CN100581869C - Multi-target comprehensive control energy-saving device for subway power supply system - Google Patents
Multi-target comprehensive control energy-saving device for subway power supply system Download PDFInfo
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Abstract
A multi-object comprehensive control energy conservation device of a subway power supply system adopts a plurality of AC/DC converter modules with the controllable high power factor rectification to replace the conventional rectification circuit, so as to realize the bidirectional energy flow and effectively suppress the harmonic wave of the device by utilizing the high power factor rectification technique, wherein the plurality of AC/DC converter modules are further connected in parallel, so as to expand the capacity of the entire device. At the same time, one or more DC/DC converter modules which are connected in parallel are arranged at the part of the DC traction bus, so that the electric energy generated during the braking process of the train can be partially fed back to the electric network through the AC/DC converter module, and part of the electric energy can be stored in the independent condenser bank through the pressure boost of the DC/DC converter module. The device can fully recover and utilize the braking energy and overcome the shock to the electric network caused by the energy fed back instantaneously through part of the absorbed energy and the feedback energy.
Description
Technical field
The present invention relates to a kind of multi-target integrated control energy-saving apparatus, is a kind of energy saver that applies to electric power supply system for subway.Belong to the power electronics and power drives technical field.
Background technology
Energy savings is a basic fundamental state policy of China, is the important content of national economy sustainable development strategy.In recent years, China's economic development is rapid, and congested traffic condition becomes an obstacle of urban development.In each big city, development and construction fast speed Rail Transit System network are imperative.At present, China is applying for building subway and light rail road in existing 15 cities, and the circuit length overall surpasses 430 kilometers, the about 1,400 hundred million yuan of name coin of construction investment.To have the big and medium-sized cities more than 30 to build up the subway transportation net to China in 2025, subway will become the main traffic networks of big and medium-sized cities.
As large electricity consumer's urban track traffic network, generally adopt straight/alternation to press the type of drive of frequency conversion, the vehicle braked mode is electric braking (regenerative brake)+air brake, and is in service based on electric braking, air brake is auxilliary.Train is in operational process, because station spacing is shorter, launch train, braking are frequent, and braking energy is considerable.Rule of thumb, the energy that the subway regenerative brake produces is except certain proportion (being generally 20% ~ 80%) is absorbed by other adjacent trains, and remainder will mainly be consumed in heat-producing mode by the absorbing resistor of train or be absorbed by the absorption plant on the circuit.Dispatch a car density when low when train, and regenerated energy will be reduced greatly by the probability that other vehicles absorb.The great majority of domestic city track traffic at present adopt the regenerated energy in the resistance energy consumption absorption plant processing train travelling process, and this not only wastes energy, and have increased the burden of air-conditioning blower unit in the station, and city rail construction cost and over-the-road expense are increased.
Also there is subway line to use flywheel energy storage type or capacitor energy storage type braking technology at present, adopt the IGBT inverter that the regenerating braking energy of train is absorbed in fly-wheel motor or the large bulk capacitance, when train needed energy between service area, this device discharged institute's electric energy stored again and utilizes.These technology have certain practical value, but the energy-storage travelling wave tube of flywheel energy storage type braking technology is a fly-wheel motor, because flywheel is in the high speed revolution state for a long time, and mass of flywheel is very big, so the friction energy-dissipating problem is serious, the flywheel work life is short.Consume and all the electric energy on the electric capacity will be discharged behind the full electric energy of the each storage of the absorption equipment of existing capacitor energy storage type braking technology, otherwise next mutual capacitance can't absorb braking energy.These defectives have limited the further improvement of energy-saving effect to a certain extent.
Summary of the invention
Technical matters: the deficiency that the objective of the invention is to overcome existing subway train energy-saving technical scheme, a kind of multi-target integrated control energy-saving apparatus of electric power supply system for subway is proposed, this device can make regenerating braking energy optimized distribution and can be to the harmonic wave of traction substation, idle compensating in system, thereby guarantees the stability of system and improve the quality of power supply when reducing the electric power supply system for subway energy consumption.
