CN202948092U - Measurement system for transient electromagnetic interference of transformer station - Google Patents

Measurement system for transient electromagnetic interference of transformer station Download PDF

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Publication number
CN202948092U
CN202948092U CN 201220689423 CN201220689423U CN202948092U CN 202948092 U CN202948092 U CN 202948092U CN 201220689423 CN201220689423 CN 201220689423 CN 201220689423 U CN201220689423 U CN 201220689423U CN 202948092 U CN202948092 U CN 202948092U
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CN
China
Prior art keywords
end antenna
transformer station
antenna
electromagnetic interference
rear end
Prior art date
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Active
Application number
CN 201220689423
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Chinese (zh)
Inventor
赵军
张建功
倪园
张业茂
李妮
陈豫朝
周兵
黄锐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Original Assignee
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
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Priority to CN 201220689423 priority Critical patent/CN202948092U/en
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Abstract

The utility model provides a measurement system for the transient electromagnetic interference of a transformer station, which comprises a plurality of electromagnetic interference sensors and an oscilloscope. The signal output end of each electromagnetic interference sensor is connected with the oscilloscope respectively through a shielded wire. The measurement system is characterized by further comprising a front-end modem, a front-end antenna, a rear-end antenna, a rear-end modem and a background controller. The oscilloscope is connected with the front-end antenna through the front-end modem. The background controller is connected with the rear-end antenna through the rear-end modem. The front-end antenna and the rear-end antenna are in wireless connection with each other. The measurement system provided by the utility model has the advantages of strong anti-interference capability, and can be adapted to the harsh electromagnetic environment of a high-voltage switching field at a transformer station. Due to the adoption of the digital signal transmission mode, the defect that the analog signal transmission is vulnerable to the disturbance is avoided. Meanwhile, the wireless communication is realized based on the transmission delay policy, so that the high-frequency disturbance is avoided.

Description

Transient Electromagnetic interferometry system of a kind of transformer station
Technical field
The utility model relates to electric system detection technique field, refers to particularly Transient Electromagnetic interferometry system of a kind of transformer station.
Technical background
Development along with China's intelligent grid, particularly a large amount of construction of intelligent substation, a lot of secondary devices need to be transferred to the high-voltage switch gear field of transformer station, this makes secondary device be in the strong electromagnetic environment, and the possibility that is subject to the Transient Electromagnetic interference such as switching manipulation, short trouble and thunderbolt increases greatly.For the Transient Electromagnetic environment of scientific evaluation transformer station, for transferring with Anti-interference Design of secondary device provides foundation, need the Transient Electromagnetic interference of in-site measurement transformer station.This just requires a kind ofly can adapt to abominable electromagnetic environment, and configuration is succinct, dependable performance, is convenient to installation, wiring and carries, and can guarantee the Transient Electromagnetic interferometry system of transformer station of measuring accuracy.
Yet measuring system commonly used is passed through Optical Fiber Transmission with the simulating signal of electromagnetic interference (EMI) sensor at present, access oscillograph or oscillograph after analog to digital conversion, be that the oscillographic signal of front end is transferred to the controller of rear end by optical fiber transport channel, therefore each signal needs independently optical fiber transport channel and oscillograph or oscillograph, therefore the equipment configuration amount is large, system assembles and wiring are complicated, and the workload of in-site measurement is very large.
The utility model content
The purpose of this utility model is exactly the Transient Electromagnetic interferometry system of transformer station that a kind of simple in structure, dependable performance will be provided, can guarantee measuring accuracy.
For realizing this purpose, the Transient Electromagnetic interferometry system of transformer station that the utility model is designed, comprise oscillograph and a plurality of electromagnetic interference (EMI) sensor, the signal output part of described each electromagnetic interference (EMI) sensor connects oscillograph by shielding line respectively, it is characterized in that: it also comprises front end modulator-demodular unit, front end antenna, rear end antenna, rear end modulator-demodular unit and background controller, wherein, described oscillograph connects the front end antenna by the front end modulator-demodular unit; Described background controller connects rear end antenna, wireless connections between described front end antenna and rear end antenna by the rear end modulator-demodular unit.
In technique scheme, pass through the Bluetooth signal wireless connections between front end antenna and rear end antenna.
In technique scheme, oscillograph also is connected with storer.
The beneficial effects of the utility model are: the strong anti-interference performance of Transient Electromagnetic interferometry system of transformer station can adapt to the abominable electromagnetic environment in transformer station's high-voltage switch gear field.The shortcoming that adopts digital data transmission to avoid analog signal transmission to be subject to harass, wireless telecommunications adopt the time-delay transmission policy also to avoid being subject to the possibility of high frequency harassing and wrecking.
Simultaneously, the reliability of system is strong.Wireless transmission has replaced wire transmission, makes system smaller and more exquisite, is easy to carry and installs, and has also avoided optical fiber repeatedly to use flimsy shortcoming.
Description of drawings
Fig. 1 is structured flowchart of the present utility model;
Wherein, 1-electromagnetic interference (EMI) sensor, 2-shielding line, 3-oscillograph, 4-front end modulator-demodular unit, 5-front end antenna, 6-rear end antenna, 7-rear end modulator-demodular unit, 8-background controller, 9-storer.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
Transient Electromagnetic interferometry system of transformer station in figure shown in 1, comprise oscillograph 3 and a plurality of electromagnetic interference (EMI) sensor 1, the signal output part of each electromagnetic interference (EMI) sensor 1 connects oscillograph 3 by shielding line 2 respectively, it also comprises front end modulator-demodular unit 4, front end antenna 5, rear end antenna 6, rear end modulator-demodular unit 7 and background controller 8, wherein, described oscillograph 3 connects front end antenna 5 by front end modulator-demodular unit 4; Background controller 8 connects rear end antenna 6, wireless connections between front end antenna 5 and rear end antenna 6 by rear end modulator-demodular unit 7.Due to the abominable electromagnetic environment in transformer station's high-voltage switch gear field, above-mentioned oscillograph 3 need be placed in shielding cabinet.
In technique scheme, pass through the Bluetooth signal wireless connections between front end antenna 5 and rear end antenna 6.
In technique scheme, oscillograph 3 also is connected with storer 9.
In technique scheme, electromagnetic interference (EMI) sensor 1, shielding line 2, oscillograph 3 and storer 9 consist of the front-end detection unit, and this front-end detection unit is positioned at the high-voltage switch gear field of transformer station, is responsible for completing collection, digitizing and the storage of electromagnetic interference signal.
In technique scheme, front end modulator-demodular unit 4, front end antenna 5, rear end antenna 6 and rear end modulator-demodular unit 7 consist of wireless transmission unit, this wireless transmission unit adopts the Radio Transmission Technology based on bluetooth, realize the two-way signaling transmission on front end and backstage, by the employing transmission policy of delaying time, avoided the Transient Electromagnetic of switch yard to disturb simultaneously.
In technique scheme, background controller 8 is positioned in screened room or test carriage, is responsible for completing reception and the processing of Long-distance Control and the electromagnetic interference (EMI) digital signal of oscillograph 3.
In the utility model when work: the signal data of front-end detection unit can transfer to background controller 8, for preserving and Treatment Analysis, background controller 8 also can be controlled the operation of oscillograph 3, comprises triggering level, trigger delay being set or triggering in advance and the parameter such as sample frequency.
The content that this instructions is not described in detail belongs to the known prior art of this area professional and technical personnel.

Claims (3)

1. Transient Electromagnetic interferometry system of transformer station, comprise oscillograph (3) and a plurality of electromagnetic interference (EMI) sensor (1), the signal output part of described each electromagnetic interference (EMI) sensor (1) connects oscillograph (3) by shielding line (2) respectively, it is characterized in that: it also comprises front end modulator-demodular unit (4), front end antenna (5), rear end antenna (6), rear end modulator-demodular unit (7) and background controller (8), wherein, described oscillograph (3) connects front end antenna (5) by front end modulator-demodular unit (4); Described background controller (8) connects rear end antenna (6), wireless connections between described front end antenna (5) and rear end antenna (6) by rear end modulator-demodular unit (7).
2. Transient Electromagnetic interferometry system of transformer station according to claim 1, is characterized in that: pass through the Bluetooth signal wireless connections between described front end antenna (5) and rear end antenna (6).
3. Transient Electromagnetic interferometry system of transformer station according to claim 1, it is characterized in that: described oscillograph (3) also is connected with storer (9).
CN 201220689423 2012-12-12 2012-12-12 Measurement system for transient electromagnetic interference of transformer station Active CN202948092U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220689423 CN202948092U (en) 2012-12-12 2012-12-12 Measurement system for transient electromagnetic interference of transformer station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220689423 CN202948092U (en) 2012-12-12 2012-12-12 Measurement system for transient electromagnetic interference of transformer station

Publications (1)

Publication Number Publication Date
CN202948092U true CN202948092U (en) 2013-05-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220689423 Active CN202948092U (en) 2012-12-12 2012-12-12 Measurement system for transient electromagnetic interference of transformer station

Country Status (1)

Country Link
CN (1) CN202948092U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104391193A (en) * 2014-11-12 2015-03-04 国家电网公司 Simulative testing method for electromagnetic disturbance of intelligent components of gas insulated substation
CN108548978A (en) * 2018-06-14 2018-09-18 中车唐山机车车辆有限公司 Train electromagnetic interference monitors system and train electromagnetic interference method for obtaining path
CN109406886A (en) * 2018-11-27 2019-03-01 中国电力科学研究院有限公司 One kind being used for printed circuit board transient state suppression common mode electromagnetic interference test method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104391193A (en) * 2014-11-12 2015-03-04 国家电网公司 Simulative testing method for electromagnetic disturbance of intelligent components of gas insulated substation
CN108548978A (en) * 2018-06-14 2018-09-18 中车唐山机车车辆有限公司 Train electromagnetic interference monitors system and train electromagnetic interference method for obtaining path
CN109406886A (en) * 2018-11-27 2019-03-01 中国电力科学研究院有限公司 One kind being used for printed circuit board transient state suppression common mode electromagnetic interference test method
CN109406886B (en) * 2018-11-27 2022-09-20 中国电力科学研究院有限公司 Method for testing transient common mode electromagnetic interference of printed circuit board

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