CN203193283U - Voltage deviation regulator - Google Patents
Voltage deviation regulator Download PDFInfo
- Publication number
- CN203193283U CN203193283U CN 201320143592 CN201320143592U CN203193283U CN 203193283 U CN203193283 U CN 203193283U CN 201320143592 CN201320143592 CN 201320143592 CN 201320143592 U CN201320143592 U CN 201320143592U CN 203193283 U CN203193283 U CN 203193283U
- Authority
- CN
- China
- Prior art keywords
- voltage
- power transformer
- switch
- phase place
- electromagnetic coupler
- 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
Images
Landscapes
- Ac-Ac Conversion (AREA)
Abstract
The utility model discloses a voltage deviation regulator. The voltage deviation regulator provided by the utility model comprises the following parts: a voltage classifier T1, a multiplexer switching matrix K1-Kn comprising n switches, a phase switching unit and an electromagnetic coupler G. The high-end of the voltage classifier T1 is in parallel connection to a low voltage side of a power transformer T; one end of the multiplexer switching matrix K1-Kn is respectively connected with classification taps of the voltage classifier T1; the other end of the multiplexer switching matrix K1-Kn and the low-end of the voltage classifier is connected to an input terminal of the electromagnetic coupler G through the phase switching unit; and the electromagnetic coupler G is series connection with one side of a power transformer. The regulator provided by the utility model does not contain contact switch relying on mechanical electrical device for actuation at primary or secondary side of the power transformer, so the reliability of voltage deviation regulation is increased, the failure rate is significantly reduced, and the probability of power interruption caused by failure of power supply regulation system is very small; therefore, the voltage deviation regulator has cost performance.
Description
Technical field
The utility model relates to the voltage of power regulation technology, is specifically related to a kind of voltage deviation adjuster for electrical power distribution system.
Background technology
In electrical power distribution system, mains ripple is inevitable.In order to guarantee the quality of power supply of powering, reduce the supply power voltage deviation, the method of regulation voltage deviation commonly used is to adopt no-load (no excitation) or on load tap changer to regulate the on high-tension side tap of power transformer at present, thereby the mode of the transformation ratio of change power transformer realizes voltage-regulation.The necessary first disconnecting consumers of no-load (no excitation) pressure regulation and power supply ability implementation and operation obviously have significant limitation; The tap that on load tap changer is regulated power transformer is the method that the bringing onto load that comparatively extensively adopts is regulated the supply power voltage deviation, and this method adopts on high-tension side tap that multi-gear switch switches power transformer to compare with secondary voltage ratio (number of turn) to change primary.Yet, because on load tap changer is a kind of by electric motor driven mechanical switch, shunting switch can produce electric arc when the tap of the on high-tension side loop of band year switching transformer in actual applications, and electric arc can produce adverse effect to the shunting switch contact, reduce switch life and reliability, make the transformer oil in the oil groove produce carbonization simultaneously, cause the class of insulation to descend; In addition, electronic mechanical mechanism failure rate is also very high.So on load tap changer voltage regulating mode commonly used at present exists the life-span weak point, poor reliability, the action cycle is long, the shortcoming that failure rate is high.Therefore, domestic and international many scholars and professional make great efforts to improve the on-load voltage regulation technology.A kind of scheme is to utilize solid-state switch and mechanical switch to form hybrid switch (mechanical type modified model), during switching, allows solid-state switch move earlier, and mechanical switch moves again after delay a period of time, solves the problem that produces electric arc when switching in this way.Adopt the vacuum on-load operation switch that vacuum bubbles constitutes (as the German MR AVT111 of company type, its vacuum bubbles is MR and the cooperative development of German siemens company) in addition, with reduce or elimination electric arc to the influence of switch contact and transformer oil.In recent years, more concern be (the UED type thyristor of producing as ABB AB do not have the arc on load tap changer) such as arc-less type on load tap changer voltage-regulating techniques of adopting solid-state switch to substitute mechanical structure and contact are arranged, but because above technical scheme complex structure, problems such as the reliability of work and manufacturing cost are difficult to obtain commerciality and promote.
The utility model content
Directly come the drawback of regulation voltage deviation scheme by the adjusting transformer tapping in the power transformer high-pressure side on load tap changer, the utility model proposes the fixing voltage deviation adjuster of a kind of major loop, thereby improved the reliability of electrical power distribution system, reduced failure rate.
The purpose of this utility model is to provide a kind of voltage deviation adjuster, directly do not carry out tap switching regulation voltage with switch in the high-pressure side of voltage transformer or the major loop of low-pressure side, have the reliability height, do not have electric arc when switching, governing speed is fast, good economy performance, maintenance is little and be easy to realize advantage such as intelligent automatic control, to realize reliable and practical supply power voltage bias adjustment.
Voltage deviation adjuster of the present utility model comprises: voltage clasfficiator T1, the variable connector matrix K 1～Kn, phase place switch unit and the electromagnetic coupler G that are made up of n switch; Wherein, the high-end low-pressure side that is connected in parallel on power transformer T of voltage clasfficiator T1; The end of variable connector matrix K 1～Kn links to each other with the classification tap of voltage clasfficiator T1 respectively; The low side of the other end of variable connector matrix K 1～Kn and voltage clasfficiator T1 is connected to the input of electromagnetic coupler G through the phase place switch unit; Electromagnetic coupler G is series at the primary side of power transformer T, and n is 〉=2 natural number.
The end of variable connector matrix K 1～Kn links to each other with the classification tap of voltage classification T1 respectively, selects different switch conductions, just obtains the coupled voltages of different sizes, by the conducting of switch, selects sizeable voltage.The phase place switch unit can change the phase place of voltage, makes coupled voltages identical or opposite with the phase place of line voltage.The utility model adopts the duplexure shunt voltage clasfficiator T1 in the low-pressure side of power transformer T, select suitable voltage by variable connector matrix K 1～Kn, select phase place through the phase place switch unit again, the sine voltage of adjustable size and phase variable is applied to the input of electromagnetic coupler G, coupling by electromagnetic coupler G changes the numerical value of the input voltage of (increase or reduce) power transformer T indirectly, thereby reaches the purpose of regulation voltage deviation.The utility model adopts the electromagnetic coupler of series connection to adjust the voltage of power transformer, and the major loop of power transformer is fixed, the switch contacts of the mechanical electric device action of having no backing, so system stability, and probability of malfunction is low, the cost performance height.
The classification tap of voltage clasfficiator T1 links to each other with demultiplexing matrix K switch 1～Kn respectively, selecting voltage swing, during diverter switch, the transition of each tap needs the time, makes the voltage of major loop beat greatly, and is not steady, electric current in the major loop causes induced voltage, thereby cause instantaneous overvoltage, it is dangerous to switch transient process, endangers very big.In order to address this problem, between variable connector matrix K 1～Kn and phase place switch unit, balancing transformer T2 is set, insert the end of balancing transformer T2 after the odd number end parallel connection of the other end of variable connector matrix K 1～Kn, insert the other end of balancing transformer T2 after the parallel connection of even number end, the low side of the intermediate ends of balancing transformer T2 and voltage clasfficiator T1 is connected to the input of electromagnetic coupler G through the phase place switch unit.The utility model makes voltage output steadily owing to adopt the other end at variable connector matrix K 1～Kn that balancing transformer T2 is set, and switch switches level and smooth, and fail safe improves.And, when diverter switch, balancing transformer T2 can so that in variable connector matrix K 1～Kn any adjacent bigger circulation of two switches unlikely generation of conducting simultaneously, and when the center-side output voltage of balancing transformer T2 is the conducting simultaneously of adjacent two switches half of potential difference.Like this, under the constant situation of number of switches, point of adjustment is more; Perhaps, under the constant situation of point of adjustment, can reduce the quantity of switch.
Electromagnetic coupler G of the present utility model adopts four port devices, perhaps adopts the five-port device.When electromagnetic coupler G is four port devices, the phase place switch unit comprises first to fourth phase place diverter switch, four switches, the output of the intermediate ends of balancing transformer T2 is connected to the input of electromagnetic coupler G through phase place diverter switch second and the 4th phase place diverter switch, and the low side of voltage clasfficiator T1 is connected to the input of electromagnetic coupler G through phase place diverter switch first and third phase position diverter switch.When electromagnetic coupler G is the five-port device, the input side that is electromagnetic coupler G is that the coupling coils of two groups of polyphones are when drawing as three ports, the phase place diverter switch can be reduced to the first and second phase place diverter switches, two switches, the intermediate ends of balancing transformer T2 is connected to the two-end-point of the input of electromagnetic coupler G respectively through the first and second phase place diverter switches, the low side of voltage clasfficiator T1 is connected to the intermediate point of the input of electromagnetic coupler G.
Voltage deviation adjuster of the present utility model can be the adjuster of three regulation voltages when linking, and also can be the adjuster of each phase independent regulation voltage.The adjuster of each phase independent regulation voltage can also be regulated the imbalance of three-phase voltage of electrical network except can regulating the line voltage deviation.
Voltage clasfficiator T1 of the present utility model can be autocoupling type, also can be isolated, to adapt to different application occasion needs.Voltage clasfficiator T1 is designed to when isolated, and primary side and the secondary side of adjuster and power transformer T will all be isolated.This moment, each component unit of adjuster did not just all have contacting of electricity with power supply and load, only was the magnetic field coupling, and this also needs under some application scenario.
Power transformer T can be the buck power transformer, also can be the boost type power transformer.For the buck power transformer, the primary side of power transformer T is the high-pressure side; For the boost type power transformer, the primary side of power transformer T is low-pressure side.For buck power transformer T, electromagnetic coupler G is series at the primary side (high-pressure side) of power transformer T, and from secondary side (low-pressure side) the shunt voltage clasfficiator T1 of power transformer T, carries out voltage deviation to regulate; For boost type power transformer T, electromagnetic coupler G is series at the primary side (low-pressure side) of power transformer T, and from primary side (low-pressure side) the shunt voltage clasfficiator T1 of power transformer T, carries out voltage deviation and regulate.
For buck power transformer T, when the voltage of its secondary side was the low pressure of 0.4KV, variable connector matrix K 1～Kn can select the air type contactor to make switch usually.When the adjustable side of power transformer T is high pressure, can select vacuum contactor to make switch.When requiring frequently dynamically to switch fast, can select solid-state switch.
The switch of variable connector matrix K 1～Kn and phase place switch unit adopts a kind of in hand switch, electromagnetic switch and the solid-state switch.Electromagnetic switch such as air type contactor and vacuum contactor etc., solid-state switch such as controllable silicon and solid-state relay etc.Control to the switch of variable connector matrix K 1～Kn and phase place switch unit can be taked manual mode; Also can automatically regulate control to the switch of variable connector matrix K 1～Kn and phase place switch unit by electrical quantity sensor and controllers such as voltage or electric current are set; Can also press the power communication stipulations by having computer hardware control platform and computer communication interface, carry out Long-distance Control by intelligent grid.
The beneficial effects of the utility model:
The utility model has adopted the primary side series electrical magnetic coupler at power transformer, coupled voltages by adjustable size and direction-agile and voltage on line side carry out homophase or the method that inversely adds realizes the adjusting of supply power voltage deviation then, and no matter this scheme does not all have the switch contacts that relies on mechanical electric device action at primary side or the secondary side of power transformer.Therefore, the reliability that voltage deviation is regulated is improved, and failure rate significantly reduces, and power supply grid will become very little because the regulating system fault causes interrupt probability, have higher performance.
Description of drawings
Fig. 1 be the output voltage of operation principle of the present utility model with the oscillogram of the variation of input voltage, wherein the oscillogram of (a) same-phase regulation voltage (b) is the oscillogram of antiphase regulation voltage;
System diagram when Fig. 2 is the buck power transformer for power transformer T among the embodiment one of voltage deviation adjuster of the present utility model;
Fig. 3 is the circuit diagram when power transformer T is the buck power transformer among the embodiment one of voltage deviation adjuster of the present utility model;
Fig. 4 is the system diagram when power transformer T is the boost type power transformer among the embodiment two of voltage deviation adjuster of the present utility model;
Fig. 5 is the circuit diagram when power transformer T is the boost type power transformer among the embodiment two of voltage deviation adjuster of the present utility model;
Fig. 6 is when electromagnetic coupler G is five-port among the embodiment three of voltage deviation adjuster of the present utility model, the part figure that the circuit of phase place switch unit connects;
Fig. 7 is control system schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, be described further by the utility model of embodiment.
Operation principle of the present utility model is based on as follows:
Uo=(Ui±Ug)/K
In the formula: the output voltage of Uo-power transformer T
The supply power voltage of Ui-electrical network
The Ug-coupled voltages
The voltage ratio (or turn ratio) of K-power transformer T
Change size and the polarity of the numerical value of coupled voltages Ug, then the increase of adjustable output voltage Uo and reducing.
1) make the phase place switch unit make coupled voltages Ug and line voltage Ui same-phase, when a certain switch of variable connector matrix K 1～Kn or certain two adjacent switch conducting, then generation is carried out with superimposed with the coupled voltages Ug of line voltage Ui identical polar, after power transformer T transformation, obtain the voltage bigger than Ui/K, output voltage U o is raise
Be ui=Uim Sin ω t
ｕg=Ugm?Sinωt
Output voltage uo=(Uim Sin ω t+Ugm Sin ω t)/K then
Wherein, uo is the instantaneous value of the output voltage of power transformer T
Ug is the instantaneous value of the output voltage of power transformer T
Ui is the instantaneous value of the supply power voltage of electrical network
ω is angular frequency
Ugm is the maximum of the output voltage of power transformer T
Uim is the maximum of the supply power voltage of electrical network
Or Uo=(Ui+Ug)/K
Its oscillogram is shown in Fig. 1 (a);
2) make the phase place switch unit make coupled voltages Ug and line voltage Ui antiphase, when a certain switch of variable connector matrix K 1～Kn or certain two adjacent switch conducting, then generation is inversely added with the coupled voltages Ug of line voltage Ui identical polar, after power transformer T transformation, obtain the voltage littler than Ui/K, output voltage U o is reduced
Be ui=Uim Sin ω t
ｕg=Ugm?Sin(ωt-180°)
Output voltage uo=[Uim Sin ω t+Ugm Sin (ω t-180 °) then]/K
Or Uo=(Ui-Ug)/K
Its oscillogram is shown in Fig. 1 (b);
3) when the conducting simultaneously of phase place switch unit, coupled voltages Ug=0, output voltage U o at this moment:
Uo=Ui/K
Namely be equivalent to the state that regulating circuit is not intervened.
Embodiment one
In the present embodiment, power transformer T is the buck power transformer, and electromagnetic coupler G is four port devices, and the phase place switch unit is made up of four switches of Ka～Kd.System diagram when power transformer T is the buck power transformer as shown in Figure 2, voltage-regulation unit 1 comprises variable connector matrix K 1～Kn and phase place switch unit.
As shown in Figure 3, the voltage deviation adjuster of present embodiment comprises: voltage clasfficiator T1, the variable connector matrix K 1～K4, phase place switch unit and the electromagnetic coupler G that are made up of four switches; Wherein, the high-end H of voltage clasfficiator T1 is connected in parallel on the low-pressure side of power transformer T, i.e. secondary side; The end of variable connector matrix K 1～K4 links to each other with the classification tap of voltage classification T1; Insert the end a of balancing transformer T2 after the other end parallel connection of variable connector matrix K 1 and K3, insert the other end b of balancing transformer T2 after the other end parallel connection of K2 and K4, the intermediate ends c of balancing transformer T2 is connected to input X and the Y of electromagnetic coupler G through the second and the 4th phase place diverter switch Kb and Kd, the low side L of voltage clasfficiator T1 through first and third phase position diverter switch Ka and Kc be connected to input X and the Y of electromagnetic coupler G; The output x of electromagnetic coupler G and y are series at the primary side of power transformer T.
The parameter of buck power transformer T: 10KV/0.4KV, 500KVA, Yyo connect; By circuit (phase in the three-phase) shown in Figure 3, the parameter of voltage clasfficiator T1 is: be respectively phase voltage 32.5V, 97.5V, 162.5V, 227.5V(line voltage is respectively 56.29V, 168.87V, 281.46V, 394.04V); If the primary side adjustable range of selecting power transformer T for ± 7%(is line voltage ± 700V, during phase voltage ± 404.16V), the coupled system that can calculate electromagnetic coupler G is that the input of 1:1.7765(electromagnetic coupler G is 227.5:404.16V with output ratio), if ignore the loss of balancing transformer T2 and electromagnetic coupler G, can calculate under the perfect condition voltage deviation to power transformer T accordingly.
Embodiment two
In the present embodiment, power transformer T is the boost type power transformer, and electromagnetic coupler G is four port devices, and the phase place switch unit is made up of four switches of Ka～Kd.System diagram when power transformer T is the buck power transformer as shown in Figure 4, voltage-regulation unit 1 comprises variable connector matrix K 1～Kn and phase place switch unit.
As shown in Figure 5, the voltage deviation adjuster of present embodiment comprises: voltage clasfficiator T1, the variable connector matrix K 1～Kn, phase place switch unit and the electromagnetic coupler G that are made up of four switches; Wherein, the high-end H of voltage clasfficiator T1 is connected in parallel on the low-pressure side of power transformer T, i.e. primary side; The end of variable connector matrix K 1～K4 links to each other with the classification tap of voltage classification T1; Insert the end a of balancing transformer T2 after the other end parallel connection of variable connector matrix K 1 and K3, insert the other end b of balancing transformer T2 after K2 and the K4 parallel connection, the intermediate ends c of balancing transformer T2 is connected to input X and the Y of electromagnetic coupler G through the second and the 4th phase place diverter switch Kb and Kd, the low side L of voltage clasfficiator T1 through first and third phase position diverter switch Ka and Kc be connected to input X and the Y of electromagnetic coupler G; The output x of electromagnetic coupler G and y are series at the primary side of power transformer T.
Embodiment three
In the present embodiment, electromagnetic coupler G is the five-port device, and the phase place switch unit is made up of the first and second phase place diverter switch Ka and two switches of Kb, and the connection of phase place switch unit in circuit as shown in Figure 6.The input side of electromagnetic coupler G is that the coupling coils of two groups of polyphones are when drawing as three ports, the intermediate ends c of balancing transformer T2 is connected to two-end-point X and the Y of the input of electromagnetic coupler G respectively through the first and second phase place diverter switch Ka and Kb, the low side L of voltage clasfficiator T1 is connected to the intermediate point O of the input of electromagnetic coupler G.
Can realize automatic control to variable connector matrix K 1～Kn and phase place switch unit according to the control system of Fig. 7.By the electrical quantity sensor to power supply grid and load-side, be transformed to weak electric signal, input electric weight IQ and output electric weight OQ are through sample circuit SC, analog-digital converter A/D converts digital signal to, be input to monolithic computer MCU or digital signal processor DSP and carry out computing, analysis and processing, and according to the control parameter of the set SU of human-computer dialogue, control command is removed to control variable connector matrix K 1～Kn and phase place switch unit by interface circuit IC.Display unit shows the information such as relevant electric weight of be correlated with control parameter, state, net side and load by LCD LCD.Protective circuit PC can make native system withdraw from regulatory function in abnormal conditions.Communication interface CI can insert the power communication network by communication protocol, carries out both-way communication, both can receive the instruction of power scheduling department again with the state of native system to the power scheduling Section report, and unified scheduling is carried out voltage deviation and regulated.
It should be noted that at last, the purpose of publicizing and implementing mode is to help further to understand the utility model, but it will be appreciated by those skilled in the art that: in the spirit and scope that do not break away from the utility model and appended claim, various substitutions and modifications all are possible.Therefore, the utility model should not be limited to the disclosed content of embodiment, and the claimed scope of the utility model is as the criterion with the scope that claims define.
Claims (10)
1. a voltage deviation adjuster is characterized in that, described voltage deviation adjuster comprises: voltage clasfficiator T1, the variable connector matrix K 1～Kn, phase place switch unit and the electromagnetic coupler G that are made up of n switch; Wherein, the high-end low-pressure side that is connected in parallel on power transformer T of described voltage clasfficiator T1; The end of described variable connector matrix K 1～Kn links to each other with the classification tap of voltage clasfficiator T1 respectively; The low side of the other end of described variable connector matrix K 1～Kn and voltage clasfficiator T1 is connected to the input of electromagnetic coupler G through the phase place switch unit; Described electromagnetic coupler G is series at the primary side of power transformer T, and n is 〉=2 natural number.
2. voltage deviation adjuster as claimed in claim 1, it is characterized in that, between described variable connector matrix K 1～Kn and phase place switch unit, balancing transformer T2 is set, insert the end of balancing transformer T2 after the odd number end parallel connection of the other end of described variable connector matrix K 1～Kn, insert the other end of balancing transformer T2 after the parallel connection of even number end, the low side of the intermediate ends of described balancing transformer T2 and voltage clasfficiator T1 is connected to the input of electromagnetic coupler G through the phase place switch unit.
3. voltage deviation adjuster as claimed in claim 2 is characterized in that, described electromagnetic coupler G adopts four port devices, perhaps adopts the five-port device.
4. voltage deviation adjuster as claimed in claim 3, it is characterized in that, described electromagnetic coupler G adopts four port devices, described phase place switch unit comprises first to fourth phase place diverter switch, the output of the intermediate ends of described balancing transformer T2 is connected to the input of electromagnetic coupler G through the second phase place diverter switch and the 4th phase place diverter switch, and the low side of described voltage clasfficiator T1 is connected to the input of electromagnetic coupler G through the first phase place diverter switch and third phase position diverter switch.
5. voltage deviation adjuster as claimed in claim 3, it is characterized in that, described electromagnetic coupler G adopts the five-port device, described phase place switch unit comprises the first and second phase place diverter switches, the intermediate ends of balancing transformer T2 is connected to the two-end-point of the input of electromagnetic coupler G respectively through the first and second phase place diverter switches, the low side of voltage clasfficiator T1 is connected to the intermediate point of the input of electromagnetic coupler G.
6. voltage deviation adjuster as claimed in claim 1 is characterized in that, described power transformer T is the buck power transformer, perhaps is the boost type power transformer; For the buck power transformer, the primary side of power transformer T is the high-pressure side, and for the boost type power transformer, the primary side of power transformer T is low-pressure side; For buck power transformer T, electromagnetic coupler G is series at the primary side of power transformer T, and from the secondary side shunt voltage clasfficiator T1 of power transformer T, carries out voltage deviation to regulate; For boost type power transformer T, electromagnetic coupler G is series at the primary side of power transformer T, and from the primary side shunt voltage clasfficiator T1 of power transformer T, carries out voltage deviation and regulate.
7. voltage deviation adjuster as claimed in claim 1 is characterized in that, the switch of variable connector matrix K 1～Kn and phase place switch unit adopts a kind of in hand switch, electromagnetic switch and the solid-state switch; Manual mode is taked in control to the switch of variable connector matrix K 1～Kn and phase place switch unit; Perhaps by electrical quantity sensor and controllers such as voltage or electric current are set, automatically the switch of variable connector matrix K 1～Kn and phase place switch unit is regulated control; Perhaps by having computer hardware control platform and computer communication interface, press the power communication stipulations, carry out Long-distance Control by intelligent grid.
8. voltage deviation adjuster as claimed in claim 6 is characterized in that, for buck power transformer T, when the voltage of its secondary side was the low pressure of 0.4KV, variable connector matrix K 1～Kn selected the air type contactor to make switch; When the adjustable side of power transformer T is high pressure, select vacuum contactor to make switch; When requiring frequently dynamically to switch fast, select solid-state switch.
9. voltage deviation adjuster as claimed in claim 1 is characterized in that, described voltage deviation adjuster is the adjuster of three regulation voltages when linking, or the adjuster of each phase independent regulation voltage.
10. voltage deviation adjuster as claimed in claim 1 is characterized in that, described voltage clasfficiator T1 adopts autocoupling type, perhaps adopts isolated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320143592 CN203193283U (en) | 2013-03-27 | 2013-03-27 | Voltage deviation regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320143592 CN203193283U (en) | 2013-03-27 | 2013-03-27 | Voltage deviation regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203193283U true CN203193283U (en) | 2013-09-11 |
Family
ID=49110113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320143592 Expired - Lifetime CN203193283U (en) | 2013-03-27 | 2013-03-27 | Voltage deviation regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203193283U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178527A (en) * | 2013-03-27 | 2013-06-26 | 刘志勇 | Voltage deviation adjustor |
| CN103928932A (en) * | 2014-04-30 | 2014-07-16 | 海尔海斯(西安)控制技术有限公司 | Low-voltage on-load voltage regulation device |
-
2013
- 2013-03-27 CN CN 201320143592 patent/CN203193283U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178527A (en) * | 2013-03-27 | 2013-06-26 | 刘志勇 | Voltage deviation adjustor |
| CN103178527B (en) * | 2013-03-27 | 2015-07-01 | 刘志勇 | Voltage deviation adjustor |
| CN103928932A (en) * | 2014-04-30 | 2014-07-16 | 海尔海斯(西安)控制技术有限公司 | Low-voltage on-load voltage regulation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201035433Y (en) | Energy bidirectional flowing voltage regulator | |
| CN104579070B (en) | Contactless on-load automatic regulating distribution transformer and the method for carrying out automatic Regulation | |
| CN103178527B (en) | Voltage deviation adjustor | |
| CN204205598U (en) | System saving electricity optimizes the automatic regulation voltage pressure stabilizing device of electric energy and equipment group thereof | |
| CN110535139B (en) | Broad width pressure regulating device | |
| CN203983006U (en) | Capacity and pressure regulating three-phase transformer | |
| CN203193283U (en) | Voltage deviation regulator | |
| CN203312823U (en) | Self-coupling voltage regulating type reactive compensation device | |
| CN103354361A (en) | Low-voltage three-phase load automation balancing device | |
| CN201910624U (en) | Electrical energy optimizing device | |
| CN202663316U (en) | Circuit with three common-grounded power supplies of high voltage alternating current, low voltage alternating current and low voltage direct current | |
| CN202260466U (en) | Low-voltage dynamic reactive power three-phase and single-phase mixed filtering compensation device | |
| CN210629108U (en) | Wide-width pressure regulating device | |
| CN203720692U (en) | Compensation circuit for 380 V high-capacity stabilized voltage supply | |
| CN203206127U (en) | Transformer control circuit of voltage regulator | |
| CN203014683U (en) | Household circuit structure capable of converting three-phase power into single-phase power | |
| CN202817886U (en) | Uninterruptible power source | |
| CN202196655U (en) | On-load voltage regulation amorphous alloy transformer | |
| CN201699422U (en) | Output circuit for three-phase power voltage stabilizer | |
| CN202068231U (en) | Standby power wiring structure with voltage regulating function used for station | |
| CN201830134U (en) | Frequency converter with bypass | |
| CN201699650U (en) | Electric machine voltage compensation control device for farmland water pump | |
| CN205121397U (en) | Contactless compensation alternating current voltage stabilizer based on PLC | |
| CN104124044A (en) | Capacity-adjusting and voltage-adjusting three-phase transformer | |
| CN204615638U (en) | A kind of the soft of high-voltage cascade frequency converter opens circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130911 Effective date of abandoning: 20150701 |
|
| RGAV | Abandon patent right to avoid regrant |