Technical scheme: the multi-target integrated control energy-saving apparatus of electric power supply system for subway of the present invention comprises first reactor, second reactor, the 3rd reactor, the 4th reactor, ac/dc unsteady flow module i.e. an AC/DC module, the 2nd AC/DC module, the 3rd AC/DC module, the 4th AC/DC module, public cond group, DC-DC unsteady flow module i.e. a DC/DC module, the 2nd DC/DC module, the 3rd DC/DC module, the 4th DC/DC module, the first independent capacitance device group, the second independent capacitance device group, the 3rd independent capacitance device group, the 4th independent capacitance device group, first sensor, second sensor, the 3rd sensor, and control circuit;
The AC side of a described AC/DC module, the 2nd AC/DC module, the 3rd AC/DC module, the 4th AC/DC module is corresponding respectively to be connected on the end of first reactor, second reactor, the 3rd reactor, the 4th reactor, DC side links to each other with public cond group, and the other end of first reactor, second reactor, the 3rd reactor, the 4th reactor is corresponding respectively to be connected on the secondary side of the 4th voltage transformer, the 5th voltage transformer;
A described DC/DC module, the 2nd DC/DC module, the 3rd DC/DC module, the 4th DC/DC module (primary side be connected on the public cond group, the secondary side first independent capacitance device group, the second independent capacitance device group, the 3rd independent capacitance device group, the 4th independent capacitance device group corresponding respectively and separately link to each other;
AC/DC module, DC/DC number of modules are one or more, the DC side of all AC/DC modules, the primary side of DC/DC module all are parallel on the public cond group, the positive and negative electrode of public cond group is drawn positive direct-current bus, negative dc bus respectively, and DC traction bus voltage grade is 1500V;
Described first sensor, second sensor, the 3rd sensor are installed in respectively in the load branch of each non-traction.
The control circuit of the multi-target integrated control energy-saving apparatus of a kind of electric power supply system for subway of the present invention comprises core controller, DC/DC local controller and AC/DC local controller, and wherein core controller comprises core control function module, energy absorbing centralized control functions module, energy feedback centralized control functions module;
The core control function module of described core controller is that digital signal processor is realized by DSP, its input end is voltage, the current information of other the non-tracted load samplings of subway substation, the sampling of DC traction bus, and the information of voltage of the independent capacitance device group bus of each DC/DC module sampling, these information are obtained by sensor, its mouth links to each other with the energy absorbing centralized control functions module of core controller, and energy output absorbs, release command signal; Simultaneously link to each other energy output feedback, idle, harmonic compensation command signal with the energy feedback centralized control functions module of core controller;
The energy absorbing centralized control functions module of described core controller is that field programmable gate array realizes that its input end links to each other with the core control function module of core controller by FPGA; Its two-way input, mouth link to each other by optical fiber with the DC/DC local controller, the detection signal and the sampled data of input feedback, output upper strata control command signal;
The energy feedback centralized control functions module of described core controller is realized that by FPGA its input end links to each other with the core control function module of core controller; Its two-way input, mouth link to each other by optical fiber with the AC/DC local controller, the detection signal and the sampled data of input feedback, output upper strata control command signal;
Described DC/DC local controller is realized that by DSP its two-way input, mouth link to each other by optical fiber with the energy absorbing centralized control functions module of core controller; The IGBT control output end links to each other with the driving circuit of DC/DC module, the output drive control signal;
Described AC/DC local controller is realized that by DSP its two-way input, mouth link to each other by optical fiber with the energy feedback centralized control functions module of core controller; The IGBT control output end links to each other with the driving circuit of AC/DC module, the output drive control signal.
Beneficial effect:
(1) realizes the regenerative brake of energy, with subway regenerative braking energy feedback electrical network or use capacitance stores, can significantly reduce braking energy consumption;
(2) by partially absorb energy, the part feedback energy overcomes the impact of the instantaneous feedback grid of all regenerating braking energies to electrical network;
(3) realized involving idle compensation, can improve the quality of power supply of subway substation, played energy-conservation effect indirectly traction substation is humorous;
(4) the High Power Factor rectification by self has reduced the harmonic pollution of energy saver to AC network, and plays energy-conservation effect indirectly;
(5) solved in the existing capacitor energy storage type braking technology after storing up full electric energy and must discharge the restriction that consumes, promoted energy-saving effect;
Description of drawings
The scheme of installation of the multi-target integrated control energy-saving apparatus of Fig. 1 electric power supply system for subway,
The control circuit scheme drawing of the multi-target integrated control energy-saving apparatus of Fig. 2 electric power supply system for subway,
The power circuit principle schematic of the multi-target integrated control energy-saving apparatus of Fig. 3 electric power supply system for subway,
Fig. 4 three level AC/DC translation circuits topology scheme drawing,
Fig. 5 three level DC/DC translation circuits topology scheme drawing,
Have among the figure: inlet wire 1, connecting line 2, switch 3 ~ 9, ac bus 10, positive direct-current bus 11, negative dc bus 12, voltage transformer 13 ~ 17, sensor 18 ~ 20, reactor 21 ~ 24, AC/DC module 25 ~ 28, public cond group 29, DC/DC module 30 ~ 33, independent capacitance device group 34 ~ 37, control circuit 38, locomotive 39, voltage transformer primary side 40 ~ 41, Circuit Fault on Secondary Transformer 42 ~ 45, inductance 46 ~ 50, cond group 51 ~ 54, igbt (IGBT) 55 ~ 70, clamping diode 71 ~ 76.
The specific embodiment
Adopt the AC/DC unsteady flow module of controlled High Power Factor rectification to replace traditional rectifying circuit,, and can suppress self harmonic wave by the High Power Factor commutation technique with the two-way flow of realization energy.The DC side of a plurality of AC/DC modules is connected on the public cond group capacity with expansion instrument, the DC traction bus promptly from then on cond group positive and negative electrode draw.Simultaneously at DC traction bus place the DC/DC changer of one or more parallel connections is housed, the part power storage that will absorb by boosting is in the cond group.This energy that produces when just making locomotive brake can part feed back to electrical network by the AC/DC module, and part to independent capacitance device group, has overcome the impact of the instantaneous feedback grid of all energy to electrical network by the DC/DC module stores.And adopt the control method of multiple goal synthesis energy saving to control two parts circuit, and optimize the distribution of energy in system, the consumption of braking energy is significantly reduced; Control system also detects the harmonic wave and the reactive component of other non-tracted load of traction substation, trigger AC/DC unsteady flow module and under the situation that ability allows, carry out inversion this part harmonic wave and idle compensating, avoid impact and pollution, to reach the purpose of indirect energy saving to electrical network.
Following AC/DC module with three level, DC/DC module are example, introduce specific embodiments of the present invention:
As shown in Figure 1, the multi-target integrated control energy-saving apparatus of electric power supply system for subway comprises reactor 21 ~ 24, ac/dc unsteady flow module (AC/AC module) 25 ~ 28, public cond group 29, DC-DC unsteady flow module (DC/DC module) 30 ~ 33, independent capacitance device group 34 ~ 37, sensor 18 ~ 20, and control circuit 38.The AC side of AC/DC module 25 ~ 28 is connected on the reactor 21～24, and DC side links to each other with public cond group 29.The other end of reactor 21 ~ 24 is connected on the secondary side of voltage transformer 16 ~ 17.The primary side of DC/DC module 30 ~ 33 is connected on the public cond group 29, and secondary side independent capacitance device group 34 ~ 37 corresponding respectively and separately links to each other.AC/DC module, DC/DC number of modules in parallel are one or more, by the power decision of reality.
Alternating current in the electrical network is incorporated into energy saver by reactor 21 ~ 24 after voltage transformer 16 ~ 17 step-downs.AC/DC module 25 ~ 28 is drawn from positive direct-current bus 11, negative dc bus 12 after alternating current is become direct current (DC), as the driving electricity consumption of locomotive 39.The electric energy that locomotive 39 glancing impacts produce can feed back to electrical network by AC/DC module 25 ~ 28, after also can boosting by DC/DC module 30 ~ 33 power storage is arrived in the independent capacitance device group 34 ~ 37.In order to improve the quality of power supply, utilize sensor 18 ~ 20 to gather electric current, the information of voltage of other non-tracted load of subway substation, as energy saver compensation harmonic, idle foundation.The number of sensor depends on the load branch circuit number of non-traction.
The control circuit scheme drawing of the multi-target integrated control energy-saving apparatus of whole electric power supply system for subway as shown in Figure 2.In view of the module of control numerous, the complexity of controlled object, the control of system is divided into 3 layers, top layer is the core key-course, is responsible for coordinating the energy distribution of energy absorbing and energy feedback two parts module; Interlayer is respectively the centralized control of energy absorbing and energy feedback, is responsible for the pulse distribution of power electronic devices and the fault handling of power model; The bottom is the local controller of power model, is responsible for receiving transmitting order to lower levels, the data sampling on upper strata, controls the power device of native system and uploads necessary control detection signal.
Control circuit comprises core controller (being made of core control, energy absorbing centralized control, energy feedback centralized control three big functional modules), DC/DC local controller and AC/DC local controller on forming.
The core control function module of core controller is realized by DSP (digital signal processor); Its input end is voltage, the current information of other the non-tracted load samplings of subway substation, the sampling of DC traction bus, and the independent capacitance device group information of voltage of each DC/DC module, and these information are obtained by sensor; Its mouth links to each other with energy absorbing centralized control functions module, and energy output absorbs, release command signal, links to each other energy output feedback, idle, harmonic compensation command signal with energy feedback centralized control functions module simultaneously.
The energy absorbing centralized control functions module of core controller is realized by FPGA (field programmable gate array); Its input end links to each other with the core control function module; Its two-way input, mouth link to each other by optical fiber with the DC/DC local controller, the detection signal and the sampled data of input feedback, output upper strata control command signal.The energy feedback centralized control functions module of core controller is realized by FPGA; Its input end links to each other with the core control function module; Its two-way input, mouth link to each other by optical fiber with the AC/DC local controller, the detection signal and the sampled data of input feedback, output upper strata control command signal.The DC/DC local controller is realized by DSP; Its two-way input, mouth link to each other by optical fiber with energy absorbing centralized control functions module; The IGBT control output end links to each other with the driving circuit of DC/DC module, the output drive control signal.The AC/DC local controller is realized by DSP; Its two-way input, mouth link to each other by optical fiber with energy feedback centralized control functions module; The IGBT control output end links to each other with the driving circuit of AC/DC module, the output drive control signal.
In conjunction with Fig. 3 ~ Fig. 5 the main circuit topology of device is described further:
In Fig. 3, voltage transformer 16 ~ 17 primary sides 40 ~ 41 are received on the 10kV AC network, and voltage transformer 16 ~ 17 secondary sides 42 ~ 45 link to each other with the AC side of the AC/DC module of three level by reactor 21 ~ 24.The positive and negative end of public cond group 29 is drawn positive direct-current bus 11, negative dc bus 12 respectively.Adopt a plurality of three level AC/DC modules can realize performance-oriented rectification, the voltage stabilization that makes the DC traction bus is at 1500V.Three all level AC/DC modules adopt a public cond group 29.The advantage of this topology is not need to change two voltage transformers of original traction substation, can save cost.
Figure 4 shows that the circuit topology of three level AC/DC modules, is a specific embodiments of AC/DC module topology of the present invention.This topology is the voltage type PWM rectifier of diode clamp, and each brachium pontis is made of two full-control type device IGBT series connection, and the mid point N of the mid point of two series connection devices of each half-bridge by the cond group 51 ~ 52 of clamping diode 71 ~ 76 and DC side links to each other.Its advantage is that circuit is easy to control, and main switching device only bears the bus vdc of half, is suitable for the occasion of high-voltage large-capacity.Can make the received current floating voltage of rectifier in addition by the break-make of reasonable each IGBT of control, improve its power factor, restraining device itself is injected into the harmonic wave in the AC network.Simultaneously, by by the inversion of DC side, finally can realize the function of harmonic wave, reactive-load compensation, to improve the quality of power supply in the traction substation to AC side.
Figure 5 shows that the circuit topology of three level DC/DC modules, is a specific embodiments of DC/DC module topology of the present invention.In view of the traction bus vdc grade that has subway now is 1500V, so this circuit adopts bidirectional three-level Buck-Boost type DC/DC translation circuit.This circuit has switch tube voltage stress and has only 1/2 of traction bus vdc, and output inductor is little, the advantage that dynamic response is fast.This circuit working was at the Buck decompression mode when locomotive 39 glancing impacts charged to cond group 53 (being independent capacitance device group 34 ~ 37), and this circuit working is at the Boost boost mode when 53 discharges of cond group.The inductance 49 ~ 50 of three electrical level Bidirectional DC-DC Converter has only 1/4 of two electrical level Bidirectional DC-DC Converter, realize that this advantage must guarantee that IGBT adopts the drive signal of staggered control and complementary drive: IGBT-67 and IGBT-68 to differ 180 °, the drive signal of IGBT-69 and IGBT-70 differs 180 °.
Claims (2)
1. the multi-target integrated control energy-saving apparatus of an electric power supply system for subway, it is characterized in that: this device comprises first reactor (21), second reactor (22), the 3rd reactor (23), the 4th reactor (24), ac/dc unsteady flow module i.e. an AC/DC module (25), the 2nd AC/DC module (26), the 3rd AC/DC module (27), the 4th AC/DC module (28), public cond group (29), DC-DC unsteady flow module i.e. a DC/DC module (30), the 2nd DC/DC module (31), the 3rd DC/DC module (32), the 4th DC/DC module (33), the first independent capacitance device group (34), the second independent capacitance device group (35), the 3rd independent capacitance device group (36), the 4th independent capacitance device group (37), first sensor (18), second sensor (19), the 3rd sensor (20), and control circuit;
The AC side of a described AC/DC module (25), the 2nd AC/DC module (26), the 3rd AC/DC module (27), the 4th AC/DC module (28) correspondence respectively is connected on the end of first reactor (21), second reactor (22), the 3rd reactor (23), the 4th reactor (24), DC side links to each other with public cond group (29), and the other end of first reactor (21), second reactor (22), the 3rd reactor (23), the 4th reactor (24) correspondence respectively is connected on the secondary side of the 4th voltage transformer (16), the 5th voltage transformer (17);
The primary side of a described DC/DC module (30), the 2nd DC/DC module (31), the 3rd DC/DC module (32), the 4th DC/DC module (33) is connected on the public cond group (29), and the secondary side first independent capacitance device group (34), the second independent capacitance device group (35), the 3rd independent capacitance device group (36), the 4th independent capacitance device group (37) corresponding respectively and separately link to each other;
The primary side of the DC side of the one AC/DC module (25), the 2nd AC/DC module (26), the 3rd AC/DC module (27), the 4th AC/DC module (28), a DC/DC module (30), the 2nd DC/DC module (31), the 3rd DC/DC module (32), the 4th DC/DC module (33) all is parallel on the public cond group (29), the positive and negative electrode of public cond group (29) is drawn positive direct-current bus (11), negative dc bus (12) respectively, and DC traction bus voltage grade is 1500V;
Described first sensor (18), second sensor (19), the 3rd sensor (20) are installed in respectively in each non-tracted load branch.
2. the control circuit of the multi-target integrated control energy-saving apparatus of a kind of electric power supply system for subway according to claim 1, it is characterized in that: described control circuit comprises core controller, DC/DC local controller and AC/DC local controller, and wherein core controller comprises core control function module, energy absorbing centralized control functions module, energy feedback centralized control functions module;
The core control function module of described core controller is that digital signal processor is realized by DSP, its input end is voltage, the current information of the non-tracted load sampling of subway substation, the sampling of DC traction bus, and the information of voltage of the independent capacitance device group bus of each DC/DC module sampling, these information are obtained by sensor, its mouth links to each other with the energy absorbing centralized control functions module of core controller, and energy output absorbs, release command signal; Simultaneously link to each other energy output feedback, idle, harmonic compensation command signal with the energy feedback centralized control functions module of core controller;
The energy absorbing centralized control functions module of described core controller is that field programmable gate array realizes that its input end links to each other with the core control function module of core controller by FPGA; Its two-way input, mouth link to each other by optical fiber with the DC/DC local controller, the detection signal and the sampled data of input feedback, output upper strata control command signal;
The energy feedback centralized control functions module of described core controller is realized that by FPGA its input end links to each other with the core control function module of core controller; Its two-way input, mouth link to each other by optical fiber with the AC/DC local controller, the detection signal and the sampled data of input feedback, output upper strata control command signal;
Described DC/DC local controller is realized that by DSP its two-way input, mouth link to each other by optical fiber with the energy absorbing centralized control functions module of core controller; The IGBT control output end links to each other with the driving circuit of DC/DC module, the output drive control signal;
Described AC/DC local controller is realized that by DSP its two-way input, mouth link to each other by optical fiber with the energy feedback centralized control functions module of core controller; The IGBT control output end links to each other with the driving circuit of AC/DC module, the output drive control signal.
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| CN200810156537A CN100581869C (en) | 2008-09-28 | 2008-09-28 | Multi-target comprehensive control energy-saving device for subway power supply system |
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| CN200810156537A CN100581869C (en) | 2008-09-28 | 2008-09-28 | Multi-target comprehensive control energy-saving device for subway power supply system |
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| CN100581869C true CN100581869C (en) | 2010-01-20 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101847867A (en) * | 2010-06-10 | 2010-09-29 | 西南交通大学 | Metro traction power supply device with over-voltage suppression function |
| EP2915693B1 (en) * | 2012-10-31 | 2020-09-16 | Kabushiki Kaisha Toshiba | Power management device and power management system |
| CN103227583B (en) * | 2013-04-26 | 2015-09-02 | 中国能源建设集团江苏省电力设计院有限公司 | A kind of hot swap type converter system for new forms of energy and energy-storage system |
| CN104037752B (en) * | 2014-05-14 | 2017-01-25 | 上海磊华船舶工程有限公司 | Sensor power-supplying device used for ship |
| CN104600692B (en) * | 2014-12-29 | 2017-01-11 | 哈尔滨工业大学 | Natural gas power station direct current micro-grid hybrid CPU multiple bidirectional DC port device and implementation method thereof |
| CN104901579B (en) * | 2015-06-26 | 2018-02-27 | 青岛海能阿尔派轨道电力设备工程科技有限公司 | A kind of four-quadrant flow-changeable regenerates energy inversion feedback device |
| CN105048854A (en) * | 2015-07-21 | 2015-11-11 | 珠海格力电器股份有限公司 | Three-phase non-isolated grid-connected converter and air conditioning system |
| CN106100000A (en) * | 2016-07-08 | 2016-11-09 | 许继集团有限公司 | Converter plant, urban rail tractive power supply system and control method thereof |
| CN107809131A (en) * | 2016-09-06 | 2018-03-16 | 伊顿制造（格拉斯哥）有限合伙莫尔日分支机构 | Uninterrupted power source |
| CN108667002B (en) * | 2017-03-30 | 2021-04-20 | 比亚迪股份有限公司 | Rail transit traction system and energy feedback system thereof |
| CN108448602A (en) * | 2018-03-30 | 2018-08-24 | 中车青岛四方车辆研究所有限公司 | Urban track traffic regenerating braking energy energy conserving system |
| CN108539772B (en) * | 2018-03-30 | 2020-06-05 | 中车青岛四方车辆研究所有限公司 | Urban rail transit regenerative braking energy control and distribution system and method |
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Assignee: Jiangyin Huaming Electric Equipment Co., Ltd. Assignor: Southeast University Contract record no.: 2012320000629 Denomination of invention: Multi-target integrated control energy-saving apparatus of subway electric power supply system Granted publication date: 20100120 License type: Exclusive License Open date: 20090304 Record date: 20120522 |
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