CN104155553A - Locomotive electric power feedback equipment test system and test method - Google Patents
Locomotive electric power feedback equipment test system and test method Download PDFInfo
- Publication number
- CN104155553A CN104155553A CN201410398420.XA CN201410398420A CN104155553A CN 104155553 A CN104155553 A CN 104155553A CN 201410398420 A CN201410398420 A CN 201410398420A CN 104155553 A CN104155553 A CN 104155553A
- Authority
- CN
- China
- Prior art keywords
- electric energy
- voltage
- energy feedback
- setting value
- electric power
- 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.)
- Granted
Links
Abstract
The invention discloses a locomotive regenerative electric power feedback equipment test system. The test system is composed of two electric power feedback inverters and a three-winding feedback transformer. Direct-current buses of the two electric power feedback inverters are connected in parallel. The primary side of the three-winding feedback transformer is connected with a power grid, and the two secondary windings are respectively connected with alternating-current outputs of the two electric power feedback inverters. The invention further discloses a test method of the test system. The voltage of the direct-current bus of one electric power feedback inverter is increased under control to simulate the locomotive braking condition, and the other electric power feedback inverter feeds electric power back to the power grid when detecting direct-current voltage rise. The control logic and the power transmission capacity of the electric power feedback inverters can be tested. The method is low in cost, simple and practical, and high in test efficiency.
Description
Technical field
The present invention relates to a kind of locomotive electric energy feedback equipment test system and test method, belong to the testing of equipment field in high-power electric and electronic technology.
Background technology
Locomotive electric energy feedback equipment, for the absorption of regenerative electric energy and the occasion of feedback in track traffic, is pressed regenerative electric energy feedback to electrical network.
The principle of regenerative electric energy feedback equipment can be summarized as follows: when vehicle enters damped condition, the kinetic energy of locomotive is converted to electric energy, during to direct current network input electric energy, can cause that direct current network voltage raises.The control system of regenerative electric energy feedback equipment detects direct current network voltage in real time, in the time that the rising of direct current network voltage reaches a certain preset value, inverter starts to start, inverter is with the difference control output current of actual direct current network voltage and reference value, until reaching the maximum of inverter, output current allows output current, inverter is to AC network feedback electric energy, and direct current network voltage will have a declining tendency.Vehicle completes after braking, and direct current network voltage drop declines, and returns to normal value, and regenerative electric energy feedback equipment turns back to stand-by state.Therefore, regenerative electric energy feedback equipment not only can maintain direct current network voltage and keep stable, can also be by unnecessary electric energy feedback to AC network.Track traffic industry has strict requirement to hanging net operation equipment, need to comprehensively test going out plant, and detection locomotive electric energy feedback equipment need to be constructed the operating mode of a Reality simulation electric power supply system for subway, need an adjustable high power DC voltage source, raise with analog DC line voltage, also need structure electric energy feedback to be arrived to the loop of AC network.The test platform cost that meets above-mentioned requirements is higher.
Summary of the invention
The object of the invention is to: propose a kind of test platform of locomotive electric energy feedback equipment and use the method for this test platform, to meet the demand to locomotive electric energy feedback testing of equipment.
Concrete scheme is as follows:
A kind of locomotive electric energy feedback equipment test system, comprises two electric energy feedback inverters and three winding fly-back transformers.The DC bus of two electric energy feedback inverters is connected in parallel, and the former limit of three winding fly-back transformers is connected with electrical network, and two groups of secondary windings are connected with the interchange output of two electric energy feedback inverters respectively.
In such scheme, electric energy feedback inverter comprises DC bus capacitor, AC/DC convertor, alternating current filter and grid-connected switch.Wherein said AC/DC convertor can realize the conversion between alternating current and direct current.
The present invention also provides a kind of test method that uses described pilot system in addition, and described test method comprises the steps:
Step 1: start the first electric energy feedback inverter, and to control DC bus-bar voltage be the first setting value.
Step 2: the DC bus-bar voltage of controlling the first electric energy feedback inverter rises, and Control of Voltage target is the second setting value.
Step 3: the second electric energy feedback inverter detects that DC voltage exceedes after the 3rd setting value, starts to start, and Control of Voltage target is the first setting value.
Step 4: wait for DC voltage stability, and after lasting special time, the DC bus-bar voltage of controlling the first electric energy feedback inverter declines, Control of Voltage target is the first setting value, until DC voltage stability is in the first setting value.The scope of described special time is between 5 seconds and 30 seconds.
In such scheme, in described test method, the first setting value of DC voltage is less than the 3rd setting value, and the 3rd setting value is less than the second setting value.
Beneficial effect:
1, an electric energy feedback equipment, as testing apparatus, can regulate DC voltage continuously, sets the adjustment curve of DC voltage according to testing requirement, meets test operating mode arbitrarily, convenient flexible.
2, test platform is made up of two identical electric energy feedback equipment, wherein one can be used as testing apparatus, simulation subway DC bus-bar voltage raises, another is as equipment under test, also testing apparatus and equipment under test can be exchanged mutually, do not need to increase extra cost and just can realize the test of two electric energy feedback equipment, cost is low, and testing efficiency is high.
3, the active power flow direction of two electric energy feedback equipment is contrary, and two equipment have formed the inside circulation of active power.The overall loss of test platform is very little.
Brief description of the drawings
Fig. 1 is locomotive electric energy feedback equipment test platform topological diagram of the present invention
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1:, number in the figure title: 1, the first electric energy feedback equipment; 2, the second electric energy feedback equipment; 3, three winding fly-back transformers; 4, the first active power flow direction; 5, the second active power flow direction.
A set of locomotive electric energy feedback equipment test system, comprises two electric energy feedback inverters and three winding fly-back transformers (3).The DC bus of two electric energy feedback inverters is connected in parallel, and the former limit of three winding fly-back transformers is connected with electrical network, and two groups of secondary windings are connected with the interchange output of two electric energy feedback inverters respectively.
Electric energy feedback inverter comprises DC bus capacitor, AC/DC convertor, alternating current filter and grid-connected switch.Wherein said AC/DC convertor can realize the conversion between alternating current and direct current.AC/DC convertor is the inverter of three-phase half-bridge structure in this example.In this example, three-winding transformer original edge voltage is 35KV, the secondary voltage of double winding is 950V, and in this example, the first electric energy feedback equipment (1) is as testing apparatus, regulate DC capacitor voltage, the second electric energy feedback equipment (2) is as equipment under test.
The test method that uses above-mentioned pilot system, comprises the steps:
Step 1: start the first electric energy feedback inverter, and to control DC bus-bar voltage be 1500V.
Step 2: the DC bus-bar voltage of controlling the first electric energy feedback inverter rises, and Control of Voltage target is 1800V.The climbing speed that DC bus-bar voltage is set is 300V per second.This step analog DC electrical network DC voltage rising operating mode.
Step 3: DC voltage starts to rise gradually according to regulations speed, the startup threshold value of setting the second electric energy feedback inverter is 1600V, and when detecting that DC voltage exceedes after 1600V, the second electric energy feedback equipment starts to start, and Control of Voltage target is 1500V.
The dc-link capacitance parallel connection of two electric energy feedback inverters, two electric energy feedback inverter DC capacitor voltage control target differences, two inverters all cannot reach control target, two inverters will be exported maximum current, final DC capacitor voltage falls and is stabilized between 1500V-1800V, if two electric energy feedback inverters are identical, DC voltage will be stabilized in 1650V.
Now, the actual DC voltage 1650V of the first electric energy feedback inverter is lower than Control of Voltage target 1800V, and therefore, the first feedback inversion transformation device is in the duty to DC capacitor charging.Active power flow direction is (4).The actual DC voltage 1650V of the second electric energy feedback inverter is higher than Control of Voltage target 1500V, therefore, and the duty of the second feedback inversion transformation device in DC capacitor electric discharge.Active power flow direction is (5).Now, the active power flow direction of two inverters is contrary, cancels out each other, and the active power that the former limit of AC transformer consumes is very little.
Wait for DC voltage stability, and after lasting special time, the scope of described special time is between 5 seconds and 30 seconds, this time is the time in order to simulate locomotive skidding, and in the present embodiment, setting-up time is 10s.The DC bus-bar voltage of controlling the first electric energy feedback inverter after 10s declines, and Control of Voltage target is 1500V, now the DC voltage control congruence of two inverters, be 1500V, DC capacitor voltage falls and is stabilized in 1500V, does not have the transmission of active power, and test completes.Finally simulate locomotive brake braking, the whole process of electric energy feedback.Testing apparatus has realized the process that actual DC line voltage is risen and returned.Equipment under test has completed the detection to direct current network voltage, automatically starts and feed back to maximum output current the process of AC network.Two equipment can also be exchanged, mutually checking.
While test according to above-mentioned testing procedure, the first electric energy feedback inverter control DC bus-bar voltage rises, to charge to DC capacitor, active power flow direction is that secondary by AC transformer is to DC capacitor, the control target of the second electric energy feedback equipment is that DC bus-bar voltage is declined, be equivalent to DC capacitor electric discharge, active power flow direction is to AC transformer secondary by DC capacitor.Because the double winding active power of AC transformer secondary flows on the contrary, to cancel out each other, the active power that therefore the former limit of AC transformer consumes is very little.
Above embodiment is only for illustrating that technical scheme of the present invention is not intended to limit, and the modified in various forms of carrying out with reference to above-described embodiment or change are all within protection scope of the present invention.
Claims (4)
1. a locomotive electric energy feedback equipment test system, comprises two electric energy feedback inverters and three winding fly-back transformers; It is characterized in that: the DC bus of two electric energy feedback inverters is connected in parallel, the former limit of three winding fly-back transformers is connected with electrical network, and two groups of secondary windings are connected with the interchange output of two electric energy feedback inverters respectively.
2. pilot system as claimed in claim 1, is characterized in that: electric energy feedback inverter comprises DC bus capacitor, AC/DC convertor, alternating current filter and grid-connected switch; Wherein said AC/DC convertor can realize the conversion between alternating current and direct current.
3. use a test method for pilot system as claimed in claim 1, it is characterized in that: described test method comprises the steps:
Step 1: start the first electric energy feedback inverter, and to control DC bus-bar voltage be the first setting value;
Step 2: the DC bus-bar voltage of controlling the first electric energy feedback inverter rises, and Control of Voltage target is the second setting value;
Step 3: the second electric energy feedback inverter detects that DC voltage exceedes after the 3rd setting value, starts to start, and Control of Voltage target is the first setting value;
Step 4: wait for DC voltage stability, and after lasting special time, the DC bus-bar voltage of controlling the first electric energy feedback inverter declines, Control of Voltage target is the first setting value, until DC voltage stability is in the first setting value; The scope of described special time is between 5 seconds to 30 seconds.
4. test method as claimed in claim 3, is characterized in that: in described test method, the first setting value of DC voltage is less than the 3rd setting value, and the 3rd setting value is less than the second setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410398420.XA CN104155553B (en) | 2014-08-13 | 2014-08-13 | Locomotive electric power feedback equipment test system and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410398420.XA CN104155553B (en) | 2014-08-13 | 2014-08-13 | Locomotive electric power feedback equipment test system and test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104155553A true CN104155553A (en) | 2014-11-19 |
| CN104155553B CN104155553B (en) | 2017-01-11 |
Family
ID=51881105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410398420.XA Active CN104155553B (en) | 2014-08-13 | 2014-08-13 | Locomotive electric power feedback equipment test system and test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104155553B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093628A (en) * | 2016-06-01 | 2016-11-09 | 国电南京自动化股份有限公司 | A kind of regenerative braking energy feedback current transformer testing method |
| CN106771720A (en) * | 2016-11-30 | 2017-05-31 | 南京南瑞继保电气有限公司 | A kind of test method of locomotive regenerative electric energy feedback equipment simulating metro environment |
| CN109298255A (en) * | 2017-07-24 | 2019-02-01 | 株洲中车时代电气股份有限公司 | A kind of subway energy feedback current transformer power examination test system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0678408A (en) * | 1992-08-25 | 1994-03-18 | Nippondenso Co Ltd | Electric circuit equipment for electric vehicle |
| CN101071162A (en) * | 2007-06-29 | 2007-11-14 | 株洲南车时代电气股份有限公司 | Current converter test circuit |
| CN101249806A (en) * | 2008-04-14 | 2008-08-27 | 北京交通大学 | Modular energy feedback type traction power set and control method |
| CN201548626U (en) * | 2009-09-23 | 2010-08-11 | 中国北车股份有限公司大连电力牵引研发中心 | Electric transmission test device for AC-DC-AC traction converter |
| CN202633964U (en) * | 2012-04-06 | 2012-12-26 | 北京千驷驭电气有限公司 | Energy-fed type traction substation and power supply system |
