CN102882219B - Railway power supply system comprehensive electric energy quality treatment device and method thereof - Google Patents
Railway power supply system comprehensive electric energy quality treatment device and method thereof Download PDFInfo
- Publication number
- CN102882219B CN102882219B CN201210417799.5A CN201210417799A CN102882219B CN 102882219 B CN102882219 B CN 102882219B CN 201210417799 A CN201210417799 A CN 201210417799A CN 102882219 B CN102882219 B CN 102882219B
- Authority
- CN
- China
- Prior art keywords
- reactor
- throw
- reacance generator
- static reacance
- current
- 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.)
- Active
Links
Classifications
-
- 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
- Y02E40/10—Flexible AC transmission systems [FACTS]
-
- 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
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a railway power supply system comprehensive electric energy quality treatment device and method thereof. A static var generator comprises a power unit and an electric reactor and is connected with a pre-charge loop; the power unit is connected in series with the electric reactor; and the pre-charge loop is connected with a power side of a power grid through an AC (alternating current) switch. A thyristor switch electric reactor comprises more than two electric reactor branches; each electric reactor branch comprises an electric reactor and an electronic switch; the electric reactor is connected in series with the electronic switch; and the electric reactor branch is connected in parallel on a load side of the power grid through the electronic switch. A control protection system controls the investment of the electric reactor branches to compensate for the reactive power and controls the static var generator to compensate for the reactive power. The device and method disclosed by the invention overcome the technical shortcomings that the cost is high by using a static var generator only and the thyristor switch electric reactor can not realize continuous compensation, and also consider the advantages of high regulation speed, wide operation range, reactive power compensation and harmonic wave treatment of the static var generator and large capacity and low cost of thyristor switch electric reactor.
Description
Technical field
The present invention relates to field of power electronics, be specifically related to a kind of being applied in electric power supply system for subway, can comprehensive compensation power quality controlling device and the method thereof of idle and filtering harmonic wave.
Background technology
Along with China's city size and urgent develop rapidly of building, urbanization process is progressively being accelerated, personnel's trip and the interflow of commodities are frequent, transport need sharp increase, urban transportation imbalance between supply and demand day is becoming tight, and traffic above-ground cannot adapt to the growing freight volume demand being produced by economic activity and people's lives.Subway, as one of most economical and efficient urban transportation tool in the world at present, is developed rapidly in each big and medium-sized cities of China.At present, existing 33 plans that city has proposed to build city underground in the whole nation, wherein have 28 cities to build.
China's subway mainly adopts centralized power supply system, main transformer station, traction substation, commutation system and several parts of power and lighting system, consists of.Because electric power supply system for subway all adopts cable, connect, its charging capacitive reactive power is large, adds that the fluctuation of traction load itself is large, brings that power factor is low, idle to be sent and a series of unfavorable factors such as resonance overvoltage to urban distribution network.Subway, among densely populated city, once public electric wire net has an accident, can bring very large impact to whole urban electric power supply and social stability.
At present, the mode that solves the power quality problems such as the idle and harmonic wave of electric power supply system for subway mainly contains fixedly shunt reactor FR, thyristor-controlled reactor TCR, static reacance generator SVG, Active Power Filter-APF APF etc.Wherein can only to compensate fixed inductive idle for FR, easily produced and mend or owe to mend, poor effect.TCR can regulate continuously but itself produces harmonic wave, and loss is larger.APF is main only to be suppressed harmonic wave, compensates 19 times with interior each harmonic.Along with the fast development of power electronics full-controlled switch device, there is in recent years adopting the static passive compensation device of nature commutation convertor circuit, be commonly referred to static reacance generator SVG.Take the SVC device that TCR is representative and compare with traditional, the governing speed of SVG is faster, and range of operation is wider, not only can also administer harmonic wave by compensating reactive power, but cost is higher.Electric power supply system for subway mainly be take capacitive reactive power as main simultaneously, therefore proposes a kind of comprehensive electric energy quality improvement method based on static reacance generator SVG+ thuristor throw-in and throw-off reactor TSR herein.Through practical application and expert evaluation, the method is the comprehensive electric energy quality improvement method in electric power supply system for subway that is applied to of current most economical practicality.In the middle of prior art, the content relevant to present patent application mainly contains with Publication about Document:
Document one is better than for Gu Yanqi, Duan Yong be published in December, 2011 < < electromechanical engineering > the 6th phase of >, the paper < < subway line Scheme of Reactive Power Compensation research > > of the 24th volume.The document has proposed the fixedly compensation scheme of shunt reactor of a kind of SVG+, but this scheme is fixing shunt reactor, can not switching, and SVG still needs the capacity that configuration is larger.
The paper < < dynamic reactive compensation device that document two is published in < < low-voltage electrical apparatus > the 12nd phase of > in December, 2009 for Duan Lixin is at the application study > of subway main transformer station >.The document mainly compares centralized compensation, subregion centralized compensation, three kinds of compensation schemes of distributed compensation, does not propose concrete power quality controlling scheme.
Document San Wei Zhuzhou National Engineering Research Center of Converters Co., Ltd. was in application on 09 08th, 2010, and open on December 22nd, 2010, Chinese invention patent application < < mixed power quality treatment method > > that publication number is CN101924371A.This disclosure of the invention a kind of mixed power quality treatment method, at active part, the APF of the SVG of at least two groups and at least two groups is connected on three phase network by transformer isolation mode, the main compensating reactive power electric current of SVG wherein, APF compensation harmonic electric current, falls when serious APF at voltage and also can be used as reacance generator and support voltage to make up the deficiency of SVG capacity; At passive part, to be combined into jumbo direct hanging type SVC by TCR and TSC, FC is directly connected to three phase network and carries out reactive power compensation, and pass through the asymmetric control of the three-phase of TCR, to three-phase is asymmetric, compensate, by thyristor switchable capacitor TSC, provide large capacity capacitive reactive power, by fixed capacity, compensate FC low capacity reactive power is provided, by fixed capacity, compensate the double main subharmonic filter branch of being thyristor-controlled reactor TCR of FC, for electrical energy system is coordinated comprehensively.The shortcoming of the method is not given full play to the characteristic that SVG can filtering harmonic wave, but has increased APF device, has increased floor space and cost, to control, has brought complexity yet.SVG need to be connected to electrical network by transformer simultaneously, has increased floor space and loss, has also limited the capacity of SVG.
Summary of the invention
The object of this invention is to provide a kind of electric power supply system for subway comprehensive electric energy quality controlling device and method thereof, overcome independent use static reacance generator (SVG, Static Var Generator) cost height and thuristor throw-in and throw-off reactor (TSR, Thyristor switched Reactor) technological deficiency that can not Continuous Compensation, takes into account that static reacance generator governing speed is fast, range of operation is wide, compensating reactive power is held concurrently simultaneously and administers harmonic wave and thuristor throw-in and throw-off reactor capacity is large, cost is low advantage.
In order to realize foregoing invention object, the present invention specifically provides a kind of technic relization scheme of electric power supply system for subway comprehensive electric energy quality controlling device, an electric power supply system for subway comprehensive electric energy quality controlling device, comprising: static reacance generator, thuristor throw-in and throw-off reactor, precharge loop, control protection system and alternating-current switch; Static reacance generator comprises power cell and reactor, and static reacance generator is connected with precharge loop, and power cell is connected with reactor, and precharge loop is again by alternating-current switch and the mains side that is connected to electrical network; Thuristor throw-in and throw-off reactor comprises Reactor Branch more than two, and Reactor Branch comprises reactor and electronic switch, and reactor is connected with electronic switch, and Reactor Branch is connected in parallel on the load-side of electrical network by electronic switch; Control protection system and be connected with static reacance generator, thuristor throw-in and throw-off reactor respectively, control the input of Reactor Branch in thuristor throw-in and throw-off reactor with compensating reactive power, and control static reacance generator compensating reactive power.
As the further improvement of a kind of electric power supply system for subway comprehensive electric energy quality of the present invention controlling device technical scheme, reactor is connected with the Reactor Branch of thuristor throw-in and throw-off reactor with the power cell of static reacance generator respectively; Precharge loop comprises charging resistor and the 3rd circuit breaker, and the 3rd circuit breaker is connected in parallel on the two ends of charging resistor; Alternating-current switch comprises the first circuit breaker, the second circuit breaker, the first isolating switch and isolating switch; Precharge loop is connected with electrical network by the first circuit breaker, the first isolating switch successively; The Reactor Branch of thuristor throw-in and throw-off reactor passes through after isolating switch connection separately, then is connected with electrical network by the second circuit breaker.
As the further improvement of a kind of electric power supply system for subway comprehensive electric energy quality of the present invention controlling device technical scheme, control protection system and comprise that A/D sample circuit, Digital Analog Hybrid Circuits, PWM form circuit, photoelectric isolating circuit, IGBT driver module and protection and logic module; A/D sample circuit gathers analog signals, calculating through Digital Analog Hybrid Circuits, one tunnel exports protection and logic module to, and protection and logic module output signal to each switching device in the power cell of static reacance generator and the electronic switch of Reactor Branch again; Another road signal forms circuit output PWM ripple through PWM, then through photoelectric isolating circuit and IGBT driver module, exports the power cell of static reacance generator to.
As the further improvement of a kind of electric power supply system for subway comprehensive electric energy quality of the present invention controlling device technical scheme, Digital Analog Hybrid Circuits comprises FPGA, DSP, dual port RAM, algorithm DSP module and algorithm FPGA module; FPGA transfers to DSP alternately by the input signal from A/D sample circuit; Dual port RAM is responsible for transmitting the interactive information between DSP and algorithm DSP module; DSP is responsible for carrying out malfunction monitoring and logic control is processed, and to electronic switch, exports control signal by protection and logic module; Algorithm DSP module is responsible for carrying out algorithm process, and to PWM, forms circuit output PWM ripple by algorithm FPGA module.
As the further improvement of a kind of electric power supply system for subway comprehensive electric energy quality of the present invention controlling device technical scheme, A/D sample circuit gathers the current i of load
lwith current i through thuristor throw-in and throw-off reactor compensation back loading '
l, and line voltage U; Digital Analog Hybrid Circuits is according to the current i of load
l, line voltage U, and target power factor cos φ calculates the reactive capability that load need to compensate, then to the electronic switch of the Reactor Branch of thuristor throw-in and throw-off reactor, send different switching instructions according to the amount of capacity of thuristor throw-in and throw-off reactor and static reacance generator.
Further improvement as a kind of electric power supply system for subway comprehensive electric energy quality of the present invention controlling device technical scheme; when thuristor throw-in and throw-off reactor comprises two groups of Reactor Branchs, control protection system and according to following rule, determine the compensating instruction of thuristor throw-in and throw-off reactor
determine the group number of Reactor Branch switching, and send trigger impulse to the thyristor groups of electronic switch:
As Q≤Q
r/ 2 o'clock,
each branch road of thuristor throw-in and throw-off reactor is not all thrown, 0～Q
r/ 2 are compensated by static reacance generator;
When-Q
r/ 2 < Q≤0 o'clock,
each branch road of thuristor throw-in and throw-off reactor is not all thrown ,-Q
r/ 2～0 is compensated by static reacance generator;
When-Q
r< Q≤-Q
r/ 2 o'clock,
thuristor throw-in and throw-off reactor drops into one group of branch road, 0～Q
r/ 2 are compensated by static reacance generator;
When-3Q
r/ 2 < Q≤-Q
rtime,
thuristor throw-in and throw-off reactor drops into one group of branch road ,-Q
r/ 2～0 is compensated by static reacance generator;
When-2Q
r< Q≤-3Q
r/ 2 o'clock,
thuristor throw-in and throw-off reactor drops into two groups of branch roads, 0～Q
r/ 2 are compensated by static reacance generator;
When-5Q
r/ 2 < Q≤-2Q
rtime,
thuristor throw-in and throw-off reactor drops into two groups of branch roads ,-Q
r/ 2～0 is compensated by static reacance generator; Wherein, Q
rcompensation capacity for every group of branch road of thuristor throw-in and throw-off reactor.
Further improvement as a kind of electric power supply system for subway comprehensive electric energy quality of the present invention controlling device technical scheme; the output current of the power cell of static reacance generator enters Digital Analog Hybrid Circuits by A/D sample circuit; after the modulation ratio M and phase place α that calculates sinusoidal modulation signal through algorithm DSP module; further obtain three-phase PWM modulation signal; three-phase PWM modulation signal data are sent to algorithm FPGA module; and periodic refreshing three-phase PWM modulation signal data, then relatively produce pwm signal with phase shift triangular carrier and export PWM formation circuit to.
As the further improvement of a kind of electric power supply system for subway comprehensive electric energy quality of the present invention controlling device technical scheme, algorithm DSP module comprises idle detection module, abc/dq0 conversion module, DC voltage regulation module and modulation ratio and phase angle calculating module; The reactive current i that the output current signal of the power cell of static reacance generator obtains through abc/dq0 conversion module
qwith the idle reference current obtaining by idle detection module
carry out PI adjusting, active current i
dwith the meritorious reference current obtaining by direct current voltage regulator
carry out PI adjusting; The voltage U of utilization to power supply
scarry out the voltage signal V obtaining after abc/dq0 conversion
sdbe connected reactance ω L to i
q,
id,
carry out PI decoupling zero, obtain the dq coordinate components that static reacance generator need to send
the dq coordinate components that module need to be sent according to static reacance generator is calculated at modulation ratio and phase angle
the DC voltage value V of the power cell cascade type inverter gathering
dc, the unit number N of every phase cascaded inverter calculates modulation ratio M and the phase angle [alpha] of sinusoidal modulation signal in the phase angle θ of line voltage and power cell.
As the further improvement of a kind of electric power supply system for subway comprehensive electric energy quality of the present invention controlling device technical scheme, static reacance generator adopts cascade connection multi-level type static reacance generator, and power cell adopts heterogeneous cascaded inverter.
The present invention also specifically provides a kind of technic relization scheme of electric power supply system for subway comprehensive electric energy quality improvement method in addition, and a kind of electric power supply system for subway comprehensive electric energy quality improvement method, comprises the following steps:
Control electric current and line voltage that protection system gathers load; First according to the electric current of load and line voltage, calculate the reactive capability that load need to compensate, then by send different switching instructions to electronic switch, the Reactor Branch more than two of controlling thuristor throw-in and throw-off reactor carries out switching, and the large capacity of compensation network is idle;
Control the output current that protection system gathers the power cell of static reacance generator; through computing, obtain three-phase PWM modulation signal; obtain more afterwards driving the pwm signal of static reacance generator power cell with phase shift triangular carrier, control static reacance generator power cell compensation thuristor throw-in and throw-off reactor uncompensated idle.
As a kind of electric power supply system for subway comprehensive electric energy quality of the present invention, administer the further improvement of method and technology scheme, the A/D sample circuit of controlling protection system gathers load current and mains voltage signal, through the calculating of Digital Analog Hybrid Circuits, by protection and logic module, export thuristor throw-in and throw-off reactor switching control signal to each switching device in the power cell of static reacance generator and the electronic switch of Reactor Branch; The A/D sample circuit of controlling protection system gathers the output current signal of the power cell of static reacance generator; calculating through Digital Analog Hybrid Circuits; by PWM, form circuit output PWM ripple, then export control signal to switching device in static reacance generator power cell through photoelectric isolating circuit and IGBT driver module.
The further improvement of administering method and technology scheme as a kind of electric power supply system for subway comprehensive electric energy quality of the present invention, A/D sample circuit gathers the current i of load
lwith current i through thuristor throw-in and throw-off reactor compensation back loading '
l, and line voltage U; Digital Analog Hybrid Circuits is according to the current i of load
l, line voltage U, and target power factor cos φ calculates the reactive capability Q that load need to compensate, then according to the amount of capacity of thuristor throw-in and throw-off reactor and static reacance generator, to the electronic switch of the Reactor Branch of thuristor throw-in and throw-off reactor, send different switching instructions.
As a kind of electric power supply system for subway comprehensive electric energy quality of the present invention, administer the further improvement of method and technology scheme, the output current signal of the power cell of the static reacance generator reactive current i that conversion obtains through abc/dq0
qwith the idle reference current obtaining by idle detection
carry out PI adjusting, active current i
dwith the meritorious reference current obtaining by DC voltage regulation
carry out PI adjusting; The voltage U of utilization to power supply
scarry out the voltage signal V obtaining after abc/dq0 conversion
sdbe connected reactance ω L to i
q,
id,
carry out PI decoupling zero, obtain the dq coordinate components that static reacance generator need to send
and according to the DC voltage value V of the power cell cascade type inverter gathering
dc, the unit number N of every phase cascaded inverter calculates modulation ratio M and the phase angle [alpha] of sinusoidal modulation signal in the phase angle θ of line voltage and power cell.
By implementing the technical scheme of the invention described above a kind of electric power supply system for subway comprehensive electric energy quality controlling device and method thereof, there is following technique effect:
(1) the present invention adopts cascade connection multi-level type static reacance generator, with respect to multiplex and clamped multi-level structure, in cascade connection multi-level type static reacance generator structure, be easy to modularization and expansion, there is voltage redundancy properties, be convenient to realize soft switch technique, control method is simple, is more perfect inverter;
(2) the present invention has changed original static reacance generator and thuristor throw-in and throw-off reactor and has only occurred the mode of using separately; By the Collaborative Control of control system, by the most first-harmonic capacitive reactive power of thuristor throw-in and throw-off reactor compensating load, static reacance generator is the idle and harmonic wave of compensate for residual; So both having overcome thuristor throw-in and throw-off reactor can only have level to regulate the defect of reactive power compensation, has solved again the high problem of large volume static reactive generator cost; Meanwhile, bring into play thuristor throw-in and throw-off reactor compensation capacity greatly and the feature of static reacance generator Continuous Compensation, realized the target to big capacity load Continuous Compensation;
(3) power that in the present invention, active part needs is little, therefore can not increase a lot of costs, but can greatly improve compensation effect, has improved the performance of whole controlling device.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the connecting structure for electrical equipment schematic diagram of a kind of specifically execution mode of electric power supply system for subway comprehensive electric energy quality controlling device of the present invention;
Fig. 2 is the structural principle block diagram that a kind of specifically execution mode of electric power supply system for subway comprehensive electric energy quality controlling device of the present invention is controlled protection system;
Fig. 3 is the system control structure block diagram of a kind of specifically execution mode of electric power supply system for subway comprehensive electric energy quality controlling device of the present invention;
In figure: 1-power cell, 2-electronic switch, 3-precharge loop, 4-controls protection system, 5-load, 6-power supply, 11-is idle detection module, 12-abc/dq0 conversion module, 13-DC voltage regulation module, module is calculated at 14-modulation ratio and phase angle, 41-A/D sample circuit, 42-Digital Analog Hybrid Circuits, 43-PWM forms circuit, 44-photoelectric isolating circuit, 45-IGBT driver module, 46-protection and logic module, 421-FPGA, 422-DSP, 423-dual port RAM, 424-algorithm DSP module, 425-algorithm FPGA module, 461-CPLD protective circuit, 462-CPLD logical circuit, 463-numeral I/O circuit.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
If accompanying drawing 1 is to as shown in accompanying drawing 3, provided the specific embodiment of the present invention's a kind of electric power supply system for subway comprehensive electric energy quality controlling device and method thereof, below in conjunction with the drawings and specific embodiments, the invention will be further described.
The present invention's a kind of electric power supply system for subway comprehensive electric energy quality controlling device and method thereof, adopt static reacance generator (SVG, Static Var Generator) and thuristor throw-in and throw-off reactor (TSR, Thyristorswitched Reactor) method combining, solve that power factor is low, idle to be sent and a series of power quality problems such as harmonic wave comprehensively, avoid these power quality problems to bring harm to electrical network, guarantee the reliability of electric power supply system for subway.
