CN201663579U - Charged distribution transformer with automatic voltage regulating function - Google Patents
Charged distribution transformer with automatic voltage regulating function Download PDFInfo
- Publication number
- CN201663579U CN201663579U CN2010201648930U CN201020164893U CN201663579U CN 201663579 U CN201663579 U CN 201663579U CN 2010201648930 U CN2010201648930 U CN 2010201648930U CN 201020164893 U CN201020164893 U CN 201020164893U CN 201663579 U CN201663579 U CN 201663579U
- Authority
- CN
- China
- Prior art keywords
- transformer
- circuit
- phase
- voltage
- distribution transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000001105 regulatory effect Effects 0.000 title abstract 2
- 238000004804 winding Methods 0.000 claims abstract description 25
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 21
- 238000005070 sampling Methods 0.000 claims abstract description 18
- 238000012806 monitoring device Methods 0.000 abstract 2
- 230000003068 static effect Effects 0.000 abstract 2
- 238000002955 isolation Methods 0.000 description 18
- 230000005611 electricity Effects 0.000 description 6
- 101100365087 Arabidopsis thaliana SCRA gene Proteins 0.000 description 5
- 101000668165 Homo sapiens RNA-binding motif, single-stranded-interacting protein 1 Proteins 0.000 description 5
- 102100039692 RNA-binding motif, single-stranded-interacting protein 1 Human genes 0.000 description 5
- 101150105073 SCR1 gene Proteins 0.000 description 5
- 101100134054 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) NTG1 gene Proteins 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 101000668170 Homo sapiens RNA-binding motif, single-stranded-interacting protein 2 Proteins 0.000 description 2
- 102100039690 RNA-binding motif, single-stranded-interacting protein 2 Human genes 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002964 excitative effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Control Of Stepping Motors (AREA)
Abstract
A charged distribution transformer with an automatic voltage regulating function comprises a three-phase winding, a stepping motor, a monitoring device and a three-phase on-load tap changer, each phase of the on-load tap changer consists of a movable contact, a static contact, a mechanical arm and a switching circuit, wherein the movable contact is fixed on the mechanical arm, the mechanical arm is fixed on a rotor of the stepping motor, the static contacts in the three phases of on-load tap changer are respectively connected with taps on the primary side of the three-phase winding correspondingly, the movable contacts are connected with star points, each switching circuit is formed by a bidirectional thyristor and a current limit resistor in series connection, the tap arranged on the primary side of each phase of winding is connected with the star point via the switching circuit, and the monitoring device consists of a voltage transformer, a current transformer, a voltage sampling circuit, a current sampling circuit, a single-chip microcomputer, a stepping motor driving circuit and a thyristor trigging circuit. On a condition of switching on a load power supply, the distribution transformer can adjust output voltage at any time according to fluctuation of the power grid, so that the output voltage of the distribution transformer keeps stable and qualified all the time.
Description
Technical field
The utility model relates to the distribution transformer of installing on the bar, and particularly a kind of on-load is adjusted the distribution transformer of output voltage.
Background technology
The distribution transformer of installing on the bar is the voltage that the voltage transitions of 10KV is become 0.4KV, is subjected to the influence of grid voltage change and load peak and low ebb, and the distribution transformer output voltage changes especially greatly.Sometimes offset voltage acceptability limit often.Some power receiving equipment and important department are had to that stabilized power supply device is installed separately and are satisfied the demand, and this has just increased unnecessary expense to electricity consumption, have also increased electric damage simultaneously.
Though distribution transformer has been installed no excitatory shunting switch on the part bar, but after when pressure regulation is operated, must all disconnecting transformer frequency response, pedal bar by the electrician and operate the work of finishing regulation stall, change the distribution transformer output voltage, it is very inconvenient to operate, and is subjected to the influence of environment, daytime, sleet.
The utility model content
For overcome 10KV on the existing bar the 0.4KV distribution transformer can not on-load adjust the deficiency of output voltage at any time, the purpose of this utility model provides a kind of distribution transformer of on-load automatic Regulation, under the situation that does not disconnect load power source, can be according to the fluctuation of line voltage, at any time adjust output voltage, make the output voltage of distribution transformer always keep stablizing qualified, be mainly used in industrial and mining enterprises' electricity consumption, residential electricity consumption, the rural electricity consumption of 380V, 220V.
For achieving the above object, the utility model is by the following technical solutions:
A kind of distribution transformer of on-load automatic Regulation, comprise three phase windings, the former limit of every phase winding is provided with a plurality of shunting taps, it is characterized in that: this distribution transformer also comprises stepping motor, supervising device and three-phase on load tap changer, every phase on load tap changer is by moving contact, fixed contact, mechanical arm and commutation circuit are formed, described fixed contact has a plurality of, the curved layout of these fixed contacts, moving contact is fixed on the mechanical arm, mechanical arm in the three-phase on load tap changer all is fixed on the rotor of stepping motor, fixed contact in the three-phase on load tap changer respectively with the former limit of three phase windings on the corresponding connection of each shunting tap, moving contact is connected with asterism, each commutation circuit is made of bidirectional triode thyristor and current-limiting resistance series connection, the commutation circuit that the shunting tap that is provided with on the former limit of described every phase winding all passes through in the on load tap changer is connected with asterism, supervising device is by voltage transformer, current transformer, voltage sampling circuit, current sampling circuit, single-chip microcomputer, stepper motor driving circuit, thyristor gating circuit is formed, the input of voltage transformer is connected with the secondary of distribution transformer, the output of voltage transformer is connected with the analog quantity port of single-chip microcomputer through voltage sampling circuit, the input of current transformer is connected with the secondary of distribution transformer, the output of current transformer is connected with the analog quantity port of single-chip microcomputer through current sampling circuit, and stepper motor driving circuit and thyristor gating circuit all are connected with the general input of single-chip microcomputer.
Because adopt technique scheme: the utility model has following positive beneficial effect:
Innovation part of the present utility model is: for distribution transformer on the bar has designed supporting mechano-electronic mixed type on load tap changer and supervising device, on load tap changer utilizes stepping motor to drive moving contact on the mechanical arm, realize the switching of transformer gear, realize auxiliary the switching by bidirectional triode thyristor, volume is little, reliable operation, long service life, supervising device detects the voltage and current of (distribution transformer secondary) in real time by instrument transformer, and detected signal is transferred to single-chip microcomputer, single-chip microcomputer is according to the setting of program, send SCR trigger pulse, connect commutation circuit, send the step motor control pulse then, make stepping motor rotate corresponding angle, finish the switching of distribution transformer gear, it is qualified to make the distribution transformer output voltage always keep stablizing.The core of supervising device is a single-chip microcomputer, and single-chip microcomputer can be connected with host computer by serial communication interface, realizes Long-distance Control by host computer.The utility model can make the low pressure power receiving equipment, under the situation that does not increase any pressure stabilizing device, obtains to stablize qualified voltage.Some responsible consumer is even more important, makes power receiving equipment can give full play to its usefulness.And can realize intelligent pressure regulation of electrical network and voltage stabilizing function, for the electrical network intellectuality is contributed.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model distribution transformer.
Fig. 2 is the schematic diagram of the utility model stepping motor.
Fig. 3 is the schematic diagram of the utility model supervising device.
Embodiment
Please refer to Fig. 1, the utility model is a kind of distribution transformer of on-load automatic Regulation, comprise three phase windings, the former limit of every phase winding is provided with a plurality of shunting taps, it is characterized in that: this distribution transformer also comprises stepping motor, supervising device and three-phase on load tap changer, every phase on load tap changer is by moving contact, fixed contact, mechanical arm and commutation circuit are formed, fixed contact has a plurality of, these fixed contacts are around the curved layout of rotor of stepping motor, moving contact is fixed on the mechanical arm, mechanical arm in the three-phase on load tap changer all is fixed on the rotor of stepping motor, the fixed contact in the three-phase on load tap changer respectively with the former limit of three phase windings on the corresponding connection of each shunting tap.
Be the example explanation with the A phase winding below, in the present embodiment, fixed contact has five, be respectively S1, S2, S3, S4, S5, the curved layout of these fixed contacts, moving contact V is fixed on the mechanical arm X, mechanical arm X is fixed on the rotor of stepping motor M, each fixed contact S1, S2, S3, S4, S5 respectively with the A phase winding on the corresponding connection of five shunting tap K1, K2, K3, K4, K5, moving contact V is connected with asterism N, commutation circuit has five:
First commutation circuit is made of bidirectional triode thyristor SCR1 and current-limiting resistance R1 series connection.
Second commutation circuit is made of bidirectional triode thyristor SCR2 and current-limiting resistance R2 series connection.
The 3rd commutation circuit is made of bidirectional triode thyristor SCR3 and current-limiting resistance R3 series connection.
The 4th commutation circuit is made of bidirectional triode thyristor SCR4 and current-limiting resistance R4 series connection.
The 5th commutation circuit is made of bidirectional triode thyristor SCR5 and current-limiting resistance R5 series connection.
Five shunting tap K1, K2 on the former limit of A phase winding, K3, K4, K5 are connected with asterism N by above-mentioned the first, second, third, fourth, the 5th commutation circuit respectively.
Please refer to Fig. 3, supervising device is made up of voltage transformer YH, current transformer LH, single-chip microprocessor MCU, stepper motor driving circuit, thyristor gating circuit.
Voltage transformer YH is four end member spares, two voltage input ends are arranged, two voltage output ends, two voltage input ends are got the line voltage of distribution transformer secondary (low-pressure side), and two voltage output ends are connected with the analog quantity port RA1 of single-chip microprocessor MCU (model is PIC16F873) through voltage sampling circuit.
Current transformer LH is four end member spares, two current input terminals are arranged, two current output terminals, two current input terminals are got the line current of distribution transformer secondary (low-pressure side), and two current output terminals are connected with single-chip microprocessor MCU (model is PIC16F873) analog quantity port RA2 through current sampling circuit.
Stepper motor driving circuit is connected with the general input of single-chip microprocessor MCU (model is PIC16F873), and thyristor gating circuit is connected with the general input of single-chip microprocessor MCU (model is PIC16F873).
Please refer to Fig. 2, the stepping motor M of present embodiment is a four phase step motor, and it has four windings, is respectively L1, L2, L3, L4, and stepper motor driving circuit has four groups, as shown in Figure 3.
First group of stepper motor driving circuit is made up of transistor Q11, Q12 and photoelectrical coupler VT1, transistor Q11 is connected with the general input RB1 of single-chip microprocessor MCU, transistor Q12 is connected with the coil L1 of stepping motor, connects by photoelectrical coupler VT1 between transistor Q11, the Q12.
Second group of stepper motor driving circuit is made up of transistor Q21, Q22 and photoelectrical coupler VT2, transistor Q21 is connected with the general input RB2 of single-chip microprocessor MCU, transistor Q22 is connected with the coil L2 of stepping motor, connects by photoelectrical coupler VT2 between transistor Q21, the Q22.
The 3rd group of stepper motor driving circuit is made up of transistor Q31, Q32 and photoelectrical coupler VT3, transistor Q31 is connected with the general input RB3 of single-chip microprocessor MCU, transistor Q32 is connected with the coil L3 of stepping motor, connects by photoelectrical coupler VT3 between transistor Q31, the Q32.
The 4th group of stepper motor driving circuit is made up of transistor Q41, Q42 and photoelectrical coupler VT4, transistor Q41 is connected with the general input RB4 of single-chip microprocessor MCU, transistor Q42 is connected with the coil L4 of stepping motor, connects by photoelectrical coupler VT4 between transistor Q41, the Q42.
The stepper motor driving circuit principle is as shown in Figure 3:
Single-chip microprocessor MCU is exported control impuls from input/output end port RB1-RB4, after transistor Q11, Q21, Q31, Q41 amplify, by photoelectric coupler isolation, again after transistor Q12, Q22, Q32, Q42 amplify, give each coil L1, L2, L3, the L4 of stepping motor chronologically successively, make stepping motor just change, reverse along with different pulse signals and stop the action.
As long as each coil to stepping motor is switched on by suitable sequential, just can make stepping motor M rotate specific angle.For example, during beginning, the input/output end port RB1 of single-chip microprocessor MCU exports high level signal, input/output end port RB2, RB3, RB4 output low level signal, at this moment, and transistor Q11 conducting, transistor Q21, Q31, Q41 end.Coupling through photoelectrical coupler VT1, transistor Q12 conducting, coil L1 gets, coil L2, L3, L4 dead electricity, 0, No. 3 teeth of the magnetic pole of coil L1 and rotor align, simultaneously, 1, No. 4 tooth of rotor just and the magnetic pole of coil L2, L3 produce side set, 2, No. 5 teeth of rotor just and the magnetic pole of coil L3, L4 produce side set.
In like manner, when the input/output end port RB2 of single-chip microprocessor MCU output high level signal, input/output end port RB1, RB3, RB4 output low level signal, at this moment, coil L2 gets, coil L1, L3, L4 dead electricity, because the effect of the magnetic line of force makes rotor rotation between the magnetic line of force of coil L2 and 1, No. 4 tooth, 1, No. 4 tooth of rotor aligns with the magnetic pole of coil L2, and the magnetic pole of 0, No. 3 tooth and coil L1, L4 produces side set, 2, No. 5 teeth just with the magnetic pole generation side set of coil L3, L4.And the like, coil L1, L2, L3, L4 take turns flow-thru electrode, and then rotor can be along counterclockwise rotating.
Thyristor gating circuit has five:
First thyristor gating circuit guarantees that by transistor Q13, divider resistance R13, pulse isolation transformer T1, positive pulse diode D1 constitutes, the base stage of transistor Q13 is connected with the input/output end port RC0 of single-chip microprocessor MCU, divider resistance R13 is connected with the emitter of transistor Q13, the former end bay of pulse isolation transformer T1 is connected on the two ends of divider resistance R13, and the secondary of pulse isolation transformer T1 guarantees that through positive pulse diode D1 is connected with the gate pole of bidirectional triode thyristor SCR1.
Second thyristor gating circuit guarantees that by transistor Q23, divider resistance R23, pulse isolation transformer T2, positive pulse diode D2 constitutes, the base stage of transistor Q23 is connected with the input/output end port RC1 of single-chip microprocessor MCU, divider resistance R23 is connected with the emitter of transistor Q23, the former end bay of pulse isolation transformer T2 is connected on the two ends of divider resistance R23, and the secondary of pulse isolation transformer T2 guarantees that through positive pulse diode D2 is connected with the gate pole of bidirectional triode thyristor SCR2.
The 3rd thyristor gating circuit guarantees that by transistor Q33, divider resistance R33, pulse isolation transformer T3, positive pulse diode D3 constitutes, the base stage of transistor Q33 is connected with the input/output end port RC2 of single-chip microprocessor MCU, divider resistance R33 is connected with the emitter of transistor Q33, the former end bay of pulse isolation transformer T3 is connected on the two ends of divider resistance R33, and the secondary of pulse isolation transformer T3 guarantees that through positive pulse diode D3 is connected with the gate pole of bidirectional triode thyristor SCR3.
The 4th thyristor gating circuit guarantees that by transistor Q43, divider resistance R43, pulse isolation transformer T4, positive pulse diode D4 constitutes, the base stage of transistor Q43 is connected with the input/output end port RC3 of single-chip microprocessor MCU, divider resistance R43 is connected with the emitter of transistor Q43, the former end bay of pulse isolation transformer T4 is connected on the two ends of divider resistance R43, and the secondary of pulse isolation transformer T4 guarantees that through positive pulse diode D4 is connected with the gate pole of bidirectional triode thyristor SCR4.
The 5th thyristor gating circuit guarantees that by transistor Q53, divider resistance R53, pulse isolation transformer T5, positive pulse diode D5 constitutes, the base stage of transistor Q53 is connected with the input/output end port RC4 of single-chip microprocessor MCU, divider resistance R53 is connected with the emitter of transistor Q53, the former end bay of pulse isolation transformer T5 is connected on the two ends of divider resistance R53, and the secondary of pulse isolation transformer T5 guarantees that through positive pulse diode D5 is connected with the gate pole of bidirectional triode thyristor SCR5.
The output of voltage transformer YH is connected with the analog quantity port RA1 of single-chip microprocessor MCU through voltage sampling circuit, voltage sampling circuit is made up of filter capacitor C1, C2, C3, parallel resistance R6, filter resistance R7, rectifier diode D6, the effect of voltage sampling circuit is that the height situation of current output voltage is gathered, and converts the voltage signal of the analog quantity port RA1 requirement that meets single-chip microprocessor MCU to.
The output of current transformer LH is connected with the analog quantity input port RA2 of single-chip microprocessor MCU through current sampling circuit, current sampling circuit is made up of filter capacitor C4, C5, C6, parallel resistance R8, filter resistance R9, rectifier diode D7, the effect of current sampling circuit is that the size cases of current output current is gathered, and converts the d. c. voltage signal of the analog quantity port RA2 requirement that meets single-chip microprocessor MCU to.Single-chip microprocessor MCU is judged the distribution transformer load condition by this d. c. voltage signal.
Single-chip microprocessor MCU utilizes voltage transformer, current transformer to detect the voltage and current of distribution transformer secondary in real time, then with data storage in the reference voltage and the rated current of storing compare, need to regulate if output voltage is high or low, and the distribution transformer electric current is excess load not, just carries out corresponding adjusting.
The number of turn that increases or reduce the former limit of distribution transformer winding realizes by adjusting moving contact and fixed contact tap, before moving contact separates with former fixed contact, want the corresponding commutation circuit of first conducting, promptly will utilize thyristor gating circuit earlier the bidirectional triode thyristor conducting in the commutation circuit.
Please refer to Fig. 1, for example, the original position of moving contact V is to contact with deciding contact S1, and at this moment, the current path on the former limit of distribution transformer A phase winding (high-pressure side) is: A-tap K1-fixed contact S1-moving contact V-asterism N.
When distribution transformer begins pressure regulation, when being converted into tap 2 by tap 1 adjusting, high level pulse signal of RC0 port output of single-chip microprocessor MCU, make transistor Q13 conducting, this pulse signal is loaded into the gate pole of bidirectional triode thyristor SCR1 through pulse isolation transformer T1, bidirectional triode thyristor SCR1 conducting, the current path on the former limit of A phase winding is transformed into: A-tap K1-bidirectional triode thyristor SCR1-asterism N.
Then, single-chip microprocessor MCU is given each coil L1, L2, L3, the L4 energising of stepping motor chronologically by stepper motor driving circuit.Make stepping motor along with pulse signal reverses, the angle of the setting of rotor rotation of stepping motor M, the moving contact V on the moving mechanical arm X of rotor banding contacts with fixed contact S2.Bidirectional triode thyristor SCR1 is transferred to voluntarily by conducting behind current over-zero and ending, and has finished the pressure regulation process one time, and this moment, distribution transformer moved in tap 2.
In like manner, regulate by tap 2 when distribution transformer and be converted into when taking out 3.At first the input/output end port RC1 of single-chip microprocessor MCU exports a high level pulse signal, make transistor Q23 conducting, this pulse signal is loaded into the gate pole of bidirectional triode thyristor SCR2 through pulse isolation transformer T2, bidirectional triode thyristor SCR2 conducting, the current path on the former limit of A phase winding is transformed into: A-tap K2-bidirectional triode thyristor SCR2-asterism N.
