CN202111534U - Induction power-taking device used for on-line monitoring of switch cupboard - Google Patents
Induction power-taking device used for on-line monitoring of switch cupboard Download PDFInfo
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- CN202111534U CN202111534U CN2011201927878U CN201120192787U CN202111534U CN 202111534 U CN202111534 U CN 202111534U CN 2011201927878 U CN2011201927878 U CN 2011201927878U CN 201120192787 U CN201120192787 U CN 201120192787U CN 202111534 U CN202111534 U CN 202111534U
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Abstract
The utility model discloses an induction power-taking device used for the on-line monitoring of a switch cupboard, being used for the power supply of the on-line monitoring device of an overhead high voltage transmission line. In the utility model, a one-chip microcomputer is the core of a control module; the output signals of a full wave rectifier circuit and a branch circuit are detected, and the detected signals are operated by employing a phase angle control calculating method, thereby phase angle control signals are generated; the control module controls the on/off of a trigger circuit by outputting the phase angle control signals, thereby the current and the voltage of the full wave rectifier circuit connected with the trigger circuit are controlled, and the magnetization current on the power-taking iron core is controlled. In the utility model, with the induction power-taking device used for the on-line monitoring of a switch cupboard, the stable power higher than 2 W can be provided for a load under the condition that the current of the high tension transmission line is at the range from 40 A to 1000 A, and no nonsaturated and severe heating phenomenon of the iron core happens.
Description
Technical field
The utility model relates to a kind of current transformer electricity getting device that is used for aerial high-voltage power transmission line, relates in particular to a kind of current transformer electricity getting device based on the phase angle control principle.
Background technology
Along with the development of technology, the monitoring equipment that is operated on the ultra-high-tension power transmission line is more and more, like conductor temperature measurement mechanism, lead dip measuring device, high-voltage maintenance live line working robot etc.When transmission line was carried out on-line monitoring, the supply of its power supply was one of key issue.Because of the various transducers of acquired signal and signal transmitting unit etc. all near overhead wire, can not use conventional power supply.And because the checkout equipment long-term work, has proposed very high requirement to reliability in the open air, it is very important that the design of power-supply system just seems.Utilize special iron core induction energy fetching to give the high-pressure side power electronics; Because high-pressure side electronic circuit and photoelectric device power consumption are minimum; Can the quality of power supply of electrical network not exerted an influence; And itself can think an xegregating unit, and special induction energy fetching electric supply installation suspending, is a kind of supply power mode that has development prospect reliably.
Open day is on April 21st, 2010; Publication number is CN 101697430A; The Chinese patent document that name is called " based on the CT electricity getting device of high voltage transmission line of power control method " discloses a kind of technical scheme of power taking on ultra-high-tension power transmission line; The ultra-high-tension power transmission line of this electricity getting device successively passes with the measurement magnetic core is middle from the power taking magnetic core; The power taking magnetic core is wound with the power taking magnetic core coil respectively, measures magnetic core coil with measurement magnetic core outside, and the power taking magnetic core coil is connected with overvoltage protection and transfer relay, and overvoltage protection and transfer relay, current rectifying and wave filtering circuit, DC/DC module, power management module, voltage-stabilizing output circuit connect; Current rectifying and wave filtering circuit is connected with voltage and current detection circuit, and voltage and current detection circuit is connected to power management module; Power management module is connected with farad capacitor, and farad capacitor is connected to voltage-stabilizing output circuit; Measure magnetic core coil and be connected with sample circuit, sample circuit is connected with power management module.For this technical scheme, the CT of ultra-high-tension power transmission line (being current transformer, current transformer) electricity getting device, iron core avoids unsaturated bad with the effect that reduces the iron core caloric value during work.
Summary of the invention
The purpose of the utility model provides a kind of induction electricity getting device that is used for the switch cubicle on-line monitoring based on phase angle control principle power control method; When ultra-high-tension power transmission line electric current this device when 40A is in the 1000A scope can provide the stable power electric energy greater than 2W for the on-line monitoring instrument; And effectively avoid the power taking iron core unsaturated, reduce power taking iron core caloric value.