For the feature of electric power supply system for subway, the cable idle impact of charging is large, and night, power factor was low, and reactive power fluctuation is large, and these power quality problems cause the present situations such as very large reactive loss, voltage fluctuation and flickering.Deficiency in view of prior art scheme, harmonic wave, Reactive-current General Compensation mode that the present invention adopts static reacance generator+thuristor throw-in and throw-off reactor to combine, not only can overcome the shortcoming that the high and thuristor throw-in and throw-off reactor of independent use static reacance generator cost can not Continuous Compensation, and can draw the advantage that static reacance generator governing speed is fast, range of operation is wide, compensating reactive power is held concurrently improvement harmonic wave and thuristor throw-in and throw-off reactor capacity is large, cost is low, to obtain effective, the lower-cost new electric energy quality controlling device of a kind of comprehensive compensation and method thereof.
The embodiment of a kind of electric power supply system for subway comprehensive electric energy quality controlling device as shown in Figure 1, comprising: static reacance generator, thuristor throw-in and throw-off reactor, precharge loop 3, control protection system 4 and alternating-current switch.Static reacance generator comprises power cell 1 and reactor L10, and static reacance generator is connected with precharge loop 3, and power cell 1 is connected with reactor L10, and precharge loop 3 is again by alternating-current switch and power supply 6 one sides that are connected to electrical network front end.Thuristor throw-in and throw-off reactor comprises Reactor Branch more than two, and the Reactor Branch quantity specifically comprising can comprehensively be determined according to electric power supply system for subway compensating reactive power demand, reactive compensation adjusting precision and response speed.Reactor Branch comprises reactor L11～L1n and electronic switch 2, and reactor L11～L1n connects with electronic switch 2, and Reactor Branch is connected in parallel on rightmost load 5 one sides of electrical network by electronic switch 2, and load 5 is nonlinear load.Control protection system 4 and be connected with static reacance generator, thuristor throw-in and throw-off reactor respectively, control the input of Reactor Branch in thuristor throw-in and throw-off reactor with compensating reactive power, and control static reacance generator compensating reactive power.Wherein, static reacance generator further adopts cascade connection multi-level type static reacance generator, and power cell 1 further adopts heterogeneous cascaded inverter.
The basic functional principle of electric power supply system for subway comprehensive electric energy quality controlling device of the present invention is: major part is idle to be compensated by thuristor throw-in and throw-off reactor, and the idle and harmonic wave that thuristor throw-in and throw-off reactor has not compensated is compensated by static reacance generator.Static reacance generator can be exported from perception to capacitive adjustable idle continuously, and whole electric power supply system for subway just can carry out Continuous Compensation to reactive power, simultaneously can also filtering harmonic wave.Like this, the performance of whole electric power supply system for subway is better than using separately thuristor throw-in and throw-off reactor.And the capacity of static reacance generator can reduce, and greatly reduces cost.
Reactor is connected with the Reactor Branch of thuristor throw-in and throw-off reactor with the power cell of static reacance generator respectively.Precharge loop 3 comprises charging resistor R and the 3rd circuit breaker Q F11, and the 3rd circuit breaker Q F11 is connected in parallel on the two ends of charging resistor R.Alternating-current switch comprises the first circuit breaker Q F1, the second circuit breaker Q F2, the first isolating switch QS1 and isolating switch QS11～QS1n.Precharge loop 3 is connected with electrical network by the first circuit breaker Q F1, the first isolating switch QS1 successively.The Reactor Branch of thuristor throw-in and throw-off reactor passes through after isolating switch QS11～QS1n connection separately, then is connected with electrical network by the second circuit breaker Q F2.
As shown in Figure 2, between the static reacance generator in the present invention and thuristor throw-in and throw-off reactor, further adopt cooperative control method.Control protection system 4 and further comprise A/D sample circuit 41, two DSP(DigitalSignal Processor; digital signal processor)+double FPGA (Field Programmable Gate Array, i.e. field programmable gate array) is that Digital Analog Hybrid Circuits 42, the PWM of core forms circuit 43, photoelectric isolating circuit 44, IGBT driver module 45 and protection and logic module 46.A/D sample circuit 41 gathers analog signals; calculating through Digital Analog Hybrid Circuits 42; one tunnel exports protection and logic module 46 to, and protection and logic module 46 output signal to each switching device in the power cell 1 of static reacance generator and the electronic switch 2 of Reactor Branch again.Protection and logic module 46 further comprise CPLD protective circuit 461, CPLD logical circuit 462 and digital I/O circuit 463.DSP 422 is connected with CPLD logical circuit 462 with CPLD protective circuit 461 respectively, and CPLD protective circuit 461 is connected with digital I/O circuit 463 with CPLD logical circuit 462 again; Another road signal forms circuit 43 output PWM ripples through PWM, process photoelectric isolating circuit 44 and IGBT driver module 45 export the power cell 1 of static reacance generator to again, switching device in the multi-level concatenation inverter of driving power unit 1, switching device can adopt IGBT(Insulated GateBipolar Transistor, insulated gate bipolar transistor) etc.Protection and logic module 46 are carried out serial communication with electronic switch 2 and power cell 1 by optical fiber; integrated information; the protection of realization to electronic switch 2 and power cell 1; protection and logic module 46 are based on CPLD(Complex Programmable LogicDevice; CPLD), the protection project mainly completing has: switching device input current overcurrent, direct voltage overvoltage, direct voltage is under-voltage IGBT element fault, long pulse protection, Thyristor fault etc.Wherein, input current overcurrent, direct voltage overvoltage, direct voltage is under-voltage, the protection of IGBT element fault, long pulse is the protection to power cell 1.
Digital Analog Hybrid Circuits 42 further comprises FPGA 421, DSP 422, dual port RAM 423, algorithm DSP module 424 and algorithm FPGA module 425.FPGA 421 transfers to DSP 422 alternately by the input signal from A/D sample circuit 41.Dual port RAM 423 is responsible for transmitting the interactive information between DSP 422 and algorithm DSP module 424.DSP 422 is responsible for carrying out malfunction monitoring and logic control is processed, and to electronic switch 2, exports control signals by protection and logic module 46.Algorithm DSP module 424 is responsible for carrying out algorithm process, and to PWM, forms circuit 43 output PWM ripples by algorithm FPGA module 425.
The overwhelming majority between the main transformer station of electric power supply system for subway and traction substation etc. adopts cable to connect, so electric power supply system for subway is except commutation system produces lagging reactive power, and it is idle that cable also can produce capacitive charging.The main reactive source of electric power supply system for subway comprises: subway rectifier, main transformer and middle pressure transformer, cable charge idle.During rectifier work, can produce perception idle; It is idle that main transformer and middle pressure transformer can produce perception; It is idle that cable can produce charging, and be capacitive reactive power.In the time of subway transmission power low load running in little and evening in the early stage, electric power supply system for subway can not surpass the charging capacitive reactive power of cable to the idle compensation capacity of perception, so only consider the idle Q of maximum capacitive under line system Light Condition during statistic for receiver power quality controlling device capacity
c, need to configure the idle-no-load transformer of comprehensive electric energy quality controlling device=cable charging idle.
A/D sample circuit 41 gathers the current i of load 5
lwith current i through thuristor throw-in and throw-off reactor compensation back loading 5 '
l, and line voltage U.Digital Analog Hybrid Circuits 42 is according to the current i of load 5
l, line voltage U, and target power factor cos φ calculates the reactive capability that load 5 needs compensation, then to the electronic switch 2 of the Reactor Branch of thuristor throw-in and throw-off reactor, send different switching instructions according to the amount of capacity of thuristor throw-in and throw-off reactor and static reacance generator.
If the compensation capacity of every group of Reactor Branch of thuristor throw-in and throw-off reactor is Q
r, the available compensation capacity of thuristor throw-in and throw-off reactor can be Q like this
rand 2Q
r(originally sentencing 2 branch roads is example, in accompanying drawing 1 during n=2), in order to allow controlling device reach the object of Continuous Compensation, the capacity of static reacance generator is made as Q
s=Q
r/ 2, by its available compensation capacity, be-Q
r/ 2 ~ Q
r/ 2, the compensation capacity that therefore whole device can provide is-5Q
r/ 2 ~ Q
r/ 2.When thuristor throw-in and throw-off reactor comprises two groups of Reactor Branchs, control protection system 4 and according to following rule, determine the compensating instruction of thuristor throw-in and throw-off reactor
determine the group number of Reactor Branch switching, and send trigger impulse to the thyristor groups of electronic switch 2:
As Q≤Q
r/ 2 o'clock,
each branch road of thuristor throw-in and throw-off reactor is not all thrown, 0～Q
r/ 2 are compensated by static reacance generator;
When-Q
r/ 2 < Q≤0 o'clock,
each branch road of thuristor throw-in and throw-off reactor is not all thrown ,-Q
r/ 2～0 is compensated by static reacance generator;
When-Q
r< Q≤-Q
r/ 2 o'clock,
thuristor throw-in and throw-off reactor drops into one group of branch road, 0～Q
r/ 2 are compensated by static reacance generator;
When-3Q
r/ 2 < Q≤-Q
rtime,
thuristor throw-in and throw-off reactor drops into one group of branch road ,-Q
r/ 2～0 is compensated by static reacance generator;
When-2Q
r< Q≤-3Q
r/ 2 o'clock,
thuristor throw-in and throw-off reactor drops into two groups of branch roads, 0～Q
r/ 2 are compensated by static reacance generator;
When-5Q
r/ 2 < Q≤-2Q
rtime,
thuristor throw-in and throw-off reactor drops into two groups of branch roads ,-Q
r/ 2～0 is compensated by static reacance generator.
Numeral I/O circuit 463 is according to compensating instruction
thyristor groups switching controller in thuristor throw-in and throw-off reactor sends corresponding switching instruction, thyristor groups switching controller is received after instruction Automatic-searching the best time and to the thyristor groups in Reactor Branch, is sent trigger impulse by optical cable, completes the switching operation of compensation branch road.
The output current of the power cell 1 of static reacance generator enters Digital Analog Hybrid Circuits 42 by A/D sample circuit 41; after the modulation ratio M and phase place α that calculates sinusoidal modulation signal through algorithm DSP module 424; further obtain three-phase PWM modulation signal; three-phase PWM modulation signal data are sent to algorithm FPGA module 425; and periodic refreshing three-phase PWM modulation signal data, then relatively produce pwm signal with phase shift triangular carrier and export PWM formation circuit 43 to.The up-to-date information data refreshing of algorithm FPGA module 425 storage algorithm DSP module 424, then relatively produces pwm signal with phase shift triangular carrier, no longer needs to take operation time and the resource of DSP.Wherein the multi-channel PWM generator based on algorithm FPGA module 425 is mainly comprised of sine-wave generator, triangular-wave generator, carrier phase SPWM generator and dead band generator.
The maximum feature that the present invention adopts DSP and FPGA to combine use is: flexible structure, there is stronger versatility, and hardware need not be revised and different algorithms can be realized, be suitable for modularized design, improve efficiency of algorithm; Its construction cycle of while is shorter, and system is easy to maintenance and expansion, is applicable to real time signal processing.
As shown in Figure 3, algorithm DSP module 424 comprises idle detection module 11, abc/dq0 conversion module 12, DC voltage regulation module 13 and modulation ratio and phase angle calculating module 14.The reactive current i that the output current signal of the power cell 1 of static reacance generator obtains through abc/dq0 conversion module 12
qwith the idle reference current obtaining by idle detection module 11
carry out PI(Proportional Integral, proportional integral) regulate active current i
dwith the meritorious reference current obtaining by direct current voltage regulator 13
carry out PI adjusting.The voltage U of utilization to power supply 6
scarry out the voltage signal V obtaining after abc/dq0 conversion
sdbe connected reactance ω L to i
q,
id,
carry out PI decoupling zero, obtain the dq coordinate components that static reacance generator need to send
the dq coordinate components that module 14 need to be sent according to static reacance generator is calculated at modulation ratio and phase angle
gather cascade module, i.e. the DC voltage value V of power cell 1 cascade type inverter
dc, the unit number N of every phase cascaded inverter calculates modulation ratio M and the phase angle [alpha] of sinusoidal modulation signal in the phase angle θ of line voltage and power cell 1.Computing formula is as follows:
Above algorithm all carries out in algorithm DSP module 424, and algorithm DSP module 424 is after completing control calculating, and periodic refreshing exports the modulation signal data of power cell 1 to, and delivers to algorithm FPGA module 425.The pwm signal of algorithm FPGA module 425 output through amplifying, isolation, has driven pwm pulse level conversion, by signal through amplification, isolation, the driving signal that formation has a real driving force removes each power switch pipe of power cell 1.
An embodiment for electric power supply system for subway comprehensive electric energy quality improvement method, comprises the following steps:
Control electric current and line voltage that protection system 4 gathers load 5; First according to the electric current of load 5 and line voltage, calculating load 5 needs the reactive capability of compensation, then by send different switching instructions to electronic switch 2, the Reactor Branch more than two of controlling thuristor throw-in and throw-off reactor carries out switching, and the large capacity of compensation network is idle;
Control the output current that protection system 4 gathers the power cell 1 of static reacance generator; through computing, obtain three-phase PWM modulation signal; obtain more afterwards driving the pwm signal of static reacance generator power cell 1 with phase shift triangular carrier, control static reacance generator power cell 1 compensation thuristor throw-in and throw-off reactor uncompensated idle.
The A/D sample circuit 41 of controlling protection system 4 gathers load current and mains voltage signal, through the calculating of Digital Analog Hybrid Circuits 42, by protection and logic module 46, export thuristor throw-in and throw-off reactor switching control signal to each switching device in the power cell 1 of static reacance generator and the electronic switch 2 of Reactor Branch; The A/D sample circuit 41 of controlling protection system 4 gathers the output current signal of the power cell 1 of static reacance generator; calculating through Digital Analog Hybrid Circuits 42; by PWM, form circuit 43 output PWM ripples, then export control signal to switching device in static reacance generator power cell 1 through photoelectric isolating circuit 44 and IGBT driver module 45.
A/D sample circuit 41 gathers the current i of load 5
lwith current i through thuristor throw-in and throw-off reactor compensation back loading 5 '
l, and line voltage U; Digital Analog Hybrid Circuits 42 is according to the current i of load 5
l, line voltage U, and target power factor cos φ calculates the reactive capability Q that load 5 needs compensation, then according to the amount of capacity of thuristor throw-in and throw-off reactor and static reacance generator, to the electronic switch 2 of the Reactor Branch of thuristor throw-in and throw-off reactor, send different switching instructions.
The output current signal of the power cell 1 of the static reacance generator reactive current i that conversion obtains through abc/dq0
qwith the idle reference current obtaining by idle detection
carry out PI adjusting, active current i
dwith the meritorious reference current obtaining by DC voltage regulation
carry out PI adjusting; The voltage U of utilization to power supply 6
scarry out the voltage signal V obtaining after abc/dq0 conversion
sdbe connected reactance ω L to i
q,
id,
carry out PI decoupling zero, obtain the dq coordinate components that static reacance generator need to send
and according to the DC voltage value V of the power cell 1 cascade type inverter gathering
dc, the unit number N of every phase cascaded inverter calculates modulation ratio M and the phase angle [alpha] of sinusoidal modulation signal in the phase angle θ of line voltage and power cell 1; Wherein, the phase angle that θ is line voltage, abc/dq0 conversion module 12 is usingd the phase angle θ of line voltage as the phase-locked value of the line voltage that carries out abc/dq0 conversion.
The present invention has changed original static reacance generator and the mode of using separately only appears in thuristor throw-in and throw-off reactor.By the Collaborative Control of control system, by the most first-harmonic capacitive reactive power of thuristor throw-in and throw-off reactor compensating load, static reacance generator is the idle and harmonic wave of compensate for residual.So both having overcome thuristor throw-in and throw-off reactor can only have level to regulate the defect of reactive power compensation, has solved again the high problem of large volume static reactive generator cost.The feature of simultaneously having brought into play the large and static reacance generator Continuous Compensation of thuristor throw-in and throw-off reactor compensation capacity, has realized the target to big capacity load Continuous Compensation.
The power that in the present invention, active part needs is little, therefore can not increase a lot of costs, but can greatly improve compensation effect, has improved the performance of whole electric power supply system for subway.Meanwhile, have good dynamically continuous regulating power, it is adjustable continuously to capacitive reactive power that perception is idle, possesses good harmonic characterisitic and filter function simultaneously, and loss and floor space are little, realize fast reactive power compensation and harmonic wave control.Adopt the static reacance generator of cascade connection multi-level type.With respect to multiplex and clamped multi-level structure, in cascade connection multi-level type static reacance generator structure, be easy to modularization and expansion, there is voltage redundancy properties, be convenient to realize soft switch technique, control method is simple, is more perfect inverter.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction.Although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention.Any those of ordinary skill in the art, do not departing from technical solution of the present invention scope situation, all can utilize method and the technology contents of above-mentioned announcement to make many possible changes and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, be equal to replacements, equivalence changes and modify, all still belong in the scope that technical solution of the present invention protects.
Claims (11)
1. an electric power supply system for subway comprehensive electric energy quality controlling device, is characterized in that, comprising: static reacance generator, thuristor throw-in and throw-off reactor, precharge loop (3), control protection system (4) and alternating-current switch; Described static reacance generator comprises power cell (1) and reactor (L10), static reacance generator is connected with precharge loop (3), power cell (1) is connected with reactor (L10), and precharge loop (3) are again by alternating-current switch and the mains side that is connected to electrical network; Described thuristor throw-in and throw-off reactor comprises Reactor Branch more than two, described Reactor Branch comprises reactor (L11～L1n) and electronic switch (2), reactor (L11～L1n) is connected with electronic switch (2), and Reactor Branch is connected in parallel on the load-side of electrical network by electronic switch (2); Described control protection system (4) is connected with static reacance generator, thuristor throw-in and throw-off reactor respectively, controls the input of Reactor Branch in thuristor throw-in and throw-off reactor with compensating reactive power, and controls static reacance generator compensating reactive power; Described control protection system (4) comprises Digital Analog Hybrid Circuits (42), described Digital Analog Hybrid Circuits (42) further comprises algorithm DSP module (424), and described algorithm DSP module (424) comprises idle detection module (11), abc/dq0 conversion module (12), DC voltage regulation module (13) and modulation ratio and phase angle calculating module (14); The reactive current i that the output current signal of the power cell of static reacance generator (1) obtains through abc/dq0 conversion module (12)
qwith the idle reference current obtaining by idle detection module (11)
carry out PI adjusting, active current i
dwith the meritorious reference current obtaining by direct current voltage regulator (13)
carry out PI adjusting; The voltage U of utilization to power supply (6)
scarry out the voltage signal V obtaining after abc/dq0 conversion
sdbe connected reactance ω L to i
q,
i
d,
carry out PI decoupling zero, obtain the dq coordinate components that static reacance generator need to send
the dq coordinate components that module (14) need to be sent according to static reacance generator is calculated at modulation ratio and phase angle
the DC voltage value V of power cell (1) the cascade type inverter gathering
dc, the unit number N of every phase cascaded inverter calculates modulation ratio M and the phase angle [alpha] of sinusoidal modulation signal in the phase angle θ of line voltage and power cell (1).
2. a kind of electric power supply system for subway comprehensive electric energy quality controlling device according to claim 1, is characterized in that: reactor is connected with the Reactor Branch of thuristor throw-in and throw-off reactor with the power cell of static reacance generator respectively; Described precharge loop (3) comprises charging resistor (R) and the 3rd circuit breaker (QF11), and described the 3rd circuit breaker (QF11) is connected in parallel on the two ends of charging resistor (R); Described alternating-current switch comprises the first circuit breaker (QF1), the second circuit breaker (QF2), the first isolating switch (QS1) and isolating switch (QS11～QS1n); Precharge loop (3) is connected with electrical network by the first circuit breaker (QF1), the first isolating switch (QS1) successively; The Reactor Branch of thuristor throw-in and throw-off reactor passes through after isolating switch (QS11～QS1n) connection separately, then is connected with electrical network by the second circuit breaker (QF2).
3. a kind of electric power supply system for subway comprehensive electric energy quality controlling device according to claim 1 and 2, is characterized in that: described control protection system (4) also comprises that A/D sample circuit (41), PWM form circuit (43), photoelectric isolating circuit (44), IGBT driver module (45) and protection and logic module (46); A/D sample circuit (41) gathers analog signals, calculating through Digital Analog Hybrid Circuits (42), one tunnel exports protection and logic module (46) to, and protection and logic module (46) output signal to each switching device in the power cell (1) of static reacance generator and the electronic switch (2) of Reactor Branch again; Another road signal forms circuit (43) output PWM ripple through PWM, then passes through the power cell (1) that photoelectric isolating circuit (44) and IGBT driver module (45) export static reacance generator to.
4. a kind of electric power supply system for subway comprehensive electric energy quality controlling device according to claim 3, is characterized in that: described Digital Analog Hybrid Circuits (42) also comprises FPGA (421), DSP (422), dual port RAM (423) and algorithm FPGA module (425); FPGA (421) transfers to DSP (422) alternately by the input signal from A/D sample circuit (41); Dual port RAM (423) is responsible for transmitting the interactive information between DSP (422) and algorithm DSP module (424); DSP (422) is responsible for carrying out malfunction monitoring and logic control is processed, and to electronic switch (2), exports control signal by protection and logic module (46); Algorithm DSP module (424) is responsible for carrying out algorithm process, and to PWM, forms circuit (43) output PWM ripple by algorithm FPGA module (425).
5. a kind of electric power supply system for subway comprehensive electric energy quality controlling device according to claim 4, is characterized in that: described A/D sample circuit (41) gathers the current i of load (5)
lwith current i through thuristor throw-in and throw-off reactor compensation back loading (5) '
l, and line voltage U; Digital Analog Hybrid Circuits (42) is according to the current i of load (5)
l, line voltage U, and target power factor cos φ calculates the reactive capability that load (5) needs compensation, then to the electronic switch (2) of the Reactor Branch of thuristor throw-in and throw-off reactor, send different switching instructions according to the amount of capacity of thuristor throw-in and throw-off reactor and static reacance generator.
6. according to a kind of electric power supply system for subway comprehensive electric energy quality controlling device described in claim 4 or 5; it is characterized in that: when thuristor throw-in and throw-off reactor comprises two groups of Reactor Branchs, control protection system (4) and according to following rule, determine the compensating instruction of thuristor throw-in and throw-off reactor
determine the group number of Reactor Branch switching, and send trigger impulse to the thyristor groups of electronic switch (2):
As Q≤Q
r/ 2 o'clock,
each branch road of thuristor throw-in and throw-off reactor is not all thrown, 0～Q
r/ 2 are compensated by static reacance generator;
When-Q
r/ 2 < Q≤0 o'clock,
each branch road of thuristor throw-in and throw-off reactor is not all thrown ,-Q
r/ 2～0 is compensated by static reacance generator;
When-Q
r< Q≤-Q
r/ 2 o'clock,
thuristor throw-in and throw-off reactor drops into one group of branch road, 0～Q
r/ 2 are compensated by static reacance generator;
When-3Q
r/ 2 < Q≤-Q
rtime,
thuristor throw-in and throw-off reactor drops into one group of branch road ,-Q
r/ 2～0 is compensated by static reacance generator;
When-2Q
r< Q≤-3Q
r/ 2 o'clock,
thuristor throw-in and throw-off reactor drops into two groups of branch roads, 0～Q
r/ 2 are compensated by static reacance generator;
When-5Q
r/ 2 < Q≤-2Q
rtime,
thuristor throw-in and throw-off reactor drops into two groups of branch roads ,-Q
r/ 2～0 is compensated by static reacance generator;
Wherein, Q
rcompensation capacity for every group of branch road of thuristor throw-in and throw-off reactor.
7. according to a kind of electric power supply system for subway comprehensive electric energy quality controlling device described in claim 4 or 5, it is characterized in that: the output current of the power cell of described static reacance generator (1) enters Digital Analog Hybrid Circuits (42) by A/D sample circuit (41), after the modulation ratio M and phase place α that calculates sinusoidal modulation signal through algorithm DSP module (424), further obtain three-phase PWM modulation signal, three-phase PWM modulation signal data are sent to algorithm FPGA module (425), and periodic refreshing three-phase PWM modulation signal data, then relatively produce pwm signal with phase shift triangular carrier and export PWM formation circuit (43) to.
8. according to a kind of electric power supply system for subway comprehensive electric energy quality controlling device described in arbitrary claim in claim 1,2,4,5, it is characterized in that: described static reacance generator adopts cascade connection multi-level type static reacance generator, and described power cell (1) adopts heterogeneous cascaded inverter.
9. an electric power supply system for subway comprehensive electric energy quality improvement method, is characterized in that, comprises the following steps:
Control electric current and line voltage that protection system (4) gathers load (5); First according to electric current and the line voltage of load (5), calculating load (5) needs the reactive capability of compensation, then by sending different switching instructions to electronic switch (2), the Reactor Branch more than two of controlling thuristor throw-in and throw-off reactor carries out switching, and the large capacity of compensation network is idle;
Described control protection system (4) gathers the output current of the power cell (1) of static reacance generator, through computing, obtain three-phase PWM modulation signal, obtain more afterwards driving the pwm signal of static reacance generator power cell (1) with phase shift triangular carrier, control static reacance generator power cell (1) compensation thuristor throw-in and throw-off reactor uncompensated idle;
The output current signal of the power cell of static reacance generator (1) the reactive current i that conversion obtains through abc/dq0
qwith the idle reference current obtaining by idle detection
carry out PI adjusting, active current i
dwith the meritorious reference current obtaining by DC voltage regulation
carry out PI adjusting; The voltage U of utilization to power supply (6)
scarry out the voltage signal V obtaining after abc/dq0 conversion
sdbe connected reactance ω L to i
q,
i
d,
carry out PI decoupling zero, obtain the dq coordinate components that static reacance generator need to send
and according to the DC voltage value V of power cell (1) the cascade type inverter gathering
dc, the unit number N of every phase cascaded inverter calculates modulation ratio M and the phase angle [alpha] of sinusoidal modulation signal in the phase angle θ of line voltage and power cell (1).
10. a kind of electric power supply system for subway comprehensive electric energy quality improvement method according to claim 9, it is characterized in that: the A/D sample circuit (41) of described control protection system (4) gathers load current and mains voltage signal, through the calculating of Digital Analog Hybrid Circuits (42), by protection and logic module (46), export thuristor throw-in and throw-off reactor switching control signal to each switching device in the power cell (1) of static reacance generator and the electronic switch (2) of Reactor Branch; The A/D sample circuit (41) of described control protection system (4) gathers the output current signal of the power cell (1) of static reacance generator; calculating through Digital Analog Hybrid Circuits (42); by PWM, form circuit (43) output PWM ripple, then pass through photoelectric isolating circuit (44) and IGBT driver module (45) exports control signal to switching device in static reacance generator power cell (1).
11. a kind of electric power supply system for subway comprehensive electric energy quality improvement methods according to claim 10, is characterized in that: described A/D sample circuit (41) gathers the current i of load (5)
lwith current i through thuristor throw-in and throw-off reactor compensation back loading (5) '
l, and line voltage U; Digital Analog Hybrid Circuits (42) is according to the current i of load (5)
l, line voltage U, and target power factor cos φ calculates the reactive capability Q that load (5) needs compensation, then according to the amount of capacity of thuristor throw-in and throw-off reactor and static reacance generator, to the electronic switch (2) of the Reactor Branch of thuristor throw-in and throw-off reactor, send different switching instructions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210417799.5A CN102882219B (en) | 2012-10-26 | 2012-10-26 | Railway power supply system comprehensive electric energy quality treatment device and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210417799.5A CN102882219B (en) | 2012-10-26 | 2012-10-26 | Railway power supply system comprehensive electric energy quality treatment device and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102882219A CN102882219A (en) | 2013-01-16 |
| CN102882219B true CN102882219B (en) | 2014-11-05 |
Family
ID=47483446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210417799.5A Active CN102882219B (en) | 2012-10-26 | 2012-10-26 | Railway power supply system comprehensive electric energy quality treatment device and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102882219B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326374B (en) * | 2013-06-13 | 2015-12-23 | 国家电网公司 | A kind of electric railway AT tractive power supply system 55kV static passive compensation device |
| CN103326366A (en) * | 2013-06-28 | 2013-09-25 | 中国西电电气股份有限公司 | Three-single-phase-three-wire-system parallel APF/SVG device |
| CN104065085A (en) * | 2014-06-03 | 2014-09-24 | 江苏华冠电器集团有限公司 | Comprehensive controller applied to SVG /TSC (Static Var Generator)/ (Twin Subcarrier) and control method thereof |
| CN104362631B (en) * | 2014-11-06 | 2015-09-16 | 江苏辰午节能科技股份有限公司 | A kind of high-power idle control method with the dynamic mixing compensation system of harmonic wave |
| CN104538973B (en) * | 2014-12-16 | 2017-09-19 | 中铁第四勘察设计院集团有限公司 | A kind of compensation method of the middle-voltage network reactive power of the urban transportation |
| CN104505844B (en) * | 2015-01-08 | 2017-01-11 | 国网上海市电力公司 | Cascaded STATCOM capacitor voltage balance control method based on active voltage vector reduplication |
| CN105186515B (en) * | 2015-07-29 | 2019-02-15 | 山东蓝天电能科技有限公司 | Hybrid power filtering control system |
| CN109830967A (en) * | 2018-09-30 | 2019-05-31 | 国网山东省电力公司烟台供电公司 | A kind of distribution is idle and Harmonic-wave compensation system and its control method |
| CN109687476A (en) * | 2018-12-26 | 2019-04-26 | 安徽一天电能质量技术有限公司 | Electricity opens standby change dynamic reactive compensation device and its control method |
| CN110504687A (en) * | 2019-08-16 | 2019-11-26 | 深圳市伊力科电源有限公司 | Power quality harnessed synthetically system and method |
| CN112491058B (en) * | 2019-09-12 | 2022-07-22 | 南京南瑞继保电气有限公司 | Power balancing device, system and control method thereof |
| CN111509729A (en) * | 2020-03-26 | 2020-08-07 | 广西电网有限责任公司电力科学研究院 | Multi-level reactive compensation cooperative control method and device for urban rail transit |
| CN111224407B (en) * | 2020-03-27 | 2021-06-18 | 国网河南省电力公司信息通信公司 | Power network protection system |
| CN111509734B (en) * | 2020-05-29 | 2021-10-15 | 国网山东省电力公司电力科学研究院 | Reactive power control-based reactive compensation circuit of magnetically controlled reactor and control method thereof |
| CN115764920B (en) * | 2023-01-09 | 2023-05-23 | 杭州得诚电力科技股份有限公司 | Static var generator, control method and control module of static var generator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201197078Y (en) * | 2007-11-29 | 2009-02-18 | 大连理工大学 | Mixing type static idle work generator |
| JP5370848B2 (en) * | 2009-11-30 | 2013-12-18 | 東芝三菱電機産業システム株式会社 | Self-excited reactive power compensator |
| CN101741093B (en) * | 2010-03-11 | 2012-05-30 | 哈尔滨工业大学 | Control method for realizing power compensation and harmonic governance |
-
2012
- 2012-10-26 CN CN201210417799.5A patent/CN102882219B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102882219A (en) | 2013-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102882219B (en) | Railway power supply system comprehensive electric energy quality treatment device and method thereof | |
| CN102738810B (en) | Traction power supply system and method | |
| CN102267405B (en) | Energy feeding type dragging power supply device and control method thereof | |
| CN106374529B (en) | Distributed energy is grid-connected and reactive compensation composite control method | |
| CN102882223B (en) | Water scene and biomass multi-energy integrated complementary electricity-generating method and device | |
| CN104377732B (en) | A kind of based on dc bus distributed MPPT photovoltaic generating system | |
| CN202046214U (en) | Energy-fed traction power supply device | |
| CN103928928B (en) | A kind of high-speed railway quality of power supply and supply conductor voltage comprehensive compensation system | |
| CN102126438B (en) | Electric split-phase non-interruption flexible connection-compensation device and method for traction electric network | |
| CN101877548B (en) | For three-phase four-leg inverter and the grid-connected photovoltaic system of parallel network power generation | |
| CN102111077B (en) | Charging power supply system | |
| CN106099962A (en) | A kind of electric automobile charging station is actively engaged in the system and method for electrical network regulation | |
| CN105811453A (en) | Distributed energy intelligent access system and access method thereof | |
| CN102299646A (en) | Alternating-current inductance-free and energy-saving high-voltage direct-current traction power supply current transformation device and control method thereof | |
| CN102412544A (en) | Power-uninterrupted ice melting and SVG-type reactive static compensation compound device and use method thereof | |
| CN106953332A (en) | Electrified railway in-phase power supply scheme based on uncontrollable rectifier and step doping inversion | |
| CN203039373U (en) | Out-phase and in-phase compatible integration compensation device of Vv wiring traction substation | |
| CN207010241U (en) | A kind of hybrid power electronic transformer of unified power quality controlling | |
| CN203774792U (en) | High speed railway power quality and traction network voltage integration compensation system | |
| CN205407292U (en) | Distributing type energy intelligence access system | |
| CN102611173B (en) | Two-level charge-discharge system | |
| CN103904675A (en) | Feeder interconnection converter | |
| CN105576687A (en) | AC and DC dual-use energy storage and power regulation device and control method thereof | |
| CN202930956U (en) | Unified power flow controller used in unbalanced system | |
| CN104022504B (en) | Traction Substation of Electric Railway power supply based on SPWM technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |