CN202126472U - Leakage current online monitoring device for zinc oxide arrester based on wireless synchronous techniques - Google Patents

Leakage current online monitoring device for zinc oxide arrester based on wireless synchronous techniques Download PDF

Info

Publication number
CN202126472U
CN202126472U CN2011201819017U CN201120181901U CN202126472U CN 202126472 U CN202126472 U CN 202126472U CN 2011201819017 U CN2011201819017 U CN 2011201819017U CN 201120181901 U CN201120181901 U CN 201120181901U CN 202126472 U CN202126472 U CN 202126472U
Authority
CN
China
Prior art keywords
leakage current
zinc oxide
oxide arrester
wireless
current
Prior art date
Application number
CN2011201819017U
Other languages
Chinese (zh)
Inventor
衡思坤
吴茂刚
朱立位
韦海荣
Original Assignee
江苏省电力公司连云港供电公司
南京导纳能科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 江苏省电力公司连云港供电公司, 南京导纳能科技有限公司 filed Critical 江苏省电力公司连云港供电公司
Priority to CN2011201819017U priority Critical patent/CN202126472U/en
Application granted granted Critical
Publication of CN202126472U publication Critical patent/CN202126472U/en

Links

Abstract

Provided is a leakage current online monitoring device for a zinc oxide arrester based on wireless synchronous techniques. A CC2430 and a local procedure calls (LPC) 2378 form a central node of a wireless star network. The central node can finish sending synchronous sampling signals, receive voltage and current data acquired by child nodes, analyze the data and upload the data to a remote monitoring center. The CC2430 is mainly used for sending the wireless synchronous sampling signals and receiving sampling data of the child nodes. Network chilled nodes with CC2430s serving as cores can receive the synchronous sampling signals sent by the central node, finish sampling leakage current of the zinc oxide arrester and reference voltage of a potential transformer (PT), and upload the sampling data according to addresses. The leakage current online monitoring device for the zinc oxide arrester based on the wireless synchronous techniques utilizes a wireless synchronous methods, acquires total leakage current from the zinc oxide arrester and voltage reference signals from the PT side, and obtains fundamental wave value and phase value of the current and fundamental wave value and phase value of the voltage by means of fast fourier transform (FFT) analysis. Accordingly, resistive current in the leakage current can be obtained, and the deterioration degree of the zinc oxide arrester can be judged.

Description

Leakage Current of Zinc-oxide Lightning Arresters on-Line Monitor Device based on the wireless synchronization technology

Technical field

The utility model relates to a kind of leakage current of an arrester on-Line Monitor Device, relates in particular to a kind of Leakage Current of Zinc-oxide Lightning Arresters on-Line Monitor Device based on the wireless synchronization technology.

Background technology

In high-voltage fence, Zinc-Oxide Arrester is a kind of protection equipment that the protection electric equipment is avoided the superpotential infringement.But because zinc oxide valve plate makes moist, itself is aging, and the filthy influence of environment moves under the exception condition etc., all can reduce the safe and reliable operation of Zinc-Oxide Arrester, even explosion caused accident, causes large-area power-cuts, the ability that forfeiture protection electric equipment is not damaged.Therefore, on-line monitoring Zinc-Oxide Arrester situation can effectively avoid fault to take place, and helps the safe operation of power equipment.

At present, people take regularly Zinc-Oxide Arrester to be had a power failure to detect usually, perhaps seal in leakage current indication and calculating instrument in the Zinc-Oxide Arrester ground loop at manual patrol, and the record current reading is judged the lightning arrester operation conditions, degree of aging.Intensification along with the Zinc-Oxide Arrester degree of aging; Current in resistance property in the leakage current obviously increases; And the content of current in resistance property in total current only accounts for about 10%-20%, and is a lot of even the current in resistance property in the leakage current increases, and can not in the leakage current monitor, significantly show.

The utility model content

The utility model purpose is the above-mentioned shortcoming that overcomes prior art; A kind of Leakage Current of Zinc-oxide Lightning Arresters on-Line Monitor Device based on the wireless synchronization technology is provided; It has avoided conventional artificial inspection, on-the-spot cable laying, has realized synchronized sampling, the utilization fft analysis; Draw resistive fundamental current, significantly embodied the variation of current in resistance property.

