CN105790274A - Power flow control device and control method for run-through power supply system converter type traction substation - Google Patents
Power flow control device and control method for run-through power supply system converter type traction substation Download PDFInfo
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- CN105790274A CN105790274A CN201610131765.8A CN201610131765A CN105790274A CN 105790274 A CN105790274 A CN 105790274A CN 201610131765 A CN201610131765 A CN 201610131765A CN 105790274 A CN105790274 A CN 105790274A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
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Abstract
The invention provides a power flow control device and method for a run-through power supply system converter type traction substation, and relates to the field of power supply of an AC electrical railway. The power flow control device comprises a transformer type traction substation and an electrical railway run-through power supply system, wherein the electrical railway run-through power supply system comprises a plurality of converter type traction substations, wherein the input end of the control device is connected with a traction feed current transformer and a traction bus voltage transformer of the converter type substation, and is connected with a traction feed current transformer and a traction bus voltage transformer of the transformer type substation through an optical fiber, and the output end of the control device is connected with an AC-DC-AC converter control end of the converter type substation. The control method comprises the following step of adjusting the power of the converter type substation within an allowable voltage range of a traction bus by taking the current, the voltage and the power data of the transformer type substation as references so that the converter type substation and the transformer type substation approach the target of a train load on a traction network according to capacity proportion distribution. The control device is mainly used for the electrical railway run-through power supply system.
Description
Technical field
The present invention relates to attached wires of AC electrified railway for electrical domain, particularly relate to inverter type traction substation load flow regulation technology in through electric power system.
Background technology
The commonly used single phase industrial frequency AC system powered by municipal power supply system of electric railway, for making single-phase traction load equilibrium assignmen as far as possible in three-phase electrical power system, electric railway often adopts the scheme of rotation phase sequence, point phase switched-mode power supply.Divide and isolate with neutral section insulator between the adjacent service area at phase subregion place, form electricity point phase, an abbreviation point phase.The traditional approach of the logical phase splitting of electric locomotive is manual undue phase, relies primarily on driver and is performed manually by and moves back level, close auxiliary unit, disconnected main circuit breaker, cross neutral section, again co-host break road device by train inertia, close auxiliary unit and then recover traction power to complete undue phase.This artificial commutation mode easily causes the charged logical phase splitting of electric locomotive (undue phase) and occurs arcing to burn out overhead contact line parts, even results in the accidents such as phase fault.Continuous rising along with train speed, have employed automatic passing over of neutral section technology, mainly there is automatically switch on undue phase, vehicle-mounted automatic passing over of neutral section and post automatic passing over of neutral section etc. of floor switches several, but still suffer from the electric process of transient state of the logical phase splitting of train in switch switching, it is easily generated bigger switching overvoltage or overcurrent, cause the accidents such as Traction networks and mobile unit scaling loss, even result in automatic passing over of neutral section operation failure, affect power supply reliability and safe train operation.Therefore, electricity point phase link is link the weakest in whole tractive power supply system, the bottleneck that train becomes high-speed railway too mutually or even whole electric railway traction is powered.
Theory and practice shows to adopt single-phase traction transformer or combination type cophase supply technology can cancel the electricity point phase in its exit at traction substation, the electricity point phase at this place can be cancelled in the adopted two-side feeding technology of subregion, thus eliminating power supply bottleneck, improve railway power supply ability and transport capacity.It should be noted that, electric railway subregion two-side feeding be similar to the cyclization of electrical network, its application is subject to the restriction of grid conditions, the electric pressure of such as electrical network and Traction networks is closer to, euqalizing current is bigger, two-side feeding (cyclization) etc. should not be implemented, additionally, when power taking needs cancellation electricity point to implement through power supply mutually in the traction substation of two electrical networks not being connected, obviously two-side feeding (cyclization) technology can not be adopted, therefore, it is desirable to provide the load flow regulation system of a kind of inverter type traction substation about this type of through electric power system and load flow regulation method thereof.
