CN101701992B - Electrified tester of digital wireless type zinc oxide arrester - Google Patents
Electrified tester of digital wireless type zinc oxide arrester Download PDFInfo
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- CN101701992B CN101701992B CN2009101941162A CN200910194116A CN101701992B CN 101701992 B CN101701992 B CN 101701992B CN 2009101941162 A CN2009101941162 A CN 2009101941162A CN 200910194116 A CN200910194116 A CN 200910194116A CN 101701992 B CN101701992 B CN 101701992B
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Abstract
The invention discloses an electrified tester of a digital wireless type zinc oxide arrester, comprising a secondary voltage sensor, a leakage current sensor, a transmitter and a receiver; the transmitter comprises a first gear selection switch circuit, a first singlechip controller and a first wireless transmit-receive unit; the receiver comprises a second gear selection switch circuit, a second singlechip controller and a second wireless transmit-receive unit; the first gear selection switch circuit and the first wireless transmit-receive unit are respectively connected with the first singlechip controller, and the second gear selection switch circuit and the second wireless transmit-receive unit are respectively connected with the second singlechip controller. The transmitter and the receiver can transmit and receive signals in a wireless way, and the transmitter can be fixedly connected on a potential transformer secondary terminal when being used, and an operator only needs to move the receiver and the leakage current sensor to measure the leakage current signals, the usage is convenient and the operation is easy; in addition, the computing processing speed can be improved.
Description
Technical field
The present invention relates to a kind of electrified tester of digital wireless type zinc oxide arrester.
Background technology
In the prior art, electrified tester for zinc oxide arrester is made up of secondary voltage sensor, leakage current sensor, signal processing apparatus.The secondary voltage sensor is connected with signal processing apparatus respectively with leakage current sensor; Because secondary voltage sensor and leakage current sensor transmission all is simulating signal, need to use the signal cable that has screen layer to connect secondary voltage sensor, leakage current sensor and signal processing apparatus for guaranteeing that signal is unattenuated.Its principle of work is that leakage current sensor is transferred to signal processing apparatus through lead with leakage current signal; The secondary voltage sensor is transferred to signal processing apparatus with the secondary voltage signal; Measure the electrical angle between leakage current and the secondary voltage by signal processing apparatus, judge the running status of Zinc-Oxide Arrester with this.But because the secondary voltage sensor is to be fixedly connected with the voltage transformer secondary terminal, leakage current sensor is to be connected with lightning arrester, and in the real work; Several groups at least of the lightning arresters of a transformer station, tens groups at most, and be distributed in different positions; Therefore need be between each lightning arrester frequent movable signal treating apparatus, tester and signal cable; Particularly the signal processing apparatus volume and weight is big, moves very inconvenience, and labor intensity of operating personnel is bigger.
Summary of the invention
The invention provides a kind of electrified tester of digital wireless type zinc oxide arrester, its conveniently moving, processing ease.
Technical scheme of the present invention is: a kind of electrified tester of digital wireless type zinc oxide arrester comprises: secondary voltage sensor, leakage current sensor, transmitter and receiver;
Said transmitter comprises the first GSS Gear Select Switch circuit, first singlechip controller and first wireless transmit/receive units; Said receiver comprises the second GSS Gear Select Switch circuit, second singlechip controller and second wireless transmit/receive units; The said first GSS Gear Select Switch circuit is connected with said first singlechip controller respectively with first wireless transmit/receive units; The said second GSS Gear Select Switch circuit is connected with said second singlechip controller respectively with second wireless transmit/receive units;
When said first singlechip controller is connected with the voltage transformer secondary terminal through the secondary voltage sensor; The said first GSS Gear Select Switch circuit is exported first predetermined voltage, and said first singlechip controller is set at emission mode according to this first predetermined voltage with said first wireless transmit/receive units; When said second singlechip controller is connected with lightning arrester through leakage current sensor; The said second GSS Gear Select Switch circuit is exported second predetermined voltage, and said second singlechip controller is set at receiving mode according to this second predetermined voltage with said second wireless transmit/receive units;
To second wireless transmit/receive units, said second singlechip controller is through this synchro measure signal of the second wireless transmit/receive units wireless receiving through the first wireless transmit/receive units wireless transmit synchro measure signal for said first singlechip controller; Said second singlechip controller receives the current signal of said leakage current sensor output after receiving the synchro measure signal, and utilizes fourier algorithm to calculate the initial phase angle of this current signal; Said first singlechip controller receives the voltage signal of said secondary voltage sensor output after the schedule time of sending said synchro measure signal; And utilize fourier algorithm to calculate the initial phase angle of this voltage signal; And the initial phase angle of this voltage signal is wirelessly transmitted to second wireless transmit/receive units through said first wireless transmit/receive units; Said second singlechip controller is through the initial phase angle of the said voltage signal of the second wireless transmit/receive units wireless receiving; And calculate the difference of initial phase angle of initial phase angle and the voltage signal of this current signal, and show through the display screen that is connected with the second singlechip controller.
