CN207218249U - A kind of intelligent balance pressure regulation harmonic elimination comprehensive treatment device - Google Patents
A kind of intelligent balance pressure regulation harmonic elimination comprehensive treatment device Download PDFInfo
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- CN207218249U CN207218249U CN201720516192.0U CN201720516192U CN207218249U CN 207218249 U CN207218249 U CN 207218249U CN 201720516192 U CN201720516192 U CN 201720516192U CN 207218249 U CN207218249 U CN 207218249U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The utility model discloses a kind of intelligent balance pressure regulation harmonic elimination comprehensive treatment device, including：Master controller, its voltage sampling port are connected to the power taking pressure side of three phase network, and current acquisition end connects the obtaining current end of three phase network；Voltage regulating module, three voltage regulating modules access a phase line of the three phase network by the first A.C. contactor respectively, and first A.C. contactor is connected with the master controller；And static reacance generator, its sampling end are connected with the master controller, regulation output end accesses the three phase network.The utility model pin uses new logic control system and structure, realizes and carries out comprehensive intelligent improvement to taiwan area three-phase imbalance, taiwan area end low-voltage, two-way dynamic compensation output, harmonic wave interference.
Description
Technical field
Low-voltage power quality harnessed synthetically technical field is the utility model is related to, more particularly to a kind of intelligent balance pressure regulation
Harmonic elimination comprehensive treatment device.
Background technology
In power system, low-voltage taiwan area tri-phase unbalance factor is to weigh the important finger of low-voltage unit-area management technical merit
Mark, this taiwan area loss situation also is reflected from side, end mass quality also have impact on residential electricity consumption quality in addition, because of us
The industrialization of the country develops and the raising of living standards of the people, and various electrical equipments and household electrical appliance are universal and complicated, inductive load
Increase and used with nonlinear load so that power factor is relatively low, harmonic content increase, and China's power network due to by daily load,
The influence of the factors such as season load variations, radius of electricity supply, power load distributing, often causes line voltage distribution to have a greater change, electricity
Press through it is low can cause equipment undercapacity or work it is abnormal, overtension can influence the safety of electrical equipment again.Although taiwan area
In design at the beginning due to the unreasonable and uncertainty of user power utilization behavior of sharing of load, it is uneven that serious three-phase can be produced
Weighing apparatus problem, three-phase imbalance can cause distribution transformer and line loss increase.Quality of voltage and three-phrase burden balance are power networks
One important rigid index of the existing examination of company, and the thing that each branch office is extremely urgent.
Adjusted for three-phase imbalance, main at present use is manual adjustment load and automatic phase-change switch.It is wherein artificial
Manual phase modulation efficiency is low, it is necessary to have a power failure to taiwan area, influences resident's electricity consumption, and uncertain due to user power utilization
Property, manual phase modulation regular can not be carried out, effect is very undesirable；Phase-change switch is higher to line requirements, and mount point must be selected
Select in three-phase four-wire system place, but most of taiwan area is all uniline, and also the actual commutation number of phase-change switch is considerably less, most
It is no more than 3 times within more one days, is lagged for frequent unbalance response, effect is undesirable.
Low-voltage circuit automatic voltage regulator is a kind of longer exclusively for line powering radius in the market, and line footpath is thin, circuit
The big taiwan area of the loss of voltage and the low-voltage controlling device designed.It is mainly by groups such as compensator transformer, controller, contactors
Into when line voltage distribution is too low, controller control contactor acts switching compensator transformer, and liter is compensated to line voltage distribution
Pressure.
Low-voltage circuit automatic voltage regulator can more effectively solve the problems, such as low-voltage, but be administered for three-phase imbalance and idle
Compensation, harmonic wave control etc. are helpless.In addition, three-phase imbalance can cause taiwan area line neutral point to offset, make light load
One phase voltage is too high, and three-phase regulator can be caused to enter overvoltage protection state when serious, largely effect on the pressure regulation of three-phase regulator
Effect.
The information for being disclosed in the background section is merely intended to increase the understanding to general background of the present utility model, and
It is not construed as recognizing or implies that the information structure has been existing well known to persons skilled in the art in any form
Technology.
Utility model content
The purpose of this utility model is to provide a kind of intelligent balance pressure regulation harmonic elimination comprehensive treatment device, can not so as to overcome
Solves the shortcomings that low-voltage taiwan area tri-phase unbalance factor and brownout simultaneously.
To achieve the above object, the utility model provides a kind of intelligent balance pressure regulation harmonic elimination comprehensive treatment device, including：
Master controller, its voltage sampling port are connected to the power taking pressure side of three phase network, and current acquisition end connects the obtaining current of three phase network
End；Voltage regulating module, three voltage regulating modules access a phase line of the three phase network by one first A.C. contactor respectively,
First A.C. contactor is connected with the master controller；And static reacance generator, its sampling end and the main control
Device connects, and regulation output end accesses the three phase network.
