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CN106291279A - A system and method for eliminating external interference based on an omnidirectional UHF noise sensor - Google Patents

A system and method for eliminating external interference based on an omnidirectional UHF noise sensor Download PDF

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Publication number
CN106291279A
CN106291279A CN201610629719.0A CN201610629719A CN106291279A CN 106291279 A CN106291279 A CN 106291279A CN 201610629719 A CN201610629719 A CN 201610629719A CN 106291279 A CN106291279 A CN 106291279A
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China
Prior art keywords
signal
gis
noise sensor
sensor
external
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Pending
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CN201610629719.0A
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Chinese (zh)
Inventor
李金忠
王健
王健一
吴超
唐志国
张海波
张书琦
高飞
程涣超
汪可
刘雪丽
孙建涛
赵志刚
汤浩
贾鹏飞
郭锐
赵晓宇
仇宇舟
关健昕
遇心如
申泽军
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State Grid Electric Power Research Institute Of Sepc
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
North China Electric Power University
Original Assignee
State Grid Electric Power Research Institute Of Sepc
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
North China Electric Power University
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Application filed by State Grid Electric Power Research Institute Of Sepc, State Grid Corp of China SGCC, China Electric Power Research Institute Co Ltd CEPRI, North China Electric Power University filed Critical State Grid Electric Power Research Institute Of Sepc
Priority to CN201610629719.0A priority Critical patent/CN106291279A/en
Publication of CN106291279A publication Critical patent/CN106291279A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

The invention provides a system and a method for eliminating external interference based on an omnidirectional UHF noise sensor. The system comprises an omnidirectional UHF noise sensor, a signal processing module and a signal processing module, wherein the omnidirectional UHF noise sensor is used for receiving GIS external signals in all directions; the signal sensor is used for receiving a partial discharge signal of the GIS internal insulation defect; the local discharge acquisition unit is used for amplifying and converting a local discharge signal and a GIS external signal; and the upper computer judges the GIS external signal attribute according to the judgment principle and processes the GIS external signal attribute to eliminate the interference signal when the GIS external signal attribute is the interference signal. The omnidirectional UHF noise sensor comprises: the conical spiral antenna board unit consists of a conical spiral antenna and a bottom board and is used for receiving GIS external signals in all directions; the tooling unit consists of an epoxy antenna housing and a bottom packaging part and is used for packaging the conical spiral antenna plate unit; and the N-type connector is positioned in the center of the bottom of the tool unit and is used for transmitting the received GIS external signals to the partial discharge acquisition unit.

Description

A kind of system and method eliminating external disturbance based on omnidirectional's UHF noise transducer
Technical field
The present invention relates to partial-discharge ultrahigh-frequency and detect jamproof technical field, and more particularly, to a kind of base The system and method for external disturbance is eliminated in omnidirectional's superfrequency UHF (Ultra High Frequency) noise transducer.
Background technology
Cubicle Gas-Insulated Switchgear (GIS, Gas Insulated Switchgear) is the weight of grid equipment Want ingredient.GIS quantity is big, and is widely used in urban distribution network.GIS compact conformation, and to internal small insulation Defect is very sensitive, is therefore easily caused the major accident of insulation breakdown.Generally, the conventional tour for GIS cannot be effective The operation conditions of solution equipment, this is because the totally-enclosed property of GIS.The site examining and repairing environmental requirement of GIS is high, and dismounting workload is big, Power off time length and overhaul somewhat expensive.The non-maintaining operation of GIS is limited to about 15 years in year, the time the biggest portion broken down Office is in time just putting into operation or when closing on the life-span.China has a large amount of new GIS to put into operation every year, has some GIS to reach the most successively The non-maintaining operation time limit to regulation.How to ensure the safe operation of these equipment, avoid unnecessary interruption maintenance simultaneously, joint Saving maintenance expense, this is the major issue faced during GIS runs.
The popularization and application of UHF shelf depreciation online measuring technique are for the health status of anticipation GIS, it is to avoid electrical network is great to be set The generation of standby accident, and ensure the safe operation of GIS, improve overhaul of the equipments and maintenance efficiency has positive meaning and good Economic results in society.Additionally, UHF shelf depreciation online measuring technique is also widely used for power transformer, electric power electricity at present Partial discharge detection/the monitoring of the high voltage electric equipments such as cable.