In order to solve above technical matters, the Leakage Current of Zinc-oxide Lightning Arresters on-Line Monitor Device based on the wireless synchronization technology that the utility model provides is characterized in that comprising:

Distant place data center---write down each monitored Leakage Current of Zinc-oxide Lightning Arresters data, comprise total current, current in resistance property, and zinc paste ageing state;

Centroid---constitute by LPC2378 chip and CC2430 chip, its on the one hand and the communication of distant place data center, another side to Leakage Current measure child node, PT voltage measurement child node is sent the synchronized data sampling signal, and receives the sampled data that it returns;

The leakage current measurement child node---be Leakage Current of Zinc-oxide Lightning Arresters on-line monitoring unit, the synchronous sampling signal according to Centroid sends carries out synchronized sampling to the lightning arrester Leakage Current, and is sent to Centroid through wireless network;

PT voltage measurement child node---the synchronous sampling signal according to Centroid sends carries out synchronized sampling to PT side voltage, and is sent to Centroid through wireless network.

The utility model design proposal; The Centroid of forming wireless Star Network with TI wireless singlechip CC2430 and the ARM of NXP company chip LPC2378; Centroid is accomplished the transmission of synchronous sampling signal, receives the voltage that collects from child node, current data; The line data analysis of going forward side by side, and with data upload to remote monitoring center.At this, the CC2430 chip mainly serves as the transmission of wireless synchronization sampled signal and receives the effect of child node sampled data.With the CC2430 chip is the network child node of core, is receiving the synchronous sampling signal that Centroid sends, and accomplishes Leakage Current of Zinc-oxide Lightning Arresters, and the PT reference voltage is sampled, and uploads sampled data by the address.The present invention utilizes the wireless synchronization method; Obtain leakage full current from Zinc-Oxide Arrester, get voltage reference signal from the PT side-draw, through fft analysis; Draw the first-harmonic value and the phase value of electric current; Voltage fundamental value and phase value, thus draw the current in resistance property size in the leakage current, can judge the degradation of Zinc-Oxide Arrester thus.

The utility model possesses following advantage based on the Leakage Current of Zinc-oxide Lightning Arresters on-Line Monitor Device of wireless synchronization technology:

1. the utilization of wireless synchronization method can extract current in resistance property accurately from leakage current;

2. employing solar electric power supply system, wireless data transmission has been avoided cable laying;

3. the teletransmission of data, dynamic prison shows the state of Zinc-Oxide Arrester, has improved the real-time of monitoring;

4. easy for installation, expense is low.

The utility model ingenious conception, topological structure is reasonable, and is easy to use, effective.Be well received in the field of business, have good market outlook.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is this Leakage Current of Zinc-oxide Lightning Arresters on-Line Monitor Device block diagram based on the wireless synchronization technology.

Embodiment

As shown in Figure 1, the Leakage Current of Zinc-oxide Lightning Arresters on-Line Monitor Device based on the wireless synchronization technology of present embodiment comprises:

Distant place data center---write down each monitored Leakage Current of Zinc-oxide Lightning Arresters data, comprise total current, current in resistance property, and zinc paste ageing state;

Centroid---constitute by LPC2378 chip and CC2430 chip, its on the one hand and the communication of distant place data center, another side to Leakage Current measure child node, PT voltage measurement child node is sent the synchronized data sampling signal, and receives the sampled data that it returns;

Leakage Current is measured 3 of child nodes---be Leakage Current of Zinc-oxide Lightning Arresters on-line monitoring unit; After receiving the sample command that Centroid sends, immediately the lightning arrester Leakage Current is carried out synchronized sampling, sampling; 32 points of a cycle equal interval sampling and storage; That waits for network center's node transmission uploads data command by the address, and each child node is passed through CC2591 power amplification chip with data successively, is sent to network center's node.

PT voltage measurement child node---the synchronous sampling signal according to Centroid sends carries out synchronized sampling to PT side voltage, and is sent to Centroid through wireless network.

The related wireless network of the utility model is the ZigBee wireless network, and CC2430 chip, CC2591 power amplification chip all are the chips of design ZigB wireless network.

Present embodiment adopts the wireless synchronization sampling based on the Leakage Current of Zinc-oxide Lightning Arresters on-Line Monitor Device of wireless synchronization technology, and network is formed from node by 1 main 3, adopts point-to-point communication; Obtain voltage at synchronization, current data, voltage signal is obtained by PT, and leakage full current is through 100R resistance; Convert voltage signal into, voltage, electric current all pass through identical step low-pass does not have source resistance-capacitance filter, and cutoff frequency is 313Hz; The input of employing difference, cycle equal interval sampling 32 points are to PT voltage; The leakage full current data are carried out fft analysis, draw both phase angle differences and exist, the resistive fundamental current amplitude.(explaining that the value in the table all is the value after quantizing)

The utility model device utilizes solar poweredly, through wireless data transmission technology, need not to lay electric power, telecommunication cable, and is easy for installation, even the wireless sensing node fault does not influence system safety operation yet.The utility model device is mainly used in the monitoring of Zinc-Oxide Arrester in the transformer station.

