 10 minutes; If the temporal information read in real time is 3 minutes after before sampling 3 minutes and sampling, what time and data bus transmitted is B code code element; If the temporal information read in real time is the 4-7 minute after sampling, what time and data bus transmitted is data.
8. the monitoring method of a kind of transformer substation capacitor equipment on-line monitoring system according to claim 6, is characterized in that, the concrete implementation step in described step 2, time and data bus transmitting B code code element is:
Step a, intelligent electronic device (1) signal with temporal information received from Surveillance center (7) is sent to communication and pair time multiplexer a (6);
Step b, communication and pair time multiplexer a (6) in the IED data resolution module of CPLD chip (8) signal with temporal information in step a is resolved to temporal information automatically, temporal information sends to time generation module generation time, the time produced sends to B code coding module to be encoded to B code code element again, B code code element sent to communication interface to select module again, simultaneous communications and pair time multiplexer a (6) in crystal oscillator (11) automatically produce pulse and pass to time generation module in CPLD chip (8);
B code code element in step c, step b by communication interface select module output to level transferring chip a (9), level transferring chip a (9) by time and data bus send to communication and pair time multiplexer c (4), communication and pair time multiplexer b (5) level transferring chip b (10);
B code code element in steps d, step c in level transferring chip b (10) send to communication and pair time multiplexer c (4), communication and pair time multiplexer b (5) CPLD chip (8) communication data identification module in, again by sending B code decoding module decodes to, be the temporal information of PT voltage acquisition terminal (2), capacitive equipment monitoring terminal (3) pot life by B code symbol decoding, during for PT voltage acquisition terminal (2), capacitive equipment monitoring terminal (3) pair.
9. the monitoring method of a kind of transformer substation capacitor equipment on-line monitoring system according to claim 8, is characterized in that, in described step 2, the concrete implementation step of time and data bus transmission data is:
Step a, intelligent electronic device (1) to communication and pair time multiplexer a (6) information that transmits automatically resolved to data upload command frame by the IED data resolution module of CPLD chip (8), data upload command frame is directly selected module to be exported by communication interface;
The data upload command frame exported from communication interface module in step b, step a passes to level transferring chip a (9), level transferring chip a (9) by time and data bus data upload command frame sent to communication and pair time multiplexer c (4), communication and pair time multiplexer b (5) level transferring chip b (10);
Step c, data upload command frame in level transferring chip b (10) in step b sends the communication data identification module in CPLD chip (8) to, communication data identification module sends data upload command frame to PT voltage acquisition terminal (2), capacitive equipment monitoring terminal (3), PT voltage acquisition terminal (2), capacitive equipment monitoring terminal (3) is by image data, data comprise capacitive voltage mutual inductor, the fundamental voltage amplitude of capacitive current mutual inductor end shield current signal, phase place, frequency, harmonic amplitude, by the data that collect by communication and pair time multiplexer c (4), communication and pair time multiplexer b (5) level transferring chip b (10) send to communication and pair time multiplexer a (6) level transferring chip a (9), send in intelligent electronic device (1) again, finally according to agreement IEC61850, data packing is sent to Surveillance center (7) by Ethernet by intelligent electronic device (1).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106249689A (en) * | 2016-09-19 | 2016-12-21 | 东北大学 | A kind of based on the electric melting magnesium furnace data collecting system being wirelessly transferred and method |
| CN107861009A (en) * | 2017-12-25 | 2018-03-30 | 国网宁夏电力有限公司固原供电公司 | A kind of monitoring method based on electric transmission line lightning arrester on-line monitoring system |
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Effective date of registration: 20170531 Address after: 430014, Hubei City, Wuhan Province, after the Lake District, 5 stone road, No. 4, 3 Applicant after: ANHUA INTEL-TECH CO.,LTD. Address before: 710048 Shaanxi province Xi'an Beilin District Jinhua Road No. 19 Applicant before: XI'AN POLYTECHNIC University |
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Denomination of invention: On line monitoring system and monitoring method for capacitive equipment in substation Effective date of registration: 20220930 Granted publication date: 20170707 Pledgee: Bank of China Limited Wuhan Municipal sub branch Pledgor: ANHUA INTEL-TECH CO.,LTD. Registration number: Y2022420000337 |
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