Preferably, in above-mentioned technical proposal, the voltage regulating module is compensator transformer, the input of three compensator transformers
One phase line of end series connection access three phase network, adjustable side pass through the same of the first A.C. contactor access three phase network in parallel respectively
One phase line.
Preferably, in above-mentioned technical proposal, the adjustable side of the compensator transformer is provided with several regulation stalls, Mei Gesuo
The phase line that regulation stall accesses three phase network by one second A.C. contactor is stated, wherein, second A.C. contactor
It is connected with the output end of the master controller.
Preferably, in above-mentioned technical proposal, the static reacance generator includes：PWM signal generator, its input with
The output end connection of the master controller；And three phase inverter bridge, its control terminal and the output end of the PWM signal generator connect
Connect, output end accesses the three phase network.
Preferably, in above-mentioned technical proposal, the model YY-DVS-220C of the master controller.
Preferably, in above-mentioned technical proposal, the static reacance generator is multiple.
Compared with prior art, the utility model has the advantages that：
Intelligent balance pressure regulation harmonic elimination comprehensive treatment device in the utility model, combined by circuit pressure regulator and SVG
Technology, be integrated with the functions such as three phase voltage regulating, uneven regulation, compensation in one, can not only be raised according to current voltage situation or
Each phase voltage is reduced, voltage is maintained in the range of standard qualified voltage, and it is big to calculate taiwan area three-phase imbalance in real time
It is small, final inversion adjustment state, realize tail end line pressure regulation and taiwan area three-phase imbalance regulation comprehensive power quality
Treatment process, pressure regulation can be effectively carried out to low-voltage circuit, and balance taiwan area precisely can be adjusted in real time, be existing electric energy
Quality controlling another kind subsidy technology.
Brief description of the drawings
Fig. 1 is the structural representation according to intelligent balance pressure regulation harmonic elimination comprehensive treatment device of the present utility model.
Fig. 2 is the circuit connection diagram according to intelligent balance pressure regulation harmonic elimination comprehensive treatment device of the present utility model.
Embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail, it is to be understood that this practicality
New protection domain is not limited by embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
Fig. 1 to Fig. 2 is shown to be filled according to the intelligent balance pressure regulation harmonic elimination comprehensive regulation of the utility model preferred embodiment
The structural representation put.
As depicted in figs. 1 and 2, intelligent balance pressure regulation harmonic elimination comprehensive treatment device includes：Master controller, tail end line pressure regulation
Module and static reacance generator SVG-n (also referred to as SVG modules)；Communicated between module by carrier system, device
Integrate the functions such as three phase voltage regulating, three-phase imbalance regulation, reactive-load compensation, on-line monitoring.In the total outlet installation master control of taiwan area
Device processed, SVG modules install three-phase imbalance branch road end, and final taiwan area always exports balance, circuit pressure regulation after three-phase branch balance
Module is arranged on the relatively low place of terminal voltage, and specific system block diagram is shown in Fig. 1.Specifically, with reference to figure 2, the voltage of master controller is adopted
Sample end is connected to the power taking pressure side of three phase network, the obtaining current end of current acquisition end TA connection three phase networks, main in the embodiment
The model YY-DVS-220C, TA that controller is selected are current transformer, for detecting current value；Voltage regulating module becomes for compensation
Depressor TB, boosted for compensating, a phase line of three compensator transformer TB input series connection access three phase network, regulation
End passes through the same phase line of first A.C. contactor KM-A, KM-B, KM-C access three phase networks in parallel, compensator transformer respectively
TB combination DC controling ac contactor KM-A, KM-B, KM-C, are directly controlled by master controller, for controlling each compensation transformation
The operation of device and bypass switching；Further, compensator transformer TB adjustable side is provided with several regulation stalls, each adjusts shelves
Position accesses a phase line of three phase network by one second A.C. contactor KM11, KM12, KM13, for switching each compensation transformation
The compensation gear of device, wherein, the output end of the controlled end and master controller of the first A.C. contactor and the second A.C. contactor connects
Connect, directly controlled by master controller, for controlling each compensator transformer TB switching and switching the compensation shelves of each compensator transformer
Position.
With continued reference to Fig. 2, static reacance generator SVG-n includes：PWM signal generator and three phase inverter bridge；Pwm signal
The input of generator and the output end of master controller connect；The control terminal of three phase inverter bridge and the output of PWM signal generator
End connection, output end (i.e. the regulation output end of static reacance generator) the access three phase network of three phase inverter bridge；Wherein, it is static
Reacance generator SVG-n can be set multiple, is mainly transformed into dc source by inverter principle, first alternating current, then connects handle
Dc source, which is redistributed, is reverse into exchange.
