CN101710706A - High-voltage alternating current (network) control device consisting of switch transformer module - Google Patents
High-voltage alternating current (network) control device consisting of switch transformer module Download PDFInfo
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- CN101710706A CN101710706A CN200910073065A CN200910073065A CN101710706A CN 101710706 A CN101710706 A CN 101710706A CN 200910073065 A CN200910073065 A CN 200910073065A CN 200910073065 A CN200910073065 A CN 200910073065A CN 101710706 A CN101710706 A CN 101710706A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The invention discloses a high-voltage alternating current (network) control device consisting of a high-voltage high-power switch transformer type power electronic module (switch transformer module for short), and belongs to the technical field of power electronics, and can radically change the uncontrollable condition of the current alternating current network so as to conveniently implement voltage adjustment, current adjustment and power adjustment of the high-voltage alternating current network and become a controllable alternating current network. The switch transformer module is characterized by comprising a switch transformer module consisting of a three-phase transformer and six power electronic devices; one end of a primary winding of the transformer is connected with an alternating current power supply, the other end of the primary winding is connected with an output, and two ends of a secondary winding of the transformer are connected with the power electronic devices; and when the switch transformer module forms the high-voltage alternating current (network) control device, a main control unit, a trigger unit and corresponding voltage and current sensors are matched. The high-voltage alternating current (network) control device consisting of the switch transformer module can also be used for other high-voltage alternating current high-power control.
Description
Technical field
The present invention relates to a kind of any high voltage, any High Level AC Voltage (net) control device that constitutes by switch transformer module of big Current Regulation of can be used for, it belongs to electric and electronic technical field, the occasion that can be used for the high-power adjusting of many needs, particularly be suitable for the adjusting of high-voltage alternating electric power net, make it to become the controlled electrical network of interchange by exchanging uncontrollable electrical network.
Background technology
We know that the reliability of thyristor connection in series-parallel technology is the key issue of its power upgrading of restriction and extensive use.If this obstacle does not exist, the capacity of power electronic equipment can be accomplished big arbitrarily, then the uncontrollable problem of AC network can solve and becomes and exchange controlled electrical network, almost be independent of each other between each bar circuit, article one, the short trouble of circuit just can not involve whole electrical network, the major break down of similar north American power grid just can not take place, the sudden change of a matter will take place in the control of electrical network and management, and the circuit conveying capacity can increase substantially.Therefore developing novel high-power electric electrical device is vital to the control and the management of electrical network.
But development novel high-power power electronic device is closed multi-disciplinary technical developments such as based material, electronics, and its road is very difficult.The voltage that requires is high more, big more its development of electric current is just difficult more.Though novel electric power electric devices such as the insulated gate transistor IGBT of Chu Xianing, integrated gate commutated thyristor IGCT had solved some technical problem in recent years, but aspect withstand voltage and capacity, compare, also can't satisfy the demand far away with the regulation and control demand of the large-scale power facility of high speed development.We ward off new road in addition thus, have invented switch transformer module and have solved this difficult problem.
Summary of the invention and beneficial effect
The technical problem to be solved in the present invention provides a kind of High Level AC Voltage (net) control device of high-voltage large current switch transformer module formation of high reliability.
Switch transformer module is solely warded off the small stream footpath, and it combines transformer technology and thyristor technology, has constituted a power electronic switch assembly that can bear any high voltage, arbitrarily big electric current.Switch transformer module is that the improvement of thyristor serial connection technology (abandoning) is had again simultaneously can be directly and the advantage of usefulness, thereby it has greatly improved the capacity and the reliability of the power electronic equipment that is made of switch transformer module, and such power electronic equipment can be applied even more extensively at various industrial circles.
The invention provides a kind of High Level AC Voltage that is made of switch transformer module (net) control device, its switch transformer module is characterised in that and comprises: a three-phase transformer (TK) and several power electronic device (for example SCR); One termination AC power (Ui) of the former limit of transformer (elementary) winding, another termination output (Uo), transformer is paid the power electronic device (for example SCR) of the positive and negative parallel connection of two terminations of limit (secondary) winding, and this is the basic comprising (clear for drawing, as to draw with line chart among the figure) of this module.Protective circuit RC and piezo-resistance YM are used for providing protection (clear for drawing, as in some accompanying drawing of this patent file this protective circuit to be omitted) to power electronic device (for example SCR).The former limit winding of transformer is by controlled alternating voltage requirement coiling, and transformer is paid the requirement of withstand voltage coiling of limit winding by single power electronic device, because the voltage of the former limit of transformer winding can be high arbitrarily, therefore controlled voltage can be accomplished any height; Such device just can substitute the series connection of many devices, has solved the low integrity problem of components and parts series connection.When required adjusting electric current is big, can takes to increase the method for paying limit winding (many auxiliary winding) and power electronic device quantity (and using) and solve; Also can take the method for module and usefulness to solve.Because the current-sharing effect of transformer self leakage reactance makes the current-sharing effect of this module and usefulness technology very good, has solved the integrity problem of alternate manner parallel current-sharing, therefore regulate electric current and can accomplish arbitrarily that greatly the adjusting power of module just can be big arbitrarily like this.When power electronic device adopts half control device (for example SCR), can obtain high-voltage large current half control module, its control method can be a phase control.When power electronic device adopts full control device (for example VMOS, IGBT etc.), can obtain high-voltage large current and control module entirely, its control method can be pulse width modulation controlled (PWM).Because the connection in series-parallel problem has all obtained solution, we can say the high-power electric and electronic " device " that has found a kind of " perfection ".
When constituting alternating current (net) control device by switch transformer module, as long as can constitute alternating current (net) control device of open loop or closed loop for its increase main control unit, trigger element, sensor unit.
Main control unit can be made of computer system, for example programmable controller (PLC), industrial computer, single-chip microcomputer etc.; Trigger element is then selected according to the station service power electronic device; Sensor unit is generally the voltage transformer summation current transformer, and it provides voltage signal and current signal for computer system, is the closed-loop control system of controlled quentity controlled variable thereby constitute with voltage or electric current.
Alternating current (net) control device that installing is made of switch transformer module on each bar circuit, then each bar circuit is controlled and then whole electrical network is controlled, and the stable control and the automation of whole electrical network are very easily.Life-span improves greatly so large-area power-cuts can not take place, subsynchronous resonance can not take place, the circuit transmission capacity can increase substantially, transmission facility can be avoided the superpotential injury of switch, 1000KV ac transmission with large-area applications ...
Description of drawings
Can be well understood to characteristics of the present invention in conjunction with the accompanying drawings and to the meaning of current power system.
Fig. 1 is the basic circuit of being used by alternating current (net) control device that switch transformer module constitutes;
Fig. 2 is the basic circuit of alternating current (net) control device of many auxiliary winding switch transformer module of being applicable to high-power control (power electronic device and with);
Fig. 3 is the basic circuit that is applicable to alternating current (net) control device of many auxiliary winding switch transformer module of super high power control and usefulness.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
Fig. 1 is the basic circuit of alternating current (net) control device that is made of switch transformer module; Wherein TK is a transformer, and it has an elementary winding and a secondary winding.Elementary winding is by the requirement coiling of the alternating voltage Ui that is conditioned, the AC power (Ui) that the one termination is to be regulated, another termination output (Uo); Secondary winding is by the requirement of withstand voltage coiling of single power electronic device, two termination power electronic device thyristor SCR of secondary winding; Because the withstand voltage of the former limit of transformer winding can be designed into any height, therefore being conditioned voltage can reach any height; Such device just can substitute the series connection of many devices, has solved the low integrity problem of components and parts series connection.
We know, the function that transformer has a transformation has its open circuit characteristic (when paying the limit open circuit former limit bear full voltage and electric current is very little) and short circuit characteristic (the very little and size of current of original edge voltage depends on series load during the short circuit of pair limit) again; Thyristor also has open circuit characteristic and short circuit characteristic, if transformer and thyristor are combined, utilize combination on the two performance (making transformer only be operated in open circuit and short-circuit condition) just can reach the effect of a high voltage bearing electronic power switch device, the physical circuit principle is as follows:
The former limit of transformer and load series connection power supply, the limit low pressure winding of paying of just antiparallel unidirectional thyristor and transformer is connected into closed circuit, and thyristor is isolated in low-pressure side like this, thereby need not connect, and reliability improves greatly.
When not conducting of thyristor, transformer secondary output is open-circuit condition, and primary current very little (less than no-load current), the major part of supply voltage are added in (U1 ≈ Ui) on the primary winding, and load voltage is very little; When the thyristor conducting, transformer secondary output is short-circuit condition (U2=0), primary voltage (U1 ≈ 0) very little (short-circuit voltage), and the major part of supply voltage is added in the load.Here owing to the control of thyristor, transformer is realized the on-off action to load terminal voltage, so we are referred to as switch transformer.
When the ascending continuous variation of the angle of flow of thyristor, the also ascending continuous variation of load terminal voltage has promptly realized power grid voltage regulating.K1 is a by-pass switch among the figure, and TK is a switch transformer, PT1 and PT2 be into the end and go out the terminal voltage instrument transformer, CT is a current transformer, SCR is a thyristor, CON is the control device that comprises main control unit and trigger element.Control device is gathered voltage signal and current signal and is compared with set point, requires to send triggering signal to thyristor according to the intelligence system in the main control unit, to realize functions such as three-phase power balance, electric current and voltage adjusting.
As controlled device power big (more than 6000KW), during the permission current limited of existing thyristor, can adopt many auxiliary winding switch transformer module mode shown in Figure 2, realize thyristor and in order to solve the current limited problem.
As controlled device more powerful (more than 12000KW),, can adopt many auxiliary winding switch transformer module shown in Figure 3 and in order to solve the limited problem of switch transformer structure because of switch transformer structure problem can not be infinitely great the time.
The high-power control device of alternating current (net) that switch transformer module constitutes has following characteristics:
1, the low reliability of having got rid of the thyristor serial connection technology makes selection of components very convenient and for ease of maintenaince.
2, solved thyristor parallel current-sharing problem, when bearing power during greater than 6000KW, can adopt many auxiliary winding switch transformer module mode (as shown in Figure 2), promptly realize also using of thyristor by many auxiliary winding of switch transformer, because the current-sharing effect of switch transformer leakage reactance is better than the thyristor current-sharing effect by parameter consistency directly in parallel greatly, so the current-sharing effect is very good.
3, solved the problem of controlled power expansion, when bearing power greater than 12000KW even when higher, can adopt switch transformer module and usefulness technology (as shown in Figure 3), promptly by switch transformer module and with realizing that super high power controls.And with the quantity of module without limits, therefore can realize any powerful control.
4, owing to the filter action of switch transformer leakage reactance, high order harmonic component significantly reduces the influence of electrical network, and high order harmonic component resultant distortion rate is in GB.
Have only copper loss when 5, switch transformer is opened, have only iron loss during shutoff, therefore when working loss less, guaranteed the characteristic that loss is little from principle.
Current, switch transformer module is applied to more than 200 of the existing example of flexibly starting high voltage motor, and maximum power controlling has reached 20000KW, has all obtained good effect.
That the main control unit here adopts is programmable controller PLC, and it detects the line voltage distribution electric current and pulls CFB, amplifies plate FDB and trigger thyristor SCR by triggering, to realize trend controlled function such as voltage stabilizing, current stabilization.
Just several embodiments of this invention of foregoing description, various not illustrating is construed as limiting the essence of an invention content, the person of an ordinary skill in the technical field does not deviate from essence of an invention and scope having read modification or the distortion of behind the specification aforesaid embodiment being made.
Claims (6)
1. High Level AC Voltage (net) control device that constitutes of the switching transformer type power electronic module of a high-tension high-power (abbreviation switch transformer module), the voltage-regulation, Current Regulation and the power adjustments that can be used for any High Level AC Voltage (net), it is characterized in that comprising: by a three-phase transformer and several the switch transformer modules that unidirectional power electronic device constitutes: a termination AC power of the former limit of transformer winding, another termination output; Transformer is paid the power electronic device of the positive and negative parallel connection of two terminations of limit winding; Main control unit, trigger element and the correspondent voltage, the current sensor that constitute by computer system.
2. according to High Level AC Voltage (net) control device that constitutes by switch transformer module of claim 1, its feature also comprises: the former limit winding of switch transformer is by alternating voltage requirement coiling to be regulated, transformer is paid the requirement of withstand voltage coiling of limit winding by power electronic device, because the voltage of the former limit of transformer winding can be high arbitrarily, so regulation voltage can be accomplished any height.
3. according to High Level AC Voltage (net) control device that constitutes by switch transformer module of claim 1, its feature also comprises: when the electric current of required adjusting is big, can take the method for many auxiliary winding switch transformer module (power electronic device is also used) to solve, can also take the method for switch transformer module and usefulness to solve.Because module is also very good with the current-sharing effect of technology, therefore regulates electric current and can accomplish big arbitrarily.
4. according to High Level AC Voltage (net) control device that constitutes by switch transformer module of claim 1, its feature also comprises: when the full control of power electronic device employing device, can obtain high-voltage large current and control adjusting entirely, its control method can be a pulse width modulation controlled; When power electronic device adopts half control device (thyristor), can obtain the high-voltage large current half control and regulate, its control method can be a phase control.
5. according to High Level AC Voltage (net) control device that constitutes by switch transformer module of claim 1, its feature also comprises: can constitute closed-loop control system by main control unit, trigger element and correspondent voltage, current sensor, Control Software requires to select according to control.
6. according to High Level AC Voltage (net) control device that constitutes by switch transformer module of claim 1, its feature also comprises: when power grid quality is had relatively high expectations, can install dynamic reactive compensation device (SVC) additional, to reduce influence of harmonic and to improve power factor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910073065A CN101710706A (en) | 2009-10-19 | 2009-10-19 | High-voltage alternating current (network) control device consisting of switch transformer module |
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| CN200910073065A CN101710706A (en) | 2009-10-19 | 2009-10-19 | High-voltage alternating current (network) control device consisting of switch transformer module |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931236A (en) * | 2010-08-20 | 2010-12-29 | 电子科技大学 | Power regulation device based on controlled silicon |
| CN102306935A (en) * | 2011-09-13 | 2012-01-04 | 上海交通大学 | Dynamic power flow control device with wave trap and control method for controllable transformer |
| CN103631187A (en) * | 2013-12-12 | 2014-03-12 | 国家电网公司 | High-speed switch control device |
| CN103683214A (en) * | 2012-09-21 | 2014-03-26 | 哈尔滨帕特尔科技股份有限公司 | High-voltage circuit breaker longevity protection device |
| CN103684109A (en) * | 2012-09-21 | 2014-03-26 | 哈尔滨帕特尔科技股份有限公司 | Pumped storage power station generator motor multifunctional control and protection device |
| CN103683307A (en) * | 2012-09-21 | 2014-03-26 | 哈尔滨帕特尔科技股份有限公司 | New type series compensated line subsynchronous resonance damping and short-circuit current limiting device |
| CN107611982A (en) * | 2017-08-17 | 2018-01-19 | 全球能源互联网研究院 | A kind of detection control circuit and method for bypass contactor |
| CN112436831A (en) * | 2020-10-27 | 2021-03-02 | 深圳市盛弘电气股份有限公司 | Current equalizing circuit and method of thyristor alternating current switch parallel circuit |
-
2009
- 2009-10-19 CN CN200910073065A patent/CN101710706A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931236A (en) * | 2010-08-20 | 2010-12-29 | 电子科技大学 | Power regulation device based on controlled silicon |
| CN102306935A (en) * | 2011-09-13 | 2012-01-04 | 上海交通大学 | Dynamic power flow control device with wave trap and control method for controllable transformer |
| CN102306935B (en) * | 2011-09-13 | 2013-08-07 | 上海交通大学 | Dynamic power flow control device with wave trap for controllable transformer |
| CN103683214A (en) * | 2012-09-21 | 2014-03-26 | 哈尔滨帕特尔科技股份有限公司 | High-voltage circuit breaker longevity protection device |
| CN103684109A (en) * | 2012-09-21 | 2014-03-26 | 哈尔滨帕特尔科技股份有限公司 | Pumped storage power station generator motor multifunctional control and protection device |
| CN103683307A (en) * | 2012-09-21 | 2014-03-26 | 哈尔滨帕特尔科技股份有限公司 | New type series compensated line subsynchronous resonance damping and short-circuit current limiting device |
| CN103631187A (en) * | 2013-12-12 | 2014-03-12 | 国家电网公司 | High-speed switch control device |
| CN107611982A (en) * | 2017-08-17 | 2018-01-19 | 全球能源互联网研究院 | A kind of detection control circuit and method for bypass contactor |
| CN107611982B (en) * | 2017-08-17 | 2021-06-29 | 全球能源互联网研究院 | Detection control circuit and method for bypass contactor |
| CN112436831A (en) * | 2020-10-27 | 2021-03-02 | 深圳市盛弘电气股份有限公司 | Current equalizing circuit and method of thyristor alternating current switch parallel circuit |
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Open date: 20100519 |