Except that the foregoing description, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims (2)

1. based on the Leakage Current of Zinc-oxide Lightning Arresters on-Line Monitor Device of wireless synchronization technology, it is characterized in that comprising:
Distant place data center, Centroid, leakage current measurement child node, PT voltage measurement child node; Said Centroid is made up of LPC2378 chip and CC2430 chip; Said Centroid and the communication of distant place data center; The sampled data of leakage current measurement child node, PT voltage measurement child node is sent to Centroid through wireless network, and said leakage current measurement child node is Leakage Current of Zinc-oxide Lightning Arresters on-line monitoring unit.
2. the Leakage Current of Zinc-oxide Lightning Arresters on-Line Monitor Device based on the wireless synchronization technology according to claim 1, it is characterized in that: described wireless network is the ZigBee wireless network.
CN2011201819017U 2011-05-31 2011-05-31 Leakage current online monitoring device for zinc oxide arrester based on wireless synchronous techniques CN202126472U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201819017U CN202126472U (en) 2011-05-31 2011-05-31 Leakage current online monitoring device for zinc oxide arrester based on wireless synchronous techniques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201819017U CN202126472U (en) 2011-05-31 2011-05-31 Leakage current online monitoring device for zinc oxide arrester based on wireless synchronous techniques

Publications (1)

Publication Number Publication Date
CN202126472U true CN202126472U (en) 2012-01-25

Family

ID=45489538

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011201819017U CN202126472U (en) 2011-05-31 2011-05-31 Leakage current online monitoring device for zinc oxide arrester based on wireless synchronous techniques

Country Status (1)

Country Link
CN (1) CN202126472U (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103777053A (en) * 2012-10-24 2014-05-07 江苏省电力公司连云港供电公司 Method for realizing synchronous sampling of voltage and current by utilizing wireless communication mode
CN105044524A (en) * 2015-08-10 2015-11-11 许继集团有限公司 Lightning arrester monitoring method applicable to intelligent transformer station and system
CN105136201A (en) * 2015-08-26 2015-12-09 芜湖市凯鑫避雷器有限责任公司 Falling type lightning arrester detection system
CN105137269A (en) * 2015-09-24 2015-12-09 国家电网公司 Distribution type wireless synchronous zinc oxide arrester electrification detection device and method
CN105182044A (en) * 2015-09-23 2015-12-23 厦门红相电力设备股份有限公司 Ultrahigh voltage DC arrester state detection device with Hall sensor acting as framework
CN105182043A (en) * 2015-09-23 2015-12-23 厦门红相电力设备股份有限公司 Ultrahigh voltage DC arrester leakage current detection device through noncontact sensor
CN105182045A (en) * 2015-09-23 2015-12-23 厦门红相电力设备股份有限公司 Big data platform with ultrahigh voltage DC arrester state detection data acting as framework
CN105182163A (en) * 2015-09-23 2015-12-23 厦门红相电力设备股份有限公司 Ultrahigh voltage DC arrester leakage current online detection system based on cloud technology
CN105548821A (en) * 2015-11-16 2016-05-04 国家电网公司 Lightning arrester live detection method
CN106324321A (en) * 2016-08-23 2017-01-11 苏州亿科斯通电气有限公司 Monitoring method and monitoring device for resistive current of zinc oxide lightning arrester
CN107505531A (en) * 2017-08-10 2017-12-22 中国科学院上海高等研究院 A kind of earth detector, insulator earth detector, system and method