Next, to functions such as the three phase voltage regulating in the embodiment, three-phase imbalance regulation, reactive-load compensation, on-line monitorings
It is described in detail：
With reference to Fig. 2, voltage-regulation principle is：It is main when detecting that any one phase or multiphase input voltage is too low in A, B, C three-phase
Controller automatically controls each corresponding first A.C. contactor action, compensator transformer is put into, and pass through the exchange of control second
Contactor acts, and regulation compensation gear, output voltage is up to state standards qualified voltage；When input voltage returns to national mark
After standard is qualified, control the first A.C. contactor action, compensator transformer is cut off, voltage regulating module bypass.For example, work as a certain period
When A phase input voltages U is relatively low, the first A.C. contactor of main controller controls KM-A actions, compensator transformer TBa is put into, this
When compensator transformer main coil ax can produce an offset voltage △ Ua and be added in A phase lines, raise output voltage Uao,
When Uao after boosting still without reaching qualified voltage, main controller controls KM11 actions, switching compensation gear, by △ Ua liters
Height, output voltage Uao is finally set to rise to qualified voltage.
Three-phase imbalance compensation principle is：Three-phase imbalance intelligent compensation apparatus, it is that one kind utilizes IGBT technologies, SVG skills
The multiple technologies such as art, Power Electronic Technique merge, and device gathers low-voltage distributing line in real time using master controller sample circuit
The operational factors such as three-phase voltage, three-phase current, calculate what three alternate uncompensated loads and needs compensated by model calculation
Electric current, the value then set according to device make three contraries to control PWM signal generator to send control signal to internal IGBT
Become bridge and produce the current signal for meeting to require.Three-phrase burden balance adjusting means just can be according to the friendship of sample circuit in powered on moment
Stream sampling analysis goes out three alternate load unbalanced situations, and master controller calculates the current value for needing to compensate and phase, by PWM
Signal generator sends pwm signal and driven to IGBT, and producing a current signal for meeting to require by three phase inverter bridge is sent to
In system, realize that three-phrase burden balance is adjusted.
The principle of two-way dynamic reactive tracing compensation is：Device can utilize and adjust remaining installed capacity after three-phase imbalance
Perception, the two-way dynamic reactive tracing compensation of capacitive are realized, device detects load current according to foreign current transformer in real time, and
Calculated by master controller DSP to analyze the idle content of load current, PWM is then controlled according to the compensation range set
Signal generator output pwm signal makes three phase inverter bridge produce one and System Reactive Power component size phase to IGBT drive circuit
Deng, reactive current access system in opposite direction, so as to reach the purpose of real time dynamic tracing compensating reactive power.It is required that dynamic reactive
The closed loop response time of compensation is less than 10ms, and the two-way fine compensation of power factor can be achieved.
Monitoring principle on-line is：The operational factor that master controller can be collected to the next machine equipment by carrier communication is carried out
Measurement, statistics, and interacted by GPRS and remote server system data and realize distribution transforming on-line monitoring function, mainly wrap
Include：
1. gathering three-phase voltage, electric current, voltage, electric current, active power, reactive power, power factor and imbalance are realized
The measurement of degree；
2. voltage regulating module day action frequency, total action frequency, current gear, and count each gear actuation time；
Overload and short-circuit protection principle are：Breaker of plastic casing and miniature open circuit can be installed additional in taiwan area intelligent balance regulator
Device, while miniature circuit breaker is equiped with each static reacance generator, when overload or it is short-circuit when, it is corresponding miniature disconnected
Road device or moulded case circuit breaker disjunction are to reach defencive function.When overload or short circuit occur in pressure regulation commutation master control set
When, master controller can control main contactor KM-A, KM-B, KM-C action according to the Protection parameters of setting, and voltage regulating module is switched
To bypass condition, the safety of protection equipment.
Lightning protection principle is：In distribution box can zinc oxide surge arresters effectively prevent Lightning Over-voltage and switching overvoltage from causing
Damage.If running into overvoltage, arrester conducting, which will shove, introduces earthed system.
To sum up, compared with traditional circuit pressure regulator, taiwan area intelligent balance regulator adds three-phase imbalance regulation work(
Can, by controlling SVG modules precisely quick inversion can adjust taiwan area degree of unbalancedness, make the transformer station high-voltage side bus of taiwan area optimal
Degree of unbalancedness state.After three-phase imbalance improves, neutral point excursion disappears, and further increases transformer and contributes, effectively prevents
Transformer one-phase overload, from face ensure that transformer stable operation, the safety in operation of power system also will be enhanced.
Meanwhile taiwan area intelligent balance regulator adds the two-way dynamic reactive outputs of SVG, has by two-way dynamical output
The present electric power of solution of effect, which increases, brings low-voltage to cross benefit or deficient complementarity problem, and the capacitor switching problem fallen behind.It is two-way dynamic
State constantly precisely exports so that power output reduces the reactive component of current of circuit close to 0.99, and it is online to reduce generation
Loss on road and distribution transforming, improve the power factor (PF) of electric power system and the actual output of distribution transforming.
Finally, taiwan area intelligent balance regulator is connected in parallel on main line, solves in some phase-change switches because of pace of change
It is fast and it is irregular follow place, also compensate for the blank that phase-change switch uses, can be according to the real-time inversion weight of line load
New distribution, without power failure, the response time is less than 5ms, does not influence the normal work of consumer electronics equipment.
The foregoing description to specific illustrative embodiment of the present utility model is to illustrate and the purpose of illustration.These
Description is not wishing to for the utility model to be defined to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explain certain principles of the present utility model
And its practical application, so that those skilled in the art can realize and utilize a variety of examples of the present utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shape
Formula is limited.
Claims (6)
- A kind of 1. intelligent balance pressure regulation harmonic elimination comprehensive treatment device, it is characterised in that including：Master controller, its voltage sampling port are connected to the power taking pressure side of three phase network, and current acquisition end connection three phase network takes Current terminal；Voltage regulating module, three voltage regulating modules access a phase line of the three phase network by the first A.C. contactor respectively, First A.C. contactor is connected with the master controller；AndStatic reacance generator, its sampling end are connected with the master controller, and regulation output end accesses the three phase network.
- 2. intelligent balance pressure regulation harmonic elimination comprehensive treatment device according to claim 1, it is characterised in that the voltage regulating module For compensator transformer, a phase line of the input series connection access three phase network of three compensator transformers, adjustable side leads to respectively Cross the same phase line of the first A.C. contactor access three phase network in parallel.
- 3. intelligent balance pressure regulation harmonic elimination comprehensive treatment device according to claim 2, it is characterised in that the compensation transformation The adjustable side of device is provided with several regulation stalls, and each regulation stall accesses three phase network by one second A.C. contactor A phase line, wherein, second A.C. contactor is connected with the output end of the master controller.
- 4. intelligent balance pressure regulation harmonic elimination comprehensive treatment device according to claim 1, it is characterised in that the static reacance Generator includes：PWM signal generator, its input are connected with the output end of the master controller；AndThree phase inverter bridge, its control terminal are connected with the output end of the PWM signal generator, and output end accesses the three-phase electricity Net.
- 5. intelligent balance pressure regulation harmonic elimination comprehensive treatment device according to claim 1, it is characterised in that the master controller Model YY-DVS-220C.
- 6. intelligent balance pressure regulation harmonic elimination comprehensive treatment device according to claim 1, it is characterised in that the static reacance Generator is multiple.
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| CN201720516192.0U CN207218249U (en) | 2017-05-10 | 2017-05-10 | A kind of intelligent balance pressure regulation harmonic elimination comprehensive treatment device |
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| CN201720516192.0U CN207218249U (en) | 2017-05-10 | 2017-05-10 | A kind of intelligent balance pressure regulation harmonic elimination comprehensive treatment device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274111A (en) * | 2018-11-29 | 2019-01-25 | 上海光维电力科技有限公司 | A kind of three-phase imbalance automatic regulating system |
| CN111049149A (en) * | 2019-12-10 | 2020-04-21 | 东北电力大学 | Power grid terminal low voltage treatment method |
| CN111209673A (en) * | 2020-01-08 | 2020-05-29 | 云南电网有限责任公司昆明供电局 | Design method of novel wide-width voltage-regulating distribution transformer |
| CN111600312A (en) * | 2020-05-09 | 2020-08-28 | 青岛鼎信通讯股份有限公司 | Power supply station area terminal low-voltage distributed treatment method based on reactive compensation |
-
2017
- 2017-05-10 CN CN201720516192.0U patent/CN207218249U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274111A (en) * | 2018-11-29 | 2019-01-25 | 上海光维电力科技有限公司 | A kind of three-phase imbalance automatic regulating system |
| CN111049149A (en) * | 2019-12-10 | 2020-04-21 | 东北电力大学 | Power grid terminal low voltage treatment method |
| CN111049149B (en) * | 2019-12-10 | 2022-09-09 | 东北电力大学 | Power grid terminal low voltage treatment method |
| CN111209673A (en) * | 2020-01-08 | 2020-05-29 | 云南电网有限责任公司昆明供电局 | Design method of novel wide-width voltage-regulating distribution transformer |
| CN111600312A (en) * | 2020-05-09 | 2020-08-28 | 青岛鼎信通讯股份有限公司 | Power supply station area terminal low-voltage distributed treatment method based on reactive compensation |
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