Then, single-chip microprocessor MCU is given each coil L1, L2, L3, the L4 energising of stepping motor chronologically by stepper motor driving circuit.Make stepping motor along with pulse signal reverses, the angle of the setting of rotor rotation of stepping motor M, the moving contact V on the moving mechanical arm X of rotor banding contacts with fixed contact S3.Bidirectional triode thyristor SCR2 is transferred to voluntarily by conducting behind current over-zero and ending.Finished the pressure regulation process twice, this moment, distribution transformer ran on tap 3.
The core of supervising device is a single-chip microprocessor MCU, and single-chip microprocessor MCU can also be connected with host computer by serial communication interface RXD, TXD, realizes Long-distance Control by host computer.The circuit structure and the control principle of distribution transformer B phase winding of the present utility model, C phase winding are identical with above-mentioned A phase winding.
In sum as can be known, the utility model utilizes supervising device to send adjusting command, regulates the output voltage of distribution transformer under without the situation of deenergization, thereby realizes distribution transformer automatic Regulation and controlled pressure regulation.
Claims (1)
1. the distribution transformer of an on-load automatic Regulation, comprise three phase windings, the former limit of every phase winding is provided with a plurality of shunting taps, it is characterized in that: this distribution transformer also comprises stepping motor, supervising device and three-phase on load tap changer, every phase on load tap changer is by moving contact, fixed contact, mechanical arm and commutation circuit are formed, described fixed contact has a plurality of, the curved layout of these fixed contacts, moving contact is fixed on the mechanical arm, mechanical arm in the three-phase on load tap changer all is fixed on the rotor of stepping motor, fixed contact in the three-phase on load tap changer respectively with the former limit of three phase windings on the corresponding connection of each shunting tap, moving contact is connected with asterism, each commutation circuit is made of bidirectional triode thyristor and current-limiting resistance series connection, the commutation circuit that the shunting tap that is provided with on the former limit of described every phase winding all passes through in the on load tap changer is connected with asterism, supervising device is by voltage transformer, current transformer, voltage sampling circuit, current sampling circuit, single-chip microcomputer, stepper motor driving circuit, thyristor gating circuit is formed, the input of voltage transformer is connected with the secondary of distribution transformer, the output of voltage transformer is connected with the analog quantity port of single-chip microcomputer through voltage sampling circuit, the input of current transformer is connected with the secondary of distribution transformer, the output of current transformer is connected with the analog quantity port of single-chip microcomputer through current sampling circuit, and stepper motor driving circuit and thyristor gating circuit all are connected with the general input of single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201648930U CN201663579U (en) | 2010-04-21 | 2010-04-21 | Charged distribution transformer with automatic voltage regulating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201648930U CN201663579U (en) | 2010-04-21 | 2010-04-21 | Charged distribution transformer with automatic voltage regulating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201663579U true CN201663579U (en) | 2010-12-01 |
Family
ID=43233996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201648930U Expired - Lifetime CN201663579U (en) | 2010-04-21 | 2010-04-21 | Charged distribution transformer with automatic voltage regulating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201663579U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105827119A (en) * | 2016-06-15 | 2016-08-03 | 国网青海省电力公司 | Automatic voltage stabilizing transformer |
| CN108269704A (en) * | 2017-12-29 | 2018-07-10 | 国网北京市电力公司 | Load ratio bridging switch and transformer |