In order to realize the foregoing invention purpose, the utility model provides a kind of induction electricity getting device that is used for the switch cubicle on-line monitoring, and it is connected with a ultra-high-tension power transmission line, and this current transformer electricity getting device comprises:
One power taking iron core and coil thereof, said ultra-high-tension power transmission line pass said power taking iron core and in the power taking coil, produce one first induction alternating current;
One current measurement iron core and coil thereof, said ultra-high-tension power transmission line pass said current measurement iron core and in the current measurement coil, produce one second induction alternating current;
One circuits for triggering, it is connected with said power taking coil, converts said first induced current into an induction alternating voltage;
One current rectifying and wave filtering circuit, it is connected with said circuits for triggering, exports after converting said induction alternating voltage into a direct current voltage;
One bleeder circuit, it is connected with said current rectifying and wave filtering circuit, with being output as a voltage input signal after the said direct voltage dividing potential drop;
One full-wave rectifying circuit, it is connected with said current measurement coil, converts the said second induction alternating current into a current input signal;
One control module, it is connected respectively with said bleeder circuit, full-wave rectifying circuit and circuits for triggering, and it generates corresponding phase angle control signal according to voltage input signal that receives and current input signal and exports from its output, with the break-make of control triggering electric circuit.
In the present technique scheme; When passing through electric current in the high voltage transmission line that passes power taking iron core and current measurement iron core; Because electromagnetic induction effect; Produce the induction alternating current in power taking coil and the current measurement coil respectively, this induction alternating current is carried out follow-up processing, can drive low power electronic equipment and carry out work.The described induction alternating current that is used for producing in the induction electricity getting device power taking coil of switch cubicle on-line monitoring of the utility model is controlled by circuits for triggering; Regulate its voltage; And after current rectifying and wave filtering circuit carry out rectifying and wave-filtering and convert metastable direct voltage into, as the operating voltage of low power electronic equipment.Produce voltage input signal after the direct voltage dividing potential drop of bleeder circuit with current rectifying and wave filtering circuit output simultaneously, the induction AC signal that the current measurement coil produces is converted into current input signal through full-wave rectifying circuit.Voltage input signal and current input signal are input in the control module; Control module is converted into digital signal corresponding; And control control algolithm according to phase angle and wake up with a start computing, generate corresponding phase angle control signal, and then export this phase angle control signal to circuits for triggering; Thereby the break-make of control triggering electric circuit is to realize the control to the power-supply circuit electric current.
Preferably; The said induction electricity getting device that is used for the switch cubicle on-line monitoring also comprises a DC/DC change-over circuit; It is connected with said current rectifying and wave filtering circuit; Further convert said direct voltage into one first direct current supply voltage, its magnitude of voltage is 4.2V, as the operating voltage of low power electronic equipment.
Said circuits for triggering comprise an optocoupler, a two-way controllable silicon, one first electric capacity, one first resistance, one second resistance, one the 3rd resistance, one the 4th resistance, one first diode; Wherein, the negative electrode of bidirectional triode thyristor and anode are connected the two ends of said power taking coil respectively; First electric capacity and the 4th resistance series connection back are parallelly connected with the input of bidirectional triode thyristor and current rectifying and wave filtering circuit; The 1st pin position of said optocoupler connects a working power through said first resistance; The 2nd pin position of said optocoupler is connected with the output of said control module; The 6th pin position of said optocoupler is connected with the 1st pin position of bidirectional triode thyristor through second resistance; The 4th pin position of said optocoupler connects said The Trigger of Bidirectional Triode Thyristor end, and connects the 2nd pin position of bidirectional triode thyristor through the 3rd resistance; The two ends of said first diode connect the two ends of said power taking coil respectively, and said induction alternating voltage is clamped down in an amplitude.This amplitude is preferably 150V.