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103777053A (en) * 2012-10-24 2014-05-07 江苏省电力公司连云港供电公司 Method for realizing synchronous sampling of voltage and current by utilizing wireless communication mode
CN105044524A (en) * 2015-08-10 2015-11-11 许继集团有限公司 Lightning arrester monitoring method applicable to intelligent transformer station and system
CN105136201A (en) * 2015-08-26 2015-12-09 芜湖市凯鑫避雷器有限责任公司 Falling type lightning arrester detection system
CN105182043B (en) * 2015-09-23 2018-05-11 红相股份有限公司 Detection device with non-contact sensor to UHVDC Arrester leakage current
CN105182044A (en) * 2015-09-23 2015-12-23 厦门红相电力设备股份有限公司 Ultrahigh voltage DC arrester state detection device with Hall sensor acting as framework
CN105182043A (en) * 2015-09-23 2015-12-23 厦门红相电力设备股份有限公司 Ultrahigh voltage DC arrester leakage current detection device through noncontact sensor
CN105182163A (en) * 2015-09-23 2015-12-23 厦门红相电力设备股份有限公司 Ultrahigh voltage DC arrester leakage current online detection system based on cloud technology
CN105182045A (en) * 2015-09-23 2015-12-23 厦门红相电力设备股份有限公司 Big data platform with ultrahigh voltage DC arrester state detection data acting as framework
CN105182045B (en) * 2015-09-23 2018-05-11 红相股份有限公司 Big data platform using UHVDC Arrester state-detection data as framework
CN105137269A (en) * 2015-09-24 2015-12-09 国家电网公司 Distribution type wireless synchronous zinc oxide arrester electrification detection device and method
CN105548821A (en) * 2015-11-16 2016-05-04 国家电网公司 Lightning arrester live detection method
CN106324321A (en) * 2016-08-23 2017-01-11 苏州亿科斯通电气有限公司 Monitoring method and monitoring device for resistive current of zinc oxide lightning arrester
CN107505531A (en) * 2017-08-10 2017-12-22 中国科学院上海高等研究院 A kind of earth detector, insulator earth detector, system and method

Similar Documents

Publication Publication Date Title
CN102937675B (en) The method of work of Real-time Electrical Distribution Network Data collection and fault location system
CN101813740B (en) System and method for detecting high voltage transmission line faults
CN102129009B (en) Method for measuring positive sequence parameters of ultra-high voltage transmission line based on double end measuring information
BRPI1004893A2 (en) phase identification system and method for identifying phase information
CN104897983B (en) A kind of grounding net of transformer substation impacts characteristics of the dispersed flow test device
CN102928741A (en) Satellite time synchronization based electric power line fault location system and method
CN104076321B (en) On-line monitoring and evaluating system and method for digital electric energy meter
CN105277857B (en) A kind of bushing shell for transformer of monitoring on-line makes moist the method for defect
CN104865489B (en) Overhead transmission line fault location monitoring system and method
CN104297639B (en) Fault traveling wave collecting device and system for medium voltage distribution network
CN101738565B (en) Adaptive fault indicator
CN102298107A (en) Portable ultrasonic wave and cloud detection apparatus for partial discharge
CN103091602B (en) Power line carrier wave online fault detection device
CN103389441A (en) Fault detection and positioning system for power line
CN103675623B (en) GIS partial discharge detection method and system under a kind of surge voltage
CN102435871A (en) On-line monitoring system for data collection of electric arresters based on GPS (Global Positioning System) synchronization
CN202956428U (en) Residual voltage testing device
CN104267374A (en) Online detecting and state assessing system of metering device
CN102435915B (en) Power cable fault traveling wave synchronization range finding method
CN104267373A (en) Gateway meter assessment device
CN203275562U (en) A lightning arrester online monitoring apparatus based on a RF wireless network
CN204495898U (en) A kind of transformer superpotential on-line monitoring system
CN203084097U (en) On-line zinc oxide lightning arrester state monitoring device
WO2015117304A1 (en) System for online monitoring of zinc oxide arrester and method thereof
CN204228778U (en) A kind of can the electric energy meter of on-line measurement residual current

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: JIANGSU ELECTRIC POWER COMPANY STATE GRID CORPORAT

Free format text: FORMER OWNER: NANJING DAONA NENG TECHNOLOGY CO., LTD.

Effective date: 20121113

TR01 Transfer of patent right

Effective date of registration: 20121113

Address after: 222004 Lianyungang City, Jiangsu province Sinpo District Road No. 13

Patentee after: Lianyungang Power Supply Company of Jiangsu Electric Power Company

Patentee after: Jiangsu Electric Power Company

Patentee after: State Grid Corporation of China

Patentee after: Nanjing Daonaneng Technology Co.,Ltd.

Address before: 222004 Lianyungang City, Jiangsu province Sinpo District Road No. 13

Patentee before: Lianyungang Power Supply Company of Jiangsu Electric Power Company

Patentee before: Nanjing Daonaneng Technology Co.,Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120125

Termination date: 20120531

C17 Cessation of patent right