Electrified tester of digital wireless type zinc oxide arrester of the present invention; Transmitter and receiver can the wireless receiving and dispatching signal; Transmitter can be fixedly connected on the voltage transformer secondary terminal during use; The leakage current signal that the operator only needs mobile receiver and leakage current sensor to go to measure lightning arrester gets final product, and need move whole signal processing apparatus with respect to prior art, and operation ratio easy to use is easier to; In addition in the present invention; Transmitter only needs the initial phase angle of calculating voltage signal, the initial phase angle that receiver only needs calculated current signal; The function of prior art in the initial phase angle of the calculating voltage signal of signal processing apparatus and current signal is distributed on the transmitter and receiver; Then can improve computing speed, improve work efficiency.
Description of drawings
Fig. 1 is an electrified tester of digital wireless type zinc oxide arrester of the present invention structure principle chart in one embodiment;
Fig. 2 is an electrified tester of digital wireless type zinc oxide arrester of the present invention structure principle chart in another embodiment;
Fig. 3 is the present invention's first GSS Gear Select Switch circuit circuit theory diagrams in one embodiment;
Fig. 4 is the present invention's second GSS Gear Select Switch circuit circuit theory diagrams in one embodiment;
Fig. 5 is the present invention's first analog filtering amplifying circuit circuit theory diagrams in one embodiment;
Fig. 6 is the present invention's second analog filtering amplifying circuit circuit theory diagrams in one embodiment;
Fig. 7 is the application synoptic diagram of electrified tester of digital wireless type zinc oxide arrester of the present invention at a specific embodiment.
Embodiment
Electrified tester of digital wireless type zinc oxide arrester of the present invention; Transmitter and receiver can the wireless receiving and dispatching signal; Transmitter can be fixedly connected on the voltage transformer secondary terminal during use; The operator only needs mobile receiver and leakage current sensor, need move whole signal processing apparatus with respect to prior art, and operation ratio easy to use is easier to; In addition in the present invention; Transmitter only needs the initial phase angle of calculating voltage signal, the initial phase angle that receiver only needs calculated current signal; The function of prior art in the initial phase angle of the calculating voltage signal of signal processing apparatus and current signal is distributed on the transmitter and receiver; Then can improve computing speed, improve work efficiency.
Below in conjunction with accompanying drawing specific embodiment of the present invention is done a detailed elaboration.
Electrified tester of digital wireless type zinc oxide arrester of the present invention like Fig. 1, comprising: secondary voltage sensor, leakage current sensor, transmitter and receiver;
Said transmitter comprises the first GSS Gear Select Switch circuit, first singlechip controller and first wireless transmit/receive units; Said receiver comprises the second GSS Gear Select Switch circuit, second singlechip controller and second wireless transmit/receive units; The said first GSS Gear Select Switch circuit is connected with said first singlechip controller respectively with first wireless transmit/receive units; The said second GSS Gear Select Switch circuit is connected with said second singlechip controller respectively with second wireless transmit/receive units; The secondary voltage sensor is used for the voltage signal of measuring voltage mutual inductor, and leakage current sensor is used to measure the leakage current signal of lightning arrester;
When said first singlechip controller is connected with the voltage transformer secondary terminal through the secondary voltage sensor; The said first GSS Gear Select Switch circuit is exported first predetermined voltage, and said first singlechip controller is set at emission mode according to this first predetermined voltage with said first wireless transmit/receive units; When said second singlechip controller is connected with lightning arrester through leakage current sensor; The said second GSS Gear Select Switch circuit is exported second predetermined voltage, and said second singlechip controller is set at receiving mode according to this second predetermined voltage with said second wireless transmit/receive units;
To second wireless transmit/receive units, said second singlechip controller is through this synchro measure signal of the second wireless transmit/receive units wireless receiving through the first wireless transmit/receive units wireless transmit synchro measure signal for said first singlechip controller; Said second singlechip controller receives the current signal of said leakage current sensor output after receiving the synchro measure signal, and utilizes fourier algorithm to calculate the initial phase angle of this current signal; Said first singlechip controller receives the voltage signal of said secondary voltage sensor output in the schedule time (this schedule time can the be provided with according to actual needs) back of the said synchro measure signal of emission; And utilize fourier algorithm to calculate the initial phase angle of this voltage signal; And the initial phase angle of this voltage signal is wirelessly transmitted to second wireless transmit/receive units through said first wireless transmit/receive units; Said second singlechip controller is through the initial phase angle of the said voltage signal of the second wireless transmit/receive units wireless receiving; And calculate the difference of initial phase angle of initial phase angle and the voltage signal of this current signal, and show through the display screen that is connected with the second singlechip controller.The difference of the current signal that shows through display screen and the initial phase angle of voltage signal can be reacted the insulation status of tested lightning arrester.
The function that said first singlechip controller is launched said synchro measure signal is to make transmitter and receiver begin to measure in synchronization; In a preferred embodiment; The form of this synchro measure signal can be 32 bit 1XXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX; 1 wherein the first this signal of expression is the command signal that begins to measure, and 31 figure places are thereafter represented the time delay of this command signal.This synchro measure signal is launched 16 times continuously, and time delay increases progressively along with the increase of emitting times, just can begin to measure as long as receiver receives wherein any command signal.
In practical application; The function of first singlechip controller and second singlechip controller is the same; Need operating personnel through operating its output voltage size of GSS Gear Select Switch circuit control; Control the emission of first singlechip controller and second singlechip controller or receive mode of operation, when the said second GSS Gear Select Switch circuit was exported first predetermined voltage, said second singlechip controller was set at the emission mode of operation according to this first predetermined voltage; When the said first GSS Gear Select Switch circuit was exported second predetermined voltage, said first singlechip controller was set at the reception mode of operation according to this second predetermined voltage.So the mode of operation of Receiver And Transmitter of the present invention can be set according to user's needs, has further facilitated the user and has manipulated.
In a preferred embodiment; Like Fig. 2; Said transmitter comprises that also the voltage signal that is used for the output of secondary voltage sensor carries out the first analog filtering amplifying circuit that amplification filtering is handled, and said receiver comprises that also the current signal that is used for leakage current sensor output carries out the second analog filtering amplifying circuit that amplification filtering is handled; The first analog filtering amplifying circuit is connected between said first singlechip controller and the secondary voltage sensor, and the second analog filtering amplifying circuit is connected between said second singlechip controller and the leakage current sensor.This analog filtering amplifying circuit with simulating signal amplify, filtering so that current signal or voltage signal satisfy the requirement of singlechip controller.
In a preferred embodiment; Said first singlechip controller is before emission synchro measure signal; Also be used to receive the voltage signal of secondary voltage sensor output; Utilize fourier algorithm to calculate the initial phase angle of this voltage signal, said first singlechip controller passes through the first wireless transmit/receive units wireless transmit synchro measure signal to second wireless transmit/receive units when initial phase angle is zero.Do like this and can eliminate, and cause the irregular distribution of measuring error, and avoid the mains frequency low-frequency oscillation to produce measuring error because voltage signal initial measurement angle is different.
In a preferred embodiment, said first singlechip controller also is used to calculate the waveform of the voltage signal of secondary voltage sensor output, and shows through first display screen that is connected with first singlechip controller; Said second singlechip controller also is used to calculate the waveform of the current signal of leakage current sensor output, and shows through second display screen that is connected with the second singlechip controller.Response voltage signal or current signal so more intuitively.
In a preferred embodiment; Said first singlechip controller also is used for the voltage signal of secondary voltage sensor output is wirelessly transmitted to second wireless transmit/receive units through first wireless transmit/receive units; The second singlechip controller receives this voltage signal through second wireless transmit/receive units; And calculate the waveform of this voltage signal, show through the display screen that is connected with the second singlechip controller.The waveform of the waveform of contrast potential signal and current signal so easily.According to actual needs, the fundamental voltage amplitude that first singlechip controller also can the calculating voltage signal, and show through first display screen; The second singlechip controller also can calculated current signal fundamental voltage amplitude, and show through second display screen; The computing function of singlechip controller can certainly be set according to user's actual needs, can calculate the numerical value that other have the actual measurement meaning.
In a preferred embodiment, like Fig. 3, the said first GSS Gear Select Switch circuit comprises the first resistance R C1, the second resistance R C2, the 6th resistance R C6, the 4th resistance R C4, the 5th resistance R C5, the first single-pole double-throw switch (SPDT) SW3 and the second single-pole double-throw switch (SPDT) SW2;
The end ground connection of said the 6th resistance R C6; The other end is connected with the input end CH5 OUT of said first singlechip controller and first end 5 of the first single-pole double-throw switch (SPDT) SW3 respectively; Second end 6 of the first single-pole double-throw switch (SPDT) SW3 is through the 5th resistance R C5 ground connection; Power supply (can be different voltages with different; Be 3.3V shown in the figure) be connected with the 5th resistance R C5 through the first resistance R C1, the second resistance R C2, the 4th resistance R C4 successively, the 3rd end 4 of the first single-pole double-throw switch (SPDT) SW3 and the 3rd end 3 of the second single-pole double-throw switch (SPDT) SW2 are connected between the second resistance R C2 and the 4th resistance R C4, and second end 1 of the second single-pole double-throw switch (SPDT) SW2 is connected between the first resistance R C1 and the second resistance R C2; First end 2 of the second single-pole double-throw switch (SPDT) SW2 connects power supply (can be different voltages with different, be 3.3V shown in the figure).Through changing the gear annexation of the first single-pole double-throw switch (SPDT) SW3 and the second single-pole double-throw switch (SPDT) SW2; The output voltage of output terminal CH5 OUT and difference, such first singlechip controller can be judged according to this output voltage and be in the emission mode of operation or receive mode of operation.
In a preferred embodiment; Like Fig. 4, the said second GSS Gear Select Switch circuit comprises the 7th resistance R C7, the 8th resistance R C8, the 9th resistance R C9, the tenth resistance R C10, the 11 resistance R C11, the 3rd single-pole double-throw switch (SPDT) SW4 and the 4th single-pole double-throw switch (SPDT) SW5;
The end ground connection of said the 11 resistance R C11; The other end is connected with the input end CH6OUT of said second singlechip controller and first end 12 of the 3rd single-pole double-throw switch (SPDT) SW4 respectively; Second end 11 of the 3rd single-pole double-throw switch (SPDT) SW4 is through the tenth resistance R C10 ground connection; Power supply (can be different voltages with different; Be 3.3V shown in the figure) be connected with the tenth resistance R C10 through the 7th resistance R C7, the 8th resistance R C8, the 9th resistance R C9 successively, the 3rd end 10 of the 3rd single-pole double-throw switch (SPDT) SW4 and the 3rd end 8 of the 4th single-pole double-throw switch (SPDT) SW5 are connected between the 9th resistance R C9 and the tenth resistance R C10, and second end 7 of the 4th single-pole double-throw switch (SPDT) SW5 is connected between the 7th resistance R C7 and the 8th resistance R C8; First end 9 of the 4th single-pole double-throw switch (SPDT) SW5 connects power supply (can be different voltages with different, be 3.3V shown in the figure).Through changing the gear annexation of the 3rd single-pole double-throw switch (SPDT) SW4 and the 4th single-pole double-throw switch (SPDT) SW5; The output voltage of output terminal CH6 OUT is different, and the second singlechip controller can be judged according to this output voltage and is in emission mode of operation or reception mode of operation like this.
In a preferred embodiment; Like Fig. 5, the said first analog filtering amplifying circuit comprises that first slip becomes resistance R303, the second slip change hinders R31, the first to the 12 resistance, the first amplifier U17A, the second amplifier U17D, first capacitor C 31 and second capacitor C 32;
The output terminal CH3IN of said secondary voltage sensor is connected with the end g of the first swept resistance R303 and an end of second resistance R 302 respectively, the other end ground connection of second resistance R 302, and the other end h of the first swept resistance R303 is through first resistance R, 305 ground connection; The sliding end i of the first swept resistance R303 is connected with the positive input terminal 3 of the first amplifier U17A through the 3rd resistance R 33; The positive input terminal 3 of the first amplifier U17A is connected with the sliding end 1 of the second swept resistance R31 through the 4th resistance R 34; Second slides becomes the end j ground connection of resistance R31; Other end k connects power supply (can be different voltages with different, be 5.0V shown in the figure) through the 7th resistance R 304 ground connection and the 6th resistance R 32 respectively; The negative input end 2 of the first amplifier U17A is through the 5th resistance R 35 ground connection; The output terminal 1 of the first amplifier U17A through the 8th resistance R 36 is connected with the negative input end 2 of the first amplifier U17A, reach pass through the 9th resistance R 37, second capacitor C 32 is connected with the input end CH3 OUT of first singlechip controller and the output terminal 14 of the second amplifier U17D respectively; The positive input terminal 12 of the second amplifier U17D through the tenth resistance R 38 be connected between the 9th resistance R 37 and second capacitor C 32, and through first capacitor C, 31 ground connection, the negative input end 12 of the second amplifier U17D respectively through the 11 resistance R 39 ground connection, and be connected with the output terminal 14 of the second amplifier U17D through the 12 resistance R 301.The model of the first amplifier U17A and the second amplifier U17D can all be LM324.
In a preferred embodiment; Like Fig. 6, the said second analog filtering amplifying circuit comprises that the 3rd slip becomes resistance R403, the 4th slip change hinders R41, the 13 to the 24 resistance, the 3rd amplifier U17B, the 4th amplifier U17C, the 3rd capacitor C 41 and the 4th capacitor C 42; The model of the 3rd amplifier U17B and the 4th amplifier U17C can all be LM324;
The output terminal CH4IN of said leakage current sensor is connected with the end a of the 3rd swept resistance R403 and an end of the 13 resistance R 402 respectively; The other end ground connection of the 13 resistance R 402, the other end b of the 3rd swept resistance R403 is through the 14 resistance R 405 ground connection; The sliding end c of the 3rd swept resistance R403 is connected with the positive input terminal 5 of the 3rd amplifier U17B through the 15 resistance R 43; The positive input terminal 5 of the 3rd amplifier U17B is connected with the sliding end f of the 4th swept resistance R41 through the 16 resistance R 44; The 4th slides becomes the end e ground connection of resistance R41; Other end d connects power supply (can be different voltages with different, be 5.0V shown in the figure) and the 19 resistance R 404 ground connection through the 18 resistance R 42 respectively; The negative input end 6 of the 3rd amplifier U17B is through the 17 resistance R 45 ground connection; The output terminal 7 of the 3rd amplifier U17B is connected with the negative input end 6 of the 3rd amplifier R17B through the 20 resistance R 46; The output terminal 7 of the 3rd amplifier U17B is connected with the input end CH4 OUT of second singlechip controller and the output terminal 8 of the 4th amplifier U17C respectively through the 21 resistance R 47, the 4th capacitor C 42 successively; The positive input terminal 10 of the 4th amplifier U17C respectively through the 22 resistance R 48 be connected between the 21 resistance R 47 and the 4th capacitor C 42, and through the 3rd capacitor C 41 ground connection, the negative input end 9 of the 4th amplifier U17C respectively through the 23 resistance R 49 ground connection, and be connected with the output terminal 8 of the 4th amplifier U17C through the 24 resistance R 401.
Like Fig. 7; Be the synoptic diagram of tester of the present invention in practical application, this specific embodiment is to be example with 110KV open type transformer station, and transmitter is placed on the 110KV bus-bar potential transformer; Transmitter is fixedly connected with the voltage transformer secondary terminal through the secondary voltage sensor that is used for measuring voltage mutual inductor voltage signal; Receiver is hand-held by operating personnel, and the leakage current sensor of the leakage current signal of receiver through being used to measure lightning arrester is connected with lightning arrester, and receiver passes through the connection of change and different lightning arrester; Can measure the insulation situation of tested lightning arrester, easy for operation.
Above-described embodiment of the present invention does not constitute the qualification to protection domain of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection domain of the present invention.
Claims (9)
1. an electrified tester of digital wireless type zinc oxide arrester is characterized in that, comprising: secondary voltage sensor, leakage current sensor, transmitter and receiver;
Said transmitter comprises the first GSS Gear Select Switch circuit, first singlechip controller and first wireless transmit/receive units; Said receiver comprises the second GSS Gear Select Switch circuit, second singlechip controller and second wireless transmit/receive units; The said first GSS Gear Select Switch circuit is connected with said first singlechip controller respectively with first wireless transmit/receive units, and the said second GSS Gear Select Switch circuit is connected with said second singlechip controller respectively with second wireless transmit/receive units;
When said first singlechip controller is connected with the voltage transformer secondary terminal through the secondary voltage sensor; The said first GSS Gear Select Switch circuit is exported first predetermined voltage, and said first singlechip controller is set at emission mode according to this first predetermined voltage with said first wireless transmit/receive units; When said second singlechip controller is connected with lightning arrester through leakage current sensor; The said second GSS Gear Select Switch circuit is exported second predetermined voltage, and said second singlechip controller is set at receiving mode according to this second predetermined voltage with said second wireless transmit/receive units;
To second wireless transmit/receive units, said second singlechip controller is through this synchro measure signal of the second wireless transmit/receive units wireless receiving through the first wireless transmit/receive units wireless transmit synchro measure signal for said first singlechip controller; Said second singlechip controller receives the current signal of said leakage current sensor output after receiving the synchro measure signal, and utilizes fourier algorithm to calculate the initial phase angle of this current signal;
Said first singlechip controller receives first voltage signal of said secondary voltage sensor output after the schedule time of the said synchro measure signal of emission; And utilize fourier algorithm to calculate the initial phase angle of this voltage signal; And the initial phase angle of this voltage signal is wirelessly transmitted to second wireless transmit/receive units through said first wireless transmit/receive units; Said second singlechip controller is through the initial phase angle of the said voltage signal of the second wireless transmit/receive units wireless receiving; And calculate the difference of initial phase angle of initial phase angle and the voltage signal of this current signal, and show through the display screen that is connected with the second singlechip controller.
2. electrified tester of digital wireless type zinc oxide arrester according to claim 1; It is characterized in that: said transmitter comprises that also the voltage signal that is used for the output of secondary voltage sensor carries out the first analog filtering amplifying circuit that amplification filtering is handled, and said receiver comprises that also the current signal that is used for leakage current sensor output carries out the second analog filtering amplifying circuit that amplification filtering is handled; The first analog filtering amplifying circuit is connected between said first singlechip controller and the secondary voltage sensor, and the second analog filtering amplifying circuit is connected between said second singlechip controller and the leakage current sensor.
3. electrified tester of digital wireless type zinc oxide arrester according to claim 1 and 2; It is characterized in that: said first singlechip controller is before the said synchro measure signal of emission; Also be used to receive second voltage signal of secondary voltage sensor output; Utilize fourier algorithm to calculate the initial phase angle of this voltage signal, said first singlechip controller passes through the said synchro measure signal of the first wireless transmit/receive units wireless transmit to second wireless transmit/receive units when initial phase angle is zero.
4. electrified tester of digital wireless type zinc oxide arrester according to claim 3; It is characterized in that: said first singlechip controller also is used to calculate the waveform of the voltage signal of secondary voltage sensor output, and shows through the display screen that is connected with first singlechip controller; Said second singlechip controller also is used to calculate the waveform of the current signal of leakage current sensor output, and shows through the display screen that is connected with the second singlechip controller.
5. electrified tester of digital wireless type zinc oxide arrester according to claim 4; It is characterized in that: said first singlechip controller also is used for the voltage signal of secondary voltage sensor output is wirelessly transmitted to second wireless transmit/receive units through first wireless transmit/receive units; The second singlechip controller receives this voltage signal through second wireless transmit/receive units; And calculate the waveform of this voltage signal, show through the display screen that is connected with the second singlechip controller.
6. electrified tester of digital wireless type zinc oxide arrester according to claim 1 is characterized in that: the said first GSS Gear Select Switch circuit comprises first resistance, second resistance, the 6th resistance, the 4th resistance, the 5th resistance, first single-pole double-throw switch (SPDT) and second single-pole double-throw switch (SPDT);
One end ground connection of said the 6th resistance; The other end is connected with the input end of said first singlechip controller and first end of first single-pole double-throw switch (SPDT) respectively; Second end of first single-pole double-throw switch (SPDT) is through the 5th resistance eutral grounding; Power supply is connected with the 5th resistance through first resistance, second resistance, the 4th resistance successively; The 3rd end of first single-pole double-throw switch (SPDT) and the 3rd end of second single-pole double-throw switch (SPDT) are connected between second resistance and the 4th resistance, and second end of second single-pole double-throw switch (SPDT) is connected between first resistance and second resistance, first termination power of second single-pole double-throw switch (SPDT).
7. according to claim 1 or 6 described electrified tester of digital wireless type zinc oxide arrester, it is characterized in that: the said second GSS Gear Select Switch circuit comprises the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, the 3rd single-pole double-throw switch (SPDT) and the 4th single-pole double-throw switch (SPDT);
One end ground connection of said the 11 resistance; The other end is connected with the input end of said second singlechip controller and first end of the 3rd single-pole double-throw switch (SPDT) respectively; Second end of the 3rd single-pole double-throw switch (SPDT) is through the tenth resistance eutral grounding; Power supply is connected with the tenth resistance through the 7th resistance, the 8th resistance, the 9th resistance successively; The 3rd end of the 3rd single-pole double-throw switch (SPDT) and the 3rd end of the 4th single-pole double-throw switch (SPDT) are connected between the 9th resistance and the tenth resistance, and second end of the 4th single-pole double-throw switch (SPDT) is connected between the 7th resistance and the 8th resistance, first termination power of the 4th single-pole double-throw switch (SPDT).
8. electrified tester of digital wireless type zinc oxide arrester according to claim 2 is characterized in that: the said first analog filtering amplifying circuit comprises that first slip becomes resistance, second slip becomes resistance, the first to the 12 resistance, first amplifier, second amplifier, first electric capacity and second electric capacity;
The output terminal of said secondary voltage sensor is connected with an end of first swept resistance and an end of second resistance respectively, the other end ground connection of second resistance, and the other end of first swept resistance is through first resistance eutral grounding; The sliding end of first swept resistance is connected with the positive input terminal of first amplifier through the 3rd resistance; The positive input terminal of first amplifier is connected with the sliding end of second swept resistance through the 4th resistance; Second slides becomes an end ground connection of resistance, and the other end connects power supply through the 7th resistance eutral grounding and the 6th resistance respectively; The negative input end of first amplifier is through the 5th resistance eutral grounding; The output terminal of first amplifier through the 8th resistance is connected, reach passes through the 9th resistance with the negative input end of first amplifier, second electric capacity is connected with the input end of first singlechip controller and the output terminal of second amplifier respectively; The positive input terminal of second amplifier through the tenth resistance be connected between the 9th resistance and second electric capacity, and through first capacity earth, the negative input end of second amplifier respectively through the 11 resistance eutral grounding, and be connected with the output terminal of second amplifier through the 12 resistance.
9. according to claim 2 or 8 described electrified tester of digital wireless type zinc oxide arrester, it is characterized in that: the said second analog filtering amplifying circuit comprises that the 3rd slip becomes resistance, the 4th slip becomes resistance, the 13 to the 24 resistance, the 3rd amplifier, the 4th amplifier, the 3rd electric capacity and the 4th electric capacity;
The output terminal of said leakage current sensor is connected with an end of the 3rd swept resistance and an end of the 13 resistance respectively, the other end ground connection of the 13 resistance, and the other end of the 3rd swept resistance is through the 14 resistance eutral grounding; The sliding end of the 3rd swept resistance is connected with the positive input terminal of the 3rd amplifier through the 15 resistance; The positive input terminal of the 3rd amplifier is connected with the sliding end of the 4th swept resistance through the 16 resistance; The 4th slides becomes an end ground connection of resistance, and the other end connects power supply and the 19 resistance eutral grounding through the 18 resistance respectively; The negative input end of the 3rd amplifier is through the 17 resistance eutral grounding; The output terminal of the 3rd amplifier is connected with the negative input end of the 3rd amplifier through the 20 resistance; The output terminal of the 3rd amplifier is connected with the input end of second singlechip controller and the output terminal of the 4th amplifier respectively through the 21 resistance, the 4th electric capacity successively; The positive input terminal of the 4th amplifier respectively through the 22 resistance be connected between the 21 resistance and the 4th electric capacity, and through the 3rd capacity earth, the negative input end of the 4th amplifier respectively through the 23 resistance eutral grounding, and be connected with the output terminal of the 4th amplifier through the 24 resistance.
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| CN2009101941162A CN101701992B (en) | 2009-11-24 | 2009-11-24 | Electrified tester of digital wireless type zinc oxide arrester |
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| CN2009101941162A CN101701992B (en) | 2009-11-24 | 2009-11-24 | Electrified tester of digital wireless type zinc oxide arrester |
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| CN101701992B true CN101701992B (en) | 2012-06-20 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102262171A (en) * | 2010-05-27 | 2011-11-30 | 上海科能电气科技有限公司 | MOA (Metal Oxide Arrester) live-line detection system based on GPS synchronization |
| CN102095955A (en) * | 2010-12-24 | 2011-06-15 | 中国长江三峡集团公司 | Device and method for testing industrial-frequency discharge of zinc oxide lightning arrester |
| CN102568175A (en) * | 2010-12-28 | 2012-07-11 | 苏州华电电气股份有限公司 | Wireless transmission device of high-voltage measuring signal |
| CN102156241B (en) * | 2011-05-31 | 2013-06-05 | 江苏省电力公司连云港供电公司 | On-line monitoring unit for leakage current of zinc oxide arrester |
| CN102680851B (en) * | 2012-05-30 | 2014-12-17 | 深圳市英威腾电气股份有限公司 | Current leakage detecting method and current leakage detecting device |
| CN103675593A (en) * | 2013-12-11 | 2014-03-26 | 国家电网公司 | Electrification testing system and method for zinc oxide arrester in armored cabinet |
| CN104034979A (en) * | 2014-06-10 | 2014-09-10 | 国家电网公司 | Live testing device and testing system for zinc oxide lightning arrester |
| CN105929284A (en) * | 2016-06-24 | 2016-09-07 | 国网辽宁省电力有限公司抚顺供电公司 | Wireless tester and testing method for live-line measuring zinc oxide arrester |
| CN106707085B (en) * | 2017-01-11 | 2024-02-13 | 鞍山恒泰电气有限公司 | Secondary wiring verification device for switch cabinet |
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| CN2847308Y (en) * | 2005-07-08 | 2006-12-13 | 河海大学常州校区 | Circuit device of leakage current detector of lightning arrestor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2847308Y (en) * | 2005-07-08 | 2006-12-13 | 河海大学常州校区 | Circuit device of leakage current detector of lightning arrestor |
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