Said control module comprises a single-chip microcomputer, has the port that inserts said voltage input signal and current input signal respectively on the said single-chip microcomputer, and the port of the said phase angle control signal of an output, and said single-chip microcomputer also is connected with said working power.
Preferably; The said induction electricity getting device that is used for the switch cubicle on-line monitoring also comprises a linear voltage-stabilizing circuit; It is connected with said DC/DC change-over circuit, further converts the said first direct current supply voltage into one second direct current supply voltage, and the said second direct current supply voltage transfers to said control module and circuits for triggering through lead; As said working power, the second direct current supply voltage is 3.3V.
Current rectifying and wave filtering circuit in the present technique scheme, bleeder circuit, full-wave rectifying circuit; And the DC/DC change-over circuit in preferred version and linear voltage-stabilizing circuit are the conventional typical circuit that adopts in this area; So repeat no more at this, this paper will further introduce it in embodiment.
The described induction electricity getting device that is used for the switch cubicle on-line monitoring of the utility model is through adopting above technical scheme; Make when the ultra-high-tension power transmission line electric current is in 40A arrives the 1000A scope; This electricity getting device can provide the stable power electric energy greater than 2W for the on-line monitoring instrument; And effectively avoid the undersaturated phenomenon of power taking iron core, reduce power taking iron core caloric value.
Description of drawings
Come the described induction electricity getting device that is used for the switch cubicle on-line monitoring of the utility model is further specified below in conjunction with accompanying drawing and specific embodiment.
Fig. 1 is the described structured flowchart that is used for the induction electricity getting device of switch cubicle on-line monitoring of the utility model.
Fig. 2 shows the described induction electricity getting device circuits for triggering that are used for the switch cubicle on-line monitoring of the utility model, and the annexation of circuits for triggering B and current rectifying and wave filtering circuit C, power taking loop A.
Fig. 3 is the described circuit diagram that is used for the induction electricity getting device DC/DC change-over circuit of switch cubicle on-line monitoring of the utility model.
Fig. 4 is the described circuit diagram that is used for the induction electricity getting device full-wave rectifying circuit of switch cubicle on-line monitoring of the utility model.
Fig. 5 is the described circuit diagram that is used for the induction electricity getting device control module of switch cubicle on-line monitoring of the utility model.
Fig. 6 is the described circuit diagram that is used for the induction electricity getting device neutral line voltage stabilizing circuit of switch cubicle on-line monitoring of the utility model.
Embodiment
As shown in Figure 1, high voltage transmission line passes power taking iron core and current measurement iron core, through the electric power alternating current, produces the electromagnetic field of alternation in the high voltage transmission line; In power taking coil and current measurement coil, produce the induction alternating current respectively; Circuits for triggering are connected with the power taking coil, convert said first induced current into the induction alternating voltage; Current rectifying and wave filtering circuit is connected with circuits for triggering, will respond to alternating voltage and convert direct voltage into; The DC/DC change-over circuit is connected with current rectifying and wave filtering circuit, exports after this direct voltage further being converted into the direct current supply voltage of 4.2V, as the operating voltage of low power electronic equipment.In addition, bleeder circuit also is connected with current rectifying and wave filtering circuit, and it is output as a voltage input signal after with the direct voltage dividing potential drop, transfers to control module; Full-wave rectifying circuit is connected with the current measurement coil, converts the induction alternating current in this coil into current input signal, also transfers to control module; Control module is connected respectively with bleeder circuit, full-wave rectifying circuit and circuits for triggering, and it generates corresponding phase angle control signal according to voltage input signal that receives and current input signal and exports from its output, with the break-make power taking iron core of control triggering electric circuit.In addition, also have a linear voltage-stabilizing circuit in the present embodiment, it is connected with the DC/DC change-over circuit, the direct current supply voltage of 4.2V is further reduced to supply linear voltage-stabilizing circuit and circuits for triggering behind the supply power voltage of 3.3V, as their working power.