| CN102983634A (en) * | 2012-12-27 | 2013-03-20 | 湖南恒信电气有限公司 | Capacitor-inverter absorption method for regenerative braking energy of vehicle |
-
2014
- 2014-08-13 CN CN201410398420.XA patent/CN104155553B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0678408A (en) * | 1992-08-25 | 1994-03-18 | Nippondenso Co Ltd | Electric circuit equipment for electric vehicle |
| CN101071162A (en) * | 2007-06-29 | 2007-11-14 | 株洲南车时代电气股份有限公司 | Current converter test circuit |
| CN101249806A (en) * | 2008-04-14 | 2008-08-27 | 北京交通大学 | Modular energy feedback type traction power set and control method |
| CN201548626U (en) * | 2009-09-23 | 2010-08-11 | 中国北车股份有限公司大连电力牵引研发中心 | Electric transmission test device for AC-DC-AC traction converter |
| CN202633964U (en) * | 2012-04-06 | 2012-12-26 | 北京千驷驭电气有限公司 | Energy-fed type traction substation and power supply system |
| CN102983634A (en) * | 2012-12-27 | 2013-03-20 | 湖南恒信电气有限公司 | Capacitor-inverter absorption method for regenerative braking energy of vehicle |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093628A (en) * | 2016-06-01 | 2016-11-09 | 国电南京自动化股份有限公司 | A kind of regenerative braking energy feedback current transformer testing method |
| CN106093628B (en) * | 2016-06-01 | 2019-03-08 | 国电南京自动化股份有限公司 | A kind of regenerative braking energy feedback current transformer testing method |
| CN106771720A (en) * | 2016-11-30 | 2017-05-31 | 南京南瑞继保电气有限公司 | A kind of test method of locomotive regenerative electric energy feedback equipment simulating metro environment |
| CN106771720B (en) * | 2016-11-30 | 2019-12-06 | 南京南瑞继保电气有限公司 | test method for simulating subway environment by locomotive regenerative electric energy feedback equipment |
| CN109298255A (en) * | 2017-07-24 | 2019-02-01 | 株洲中车时代电气股份有限公司 | A kind of subway energy feedback current transformer power examination test system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104155553B (en) | 2017-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104505867B (en) | Alternating current and direct current hybrid micro-grid system and control strategy thereof | |
| Zeng et al. | DC/DC converters based on hybrid MMC for HVDC grid interconnection | |
| CN103972900B (en) | Utilize the method that voltage control sensitive factor determination Multi-infeed HVDC transmission system reactive power compensator is layouted | |
| CN106950512B (en) | Energy storage converter grid-connected and grid-disconnected characteristic integrated detection system and method | |
| CN103532194A (en) | Self-balance control strategy for battery SOC (State-of-Charge) in chain type energy storage system powered by independent batteries | |
| Varghese et al. | An efficient voltage control strategy for fast charging of plug-in electric vehicle | |
| CN104155553B (en) | Locomotive electric power feedback equipment test system and test method | |
| CN104201719B (en) | A kind of locomotive regenerative electric energy feedback equipment and control method | |
| CN105610190A (en) | Comprehensive utilization device and system for renewable energy feedback of rail transit vehicle | |
| CN106771720B (en) | test method for simulating subway environment by locomotive regenerative electric energy feedback equipment | |
| CN105425071A (en) | Testing platform of super-capacitance energy storage apparatus and testing method thereof | |
| Lu et al. | Distributed secondary control for dc microgrid applications with enhanced current sharing accuracy | |
| CN107769247A (en) | A kind of RLC load simulation systems and its control method for the detection of anti-isolated island | |
| CN109270312B (en) | Load simulation device for auto-transformer rectifier of multi-electric aircraft | |
| Li et al. | DC/DC converter development for battery energy storage supporting railway DC feeder system | |
| Chatterjee et al. | HVDC collection system for offshore wind farm | |
| KR20190030893A (en) | Motor Load Simulator and Control Method with Power Regeneration Function | |
| de Almeida et al. | A bidirectional single-stage three-phase rectifier with high-frequency isolation and power factor correction | |
| CN107979167A (en) | A kind of substation's emergency power supply system | |
| CN109298255A (en) | A kind of subway energy feedback current transformer power examination test system and method | |
| CN111355240B (en) | Rail transit power distribution network system, power supply system and regenerated energy inverter circuit | |
| CN203839974U (en) | High-voltage tripolar direct-current power transmission system | |
| CN106374495A (en) | Modular multilevel electrical railway power grid side electric energy quality optimization current transformer | |
| JP6504789B2 (en) | Power converter | |
| Di Napoli et al. | Ultracapacitor storage for a 50t capacity gantry crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |