CN204205599U - A kind of electronic type feeder line on-load voltage regulating device - Google Patents
A kind of electronic type feeder line on-load voltage regulating device Download PDFInfo
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Abstract
The utility model provides a kind of electronic type feeder line on-load voltage regulating device, this device comprises: get energy side rectifier, energy regenerative side inverter, energy regenerative isolating transformer and intelligent controller, the side windings in series of energy regenerative isolating transformer is connected on electrical network end feeder line, get and can side rectifier and energy regenerative side inverter be connected in series, intelligent controller respectively with get can side rectifier be connected with energy regenerative side inverter, described device also comprises gets energy transformer, get transformer to be step-down transformer, and the high-pressure side of getting energy transformer is connected on load side feeder line, low-pressure side and described the getting of getting energy transformer can be connected in series by side rectifier, to reduce rectifier input voltage, thus reduce the requirement of withstand voltage getting energy side rectifier and energy regenerative side inverter device, the easy type selecting of device, reduce costs.
Description
Technical field
The utility model relates to electric power system for distribution technique field, particularly relates to a kind of electronic type feeder line on-load voltage regulating device.
Background technology
Due to China's part electrical network, especially rural power grids, circuit is longer, wire diameter is comparatively thin, and along with the fluctuation of load, voltage ripple of power network is comparatively large, affects reliable, efficient, the economical operation of load.Therefore need to regulate line voltage, ensure that the scope of mains supply voltage maintains in the range of operation of load needs.
Traditional mechanical type has a grade voltage regulating mode to be divided into: 1. capacitance reactive compensation; 2. without excitation No-load changer; 3. be with excitation to have the pressure regulation of carrier aircraft tool many gears; 4. based on the on-load voltage regulation of thyristor.Mechanical type has grade voltage regulating mode regulation precision low, low-response, and mechanical contact wearing and tearing are large, and failure rate is high, cannot realize continuous voltage regulating.
The deficiency of grade voltage regulating mode is had in order to overcome traditional mechanical type, there is electronic pressure regulating mode, i.e. contactless stepless pressure regulation, mainly utilize power electronic device to convert line voltage, compensate the voltage falling part or rising part again, thus realize the electrodeless adjustment of line voltage.But large, the humorous wave height of these device volumes, cost are high, power supply department cannot remote monitoring.
As Chinese patent 200720106269 discloses a kind of voltage regulator of energy in bidirectional flow, dynamic regulator is directly connected in single-phase 220V electrical network, bus 312V, the power electronic device selected at least more than 450V, bus capacitor is also at more than 400V, and cause cost higher like this, volume is larger.Rectifier side only has L filtering, and the harmonic wave injecting load side is comparatively large, affects the normal work of power consumption equipment.When bucking voltage is lower, modulate smaller, it is higher that inverter exports PWM higher harmonic content, and LC filter is placed on feeder line simultaneously, and high order harmonic component all flows through series compensation transformer Tr, causes its loss large, temperature rise, require high to radiating condition.When device breaks down, failed equipment cannot be excised.
For another example Chinese patent 200620108454 discloses a kind of Contactless stepless load type potential regulator, and by-pass switch is parallel to the secondary group two ends of series compensation transformer, requires that the electric current flow through is load current, and electric current is comparatively large, and by-pass switch cost is higher.Main transformer T1 exports 400VAC, and high for device components and parts requirement of withstand voltage, cost is also higher.Three-phase PWM side reactive filter, causes the harmonic wave injecting load side higher, affects the normal operation of power consumption equipment.
In addition, along with the development of intelligent grid, the safe operation for the power transformer of remote districts and electric device monitors and proposes requirement, and tradition relies on manpower to carry out patrolling and examining time-consuming, effort and consumption wealth.
Therefore, a kind of electronic type feeder line on-load voltage regulating device is needed badly to solve the problems of the technologies described above.
Utility model content
The utility model is for above shortcomings in prior art, a kind of electronic type feeder line on-load voltage regulating device is provided, in order to solve the problem that the high volume brought of power electronic device requirement of withstand voltage is large, cost is high, inject the problem that the high series compensation transformer loss brought of harmonic wave of load is large, and the problem of monitoring grid equipment running status inconvenience.
The utility model, for solving the problems of the technologies described above, adopts following technical scheme:
The utility model provides a kind of electronic type feeder line on-load voltage regulating device, comprise: get energy side rectifier, energy regenerative side inverter, energy regenerative isolating transformer and intelligent controller, the side windings in series of energy regenerative isolating transformer is connected on electrical network end feeder line, get and can side rectifier and energy regenerative side inverter be connected in series, intelligent controller respectively with get can side rectifier be connected with energy regenerative side inverter, it is characterized in that, described device also comprises gets energy transformer, described getting can transformer be step-down transformer, and described in get and can the high-pressure side of transformer be connected on load side feeder line, described get can transformer low-pressure side with described get energy side rectifier be connected in series.
Further, described device also comprises the LC sinusoidal filter being arranged at and getting energy side rectifier side, one LC sinusoidal filter can side rectifier and described getting can the low-pressure side of transformer be connected in series with described getting respectively, can the pulse width modulation (PWM) high order harmonic component that exports of side rectifier in order to get described in filtering.
Further, described device also comprises the soft initiator be connected with described intelligent controller, and described soft initiator is connected in series with a described LC sinusoidal filter and described low-pressure side of getting energy transformer respectively.
Preferably, described soft initiator comprises soft start resistance and switch, and described soft start resistance is connected with described switch in parallel, and the control command that described switch can send according to described intelligent controller is opened or closed.
Further, described device also comprises the 2nd LC sinusoidal filter being arranged at energy regenerative side inverter side, 2nd LC sinusoidal filter is connected in series with the two ends of the opposite side winding of described energy regenerative side inverter and described energy regenerative isolating transformer respectively, the pulse width modulation (PWM) high order harmonic component exported in order to energy regenerative side inverter described in filtering.
Further, described device also comprises by-pass switch, described by-pass switch is connected in the two ends of the opposite side winding of described energy regenerative isolating transformer, and be connected with described intelligent controller, the control signal of the access that can send according to described intelligent controller or excision regulator, opens or closes.
Preferably, described energy regenerative isolating transformer is 1: 1 isolating transformer.
Further, described device also comprises remote monitor, described remote monitor is connected with Terminal Server Client with intelligent controller, for obtaining the operational factor of described electronic type feeder line on-load voltage regulating device from intelligent controller, and the operational factor got is sent to Terminal Server Client, and, receive the access that Terminal Server Client sends or the control signal of excising regulator, and described control signal is sent to intelligent controller.
The utility model has following beneficial effect:
1, being used for getting of step-down by access in parallel on load side feeder line can transformer, reduces rectifier input voltage, thus reduces that get can the requirement of withstand voltage of side rectifier and energy regenerative side inverter device, and the easy type selecting of device, reduces costs;
2, owing to reducing the voltage got on energy side rectifier and energy regenerative side inverter, modulation ratio increases, PWM pulsewidth is wide, energy regenerative side inverter exports PWM (Pulse WidthModulation, pulse width modulation) waveform higher harmonic content is few, and the bandwidth requirement for LC filter is lower; And get can inner IGBT or the MOSFET loss of side rectifier and energy regenerative side inverter little, temperature rise amplitude is little, and can improve carrier frequency, the variable volume of LC filter is little simultaneously;
3, by by-pass switch being connected in the two ends of the side winding of connection the 2nd LC sinusoidal filter of energy regenerative isolating transformer, reduce the requirement of the current capacity of by-pass switch, the easy type selecting of device, can reduce the volume of regulator;
4, by arranging remote monitor, the on-the-spot power equipment running status of remote monitoring can be realized, and can fault fast positioning, diagnosis be carried out.
Accompanying drawing explanation
The block diagram of the electronic type feeder line on-load voltage regulating device that Fig. 1 provides for the utility model embodiment;
The structural representation of the single-phase 220V electronic type feeder line on-load voltage regulating device that Fig. 2 provides for the utility model embodiment;
The structural representation of the single-phase 380V electronic type feeder line on-load voltage regulating device that Fig. 3 provides for the utility model embodiment;
The boosting compensation vector figure that Fig. 4 provides for the utility model embodiment;
The drop compensation polar plot that Fig. 5 provides for the utility model embodiment.
Marginal data:
1, getting can side rectifier 2, energy regenerative side inverter 3, energy regenerative isolating transformer
4, intelligent controller 5, getting can transformer 6, a LC filter
7, the 2nd LC filter 8, soft initiator 9, by-pass switch
10, remote monitor 41, digital signal processor DSP
Embodiment
For making those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The utility model provides a kind of electronic type feeder line on-load voltage regulating device, automatically output voltage and the energy flow direction of energy regenerative side inverter can be adjusted according to the difference between load side voltage and given voltage, compensate and fall or the voltage of rising part, load side voltage is made to reach given voltage, ensure the normal power supply requirement of power consumption equipment, and high, the humorous wave height of pressure ball that solves that existing electronic type regulator volume is large, components and parts are withstand voltage, series compensation transformer loss is large, cost is high, without the deficiency of remote monitoring function.
As shown in Figure 1, the utility model embodiment provides a kind of electronic type feeder line on-load voltage regulating device, comprise: get energy side rectifier 1, energy regenerative side inverter 2, energy regenerative isolating transformer 3 and intelligent controller 4, the side windings in series of energy regenerative isolating transformer 3 is connected on electrical network end Uin feeder line, get and can be connected in series with energy regenerative side inverter 2 by side rectifier 1, intelligent controller 4 respectively with get can side rectifier 1 be connected with energy regenerative side inverter 2, can according to the voltage difference between load side Uo voltage and given voltage, control the operating state of getting energy side rectifier 1 and energy regenerative side inverter 2, thus the voltage of Load adjustment end Uo.
Described device also comprises gets energy transformer 5, and getting transformer 5 to be step-down transformer, and the high-pressure side of getting energy transformer 5 is connected on load side Uo feeder line, gets the low-pressure side of energy transformer 5 and gets and can be connected in series by side rectifier 1.
By parallel connection access step-down transformer (namely getting energy transformer 5) on load side feeder line, reduce rectifier input voltage, thus reduce the requirement of withstand voltage getting energy side rectifier and energy regenerative side inverter, the easy type selecting of device, reduces costs.
Preferably, energy regenerative isolating transformer 3 can select 1:1 isolating transformer, without the need to boosting or step-down to electrical network terminal voltage, makes the volume of energy regenerative isolating transformer less.
Preferably, described electronic type feeder line on-load voltage regulating device can also comprise the LC sinusoidal filter 6 being arranged at and getting energy side rectifier 1 side, one LC sinusoidal filter 6 is respectively with get can side rectifier 1 and get and can the low-pressure side of transformer 1 be connected in series, PWM (Pulse Width Modulation, the pulse width modulation) high order harmonic component of energy side rectifier 1 output is got in order to filtering.
Preferably, described electronic type feeder line on-load voltage regulating device can also comprise the 2nd LC sinusoidal filter 7 being arranged at energy regenerative side inverter 2 side, 2nd LC sinusoidal filter 7 is connected in series with the two ends of the opposite side winding of energy regenerative side inverter 2 and energy regenerative isolating transformer 3 respectively, the PWM high order harmonic component exported in order to filtering energy regenerative side inverter 2.
One LC filter 6 is identical with the 2nd LC filter 7 structure, can filtering PWM high order harmonic component, from LC filter output voltage and current waveform close to sinusoidal wave, thus reduces the harmonic wave injecting energy regenerative isolating transformer 3 and load side Uo.
Further, in order to prevent the impulse current that produces in electronic type feeder line on-load voltage regulating device start-up course excessive, described electronic type feeder line on-load voltage regulating device can also comprise soft initiator, soft initiator 8 is connected in series with a LC sinusoidal filter 6 and the low-pressure side of getting energy transformer 5 respectively, and is connected with intelligent controller 8.
Preferably, as shown in Figure 2, soft initiator 8 can comprise soft start resistance R1 and K switch M1, soft start resistance R1 and K switch M1 is connected in parallel, and one end of soft start resistance R1 and K switch M1 and a LC filter 6 are connected in series, the other end of soft start resistance R1 and K switch M1 is connected in series with the one end of the low-pressure side of getting energy transformer 5.The control command that K switch M1 can send according to intelligent controller 4 is opened or is closed.
When electronic type feeder line on-load voltage regulating device starts, charged to the bus capacitor C2 got in energy the side rectifier 1 and bus capacitor C3 in energy regenerative side inverter 2 by soft start resistance R1, if intelligent controller 4 judges charging complete, namely the voltage of bus capacitor C2 and bus capacitor C3 both sides reaches 90% of the input terminal voltage peak value getting energy side rectifier 1, then by switch driving circuit (i.e. KM1 drive circuit), control switch KM1 closes, thus short circuit soft start resistance R1, prevent impulse current in resistance-type feeder line on-load voltage regulating device start-up course excessive.
Further, as shown in Figure 1, described electronic type feeder line on-load voltage regulating device also comprises by-pass switch 9, and by-pass switch 9 is connected in the two ends of the opposite side winding of energy regenerative isolating transformer 3, and is connected with described intelligent controller.That is, by-pass switch 9 is connected in the two ends of the side winding that energy regenerative isolating transformer 3 is connected with the 2nd LC filter 7.
The contact of by-pass switch 9 is normally closed, when electronic type feeder line on-load voltage regulating device normally starts, get the bus capacitor C2 in energy side rectifier 1 and the bus capacitor C3 charging complete in energy regenerative side inverter 2, after K switch M1 is closed, after intelligent controller 4 time delay a period of time, send the control signal of access regulator to by-pass switch 9, open to control by-pass switch 9.When electronic type feeder line on-load voltage regulating device breaks down, when this electronic type feeder line on-load voltage regulating device not dead electricity, intelligent controller 4 sends the control signal (control signal of this excision regulator manually can be inputted to intelligent controller 4 by operator) of excision regulator to by-pass switch 9, with closes bypass switch 9, this electronic type feeder line on-load voltage regulating device is isolated from network system, then network system no longer has voltage regulation function, is powered to load side by electrical network.When electronic type feeder line on-load voltage regulating device breaks down, when this electronic type feeder line on-load voltage regulating device dead electricity, by-pass switch 9 also can close automatically, is powered to load side by electrical network.
Below in conjunction with Fig. 2, the internal structure of intelligent controller 4 is described in detail.As shown in Figure 2, intelligent controller 4 can comprise: digital signal processor (digital signalprocessor, DSP) 41, current detector CT3, voltage sampling circuit, current sampling circuit, signal fault processing unit (not illustrating in figure), soft initiator drive (KM1 driving) circuit and by-pass switch to drive (K1 driving) circuit.
Voltage sampling circuit comprises: energy regenerative side inverter busbar voltage sample circuit, electrical network terminal voltage sample circuit, energy regenerative side voltage sampling circuit, getting can side rectifier busbar voltage sample circuit, load side voltage sampling circuit and get can side voltage sampling circuit.
Current sampling circuit comprises: electrical network end current sampling circuit, energy regenerative side inverter bus current sample circuit and get can side rectifier bus current sample circuit.
Preferably, intelligent controller 4 can adopt metal chassis, makes its internal circuit be in good electromagnetic environment, adopt touch key, carried out setting and the manual operation of parameter by touch key, adopt numeral method, and reserved RS232/RS485 communication interface.DSP41 can select the DSP of 16, such as TMS320LF1407A.
The fault-signal processing unit of intelligent controller 4 can the fault-signal that sends of side rectifier 1 and energy regenerative side inverter 2 according to getting, judge rectification side and inverter side overcurrent, overvoltage, short circuit, DC bus is under-voltage, overvoltage, load side is under-voltage, overvoltage, the fault such as rectifier and inverter short circuit, for three-phase system, fault-signal processing unit can also judge the fault such as imbalance of three-phase voltage, three-phase current unbalance.The judgement of fault-signal processing unit to various fault belongs to prior art, does not repeat them here.
Described electronic type feeder line on-load voltage regulating device can realize boosting and the step-down of load side voltage, and energy can two-way flow in this regulator.Concrete, intelligent controller 4, by the voltage of load side voltage sampling circuit sampling load side, according to voltage and the default given voltage of load side, judges boosting or step-down, by the voltage control of load side in given range.
Simultaneously, intelligent controller 4 is by electrical network terminal voltage sampling circuit samples electrical network terminal voltage phase place, by electrical network end current sampling circuit and current detector CT3 sampling electrical network end current phase, control energy regenerative side inverter 2, feedthrough voltage phase place and electric network voltage phase homophase to make, and control energy regenerative side inverter 2, to make output voltage and the output current phase of energy regenerative side inverter 2, with ensure this electronic type feeder line on-load voltage regulating device the energy that supplements all for active power.In addition, intelligent controller 4 according to the power capacity of this regulator, can also send reactive power, to improve the power factor of electrical network end.
Further, described electronic type feeder line on-load voltage regulating device can also comprise remote monitor 10, remote monitor 10 is connected with Terminal Server Client (not illustrating in figure) with intelligent controller 4, for obtaining the operational factor of described electronic type feeder line on-load voltage regulating device from intelligent controller 4, and the operational factor got is sent to Terminal Server Client, and, receive the access that Terminal Server Client sends or the control signal of excising regulator, and described control signal is sent to intelligent controller 4.Intelligent controller 4 according to this access or the control signal of excising regulator, can drive by-pass switch 9 to open by K1 drive circuit or closes, thus realizes this regulator access electrical network or excise from electrical network.
The operational factor of described electronic type feeder line on-load voltage regulating device can comprise: the input voltage of regulator, input current, output voltage, output current, feeder line power factor, active power, reactive power, regulator running status (boosting, step-down), energy flow direction and bucking voltage.
It should be noted that, intelligent controller 4 can also obtain the operational factor of other controller switching equipments in electrical network, accordingly, remote monitor 10 also can obtain the operational factor of other controller switching equipments from intelligent controller 4, and sends to Terminal Server Client to monitor in real time for power supply department.
Remote monitor 10 can adopt general packet radio service technology (GeneralPacket Radio Service) to realize distributed monitoring.User can monitor the running status of other equipment on described regulator, energy regenerative isolating transformer and feeder line by Terminal Server Client, and remote control regulator accesses electrical network and excises from electrical network.In addition, power supply department can monitor the on-line operation state of other controller switching equipments of multiple stage on feeder line simultaneously, facilitates fault location and diagnosis.
Get energy side rectifier 1 identical with the structure of energy regenerative side inverter 2, below in conjunction with Fig. 2 and Fig. 3, the structure of getting energy side rectifier 1 and energy regenerative side inverter 2 in the electronic type feeder line on-load voltage regulating device of single-phase 220V and three-phase 380V is described in detail.
As shown in Figure 2, in the electronic type feeder line on-load voltage regulating device of single-phase 220V, get and can comprise 4 transistors (S1, S2, S3, S4), bus capacitor C2, discharge resistance R2, Hall element CT1 by side rectifier 1, each coupled in parallel 1 fly-wheel diode, 4 transistors adopt H bridge connected mode, bus capacitor C2, discharge resistance R2 and described 4 transistors S1, S2, S3, S4 are connected in parallel, the interchange of H bridge exports wherein one end and, through Hall element CT1, detects electric current by electromagnetic coupled.
Preferably, transistor S1, S2, S3, S4 can select metal-oxide half field effect transistor MOSFET or insulated gate bipolar transistor IGBT.
The structure of the energy regenerative side inverter 2 in the electronic type feeder line on-load voltage regulating device of single-phase 220V is identical with the structure of getting energy side rectifier 1 in the electronic type feeder line on-load voltage regulating device of single-phase 220V, does not repeat them here.
As shown in Figure 3, in the electronic type feeder line on-load voltage regulating device of three-phase 380V, get and can comprise 6 transistors, bus capacitor C2, discharge resistance R2, Hall element (not illustrating in figure), each coupled in parallel 1 fly-wheel diode by side rectifier 1.6 transistors adopt three-phase half-bridge topology mode to connect, and bus capacitor C2, discharge resistance R2 are connected with described 6 coupled in parallel, and 2 ends in three ac output ends of three-phase half-bridge, through Hall element, detect electric current by electromagnetic coupled.
The structure of the energy regenerative side inverter 2 in the electronic type feeder line on-load voltage regulating device of three-phase 380V is identical with the structure of getting energy side rectifier 1 in the electronic type feeder line on-load voltage regulating device of three-phase 380V, does not repeat them here.
Below in conjunction with Fig. 2, for the electronic type feeder line on-load voltage regulating device of single-phase 220V, the operation principle of this electronic type feeder line on-load voltage regulating device and the course of work are described in detail.
As shown in Figure 2, after electronic type feeder line on-load voltage regulating device normally starts, electrical network terminal voltage sample circuit and load side voltage sampling circuit by high-barrier from, the voltage of difference sampling electrical network end and load side, send to DSP41 through AD conversion, the voltage of the load side that sampling obtains by DSP41 is compared with the given voltage preset.
If judge, load side voltage is less than given voltage, the difference of given voltage and load side voltage is+Δ U1, then this regulator needs boosting, and namely intelligent controller 4 controls to get and can work in rectification state by side rectifier 1, and intelligent controller 4 sends SPWM (SinusoidalPulse Width Modulation, Using Sinusoidal Pulse Width Modulation) ripple, by internal drive circuits driving transistors S1, S2, S3, S4, gets and can maintain the constant of DC bus-bar voltage by side rectifier 1.Intelligent controller 4 controls energy regenerative side inverter 2 and works in inverter mode simultaneously, send SPWM ripple, by internal drive circuits driving transistors S5, S6, S7, S8, energy regenerative side inverter 2 exports effective value and equals-the PWM waveform of Δ U1, compensate load side voltage-phase identical with electrical network terminal voltage phase place, make load side voltage U o reach given voltage, now energy flows from left to right in regulator.The principle that boosting compensates refers to Fig. 4, wherein, and Δ U and Δ U1 equal and opposite in direction, phase 180 °.In Fig. 4, Uo is the voltage after compensating, Uin electrical network terminal voltage (be equivalent to and compensate preload terminal voltage), and IA is electrical network end electric current, and IA1 is compensation afterload end electric current, Ia regulator offset current,
for compensating preload end power factor (PF),
for compensating afterload end power factor (PF).
If judge, load side voltage is greater than given voltage, the difference of given voltage and load side voltage is-Δ U1, then this regulator needs step-down, namely intelligent controller 4 controls to get and can work in inverter mode by side rectifier 1, and intelligent controller 4 sends SPWM ripple, by internal drive circuits driving transistors S1, S2, S3, S4, get and can maintain the constant of DC bus-bar voltage by side rectifier.Intelligent controller 4 controls energy regenerative side inverter 2 and works in rectification state simultaneously, send SPWM ripple, by internal drive circuits driving transistors S5, S6, S7, S8, energy regenerative side inverter 2 exports effective value and equals+the PWM waveform of Δ U1, compensate load side voltage-phase identical with electrical network terminal voltage phase place, make load side voltage U o reach given voltage, now energy right-to-left flowing in regulator.The principle of drop compensation refers to Fig. 5.
For the electronic type feeder line on-load voltage regulating device of single-phase 220V, consider bucking voltage 20%, then electrical network minimum voltage is 176V, need the maximum voltage 44V compensated, device stays certain allowance, and maximum bucking voltage presses 60V design, DC bus-bar voltage 85V, consider peak voltage, the transistor got in energy side rectifier 1 and energy regenerative side inverter 2 can select the 2SK3602-01 (150V, 23A) of FUJI.Bus capacitor can select sea ECS2CBZ222M, river (160V, 2200uF).The Hall element of rectifier and inverter internal can select the L18P015D15 (15A) of Tamura.The DTU (preferred F2103) that remote monitor 10 can adopt Xiamen four to believe, utilizes mobile communications network, realizes the wireless transmission of data.
The electronic type feeder line on-load voltage regulating device of three-phase 380V to realize principle identical with single-phase 220V, do not repeat them here, the difference of three-phase 380V and single-phase 220V is: energy regenerative isolating transformer 3 is three single-phase transformers, connect into hub-and-spoke configuration, the electric capacity C of a LC filter 6 and the 2nd LC filter 7 connects into hub-and-spoke configuration.
Electronic type feeder line on-load voltage regulating device of the present utility model adopts power electronic device, achieves device mechanical contact, continuously automatic Regulation, energy in bidirectional flow, by boosting or step-down, regulate load side voltage, make it in given range, ensure the normal operation of power consumption equipment.By-pass switch is connected in the winding two ends of the side that energy regenerative isolating transformer is connected with LC sinusoidal filter, and parts selection is easy, and regulator volume is little.In addition, can be realized remote monitoring and the wireless transmission of field equipment data by remote monitor, it is long to can be applicable to relatively regional transmission line, and the rural power grids that wire diameter is thin and supply load fluctuate large occasion.
Be understandable that, the illustrative embodiments that above execution mode is only used to principle of the present utility model is described and adopts, but the utility model is not limited thereto.For those skilled in the art, when not departing from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement are also considered as protection range of the present utility model.
Claims (8)
1. an electronic type feeder line on-load voltage regulating device, comprise: get energy side rectifier, energy regenerative side inverter, energy regenerative isolating transformer and intelligent controller, the side windings in series of energy regenerative isolating transformer is connected on electrical network end feeder line, get and can side rectifier and energy regenerative side inverter be connected in series, intelligent controller respectively with get can side rectifier be connected with energy regenerative side inverter, it is characterized in that, described device also comprises gets energy transformer, described getting can transformer be step-down transformer, and described in get and can the high-pressure side of transformer be connected on load side feeder line, described get can transformer low-pressure side with described get energy side rectifier be connected in series.
2. device as claimed in claim 1, it is characterized in that, described device also comprises the LC sinusoidal filter being arranged at and getting energy side rectifier side, one LC sinusoidal filter can side rectifier and described getting can the low-pressure side of transformer be connected in series with described getting respectively, can the pulse width modulation (PWM) high order harmonic component that exports of side rectifier in order to get described in filtering.
3. device as claimed in claim 2, it is characterized in that, described device also comprises the soft initiator be connected with described intelligent controller, and described soft initiator is connected in series with a described LC sinusoidal filter and described low-pressure side of getting energy transformer respectively.
4. device as claimed in claim 3, it is characterized in that, described soft initiator comprises soft start resistance and switch, and described soft start resistance is connected with described switch in parallel, and the control command that described switch can send according to described intelligent controller is opened or closed.
5. device as claimed in claim 1, it is characterized in that, described device also comprises the 2nd LC sinusoidal filter being arranged at energy regenerative side inverter side, 2nd LC sinusoidal filter is connected in series with the two ends of the opposite side winding of described energy regenerative side inverter and described energy regenerative isolating transformer respectively, the pulse width modulation (PWM) high order harmonic component exported in order to energy regenerative side inverter described in filtering.
6. device as claimed in claim 1, it is characterized in that, described device also comprises by-pass switch, described by-pass switch is connected in the two ends of the opposite side winding of described energy regenerative isolating transformer, and be connected with described intelligent controller, the control signal of the access that can send according to described intelligent controller or excision regulator, opens or closes.
7. device as claimed in claim 1, it is characterized in that, described energy regenerative isolating transformer is 1: 1 isolating transformer.
8. the device as described in any one of claim 1-7, it is characterized in that, described device also comprises remote monitor, described remote monitor is connected with Terminal Server Client with intelligent controller, for obtaining the operational factor of described electronic type feeder line on-load voltage regulating device from intelligent controller, and the operational factor got is sent to Terminal Server Client, and, receive the access that Terminal Server Client sends or the control signal of excising regulator, and described control signal is sent to intelligent controller.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655990A (en) * | 2015-03-16 | 2015-05-27 | 贵州电力试验研究院 | Medium and low-voltage power distribution network simulation system based on energy feedback |
| CN106160506A (en) * | 2016-08-18 | 2016-11-23 | 国家电网公司 | Novel low-voltage increasing apparatus and collocation method |
| CN106953333A (en) * | 2017-05-13 | 2017-07-14 | 深圳国电粤能节能科技有限公司 | A kind of intelligence relaying supply unit and a kind of closed-loop feed-back type voltage control method |
| CN106981927A (en) * | 2017-05-13 | 2017-07-25 | 深圳国电粤能节能科技有限公司 | Intelligence relaying power center control system for low pressure long-distance transmissions |
| CN107437899A (en) * | 2017-09-13 | 2017-12-05 | 上海交通大学 | The sinusoidal single-phase AC DC translation circuits of net stream |
| CN107872060A (en) * | 2016-09-27 | 2018-04-03 | 新能动力（北京）电气科技有限公司 | A kind of AC stabilizer |
| CN111111077A (en) * | 2020-01-16 | 2020-05-08 | 北京紫光新锐科技发展有限公司 | Automatic fire-fighting inspection control equipment and method |
| US11735923B2 (en) | 2020-07-28 | 2023-08-22 | Eaton Intelligent Power Limited | Voltage regulation device that includes a converter for harmonic current compensation and reactive power management |
| US11747841B2 (en) | 2018-08-20 | 2023-09-05 | Eaton Intelligent Power Limited | Current control apparatus |
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2014
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655990A (en) * | 2015-03-16 | 2015-05-27 | 贵州电力试验研究院 | Medium and low-voltage power distribution network simulation system based on energy feedback |
| CN106160506A (en) * | 2016-08-18 | 2016-11-23 | 国家电网公司 | Novel low-voltage increasing apparatus and collocation method |
| CN107872060A (en) * | 2016-09-27 | 2018-04-03 | 新能动力（北京）电气科技有限公司 | A kind of AC stabilizer |
| CN106953333A (en) * | 2017-05-13 | 2017-07-14 | 深圳国电粤能节能科技有限公司 | A kind of intelligence relaying supply unit and a kind of closed-loop feed-back type voltage control method |
| CN106981927A (en) * | 2017-05-13 | 2017-07-25 | 深圳国电粤能节能科技有限公司 | Intelligence relaying power center control system for low pressure long-distance transmissions |
| CN107437899A (en) * | 2017-09-13 | 2017-12-05 | 上海交通大学 | The sinusoidal single-phase AC DC translation circuits of net stream |
| US11747841B2 (en) | 2018-08-20 | 2023-09-05 | Eaton Intelligent Power Limited | Current control apparatus |
| CN111111077A (en) * | 2020-01-16 | 2020-05-08 | 北京紫光新锐科技发展有限公司 | Automatic fire-fighting inspection control equipment and method |
| US11735923B2 (en) | 2020-07-28 | 2023-08-22 | Eaton Intelligent Power Limited | Voltage regulation device that includes a converter for harmonic current compensation and reactive power management |
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