As shown in Figure 2, circuits for triggering B comprises optocoupler U1, bidirectional triode thyristor T1, first capacitor C 1, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4 and the first diode D1.Wherein, the negative electrode of bidirectional triode thyristor T1 and anode are connected the two ends of power taking loop A respectively; First capacitor C 1 and the 4th resistance R 4 series connection backs are parallelly connected with the input of bidirectional triode thyristor T1 and current rectifying and wave filtering circuit C; The 1st pin position of optocoupler U1 connects the working power U of 3.3V through first resistance R 1; The 2nd pin position of optocoupler U1 is connected with the output of control module; The 6th pin position of optocoupler U1 is connected with the 1st pin position of bidirectional triode thyristor T1 through second resistance R 2; The 4th pin position of optocoupler U1 connects the trigger end of bidirectional triode thyristor T1, and connects the 2nd pin position of bidirectional triode thyristor T1 through the 3rd resistance R 3; The two ends of the first diode D1 connect the two ends of said power taking loop A respectively, and said induction alternating voltage is clamped down in a 150V, wait super-high-current to destroy late-class circuit to prevent thunderbolt.
As shown in Figure 2, the current rectifying and wave filtering circuit C in the present embodiment comprises filter capacitor E1, E2, E3 and C4 and the protecting diode D2 of rectifier bridge U2 and parallel connection mutually.The effect of rectifier bridge U2 is to become direct voltage to the coil-induced ac voltage rectifier of power taking, and the effect of filter capacitor E1, E2, E3 and C4 is to reduce the ripple of the direct voltage of rectifier bridge output and leach the high frequency spike on the power supply.Diode D2 negative pole connects the forward output of rectifier bridge U2, minus earth, and its effect is to be limited in rectifier bridge output voltage U 2 below the 60V, assurance DC/DC chip is not broken by high pressure.
As shown in Figure 2, the bleeder circuit in the present embodiment comprises the 5th resistance R the 5, the 12 resistance R 12, the 8th capacitor C 8; The wherein output of the 5th resistance R 5 one termination current rectifying and wave filtering circuits; Another termination the 12 resistance R 12; The other end ground connection of the 12 resistance R 12, the 8th capacitor C 8 and 12 parallel connections of the 12 resistance R, an end of non-ground connection is with voltage input signal VoltIn input control module.
As shown in Figure 3; DC/DC change-over circuit in the present embodiment has the typical structure of DC/DC change-over circuit, and it comprises DC/DC chip U3, capacitor C 3, C4, C5, C6, C7, C8, C9, C10, C11, electrochemical capacitor E4, diode D3, inductance L 1, resistance R 6, R7, R8, R13, R14.Its effect is to convert the direct current that rectification filtering module is exported into direct current that voltage is 4.2V.Wherein the 3rd of DC/DC chip U3 the, 4 pin positions connect the 1st pin position of rectifier bridge U2, and its 8th pin position is through resistance R 6 ground connection, its 9th foot meridian capacitor C3 ground connection; Its 11st pin position is through capacitor C 9 ground connection; Its 1st pin position is through capacitor C 4 ground connection, and its 17th, 18,19 pin position short circuit is after capacitor C 5 is connected to its 20th pin position, and connects the negative pole of diode D3 simultaneously; Its 15th, 16 pin position connects the positive pole of diode D3, and its 12nd pin is the output of 4.2V power supply; Be connected between 4.2V power supply and the ground after resistance R 8, the R14 series connection; The feedback voltage effect is provided after its dividing potential drop; Feedback is connected to the 7th pin position of DC/DC chip U3, and capacitor C 11 and resistance R 13 series connection backs and capacitor C 10 also are connected between the 6th, the 7 pin positions of DC/DC chip U3; Inductance L 1 one is connected to the 4.2V power end, the 17th, 18, the 19 pin positions of a termination DC/DC chip U3; Connect between the negative pole and ground of diode D3 after capacitor C 6 and resistance R 7 parallel connections, electrochemical capacitor E4 and capacitor C 7 connect between 4.2V power supply and the ground and strobe.
