CN106199093A - A kind of Large Copacity tunable load device - Google Patents
A kind of Large Copacity tunable load device Download PDFInfo
- Publication number
- CN106199093A CN106199093A CN201610850087.0A CN201610850087A CN106199093A CN 106199093 A CN106199093 A CN 106199093A CN 201610850087 A CN201610850087 A CN 201610850087A CN 106199093 A CN106199093 A CN 106199093A
- Authority
- CN
- China
- Prior art keywords
- load
- series
- throw switch
- spdt
- segment
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
- G01R1/203—Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Adjustable Resistors (AREA)
- Power Conversion In General (AREA)
Abstract
The invention discloses a kind of Large Copacity tunable load device, be mainly used in electrical equipment and electrical engineering technical field, including some segment load, some single-pole double-throw switch (SPDT)s and two power source bus；Some segment load are sequentially connected in series composition series load；Series load two ends and intermediate node are connected to the moved end of single-pole double-throw switch (SPDT)；Two quiet ends of single-pole double-throw switch (SPDT) are connected respectively on two power source bus；The moved end switching of single-pole double-throw switch (SPDT) produces different connection in series-parallel combinations to some segment load during different quiet end, forms many grades of load gears.Apparatus of the present invention are when heavy duty regulates based on configuration in parallel, the load regulation range that main acquisition is wider, and when heavy duty, load increases, and resistance value reduces, and the segment impedance put in parallel is the most, and current capacity and temperature rise heat-sinking capability are the strongest；Apparatus of the present invention based on series configuration, mainly obtain wider resistance range of accommodation when underloading regulates.
Description
Technical field
The present invention relates to electrical equipment and electrical engineering technical field, especially Large Copacity tunable load device.
Background technology
Use Large Copacity tunable load (more than 10kVA) device in the electrical apparatus, compared to reduced-capacity load device
Speech, during the design of Large Copacity tunable load device, in addition to resistance value to be considered, in addition it is also necessary to selective analysis heat radiation and temperature rise situation；
Also need to when voltage is higher consider insulation ability to bear；Also need to when electric current is bigger consider switching contact or the current-carrying of switch
Ability；Even huge due to big capacity load component size, how to optimize structure and all seem extremely important.Reduced-capacity load device
Can to be designed to the form of continuously adjustabe or multi-gear adjustable very easily, but for Large Copacity tunable load device, due to
Voltage is higher and electric current is relatively big, is difficult to be designed to the continuously adjustabe load device of traditional mechanical adjustable type, in order to improve reliability
With cost-effective, typically all it is designed to the tunable load device of multi-gear adjustable form.
During tradition multistage tunable load device design, it is generally configured to pure in parallel or pure cascade.Pure cascade
Tunable load device can be readily available wider impedance range of accommodation, but there is also serious deficiency, impedance more hour, institute
The impedance material used is the fewest, and load more strengthens, this from current-carrying, heat radiation and temperature rise for be extremely disadvantageous, therefore
The heavily loaded regulating power of pure series system tunable load device is poor, is not suitable for Large Copacity especially vast capacity (1MVA)
Tunable load device；The tunable load device of pure parallel form, load is the biggest, and impedance is the least, and input resistance material is the most,
Beneficially temperature rise and heat radiation, but impedance range of accommodation relative narrower, underloading regulating power is more weak.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, propose a kind of Large Copacity tunable load device.The present invention
Device occupies little space, and stock utilization is high, temperature rise good heat dissipation effect, i.e. available bigger impedance range of accommodation, the most permissible
Obtain bigger load regulation range, moreover it is possible to take into account and obtain thinner regulation granularity.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of Large Copacity tunable load device, including some segment load, some single-pole double-throw switch (SPDT)s and two power supply mothers
Line；Described some segment load are sequentially connected in series composition series load；The head end of described series load and tail end and series connection are born
In load, node between two segment load is connected to the moved end of single-pole double-throw switch (SPDT), and two quiet ends of single-pole double-throw switch (SPDT) connect respectively
Receive different power source bus；The moved end switching of single-pole double-throw switch (SPDT) produces not to described some segment load during different quiet end
Same connection in series-parallel combination, forms many grades of load gears.
Preferably, tunable load device also includes one or two single-pole single-throw switch (SPST)；The head end of described series load and/
Or tail end is connected to one end of single-pole single-throw switch (SPST), the other end of single-pole single-throw switch (SPST) is connected to any one power source bus.
Preferably, head end and/or the tail end of described series load is directly connected to any one power source bus.
The technical scheme that the present invention provides has the benefit that
(1) the tunable load device of the present invention, uses less impedance material and switch, it is achieved more impedance combination shape
State, both can be combined into pure series connection to obtain wider impedance range of accommodation；Pure parallel connection can also be combined into
State is to obtain wider load regulation range；Even can be combined into connection in series-parallel admixture, to obtain thinner tune
Joint granularity.
(2) the tunable load device of the present invention, occupies little space, and stock utilization is high, temperature rise good heat dissipation effect,
To bigger impedance range of accommodation, bigger load regulation range can be obtained again, moreover it is possible to take into account and obtain thinner regulation granularity.
Below in conjunction with drawings and Examples, the present invention is described in further detail, but a kind of Large Copacity of the present invention is adjustable
Load device is not limited to embodiment.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the embodiment of the present invention 1；
Fig. 2 is the circuit diagram of the embodiment of the present invention 2；
Fig. 3 is the circuit diagram of the embodiment of the present invention 3.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Embodiment 1
As it is shown in figure 1, a kind of Large Copacity tunable load device, including some segment load Z1～ZN, some single-pole double throws open
Close K0～KNAnd two power source bus A and B；Described some segment load are sequentially connected in series composition series load；Described series connection is born
Node D between the head end C, tail end E and two segment load that carry1～DN-1It is connected respectively to the moved end of single-pole double-throw switch (SPDT), hilted broadsword
Two quiet ends of commutator are connected respectively to different power source bus；The moved end switching of single-pole double-throw switch (SPDT) is to different quiet ends
The some segment load of Shi Suoshu produce different connection in series-parallel combinations, form many grades of load gears.
In the present embodiment, described load includes resistance, electric capacity, inductance or the impedance of a combination thereof mode；Described power source bus
It can be AC or DC bus.
In the present embodiment, based on series configuration during underloading regulation, the impedance range of accommodation that main acquisition is wider；Heavy duty is adjusted
Based on configuration in parallel during joint, the load regulation range that main acquisition is wider；Additionally can with connection in series-parallel mixing configuration mode,
Obtain some intervening gears, to obtain thinner regulation granularity；When heavy duty, load increases, and resistance value reduces, input in parallel
Segment impedance is the most, and current capacity and temperature rise heat-sinking capability strengthen.
Embodiment 2
As in figure 2 it is shown, a kind of Large Copacity tunable load device, including some segment load Z1～ZN, some single-pole double throws open
Close K1～KN-1, two single-pole single-throw switch (SPST) K0And KN, and two power source bus A and B；Described some segment load are sequentially connected in series even
Connect composition series load；The head end C and tail end E of described series load are connected respectively to one end of single-pole single-throw switch (SPST), hilted broadsword list
The other end of throw switch is connected to any one power source bus；Node D between two segment load in series load1～DN-1Even
Receiving the moved end of single-pole double-throw switch (SPDT), two quiet ends of single-pole double-throw switch (SPDT) are connected respectively to different power source bus；Hilted broadsword is double
The moved end switching of throw switch produces different connection in series-parallel combinations to described some segment load during different quiet end, forms many grades and bears
Carry gear.
In the present embodiment, described load includes resistance, electric capacity, inductance or the impedance of a combination thereof mode；Described power source bus
Including AC or DC bus.
The beneficial effect of the present embodiment is with embodiment 1.
Embodiment 3
As it is shown on figure 3, a kind of Large Copacity tunable load device, including some segment load Z1～ZN, some single-pole double throws open
Close K1～KN-1And two power source bus A and B；Described some segment load are sequentially connected in series composition series load；Described series connection
The head end C and tail end E of load are directly connected to any one power source bus, joint between two segment load in series load
Point D1～DN-1Being connected to the moved end of single-pole double-throw switch (SPDT), two quiet ends of single-pole double-throw switch (SPDT) are connected respectively to different power supplys
Bus；The moved end switching of single-pole double-throw switch (SPDT) produces different connection in series-parallel groups to described some segment load during different quiet end
Close, form many grades of load gears.
In the present embodiment, described load includes resistance, electric capacity, inductance or the impedance of a combination thereof mode；Described power source bus
Including AC or DC bus.
The beneficial effect of the present embodiment is with embodiment 1.
The head end and the tail end that only list series load in above-described embodiment are adopted and are linked into power source bus in a like fashion,
Obviously, head end and the tail end of series load of the present invention may also take on different modes and be linked into power source bus.
Based on the networking of scheme employing embodiment 1, the present invention is further elaborated in detail below.In order to more
Add directly perceived and succinct explanation device characteristic, it is assumed that Z1～ZNFor purely resistive load element, and suppose three kinds of states of switch on-off
For: A-switch is switched to connect the quiet end of bus A, B-switch is switched to connect the quiet end of bus B, NA-switches off and do not closes
To quiet end.
Embodiment one:
N=5 is made to be analyzed.Assuming that Z1～Z5It is the overall double wrap continuously of a single resistance material of use or reciprocal coiling
Noninductive resistance, middle uniform tap, i.e. resistance value is respectively Z1=Z2=Z3=Z4=Z5=R, the permission power of 5 sections of resistance is all
U2/ R, switchs K0Saving, head end directly connects A-bus.
Tunable load device effective resistance gear and corresponding on off state such as table 1.
Table 1
Having the beneficial effect that of this programme
(1) with 5 sections of resistance and 5 switches, it is possible to being combined into 15 resistance gears, scope is 0.2R～5R, maximum times
Difference: 5R/0.2R=25.
(2) resistance uses homogenous material continuous coiling, middle uniform tap, simple in construction, low cost, safeguards simple.
(3) all contact capacity is consistent, as long as the 2/5 of rated capacity, cost-effective, reduce space hold.
(4) when heavy duty, resistance is the least, and load is the biggest, and the resistance material come into operation is the most, and stock utilization is high, temperature
Rise radiating condition superior, be suitable for being designed to super large power load.
(5) as long as applied voltage is less than rated voltage, any switching of switch will not result on any one section of resistance
Electric current exceed rated current, safe and reliable.
Concrete case: certain chopper overload test system, bus rated voltage 1000VDC, tests conduction time
200ms, R=0.5 Ω, the effective resistance used/load gear such as table 2.
Table 2
Embodiment two:
N=6 is made to analyze.Assuming that ZXFor double wrap or the noninductive resistance of reciprocal coiling, resistance value R, it is allowed to power is U2/R；
Z1、Z2、Z3Respectively with four ZXResistor coupled in parallel (can also be conductor material, length and ZXIdentical, but cross-sectional area of conductor long-pending be ZX4
Resistance again), resistance value is Z1=Z2=Z3=R/4；Z4、Z5、Z6Use single ZXResistance, resistance value is Z4=Z4=Z5=R；Open
Close K0Saving, head end directly connects A-bus.
Tunable load device effective resistance gear and corresponding on off state such as table 3.
Table 3
Having the beneficial effect that of this programme:
(1) as long as by a kind of resistance material, low cost, safeguarding simple.
(2) when heavy duty, load is the biggest, and resistance is the least, and the resistance material come into operation is the most, and stock utilization is high, temperature
Rise radiating condition superior, be suitable for being designed to super large power load.
(3) as long as applied voltage is less than rated voltage, any switching of switch will not result on any one section of resistance
Electric current exceed rated current, safe and reliable.
(4) only can i.e. can get 15 grades of resistance (underloading regulation) of equalization with pure series connection method, can only use simultaneously
The i.e. available impartial 15 grades of loads (heavy duty regulation) of pure parallel method；Resistance adjustable extent is 1/15R～15/4R, maximum times
Difference: (15/4R)/(1/15R)=56.25.
Concrete case: certain chopper overload test system, bus rated voltage 1000VDC, tests conduction time
100ms, R=1 Ω, the effective resistance gear used such as table 4.
Table 4
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (3)
1. a Large Copacity tunable load device, including some segment load, some single-pole double-throw switch (SPDT)s and two power source bus；
It is characterized in that: described some segment load are sequentially connected in series composition series load；Series load two ends and two segment load
Between node be connected to the moved end of single-pole double-throw switch (SPDT), two quiet ends of single-pole double-throw switch (SPDT) are connected respectively to different power supplys
Bus；The moved end switching of single-pole double-throw switch (SPDT) produces different connection in series-parallel groups to described some segment load during different quiet end
Close, form many grades of load gears.
Large Copacity tunable load device the most according to claim 1, it is characterised in that:
Also include one or two single-pole single-throw switch (SPST)；The head end of described series load and/or tail end are connected to single-pole single-throw(SPST and open
The one end closed, the other end of single-pole single-throw switch (SPST) is connected to any one power source bus.
Large Copacity tunable load device the most according to claim 1, it is characterised in that:
The head end of described series load and/or tail end are directly connected to any one power source bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850087.0A CN106199093B (en) | 2016-09-26 | 2016-09-26 | Large-capacity adjustable load device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850087.0A CN106199093B (en) | 2016-09-26 | 2016-09-26 | Large-capacity adjustable load device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106199093A true CN106199093A (en) | 2016-12-07 |
| CN106199093B CN106199093B (en) | 2022-12-06 |
Family
ID=57520700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610850087.0A Active CN106199093B (en) | 2016-09-26 | 2016-09-26 | Large-capacity adjustable load device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106199093B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116500322A (en) * | 2023-06-27 | 2023-07-28 | 艾德克斯电子（南京）有限公司 | Programmable high-power resistive load device and test cabinet thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001169539A (en) * | 1999-12-06 | 2001-06-22 | Oem Kk | Active feedback chopper circuit and voltage adjusting using the same |
| CN101630869A (en) * | 2009-08-18 | 2010-01-20 | 天津大学 | Super capacitor control circuit as power supply |
| CN102680796A (en) * | 2012-06-01 | 2012-09-19 | 江南大学 | Resistor measuring device by using method of equal effects |
| CN103472272A (en) * | 2013-07-25 | 2013-12-25 | 浙江方圆电气设备检测有限公司 | Photovoltaic combiner-box DC current adjusting and testing device |
| CN203385769U (en) * | 2013-07-25 | 2014-01-08 | 浙江方圆电气设备检测有限公司 | Photovoltaic conflux case direct current adjusting test device |
| CN203385754U (en) * | 2013-08-23 | 2014-01-08 | 中国船舶重工集团公司第七〇三研究所无锡分部 | Large-power medium-voltage direct-current load |
| CN203396800U (en) * | 2013-06-05 | 2014-01-15 | 贵州凯阳航空发动机有限公司 | 8421 code load circuit loaded with load case |
| CN103645358A (en) * | 2013-12-16 | 2014-03-19 | 天津市鑫鼎源科技发展有限公司 | Matrix load device |
| CN204405815U (en) * | 2015-02-10 | 2015-06-17 | 中国人民解放军海军航空工程学院青岛校区 | The parallel adjustable DC load of a kind of aviation highly reliable large power |
| CN206074654U (en) * | 2016-09-26 | 2017-04-05 | 华侨大学 | A kind of Large Copacity tunable load device |
-
2016
- 2016-09-26 CN CN201610850087.0A patent/CN106199093B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001169539A (en) * | 1999-12-06 | 2001-06-22 | Oem Kk | Active feedback chopper circuit and voltage adjusting using the same |
| CN101630869A (en) * | 2009-08-18 | 2010-01-20 | 天津大学 | Super capacitor control circuit as power supply |
| CN102680796A (en) * | 2012-06-01 | 2012-09-19 | 江南大学 | Resistor measuring device by using method of equal effects |
| CN203396800U (en) * | 2013-06-05 | 2014-01-15 | 贵州凯阳航空发动机有限公司 | 8421 code load circuit loaded with load case |
| CN103472272A (en) * | 2013-07-25 | 2013-12-25 | 浙江方圆电气设备检测有限公司 | Photovoltaic combiner-box DC current adjusting and testing device |
| CN203385769U (en) * | 2013-07-25 | 2014-01-08 | 浙江方圆电气设备检测有限公司 | Photovoltaic conflux case direct current adjusting test device |
| CN203385754U (en) * | 2013-08-23 | 2014-01-08 | 中国船舶重工集团公司第七〇三研究所无锡分部 | Large-power medium-voltage direct-current load |
| CN103645358A (en) * | 2013-12-16 | 2014-03-19 | 天津市鑫鼎源科技发展有限公司 | Matrix load device |
| CN204405815U (en) * | 2015-02-10 | 2015-06-17 | 中国人民解放军海军航空工程学院青岛校区 | The parallel adjustable DC load of a kind of aviation highly reliable large power |
| CN206074654U (en) * | 2016-09-26 | 2017-04-05 | 华侨大学 | A kind of Large Copacity tunable load device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116500322A (en) * | 2023-06-27 | 2023-07-28 | 艾德克斯电子（南京）有限公司 | Programmable high-power resistive load device and test cabinet thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106199093B (en) | 2022-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101763957B (en) | Spring contact for electric conduction | |
| RU2664558C2 (en) | Unified power flow controller for double-circuit line | |
| ATE515046T1 (en) | UNDER LOAD TAP SWITCH | |
| CN202178175U (en) | Vacuum on-load tap-changer double-vacuum-tube transition circuit | |
| CN104362751A (en) | Intelligent switching switch | |
| WO2014124771A1 (en) | Switching device for an on-load tap changer | |
| CN206074654U (en) | A kind of Large Copacity tunable load device | |
| CN106199093A (en) | A kind of Large Copacity tunable load device | |
| CN104752043A (en) | Voltage regulating method for three-phase loaded voltage-regulating self-coupling transformer | |
| JP2005260922A5 (en) | ||
| CN107424806B (en) | It can be realized the device and method of high-current low-voltage side twin voltage switching | |
| Gao et al. | A new scheme for on-load tap-changer of transformers | |
| CN112216494A (en) | On-load tap-changer and operation control method thereof | |
| WO2015188645A1 (en) | Bypass auxiliary on-load tap-changer and method thereof | |
| CN102832075A (en) | Double vacuum tube transition circuit of vacuum on-load tap-changer | |
| KR20170012101A (en) | Arrangement for current limitation which is suitable for integration into a power supply serving network | |
| CN105449839A (en) | Isolated type high-speed double-power-supply switching device | |
| CN201681729U (en) | Conducting spring contact finger | |
| CN203733648U (en) | High-voltage contact device for on-load capacity-regulating switch | |
| CN111521935A (en) | Load connecting circuit for relay electric service life and bearing capacity test | |
| CN206849719U (en) | Multistage more power transfer devices | |
| CN220774221U (en) | Novel change-over switch core of heavy-current vacuum on-load tap-changer | |
| CN204271908U (en) | A kind of by-pass switch unit, inversion output switching element and uninterrupted power supply | |
| CN202816698U (en) | Series-parallel connection method on-load capacity-regulating series multi-break switch | |
| Shu et al. | Power Electronic Transformer Based on Mixed-Frequency Modulation Strategy |
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 |