Summary of the invention
It is an object of the invention to provide a kind of through electric power system inverter type traction substation load flow regulation device, it can efficiently solve the plant issue of inverter type traction substation load flow regulation in this through electric power system.
It is a further object to provide a kind of through electric power system inverter type traction substation load flow regulation method, it can efficiently solve the technical problem of inverter type traction substation load flow regulation in this through electric power system.
This invention address that its technical problem, the technical scheme adopted is: a kind of through electric power system inverter type traction substation load flow regulation device, including traction substation and Traction networks OCS, the former limit of traction substation connects three phase network ABC, secondary limit is connected to Traction networks OCS through traction bus TB and tractive feeder F, and the Traction networks OCS between each traction substation is connected to implement electric railway with connecting power supply；This through electric power system arranges the transformer type traction substation of a use tractive transformer TT, is designated as electric substation TS, if its capacity is S0；N seat is set and uses the inverter type traction substation of transformator T series connection AC-DC-AC converter ADA, i-th inverter type traction substation is designated as electric substation CSiIf its capacity is Si, i=1,2 ..., n, n >=1；The feeder breaker K summation current transformer CT of electric substation TS0Series connection accesses the tractive feeder F of electric substation TS, voltage transformer pt0It is connected on its traction bus TB；Electric substation CSiFeeder breaker K summation current transformer CTiSeries connection accesses electric substation CSiTractive feeder F, voltage transformer ptiIt is connected on its traction bus TB；Electric substation CSiLoad flow regulation device by electric substation CSiLoad flow regulation device PSi, this electric substation CSiCurrent Transmiti, voltage transformer ptiAnd the Current Transmit of fiber optic network FO and electric substation TS0And voltage transformer pt0Collectively form；Electric substation CSiLoad flow regulation device PSiInput connects this electric substation CSiCurrent TransmitiAnd voltage transformer pti, the Current Transmit of electric substation TS is connected by fiber optic network FO0And voltage transformer pt0, this load flow regulation device PSiOutfan connects electric substation CSiAC-DC-AC converter ADAiControl end.
Another object of the present invention is achieved through the following technical solutions: a kind of through electric power system inverter type traction substation load flow regulation method, load flow regulation device PSiAccording to the fiber optic network FO electric substation's TS Current Transmit transmitted0And voltage transformer pt0The apparent energy s recorded0With electric substation's CSi Current TransmitiAnd voltage transformer ptiThe apparent energy s recordediRelatively, again through electric substation CSiAC-DC-AC converter ADAiControl end adjust its apparent energy siObject function is approached in traction busbar voltage allowed band:
si:s0=Si:S0, i=1,2 ..., n, n >=1
I.e. regulation and control electric substation CSiThe apparent energy s that AC-DC-AC converter producesiApparent energy s with electric substation TS0Ratio approach electric substation CSiCapacity SiWith electric substation TS capacity S0Ratio.
Load flow regulation method, a kind of through electric power system inverter type traction substation load flow regulation method, load flow regulation device PS can also be simplified furtheriAccording to the fiber optic network FO electric substation's TS Current Transmit transmitted0The feeder current I recorded0With electric substation CSiCurrent TransmitiThe feeder current I recordediRelatively, again through electric substation CSiAC-DC-AC converter ADAiControl end adjust its feeder current IiObject function is approached in traction busbar voltage allowed band:
Ii:I0=Si:S0, i=1,2 ..., n, n >=1
I.e. regulation and control electric substation CSiThe feeder current I that AC-DC-AC converter producesiFeeder current I with electric substation TS0Ratio approach electric substation CSiCapacity SiWith electric substation TS capacity S0Ratio.
The operation principle of the present invention is: utilize fiber optic network transmission capacity advantage big, fireballing and data synchronization technology to obtain the synchrodata of strange land traction substation, with the electric current of a transformer type traction substation (electric substation TS), voltage and power data for reference, it is considered to transformer type traction substation (electric substation TS) and inverter type traction substation (electric substation CS1) the economy that determines of capacity power factor, and regulate the speed far above train load pace of change, technical factor that following feature is strong based on AC-DC-AC converter, in traction busbar voltage allowed band, make electric substation TS and electric substation CS1Approach by the target of train load on its capacity pro rate Traction networks, in like manner, the 3rd inverter type traction substation (electric substation CS2) with reference also to electric substation TS and make electric substation CS2The target by its both capacity pro rates share is approached, simultaneously electric substation CS with electric substation TS1By electric substation CS1Its share is redistributed, thus approaching electric substation CS with electric substation TS capacity ratio target1, electric substation CS2Pressing, with electric substation TS three, the target that its capacity pro rate such a is new, the rest may be inferred by analogy.
Compared with prior art, the invention has the beneficial effects as follows:
One, the load flow regulation system of the present invention can accurately, reasonably complete this inverter type traction substation in the load flow regulation of through electric power system and distribution by the data of an inverter type traction substation and a transformer type traction substation, separate at the load flow regulation of this through electric power system with other (if any) inverter type traction substations, unrelated.
Two, the regulation and control method of power (electric current) ratio of the present invention is not adopted the impact of electric substation's regulation and control method of AC-DC-AC converter by other (if any) in through electric power system, not by the impact of train position in system with quantity and operating condition (traction or braking) thereof yet.
Three, compared with traditional current transformer sagging curve control method, the power (electric current) of the present invention is sensitiveer than regulation and control method, more accurate, uses wider；Compared with the flow control method that existing traction substation combination type cophase supply adopts, the power (electric current) of the present invention can complete the load flow regulation of inverter type traction substation than regulation and control method when train total load in not obtaining (also cannot obtain) this through electric power system, and not by the impact of train position with quantity and operating condition (traction or braking) thereof, not by the impact of other (if any) inverter type traction substations regulation and control method in system yet.
Four, present configuration is simple, and superior performance, advanced technology, method are reliable, it is easy to implement.
Accompanying drawing explanation
Fig. 1 is through electric power system and the inverter type traction substation load flow regulation device configuration structure schematic diagram of the embodiment of the present invention.
Fig. 2 is the inverter type traction substation load flow regulation apparatus structure schematic diagram of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment
Fig. 1 illustrates, the through electric power system of the embodiment of the present invention and inverter type traction substation load flow regulation device configuration structure schematic diagram: this through electric power system is made up of traction substation and Traction networks OCS etc., the former limit of traction substation connects three phase network ABC, secondary limit is connected to Traction networks OCS through traction bus TB and tractive feeder F, and the Traction networks OCS between each traction substation is connected to implement electric railway with connecting power supply；This through electric power system comprises a transformer type traction substation, uses tractive transformer TT to power or combination type cophase supply, is designated as electric substation TS, if its capacity is S0, also have n seat inverter type traction substation, in series by transformator T and AC-DC-AC converter ADA, i-th inverter type traction substation is designated as electric substation CSiIf its capacity is Si, i=1,2 ..., n, n >=1, electric substation CSiLoad flow regulation device be designated as PSi；The tractive feeder F of electric substation TS seals in feeder breaker K summation current transformer CT0, its traction bus TB arranges voltage transformer pt0；Electric substation CSiTractive feeder F seal in feeder breaker K summation current transformer CTi, its traction bus TB arranges voltage transformer pti；In figure, L1, L2, L3 are train；Electric substation CSiLoad flow regulation device by this electric substation CSiLoad flow regulation device PSi, Current Transmiti, voltage transformer ptiAnd the Current Transmit of fiber optic network FO and electric substation TS0And voltage transformer pt0Collectively constitute；Electric substation CSiLoad flow regulation device PSiInput connects this electric substation CSiCurrent TransmitiAnd voltage transformer pti, the Current Transmit of electric substation TS is connected by fiber optic network FO0And voltage transformer pt0, this load flow regulation device PSiOutfan connects electric substation CSiAC-DC-AC converter ADAiControl end, as shown in phantom in FIG., arrow represents information flow direction.
As electric substation CSiDuring more than 2, as far as possible electric substation TS should be positioned close to the position in the middle of system.
Fig. 2 is the inverter type traction substation load flow regulation apparatus structure schematic diagram of the embodiment of the present invention.As also shown in Figure 1, electric substation CSiLoad flow regulation device by this electric substation CSiLoad flow regulation device PSi, Current Transmiti, voltage transformer ptiAnd the Current Transmit of fiber optic network FO and electric substation TS0And voltage transformer pt0Collectively constitute；Electric substation CSiLoad flow regulation device PSiInput connects this electric substation CSiCurrent TransmitiAnd voltage transformer pti, the Current Transmit of electric substation TS is connected by fiber optic network FO0And voltage transformer pt0, this load flow regulation device PSiOutfan connects electric substation CSiAC-DC-AC converter ADAiControl end.
The load flow regulation method of the inverter type traction substation of through electric power system is: load flow regulation device PSiAccording to the fiber optic network FO electric substation's TS Current Transmit transmitted0And voltage transformer pt0The apparent energy s recorded0With electric substation's CSi Current TransmitiAnd voltage transformer ptiThe apparent energy s recordediRelatively, again through electric substation CSiAC-DC-AC converter ADAiControl end adjust its apparent energy siObject function is approached in traction busbar voltage allowed band:
si:s0=Si:S0, i=1,2 ..., n, n >=1
I.e. regulation and control electric substation CSiThe apparent energy s that AC-DC-AC converter producesiApparent energy s with electric substation TS0Ratio approach electric substation CSiCapacity SiWith electric substation TS capacity S0Ratio.
Load flow regulation method can also be simplified further, it may be assumed that load flow regulation device PSiAccording to the optical fiber FO electric substation's TS Current Transmit transmitted0The feeder current I recorded0With electric substation CSiCurrent TransmitiThe feeder current I recordediRelatively, again through electric substation CSiAC-DC-AC converter ADAiControl end adjust its feeder current IiObject function is approached in traction busbar voltage allowed band:
Ii:I0=Si:S0, i=1,2 ..., n, n >=1
I.e. regulation and control electric substation CSiThe feeder current I that AC-DC-AC converter producesiFeeder current I with electric substation TS0Ratio approach electric substation CSiCapacity SiWith electric substation TS capacity S0Ratio.
The operation principle of the present invention is: utilize fiber optic network transmission capacity advantage big, fireballing and data synchronization technology to obtain the synchrodata of strange land traction substation, with the electric current of a transformer type traction substation (electric substation TS), voltage and power data for reference, it is considered to adopt transformer type traction substation (electric substation TS) and inverter type traction substation (electric substation CS1) the economy that determines of capacity power factor, and regulate the speed far above train load pace of change, technical factor that following feature is strong based on AC-DC-AC converter, in traction busbar voltage allowed band, make electric substation TS and electric substation CS1Approach by the target of train load on its capacity pro rate Traction networks, in like manner, the 3rd traction substation (the electric substation CS adopting (transformator adds) AC-DC-AC converter2) with reference also to electric substation TS and make electric substation CS2The target by its both capacity pro rates share is approached, simultaneously electric substation CS with electric substation TS1By electric substation CS1Its share is redistributed, thus approaching electric substation CS with electric substation TS capacity ratio target1, electric substation CS2Pressing, with electric substation TS three, the target that its capacity pro rate such a is new, the rest may be inferred by analogy.
Claims (3)
1. a through electric power system inverter type traction substation load flow regulation device, including traction substation and Traction networks OCS, the former limit of traction substation connects three phase network ABC, secondary limit is connected to Traction networks OCS through traction bus TB and tractive feeder F, and the Traction networks OCS between each traction substation is connected to implement electric railway with connecting power supply；It is characterized in that: this through electric power system arranges the transformer type traction substation of a use tractive transformer TT, is designated as electric substation TS, if its capacity is S0；N seat is set and uses the inverter type traction substation of transformator T series connection AC-DC-AC converter ADA, i-th inverter type traction substation is designated as electric substation CSiIf its capacity is Si, i=1,2 ..., n, n >=1；The feeder breaker K summation current transformer CT of electric substation TS0Series connection accesses the tractive feeder F of electric substation TS, voltage transformer pt0It is connected on its traction bus TB；Electric substation CSiFeeder breaker K summation current transformer CTiSeries connection accesses electric substation CSiTractive feeder F, voltage transformer ptiIt is connected on its traction bus TB；Electric substation CSiLoad flow regulation device by electric substation CSiLoad flow regulation device PSi, this electric substation CSiCurrent Transmiti, voltage transformer ptiAnd the Current Transmit of fiber optic network FO and electric substation TS0And voltage transformer pt0Collectively form；Electric substation CSiLoad flow regulation device PSiInput connects this electric substation CSiCurrent TransmitiAnd voltage transformer pti, the Current Transmit of electric substation TS is connected by fiber optic network FO0And voltage transformer pt0, this load flow regulation device PSiOutfan connects electric substation CSiAC-DC-AC converter ADAiControl end.
2. a through electric power system inverter type traction substation load flow regulation method, it is characterised in that: load flow regulation device PSiAccording to the fiber optic network FO electric substation's TS Current Transmit transmitted0And voltage transformer pt0The apparent energy s recorded0With electric substation's CSi Current TransmitiAnd voltage transformer ptiThe apparent energy s recordediRelatively, again through electric substation CSiAC-DC-AC converter ADAiControl end adjust its apparent energy siObject function is approached in traction busbar voltage allowed band:
si:s0=Si:S0, i=1,2 ..., n, n >=1
I.e. regulation and control electric substation CSiThe apparent energy s that AC-DC-AC converter producesiApparent energy s with electric substation TS0Ratio approach electric substation CSiCapacity SiWith electric substation TS capacity S0Ratio.
3. one according to claim 2 through electric power system inverter type traction substation load flow regulation method, it is characterised in that: load flow regulation device PSiAccording to the fiber optic network FO electric substation's TS Current Transmit transmitted0The feeder current I recorded0With electric substation CSiCurrent TransmitiThe feeder current I recordediRelatively, again through electric substation CSiAC-DC-AC converter ADAiControl end adjust its feeder current IiObject function is approached in traction busbar voltage allowed band:
Ii:I0=Si:S0, i=1,2 ..., n, n >=1
I.e. regulation and control electric substation CSiThe feeder current I that AC-DC-AC converter producesiFeeder current I with electric substation TS0Ratio approach electric substation CSiCapacity SiWith electric substation TS capacity S0Ratio.
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| CN201610131765.8A CN105790274B (en) | 2016-03-09 | 2016-03-09 | A kind of perforation electric power system inverter type traction substation load flow regulation device and its regulation and control method |
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| CN201610131765.8A CN105790274B (en) | 2016-03-09 | 2016-03-09 | A kind of perforation electric power system inverter type traction substation load flow regulation device and its regulation and control method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667041A (en) * | 2018-06-15 | 2018-10-16 | 西南交通大学 | A kind of the negative phase-sequence centralized compensation control system and its control method of traction substation group |
| CN108923440A (en) * | 2018-09-12 | 2018-11-30 | 西南交通大学 | A kind of negative sequence compensation measure and control device of traction substation group, system and method |
| CN109532567A (en) * | 2019-01-09 | 2019-03-29 | 西南交通大学 | A kind of three rail electric power supply control system of short stator magnetic-levitation train |
| CN109728592A (en) * | 2019-02-28 | 2019-05-07 | 西南交通大学 | A kind of electric railway traction power supply system |
| CN110979105A (en) * | 2019-12-24 | 2020-04-10 | 中铁二院工程集团有限责任公司 | Design method for external power supply access scheme of through bilateral traction power supply system |
| CN112848976A (en) * | 2021-03-01 | 2021-05-28 | 中国铁路设计集团有限公司 | Networked traction power supply system based on integration of three networks |
| CN113076660A (en) * | 2021-04-28 | 2021-07-06 | 中铁二院工程集团有限责任公司 | Electrified railway circulation calculation method adopting hybrid power supply system bilateral power supply mode |
| CN113077979A (en) * | 2021-04-26 | 2021-07-06 | 中铁二院工程集团有限责任公司 | Adjustable traction transformer for flexible through bilateral power supply system and balanced current suppression method |
| CN113270868A (en) * | 2021-05-24 | 2021-08-17 | 西南交通大学 | Dynamic load flow calculation method for power supply system of alternating current electrified railway train |
| CN114336640A (en) * | 2022-03-17 | 2022-04-12 | 西南交通大学 | Intelligent three-phase traction power supply system and power flow control method thereof |
| CN114336643A (en) * | 2022-03-17 | 2022-04-12 | 西南交通大学 | System for utilizing passing power of bilateral power supply traction network of regional station and control method |
| CN114336639A (en) * | 2022-03-17 | 2022-04-12 | 西南交通大学 | Intelligent traction substation and power flow control method thereof |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667041A (en) * | 2018-06-15 | 2018-10-16 | 西南交通大学 | A kind of the negative phase-sequence centralized compensation control system and its control method of traction substation group |
| CN108667041B (en) * | 2018-06-15 | 2023-10-13 | 西南交通大学 | Negative sequence centralized compensation control system of traction substation group and control method thereof |
| CN108923440A (en) * | 2018-09-12 | 2018-11-30 | 西南交通大学 | A kind of negative sequence compensation measure and control device of traction substation group, system and method |
| CN109532567A (en) * | 2019-01-09 | 2019-03-29 | 西南交通大学 | A kind of three rail electric power supply control system of short stator magnetic-levitation train |
| CN109532567B (en) * | 2019-01-09 | 2023-10-13 | 西南交通大学 | Three-rail power supply control system of short-stator magnetic levitation train |
| CN109728592A (en) * | 2019-02-28 | 2019-05-07 | 西南交通大学 | A kind of electric railway traction power supply system |
| CN110979105B (en) * | 2019-12-24 | 2022-06-14 | 中铁二院工程集团有限责任公司 | Design method for external power supply access scheme of through bilateral traction power supply system |
| CN110979105A (en) * | 2019-12-24 | 2020-04-10 | 中铁二院工程集团有限责任公司 | Design method for external power supply access scheme of through bilateral traction power supply system |
| CN112848976A (en) * | 2021-03-01 | 2021-05-28 | 中国铁路设计集团有限公司 | Networked traction power supply system based on integration of three networks |
| CN113077979A (en) * | 2021-04-26 | 2021-07-06 | 中铁二院工程集团有限责任公司 | Adjustable traction transformer for flexible through bilateral power supply system and balanced current suppression method |
| CN113076660A (en) * | 2021-04-28 | 2021-07-06 | 中铁二院工程集团有限责任公司 | Electrified railway circulation calculation method adopting hybrid power supply system bilateral power supply mode |
| CN113270868A (en) * | 2021-05-24 | 2021-08-17 | 西南交通大学 | Dynamic load flow calculation method for power supply system of alternating current electrified railway train |
| CN113270868B (en) * | 2021-05-24 | 2022-06-24 | 西南交通大学 | Dynamic load flow calculation method for power supply system of alternating current electrified railway train |
| CN114336643B (en) * | 2022-03-17 | 2022-05-17 | 西南交通大学 | System for utilizing passing power of bilateral power supply traction network of regional station and control method |
| CN114336639B (en) * | 2022-03-17 | 2022-05-24 | 西南交通大学 | Intelligent traction substation and power flow control method thereof |
| CN114336639A (en) * | 2022-03-17 | 2022-04-12 | 西南交通大学 | Intelligent traction substation and power flow control method thereof |
| CN114336643A (en) * | 2022-03-17 | 2022-04-12 | 西南交通大学 | System for utilizing passing power of bilateral power supply traction network of regional station and control method |
| CN114336640A (en) * | 2022-03-17 | 2022-04-12 | 西南交通大学 | Intelligent three-phase traction power supply system and power flow control method thereof |
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