As shown in Figure 4; In the full-wave rectifying circuit; The power supply of the first operational amplifier U6A and the second operational amplifier U6B adopts working power+3V3DP over the ground; The inverting input of the first operational amplifier U6A is through the 24 resistance R 24 ground connection, and the in-phase input end of the first operational amplifier U6A connects the negative pole of the 7th diode D7, the positive pole of output termination the 7th diode D7 of the first operational amplifier U6A and the negative pole of the 8th diode D8; The positive pole of the 8th diode D8 is received the in-phase input end of the second operational amplifier U6B through the 25 resistance R 25, and the inverting input of the second operational amplifier U6B is through the 26 resistance R 26 ground connection; The in-phase input end of one termination, the first operational amplifier U6A of the 23 resistance R 23; The other end connects an end of the 13 capacitor C 13 and an end of the 20 resistance R 20 respectively; Another termination current measurement coil of the 13 capacitor C 13; The in-phase input end of another termination second operational amplifier U6B of the 20 resistance R 20, the negative pole of the 21 resistance R 21 1 terminations the 7th diode D7, the positive pole of another termination the 8th diode D8; The in-phase input end of the 22 resistance R 22 1 terminations second operational amplifier U6B, the output of a termination second operational amplifier U6B; The output output current input signal CurrentIn of the second operational amplifier U6B.
As shown in Figure 5; Control module in the present embodiment is a core with single-chip microcomputer U4; It detects the current input signal and the voltage input signal of full-wave rectifying circuit and bleeder circuit input; And adopt the phase angle control algolithm to carry out computing, thereby produce phase angle control signal PhaseTriger to detected signal.Single-chip microcomputer U4 works under program control; Utilize inner A/D modular converter to convert current input signal and voltage input signal into digital quantity; According to the level of phase angle control algolithm control PhaseTriger end, reach control bidirectional triode thyristor T1 break-make, and then the purpose of power controlling.
The 6th pin position wiring property voltage stabilizing circuit of single-chip microcomputer U4 provides working power+3V3DP of method 3.3V; The 3rd pin position ground connection; The 9th pin connects the 3rd pin position of said interface J2 and meets working power+3V3DP of 3.3V through the 9th resistance R 9; The 10th pin position connects the 2nd pin position of said interface J2 and meets working power+3V3DP through the tenth resistance R 10, and its 7th, 8 pin position short circuit is after the 11 resistance R 11 ground connection, and the 4th, 5 pin positions are respectively through the 18 resistance R 18 and the 19 resistance R 19 ground connection; The 25th pin position receives voltage input signal Voltin; The 24th pin position received current input signal CurrentIn, the 15th pin position output phase angle control signal PhaseTriger, the 16th pin position connects the M_LED1 end; Interface J2 the 1st pin position meets working power+3V3DP of 3.3V, and the 4th pin position ground connection is the SCM program download interface.In essence, single-chip microcomputer U4 controls power output through phase angle, when primary current is big; In order to reduce power output and to prevent that magnetizing current is bigger; Iron core takes place unsaturated and the serious phenomenon of heating, requires to reduce phase angle theta, thus the magnetizing current on the phase angle theta reduction iron core; Reach the purpose of control power output in more among a small circle, iron core does not have unsaturated and generates heat not serious simultaneously.
As shown in Figure 6, the linear voltage-stabilizing circuit in the present embodiment is typical linear voltage-stabilizing circuit, and it comprises linear voltage stabilization chip U5, electrochemical capacitor E5, E6 and capacitor C 12.Wherein, linear voltage stabilization chip U5 the 1st, 2 pin position ground connection, the 3rd, 4 pin positions connect electrochemical capacitor E5 positive pole and 4.2V power end, connect 3.3V power end, electrochemical capacitor E6 positive pole and capacitor C 12 1 ends behind the 5th, 6, the 7 pin position short circuits.Electrochemical capacitor E5, E6 minus earth, capacitor C 12 other end ground connection.Its function is the direct current confession control module that the direct current of 4.2V is converted into 3.3V, and circuits for triggering use, and it can also supply with the full-wave rectifying circuit use in addition.
Be noted that the above specific embodiment of enumerating that is merely the utility model, obviously the utility model is not limited to above embodiment, and many similar variations are arranged thereupon.If those skilled in the art from all distortion that the disclosed content of the utility model directly derives or associates, all should belong to the protection range of the utility model.
Claims (7)
1. induction electricity getting device that is used for the switch cubicle on-line monitoring, it is connected with a ultra-high-tension power transmission line, it is characterized in that comprising:
One power taking iron core and coil thereof, said ultra-high-tension power transmission line pass said power taking iron core and in the power taking coil, produce one first induction alternating current;
One current measurement iron core and coil thereof, said ultra-high-tension power transmission line pass said current measurement iron core and in the current measurement coil, produce one second induction alternating current;
One circuits for triggering, it is connected with said power taking coil, converts said first induced current into an induction alternating voltage;
One current rectifying and wave filtering circuit, it is connected with said circuits for triggering, exports after converting said induction alternating voltage into a direct current voltage;
One bleeder circuit, it is connected with said current rectifying and wave filtering circuit, with being output as a voltage input signal after the said direct voltage dividing potential drop;
One full-wave rectifying circuit, it is connected with said current measurement coil, converts the said second induction alternating current into a current input signal;
One control module, it is connected respectively with said bleeder circuit, full-wave rectifying circuit and circuits for triggering, and it generates corresponding phase angle control signal according to voltage input signal that receives and current input signal and exports from its output, with the break-make of control triggering electric circuit.
2. the induction electricity getting device that is used for the switch cubicle on-line monitoring as claimed in claim 1 is characterized in that, also comprises: a DC/DC change-over circuit, it is connected with said current rectifying and wave filtering circuit, further converts said direct voltage into one first direct current supply voltage.
3. the induction electricity getting device that is used for the switch cubicle on-line monitoring according to claim 1 and 2; It is characterized in that said circuits for triggering (B) comprise an optocoupler (U1), a two-way controllable silicon (T1), one first electric capacity (C1), one first resistance (R1), one second resistance (R2), one the 3rd resistance (R3), one the 4th resistance (R4) and one first diode (D1); Wherein, the negative electrode of bidirectional triode thyristor (T1) and anode are connected the two ends of said power taking coil respectively; First electric capacity (C1) and the 4th resistance (R4) series connection back are parallelly connected with the input of bidirectional triode thyristor (T1) and current rectifying and wave filtering circuit (C); The 1st pin position of said optocoupler (U1) connects a working power (U) through said first resistance (R1); The 2nd pin position of said optocoupler (U1) is connected with the output of said control module; The 6th pin position of said optocoupler (U1) is connected with the 1st pin position of bidirectional triode thyristor (T1) through second resistance (R2); The 4th pin position of said optocoupler (U1) connects the trigger end of said bidirectional triode thyristor (T1), and connects the 2nd pin position of bidirectional triode thyristor (T1) through the 3rd resistance (R3); The two ends of said first diode (D1) connect the two ends of said power taking coil (A) respectively, and said induction alternating voltage is clamped down in an amplitude.
4. the induction electricity getting device that is used for the switch cubicle on-line monitoring as claimed in claim 3; It is characterized in that; Said control module comprises a single-chip microcomputer (U4); Have the port that inserts said voltage input signal and current input signal respectively on the said single-chip microcomputer, and the port of the said phase angle control signal of an output, said single-chip microcomputer (U4) also is connected with said working power.
5. the induction electricity getting device that is used for the switch cubicle on-line monitoring as claimed in claim 4; It is characterized in that; Also comprise: a linear voltage-stabilizing circuit, it is connected with said DC/DC change-over circuit, further converts the said first direct current supply voltage into one second direct current supply voltage; The said second direct current supply voltage transfers to said control module and circuits for triggering through lead, as said working power.
6. the induction electricity getting device that is used for the switch cubicle on-line monitoring as claimed in claim 2 is characterized in that, the said first direct current supply voltage is 4.2V.
7. the induction electricity getting device that is used for the switch cubicle on-line monitoring as claimed in claim 5 is characterized in that, the said second direct current supply voltage is 3.3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201927878U CN202111534U (en) | 2011-06-09 | 2011-06-09 | Induction power-taking device used for on-line monitoring of switch cupboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201927878U CN202111534U (en) | 2011-06-09 | 2011-06-09 | Induction power-taking device used for on-line monitoring of switch cupboard |
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| Publication Number | Publication Date |
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| CN202111534U true CN202111534U (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201927878U Expired - Lifetime CN202111534U (en) | 2011-06-09 | 2011-06-09 | Induction power-taking device used for on-line monitoring of switch cupboard |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542888A (en) * | 2013-09-27 | 2014-01-29 | 珠海鼎日电子科技有限公司 | Temperature and current online monitoring device of power equipment |
| CN107656119A (en) * | 2017-10-23 | 2018-02-02 | 浙江大学 | A kind of current sensor apparatus of passive and wireless |
| CN108710017A (en) * | 2018-05-03 | 2018-10-26 | 南京蓝园精瑞电气有限公司 | It is a kind of that electricity and measurement switching apparatus and system are taken based on single magnetic loop |
| CN110595639A (en) * | 2019-08-05 | 2019-12-20 | 贵州电网有限责任公司 | Power transmission line node temperature rise monitoring device based on induction electricity taking |
| CN111211584A (en) * | 2020-01-17 | 2020-05-29 | 安徽国锦电力工程有限公司 | Electric power transmission and transformation project's consumer power intelligent distribution system |
| CN112104022A (en) * | 2020-08-31 | 2020-12-18 | 浙江树人学院（浙江树人大学） | CT power supply |
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2011
- 2011-06-09 CN CN2011201927878U patent/CN202111534U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542888A (en) * | 2013-09-27 | 2014-01-29 | 珠海鼎日电子科技有限公司 | Temperature and current online monitoring device of power equipment |
| CN103542888B (en) * | 2013-09-27 | 2016-03-02 | 珠海鼎日电子科技有限公司 | The temperature of power equipment and electric current on-Line Monitor Device |
| CN107656119A (en) * | 2017-10-23 | 2018-02-02 | 浙江大学 | A kind of current sensor apparatus of passive and wireless |
| CN107656119B (en) * | 2017-10-23 | 2023-10-03 | 浙江大学 | Passive wireless current sensor device |
| CN108710017A (en) * | 2018-05-03 | 2018-10-26 | 南京蓝园精瑞电气有限公司 | It is a kind of that electricity and measurement switching apparatus and system are taken based on single magnetic loop |
| CN108710017B (en) * | 2018-05-03 | 2024-04-02 | 深圳市蓝希望电子有限公司 | Electricity taking and measuring switching device and system based on single magnetic loop |
| CN110595639A (en) * | 2019-08-05 | 2019-12-20 | 贵州电网有限责任公司 | Power transmission line node temperature rise monitoring device based on induction electricity taking |
| CN111211584A (en) * | 2020-01-17 | 2020-05-29 | 安徽国锦电力工程有限公司 | Electric power transmission and transformation project's consumer power intelligent distribution system |
| CN112104022A (en) * | 2020-08-31 | 2020-12-18 | 浙江树人学院（浙江树人大学） | CT power supply |
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Granted publication date: 20120111 |