But, the energy that the omnidirectional of signal is received by the detection device used in existing shelf depreciation UHF online measuring technique Power is more weak, it is impossible to realizes the effective of the signal to on-the-spot all directions and receives, the most at the scene cannot be effective during actual measurement Suppression external interference signals.
In summary, the receiving directivity of the detection device used in shelf depreciation UHF online measuring technique and detection frequency Band scope is most important to this anti-interference mode, only uses the detection device of excellent performance and carries out and signal transducer Reasonable disposition, just can give full play of the effect of this anti-interference method.
Summary of the invention
In order to solve the problems referred to above, the present invention propose a kind of based on what omnidirectional UHF noise transducer eliminated external disturbance be System and method.Described system includes:
Omnidirectional's UHF noise transducer, it receives GIS external signal for omnirange；
Signal transducer, it is for receiving the local discharge signal of GIS built-in electrical insulation defect；
Shelf depreciation collecting unit, it is used for amplifying and change local discharge signal and GIS external signal；And
Host computer, it is according to decision principle judgement GIS external signal attribute, and when GIS external signal is for interference signal Carry out processing to eliminate interference signal.
Preferably, described decision principle includes:
If signal transducer is Tong Bu with the signal that noise transducer receives and the signal of signal transducer is more than or equal to making an uproar The signal of sonic transducer, mobile noise transducer, away from equipment under test, if the signal of noise transducer diminishes, then judges that this believes Number it is equipment under test internal discharge signal, if the signal of noise transducer becomes size that is big and that exceed signal transducer signal, Then it is judged to external interference signals；And
If signal transducer is Tong Bu with the signal that noise transducer receives and the signal of signal transducer passes less than noise The signal of sensor, mobile noise transducer is away from equipment under test, if the signal of noise transducer diminishes and is less than sensing The signal of device, then judge that this signal, as equipment under test internal discharge signal, if the signal of noise transducer becomes big, is judged to External interference signals.
According to an aspect of the present invention, described omnidirectional UHF noise transducer includes:
Conical spiral antenna Slab element, it is made up of conical spiral antenna and base plate, receives the outside letter of GIS for omnirange Number；
Frock unit, it is made up of epoxy antenna house and Bottom packaging part, is used for encapsulating described conical spiral antenna list Unit；And
N Connector, it is positioned at frock unit bottom center, by being connected with conical spiral antenna Slab element, will receive GIS external signal transmit to shelf depreciation collecting unit.
Preferably, the detection frequency band range of described omnidirectional UHF noise transducer is 300MHz to 2GHz, standing-wave ratio is less than It is-30dB to 6dB in 3 and antenna gain.
Preferably, the frock unit in omnidirectional UHF noise transducer has waterproof and dustproof performance.
According to a further aspect in the invention, described method based on omnidirectional's UHF noise transducer elimination external disturbance includes:
It is arranged on inside GIS by embedded for signal transducer, for receiving the local discharge signal of GIS built-in electrical insulation defect；
Being placed around omnidirectional's UHF noise transducer at each signal transducer, described omnidirectional UHF noise transducer is used In receiving GIS external signal；
Shelf depreciation collecting unit is used to amplify and change local discharge signal and GIS external signal near GIS；And
Host computer judges GIS external signal attribute according to decision principle, and carries out when GIS external signal is for interference signal Process to eliminate interference signal.
Preferably, described decision principle is as follows:
If signal transducer is Tong Bu with the signal that noise transducer receives and the signal of signal transducer is more than or equal to making an uproar The signal of sonic transducer, mobile noise transducer, away from equipment under test, if the signal of noise transducer diminishes, then judges that this believes Number it is equipment under test internal discharge signal, if the signal of noise transducer becomes size that is big and that exceed signal transducer signal, Then it is judged to external interference signals；And
If signal transducer is Tong Bu with the signal that noise transducer receives and the signal of signal transducer passes less than noise The signal of sensor, mobile noise transducer is away from equipment under test, if the signal of noise transducer diminishes and is less than sensing The signal of device, then judge that this signal, as equipment under test internal discharge signal, if the signal of noise transducer becomes big, is judged to External interference signals.
Accompanying drawing explanation
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by.
Fig. 1 shows the system eliminating external disturbance based on omnidirectional's UHF noise transducer according to embodiment of the present invention In-site installation schematic diagram；
Fig. 2 shows the object construction figure of the omnidirectional's UHF noise transducer according to embodiment of the present invention
Fig. 3 shows the component structural figure of the omnidirectional's UHF noise transducer according to embodiment of the present invention.
Fig. 4 shows another component structural figure of the omnidirectional's UHF noise transducer according to embodiment of the present invention.
Fig. 5 shows the directional diagram at 500MHz of the omnidirectional's UHF noise transducer according to embodiment of the present invention；
Fig. 6 shows the directional diagram at 750MHz of the omnidirectional's UHF noise transducer according to embodiment of the present invention；
Fig. 7 shows the directional diagram at 1GHz of the omnidirectional's UHF noise transducer according to embodiment of the present invention；
Fig. 8 shows the directional diagram at 1.5GHz of the omnidirectional's UHF noise transducer according to embodiment of the present invention；
Fig. 9 shows the directional diagram at 2GHz of the omnidirectional's UHF noise transducer according to embodiment of the present invention；
Figure 10 shows that the omnidirectional's UHF noise transducer according to embodiment of the present invention is at 300MHz-2GHz frequency band range Interior voltage standing wave ratio test result figure；
Figure 11 shows the antenna gain table of the omnidirectional's UHF noise transducer according to embodiment of the present invention；
Figure 12 shows the method eliminating external disturbance based on omnidirectional's UHF noise transducer according to embodiment of the present invention Flow chart.
Detailed description of the invention
With reference now to accompanying drawing, introduce the illustrative embodiments of the present invention.The present invention can come real by many different forms Execute, and be not limited to embodiment described herein, it is provided that these embodiments are at large and fully disclose the present invention, And the scope of the present invention is fully passed on to person of ordinary skill in the field.For representing exemplary enforcement in the accompanying drawings Term in mode is not limitation of the invention.In the accompanying drawings, identical cells/elements uses identical reference.
Except as otherwise noted, person of ordinary skill in the field is had by term used herein (including scientific and technical terminology) Common understand implication.Further it will be understood that the term limited with normally used dictionary, it should it is understood to and it The linguistic context of association area has consistent implication, and is not construed as Utopian or the most formal meaning.
Fig. 1 is showing of the system based on omnidirectional's UHF noise transducer elimination external disturbance according to embodiment of the present invention Field scheme of installation.As it is shown in figure 1, the signal in site environment is examined by system 100 based on omnidirectional's UHF noise transducer Survey, to eliminate external interference signals.According to the preferred embodiment of the present invention, system 100 includes omnidirectional's UHF noise transducer 101, signal transducer 102, shelf depreciation collecting unit 103 and host computer 104.
Preferably, omnidirectional's UHF noise transducer 101, receive GIS external signal for omnirange.
Preferably, signal transducer 102 is for receiving the local discharge signal of GIS built-in electrical insulation defect.
Preferably, shelf depreciation collecting unit 103 is used for amplifying and change local discharge signal and GIS external signal.
Preferably, host computer 104 judges GIS external signal attribute according to decision principle.According to preferred implementation, described Decision principle includes: if Tong Bu with the signal that noise transducer receives and signal transducer the signal of signal transducer is more than In the signal of noise transducer, mobile noise transducer, away from equipment under test, if the signal of noise transducer diminishes, then judges This signal is equipment under test internal discharge signal, if the signal of noise transducer becomes big and exceedes the big of signal transducer signal Little, then it is judged to external interference signals；And if signal transducer is Tong Bu with the signal that noise transducer receives and signal passes The signal of sensor is less than the signal of noise transducer, and mobile noise transducer is away from equipment under test, if the letter of noise transducer Number diminish and less than the signal of signal transducer, then judge this signal as equipment under test internal discharge signal, if noise sensing The signal of device becomes and is then judged to external interference signals greatly.When according to decision principle, host computer 104 determines that GIS external signal is for interference During signal, utilize the software of host computer 104 to process, eliminate interference signal.
Fig. 2 is the object construction figure of the omnidirectional's UHF noise transducer 101 according to embodiment of the present invention.As in figure 2 it is shown, Described omnidirectional UHF noise transducer 101 is from the appearance cone-type spiral structure, it include conical spiral antenna Slab element 201, Frock unit 202 and N Connector 203.Fig. 3 and Fig. 4 is the omnidirectional's UHF noise transducer 101 according to embodiment of the present invention Component structural figure.Understanding in conjunction with Fig. 2, Fig. 3 and Fig. 4, the structure of described omnidirectional UHF noise transducer is as follows.
Preferably, conical spiral antenna Slab element 201 is made up of, for omnirange conical spiral antenna 211 and base plate 212 Receive GIS external signal.
Preferably, frock unit 202 is made up of epoxy antenna house 221 and Bottom packaging part 222, is used for encapsulating described cone Shape helical antenna elements 201.Owing to frock unit 202 is enclosed construction, therefore there is good waterproof and dustproof performance.
Preferably, N Connector, its be positioned at frock unit bottom center, by with conical spiral antenna Slab element 201 phase Even, the GIS external signal received is transmitted to shelf depreciation collecting unit 103.
Fig. 5-9 be omnidirectional's UHF noise transducer according to embodiment of the present invention 500MHz, 750MHz, 1GHz, The directional diagram of these 5 frequencies of 1.5GHz and 2GHz.As shown in figures 5-9, described omnidirectional UHF noise transducer preferably achieves entirely Direction receives the function of external signal.
Figure 10 is the electricity in 300MHz-2GHz frequency band range of the omnidirectional's UHF noise transducer according to embodiment of the present invention Pressure standing-wave ratio test result figure.As shown in Figure 10, it is preferable that the standing-wave ratio of omnidirectional's UHF noise sensing is less than or equal to 3.
Figure 11 is the antenna gain table of the omnidirectional's UHF noise transducer according to embodiment of the present invention.As shown in figure 11, excellent Selection of land, the antenna gain of omnidirectional's UHF noise transducer is-30dB to 6dB.
Figure 12 is the method 1200 eliminating external disturbance based on omnidirectional's UHF noise transducer according to embodiment of the present invention Flow chart.
As shown in figure 12, described method 1200 is from the beginning of step 1201.Preferably, in step 1201, by omnidirectional's UHF noise Sensor 101 and signal transducer 102 are installed according to the configuration of to, will signal transducer 102 is embedded is arranged on GIS, for receiving the local discharge signal of GIS built-in electrical insulation defect, is then placed around one at each signal transducer 102 Omnidirectional's UHF noise transducer 101, is used for receiving GIS external signal.
Preferably, in step 1202, gather omnidirectional UHF make an uproar by being placed on the shelf depreciation collecting unit 103 near GIS Sonic transducer 101 and the GIS external signal of signal transducer 102 synchronous driving and local discharge signal, and by above-mentioned signal It is amplified and changes.
Preferably, in step 1203, host computer 104 judges GIS external signal attribute according to decision principle.
Described decision principle includes: if signal transducer is Tong Bu with the signal that noise transducer receives and signal transducer Signal more than or equal to the signal of noise transducer, mobile noise transducer is away from equipment under test, if the letter of noise transducer Number diminish, then judge this signal as equipment under test internal discharge signal, if the signal of noise transducer becomes big and exceedes signal The size of sensor signal, then be judged to external interference signals；And if the letter that signal transducer receives with noise transducer Number synchronize and the signal of signal transducer be less than the signal of noise transducer, mobile noise transducer away from equipment under test, if The signal of noise transducer diminishes and is less than the signal of signal transducer, then judge that this signal is believed as equipment under test internal discharge Number, if the signal of noise transducer becomes big, it is judged to external interference signals.
If judging that GIS external signal, as external interference signals, skips to step 1204 according to decision principle.If it is former according to judging Then judge that GIS external signal is not external interference signals, skips to step 1202.
Preferably, the software in step 1204, host computer 104 carries out processing to eliminate interference signal.
Normally, all terms used in the claims are all solved in the usual implication of technical field according to them Release, unless additionally defined clearly wherein.All of reference " one/described/be somebody's turn to do [device, assembly etc.] " is all opened ground It is construed at least one example in described device, assembly etc., unless otherwise expressly specified.Any method disclosed herein Step all need not be run, unless explicitly stated otherwise with disclosed order accurately.

Claims (10)

1.一种基于全向UHF噪声传感器消除外部干扰的系统，所述系统包括：1. A system based on omnidirectional UHF noise sensor to eliminate external interference, said system comprising: 全向UHF噪声传感器，其用于全方向接收GIS外部信号；Omnidirectional UHF noise sensor, which is used to receive GIS external signals in all directions; 信号传感器，其用于接收GIS内部绝缘缺陷的局部放电信号；A signal sensor, which is used to receive the partial discharge signal of the internal insulation defect of the GIS; 局部放电采集单元，其用于放大并转换局部放电信号和GIS外部信号；以及a partial discharge acquisition unit, which is used to amplify and convert the partial discharge signal and the GIS external signal; and 上位机，其根据判定原则判定GIS外部信号属性，并在GIS外部信号为干扰信号时进行处理以消除干扰信号。The upper computer judges the attribute of the GIS external signal according to the judgment principle, and processes it to eliminate the interference signal when the GIS external signal is an interference signal. 2.根据权利要求1所述的系统，其中所述判定原则包括：2. The system according to claim 1, wherein said decision principle comprises: 如果信号传感器与噪声传感器接收的信号同步且信号传感器的信号大于等于噪声传感器的信号，移动噪声传感器远离被测设备，如果噪声传感器的信号变小，则判定此信号为被测设备内部放电信号，如果噪声传感器的信号变大且超过信号传感器信号的大小，则判定为外部干扰信号；以及If the signals received by the signal sensor and the noise sensor are synchronized and the signal of the signal sensor is greater than or equal to the signal of the noise sensor, move the noise sensor away from the device under test. If the signal of the noise sensor becomes smaller, it is determined that the signal is an internal discharge signal of the device under test. If the signal of the noise sensor becomes larger and exceeds the magnitude of the signal sensor signal, it is determined as an external interference signal; and 如果信号传感器与噪声传感器接收的信号同步且信号传感器的信号小于噪声传感器的信号，移动噪声传感器远离被测设备，如果噪声传感器的信号变小且小于信号传感器的信号，则判定此信号为被测设备内部放电信号，如果噪声传感器的信号变大则判定为外部干扰信号。If the signal sensor is synchronized with the signal received by the noise sensor and the signal of the signal sensor is smaller than the signal of the noise sensor, move the noise sensor away from the device under test. The internal discharge signal of the equipment, if the signal of the noise sensor becomes larger, it is judged as an external interference signal. 3.根据权利要求1所述的系统，其中，所述全向UHF噪声传感器包括：3. The system of claim 1, wherein the omnidirectional UHF noise sensor comprises: 锥形螺旋天线板单元，其由锥形螺旋天线和底板构成，用于全方向接收GIS外部信号；The conical helical antenna board unit is composed of a conical helical antenna and a bottom plate, and is used to receive GIS external signals in all directions; 工装单元，其由环氧天线罩和底部封装部分构成，用于封装所述锥形螺旋天线单元；以及a tooling unit consisting of an epoxy radome and a bottom encapsulation portion for encapsulating the tapered helical antenna unit; and N型连接器，其位于工装单元底部正中，通过与锥形螺旋天线板单元相连，将接收的GIS外部信号传输至局部放电采集单元。N-type connector, which is located in the center of the bottom of the tooling unit, is connected to the conical spiral antenna plate unit, and transmits the received GIS external signal to the partial discharge collection unit. 4.根据权利要求3所述的系统，其中，所述全向UHF噪声传感器的检测频带范围为300MHz至2GHz、驻波比小于等于3并且天线增益为-30dB至6dB。4. The system according to claim 3, wherein the detection frequency band of the omnidirectional UHF noise sensor ranges from 300MHz to 2GHz, the standing wave ratio is less than or equal to 3, and the antenna gain is -30dB to 6dB. 5.根据权利要求3所述的系统，其中，所述工装单元具有防水和防尘性能。5. The system of claim 3, wherein the tooling unit is waterproof and dustproof. 6.一种基于全向UHF噪声传感器消除外部干扰的方法，所述方法包括：6. A method for eliminating external interference based on an omnidirectional UHF noise sensor, said method comprising: 将信号传感器内嵌安装在GIS内部，用于接收GIS内部绝缘缺陷的局部放电信号；Install the signal sensor embedded in the GIS to receive the partial discharge signal of the internal insulation defect of the GIS; 在每个信号传感器附近放置一个全向UHF噪声传感器，所述全向UHF噪声传感器用于接收GIS外部信号；An omnidirectional UHF noise sensor is placed near each signal sensor, and the omnidirectional UHF noise sensor is used to receive GIS external signals; 在GIS附近使用局部放电采集单元放大并转换局部放电信号和GIS外部信号；以及Amplify and convert PD signals and signals external to the GIS using a PD acquisition unit near the GIS; and 上位机根据判定原则判定GIS外部信号属性，并在GIS外部信号为干扰信号时进行处理以消除干扰信号。The upper computer judges the attribute of GIS external signal according to the judgment principle, and processes it to eliminate the interference signal when the GIS external signal is an interference signal. 7.根据权利要求6所述的方法，其中所述判定原则如下：7. The method according to claim 6, wherein the judgment principle is as follows: 如果信号传感器与噪声传感器接收的信号同步且信号传感器的信号大于等于噪声传感器的信号，移动噪声传感器远离被测设备，如果噪声传感器的信号变小，则判定此信号为被测设备内部放电信号，如果噪声传感器的信号变大且超过信号传感器信号的大小，则判定为外部干扰信号；以及If the signals received by the signal sensor and the noise sensor are synchronized and the signal of the signal sensor is greater than or equal to the signal of the noise sensor, move the noise sensor away from the device under test. If the signal of the noise sensor becomes smaller, it is determined that the signal is an internal discharge signal of the device under test. If the signal of the noise sensor becomes larger and exceeds the magnitude of the signal sensor signal, it is determined as an external interference signal; and 如果信号传感器与噪声传感器接收的信号同步且信号传感器的信号小于噪声传感器的信号，移动噪声传感器远离被测设备，如果噪声传感器的信号变小且小于信号传感器的信号，则判定此信号为被测设备内部放电信号，如果噪声传感器的信号变大则判定为外部干扰信号。If the signal sensor is synchronized with the signal received by the noise sensor and the signal of the signal sensor is smaller than the signal of the noise sensor, move the noise sensor away from the device under test. The internal discharge signal of the equipment, if the signal of the noise sensor becomes larger, it is judged as an external interference signal. 8.根据权利要求6所述的方法，其中，所述全向UHF噪声传感器包括：8. The method of claim 6, wherein the omnidirectional UHF noise sensor comprises: 锥形螺旋天线板单元，其由锥形螺旋天线和底板构成，用于全方向接收GIS外部信号；The conical helical antenna board unit is composed of a conical helical antenna and a bottom plate, and is used to receive GIS external signals in all directions; 工装单元，其由环氧天线罩和底部封装部分构成，用于封装所述锥形螺旋天线单元；以及a tooling unit consisting of an epoxy radome and a bottom encapsulation portion for encapsulating the tapered helical antenna unit; and N型连接器，其位于工装单元底部正中，通过与锥形螺旋天线板单元相连，将接收的GIS外部信号传输至局部放电采集单元。N-type connector, which is located in the center of the bottom of the tooling unit, is connected to the conical spiral antenna plate unit, and transmits the received GIS external signal to the partial discharge collection unit. 9.根据权利要求8所述的方法，其中，所述全向UHF噪声传感器的检测频带范围为300MHz至2GHz、驻波比小于等于3并且天线增益为-30dB至6dB。9. The method according to claim 8, wherein the detection frequency band of the omnidirectional UHF noise sensor ranges from 300MHz to 2GHz, the standing wave ratio is less than or equal to 3, and the antenna gain is -30dB to 6dB. 10.根据权利要求8所述的方法，其中，所述工装单元具有防水和防尘性能。10. The method according to claim 8, wherein the tooling unit is waterproof and dustproof.
CN201610629719.0A 2016-08-03 2016-08-03 A system and method for eliminating external interference based on an omnidirectional UHF noise sensor Pending CN106291279A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107677941A (en) * 2017-09-30 2018-02-09 北京华电智成电气设备有限公司 A kind of high-frequency noise synthesizes synchronous common mode noise-reduction method
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CN107677941A (en) * 2017-09-30 2018-02-09 北京华电智成电气设备有限公司 A kind of high-frequency noise synthesizes synchronous common mode noise-reduction method
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CN108680841A (en) * 2018-06-26 2018-10-19 广西电网有限责任公司电力科学研究院 A kind of Operation Condition of Power Transformers comprehensive monitor system

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Application publication date: 20170104