| EP3561823A1 (en) * | 2018-04-27 | 2019-10-30 | Ormazabal Corporate Technology, A.I.E. | High-voltage electrical equipment with a device for limiting the magnetising current |
| CN110998476A (en) * | 2017-06-13 | 2020-04-10 | 豪倍公司 | Power connector with comprehensive state monitoring function |
-
2010
- 2010-04-21 CN CN2010201648930U patent/CN201663579U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105827119A (en) * | 2016-06-15 | 2016-08-03 | 国网青海省电力公司 | Automatic voltage stabilizing transformer |
| CN110998476A (en) * | 2017-06-13 | 2020-04-10 | 豪倍公司 | Power connector with comprehensive state monitoring function |
| US11515677B2 (en) | 2017-06-13 | 2022-11-29 | Hubbell Incorporated | Power connector with integrated status monitoring |
| CN108269704A (en) * | 2017-12-29 | 2018-07-10 | 国网北京市电力公司 | Load ratio bridging switch and transformer |
| CN108269704B (en) * | 2017-12-29 | 2019-09-06 | 国网北京市电力公司 | Load ratio bridging switch and transformer |
| EP3561823A1 (en) * | 2018-04-27 | 2019-10-30 | Ormazabal Corporate Technology, A.I.E. | High-voltage electrical equipment with a device for limiting the magnetising current |
| CN110415953A (en) * | 2018-04-27 | 2019-11-05 | 欧玛嘉宝公司技术经济利益集团 | High voltage electric equipment with the device for limiting magnetizing current |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10147562B2 (en) | On-load voltage regulation tap switch for transformer and switch control method | |
| CN102185543A (en) | Energy-saving soft-start device for high-voltage asynchronous motor | |
| CN205246826U (en) | Circuit breaker short circuit ability test circuit | |
| CN201663579U (en) | Charged distribution transformer with automatic voltage regulating function | |
| CN204089346U (en) | The rig net electricity electric power system that a kind of voltage regulates automatically | |
| CN201750381U (en) | Energy-saving soft starting device for high-voltage asynchronous motor | |
| CN204205598U (en) | System saving electricity optimizes the automatic regulation voltage pressure stabilizing device of electric energy and equipment group thereof | |
| CN105259382A (en) | Multi-transformation ratio current transformer unified multiplying power metering method and device | |
| CN103178527B (en) | Voltage deviation adjustor | |
| CN203983006U (en) | Capacity and pressure regulating three-phase transformer | |
| CN105337420B (en) | A kind of power transformer of energy-saving automatic distribution | |
| CN102299670A (en) | Centralized control cabinet for oil pumping unit well field | |
| CN107632198B (en) | Dual-power electric quantity acquisition device and application method thereof | |
| CN202282754U (en) | High-voltage motor soft starting device implemented by finished low-voltage motor soft starter | |
| CN208299708U (en) | Threephase asynchronous machine starting device | |
| CN200990561Y (en) | Feeder line bidirectional stepping automatic voltage regulator | |
| CN202817775U (en) | Voltage regulating and capacitance regulating type integrated reactive power compensation device | |
| CN203193283U (en) | Voltage deviation regulator | |
| CN103915846B (en) | A kind of for the energy-conservation of base station and Intelligent power distribution device | |
| CN203574350U (en) | Intelligent residual current protection device | |
| CN203367136U (en) | Controller with permanent-magnet mechanism | |
| CN201117417Y (en) | Flow equalizing autotransformer and automatic pressure regulating three phase balancing electricity saver | |
| CN101222131A (en) | On-line automatic control instrument for transformer core current | |
| CN111026216A (en) | Station is with becoming automatic voltage regulation device | |
| CN104124044A (en) | Capacity-adjusting and voltage-adjusting three-phase transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180820 Address after: 071000 Baoding City, Hebei Province Patentee after: Baoding prosperous power on unit equipment Co., Ltd Address before: 071051 No. 3, unit 4, 855 windsail Road, new town, Baoding, Hebei, 101 Co-patentee before: Li Suoyi Patentee before: Yang Yi Effective date of registration: 20180820 Address after: 071000 Baoding City, Hebei Province Patentee after: Baoding prosperous power on unit equipment Co., Ltd Address before: 071051 No. 3, unit 4, 855 windsail Road, new town, Baoding, Hebei, 101 Co-patentee before: Li Suoyi Patentee before: Yang Yi |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |