CN101872965A - Current-limiting energy storage circuit and control method thereof - Google Patents
Current-limiting energy storage circuit and control method thereof Download PDFInfo
- Publication number
- CN101872965A CN101872965A CN201010209714A CN201010209714A CN101872965A CN 101872965 A CN101872965 A CN 101872965A CN 201010209714 A CN201010209714 A CN 201010209714A CN 201010209714 A CN201010209714 A CN 201010209714A CN 101872965 A CN101872965 A CN 101872965A
- Authority
- CN
- China
- Prior art keywords
- switch
- tie point
- links
- current
- current source
- 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
Images
Classifications
-
- 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
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a superconductive current-limiting energy storage circuit and a control method thereof. A superconducting magnet is connected in series with a power grid through a current source converter, a filter capacitor, a switch, a voltage dependent resistor, a transformer and the like. In a normal state, the voltage of the filter capacitor is changed and the voltage distortion of the power grid is compensated by controlling the current injected into the filter capacitor by the current source converter so as to improve the quality of the power supply voltage of a load. When a circuit is short-circuited, the filter capacitor is disconnected with the power grid through the switch and the voltage dependent resistor, and all the switches of the current source converter are turned on, so that the superconducting magnet is connected in series with the power grid in the form of uncontrolled rectifier so as to limit the fault current.
Description
Technical field
The present invention relates to a kind of current-limiting energy storage circuit and control method thereof.
Background technology
Along with fast development of national economy, society constantly increases electricity needs, driven the continuous development of electric power system, unit and station capacity, substation capacity, city and central concentrated load constantly increase, just make between the electric power system interconnected, short circuit current level in the electrical networks at different levels improves constantly, and short trouble is also increasing to the destructiveness of electric power system and continuous electric equipment thereof.And in growing to the power requirement amount, people also have higher requirement to the quality of power supply, power supply reliability and fail safe etc.Yet the transient stability problem of big electrical network is more outstanding, and wherein one of most important reason is because the conventional electric power technology lacks effective short trouble current limiting technique.At present, extensively adopt circuit breaker that short circuit current is fully cut-off in the world, because short circuit current level is directly related with the capacity of system, under the certain situation of the specified drop-out current level of circuit breaker, adopt and fully cut-off the growth that short circuit current will limit the electric power system capacity, and the circuit breaker price rises rapidly along with the increase of its specified drop-out current.Along with the expansion of net capacity and scale, it is more serious that this problem will become.
Meanwhile, along with information technology and microelectric technique are penetrated into industry and people's various fields in life increasingly extensively, and then the quality of power supply and power supply reliability proposed more and more higher requirement, the conventional electric power technology has been difficult to adapt to people's this requirement.
Short-circuit fault current limiter is the effective way that solves the short trouble problem.It seals in impedance and comes fault current limiting by when electrical network is short-circuited in faulty line, with the purpose that reaches the protection power equipment and circuit breaker can reliably be cut-off.And superconductive energy storage system (SMES) has the advantage that reaction speed is fast, power density is high and conversion efficiency is high, can bring into play irreplaceable effect aspect the dynamic stability problem that solves existing electric power system, the raising quality of power supply and the power supply reliability.United States Patent (USP) U.S 5,726,848 " fault current limiter and AC circuit breaker " has proposed a kind of short-circuit fault current limiter, as shown in Figure 1.It adopts a kind of single-phase thyristor rectifier bridge construction, and current-limiting inductance is connected in parallel on the dc terminal of rectifier bridge, and the phase shifting angle by the control thyristor comes fault current limiting.The subject matter of this patent is the harmonic content height, and is bigger to the influence of load; Complicated with period control method, reliability is low.U.S. Pat 2002/0030952 " superconducting magnet charging method and device " has proposed a kind of superconductive energy storage system structure, as shown in Figure 2.It can realize the protection to critical loads, and to improve power supply quality, its major defect is a function singleness, and the equipment rate is low with rate.Chinese patent CN100527560C " a kind of bridge circuit type current limiting energy storage circuit " has proposed a kind of circuit that can realize failure current limit and load terminal voltage protection simultaneously, as shown in Figure 3.Its major defect is the function that can only realize failure current limit to a circuit, and an other circuit is realized the function of load terminal voltage protection.Can only be applicable to specific occasions, applicable surface is low.Chinese patent CN100527559C " a kind of line-to-line voltage compensation type current limiting energy storage circuit " has proposed a kind of circuit that can realize failure current limit and load terminal voltage protection simultaneously, as shown in Figure 4.Its major defect is because converter is connected with electrical network by current-limiting inductance and transformer, because the existence of current-limiting inductance can't be stablized the voltage at control transformer two ends, realizes that therefore the difficulty of load terminal voltage protection is big, and reliability is low.Chinese patent 200910241236.3 " a kind of superconducting current-limiting energy storage circuit ", as shown in Figure 5.Realized the function of energy storage and failure current limit simultaneously, but its major defect is that filter capacitor links to each other with circuit all the time in the failure current limit process, might produce resonance with current-limiting inductance, thereby influences the effect of failure current limit.
Summary of the invention
In order to overcome the deficiency of prior art, the present invention proposes a kind of superconducting current-limiting energy storage circuit and failure current limit method thereof, it is connected in series by current source converter, filter capacitor, switch, piezo-resistance and transformer etc. superconducting magnet with electrical network.Under normal condition, inject the electric current of filter capacitor by Control current source current transformer, change the voltage of filter capacitor, the voltage distortion of compensation network, and then improve the supply power voltage quality of load.When circuit is short-circuited fault, by switch and piezo-resistance, filter capacitor is connected with the electrical network disconnection, and opens all switches of current source converter, make superconducting magnet seal in electrical network, thereby play the effect of failure current limit with the form of not controlling rectification.
Superconducting current-limiting energy storage circuit of the present invention has following two kinds of versions:
1, superconducting current-limiting energy storage circuit structure of the present invention is as follows: first switch, second switch, the 3rd switch, the 4th switch, the 5th switch and the 6th switch are formed first current source converter.The negative electrode of first switch links to each other with the anode of the 4th switch, and its tie point is the first interchange tie point; First switch and the 4th switch constitute first half-bridge of first current source inverter; The negative electrode of second switch links to each other with the anode of the 5th switch, and its tie point is the second interchange tie point; Second switch and the 5th switch constitute second half-bridge of first current source inverter; The negative electrode of the 3rd switch links to each other with the anode of the 6th switch, and its tie point is the 3rd interchange tie point; The 3rd switch and the 6th switch constitute the 3rd half-bridge of first current source inverter.The anode of first switch, second switch and the 3rd switch links together, and its tie point is the first direct current tie point; The negative electrode of the 4th switch, the 5th switch and the 6th switch links together, and its tie point is the second direct current tie point; The anode that minion is closed links to each other with the second direct current tie point, and the negative electrode that minion is closed links to each other with the first direct current tie point.The two ends of superconducting magnet link to each other with the 3rd direct current tie point with the first direct current tie point respectively.The electric current outflow end of first current source links to each other with the 3rd direct current tie point, and the electric current of first current source flows into end and links to each other with the second direct current tie point.Exchanging tie point with first after one end on the end that octavo is closed and first single-phase transformer time limit links to each other links to each other; The other end that octavo is closed links to each other with an end of first filter capacitor.Exchanging tie point with second after one end on one end of the 9th switch and second single-phase transformer time limit links to each other links to each other; The other end of the 9th switch links to each other with an end of second filter capacitor.Exchanging tie point with the 3rd after one end on one end of the tenth switch and the 3rd single-phase transformer time limit links to each other links to each other; The other end of the tenth switch links to each other with an end of the 3rd filter capacitor.The continuous formation the 4th of the other end of the other end of the other end of first filter capacitor, second filter capacitor and the 3rd filter capacitor exchanges tie point.The other end on first single-phase transformer, second single-phase transformer and the 3rd single-phase transformer time limit and the 4th exchanges tie point and is connected.The two ends on the inferior limit of first single-phase transformer link to each other with the two ends of first piezo-resistance; The two ends on the inferior limit of second single-phase transformer link to each other with the two ends of second piezo-resistance; The two ends on the inferior limit of the 3rd single-phase transformer link to each other with the two ends of the 3rd piezo-resistance.One end on the former limit of first single-phase transformer and electrical network first end of power supply mutually link to each other, and the other end on the former limit of first single-phase transformer links to each other with an end of first phase load.One end on the former limit of second single-phase transformer and electrical network second end of power supply mutually link to each other, and the other end on the former limit of second single-phase transformer links to each other with an end of second phase load.One end on the former limit of the 3rd single-phase transformer links to each other with an end of electrical network third phase power supply respectively, and the other end on the former limit of the 3rd single-phase transformer links to each other with an end of third phase load.Described first switch, second switch, the 3rd switch, the 4th switch, the 5th switch, the 6th switch and minion are closed and are the inverse-impedance type switch, perhaps substitute described inverse-impedance type switch by the contrary diode of type switch series connection of leading.Octavo pass, the 9th switch and the tenth switch are the bidirectional high speed switch.
Control method to the superconducting current-limiting energy storage circuit of this version is as follows: when 1, just starting in system, all switches are all closed, and this moment, the voltage drop value on transformer time limit approached zero, and superconducting current-limiting energy storage circuit is to the not influence of voltage of load; This moment, first current source charged to superconducting magnet, and the electric current of superconducting magnet is risen near the set-point.2, under normal condition, minion is closed and is disconnected, octavo pass, the 9th switch and the tenth switch closure.First current source converter by change injecting filter capacitor electric current so that change voltage on the filter capacitor, this voltage acts on the inferior limit of transformer, thus distortion that can compensation network voltage improves the supply power voltage quality of load end.Simultaneously first current source discharges and recharges superconducting magnet, with the electric current of keeping superconducting magnet near set-point.3, when detecting the circuit overcurrent, all switches of first current source converter are all closed, and minion pass, octavo pass, the 9th switch, the tenth switch disconnect; If the amplitude of line current surpasses the electric current of superconducting magnet, then with the form of the not controlling rectification superconducting magnet of flowing through, superconducting magnet is sealed in electrical network to all line currents, thereby plays the effect of failure current limit by first current source converter.If line current has surpassed the electric current of superconducting magnet, the part that does not then exceed is still by first current source converter superconducting magnet of flowing through, and the part that exceeds induces high voltage owing to lack path, puncture piezo-resistance, carry out earial drainage and discharge the overshoot energy by piezo-resistance.Piezo-resistance arrives the voltage clamp that induces the puncture voltage of piezo-resistance simultaneously, thereby guarantees that first current source converter is unlikely to damage because of overvoltage; When the amplitude of line current drops under the superconducting magnet current value, all electric currents all will flow through superconducting magnet with the form of not controlling rectification, thereby fault current is afterwards played restriction completely.And first current source discharges to superconducting magnet, remains in the safe scope with the electric current with superconducting magnet.Owing to by switching manipulation, in the process of failure current limit, filter capacitor is isolated current path fully, therefore can prevent to produce resonance between filter capacitor and the current-limiting inductance, thereby can guarantee the effect of failure current limit.
A kind of superconducting current-limiting energy storage circuit of 2 the present invention, can also be following structure: first switch, second switch, the 3rd switch and the 4th switch are formed first current source converter.The negative electrode of the 4th switch links to each other with the anode of first switch, and its tie point is the first interchange tie point for its tie point; The negative electrode of the 3rd switch links to each other with the anode of second switch, and its tie point is the second interchange tie point for its tie point; The negative electrode of first switch and second switch links to each other, and its tie point is the first direct current tie point for its tie point; The 3rd switch links to each other with the anode of the 4th switch, and its tie point is the second direct current tie point for its tie point.The 5th switch, the 6th switch, minion are closed and octavo is closed composition second current source converter.The negative electrode that octavo is closed links to each other with the anode of the 5th switch, and its tie point is the 3rd interchange tie point; The negative electrode that minion is closed links to each other with the anode of the 6th switch, and its tie point is the 4th interchange tie point; The 5th switch links to each other with the negative electrode of the 6th switch, and its tie point is the 3rd direct current tie point; Minion is closed the anode that closes with octavo and is linked to each other, and its tie point is the 4th direct current tie point.The 9th switch, the tenth switch, the 11 switch and twelvemo are closed and are formed the 3rd current source converter.The negative electrode that twelvemo is closed links to each other with the anode of the 9th switch, and its tie point is the 5th interchange tie point; The negative electrode of the 11 switch links to each other with the anode of the tenth switch, and its tie point is the 6th interchange tie point; The 9th switch links to each other with the negative electrode of the tenth switch, and its tie point is the 5th direct current tie point; The 11 switch links to each other with the anode that twelvemo is closed, and its tie point is the 6th direct current tie point.The two ends of superconducting magnet link to each other with the 7th direct current tie point with the second direct current tie point respectively.The electric current outflow end of first current source links to each other with the 7th direct current tie point, and the electric current of first current source flows into end and links to each other with the 5th direct current tie point.The first direct current tie point links to each other with the 4th direct current tie point; The 3rd direct current tie point links to each other with the 6th direct current tie point.The anode of the 13 switch links to each other with the first direct current tie point, and the negative electrode of the 13 switch links to each other with the second direct current tie point; The anode of the 14 switch links to each other with the 3rd direct current tie point, and the negative electrode of the 14 switch links to each other with the 4th direct current tie point; The anode of the 15 switch links to each other with the 5th direct current tie point, and the negative electrode of the 15 switch links to each other with the 6th direct current tie point.One end of first filter capacitor links to each other with the end that sixteenmo closes, and the other end of first filter capacitor exchanges tie point and links to each other with first.The other end that sixteenmo closes exchanges tie point and links to each other with second.The two ends on first single-phase transformer time limit exchange tie point respectively, and exchange tie point with second continuous with first.The two ends of first piezo-resistance exchange tie point respectively and exchange tie point with second and link to each other with first.One end of second filter capacitor links to each other with the end that the tenth minion is closed, and the other end of second filter capacitor exchanges tie point and links to each other with the 3rd.The other end that the tenth minion is closed exchanges tie point and links to each other with the 4th.The two ends on second single-phase transformer time limit exchange tie point respectively, and exchange tie point with the 4th continuous with the 3rd.The two ends of second piezo-resistance exchange tie point respectively and exchange tie point with the 4th and link to each other with the 3rd.One end of the 3rd filter capacitor links to each other with the end that eighteenmo closes, and the other end of the 3rd filter capacitor exchanges tie point and links to each other with the 5th.The other end that eighteenmo closes exchanges tie point and links to each other with the 6th.The two ends on the 3rd single-phase transformer time limit exchange tie point respectively, and exchange tie point with the 6th continuous with the 5th.The two ends of the 3rd piezo-resistance exchange tie point respectively and exchange tie point with the 6th and link to each other with the 5th.An end of power supply and an end of first phase load link to each other mutually with electrical network first respectively at the two ends on the former limit of first single-phase transformer; An end of power supply and an end of second phase load link to each other mutually with electrical network second respectively at the two ends on the former limit of second single-phase transformer; The two ends on the former limit of the 3rd single-phase transformer link to each other with an end of electrical network third phase power supply and an end of third phase load respectively.Described first switch, second switch, the 3rd switch, the 4th switch, the 5th switch, the 6th switch, minion pass, octavo pass, the 9th switch, the tenth switch, the 11 switch, twelvemo pass, the 13 switch, the 14 switch and the 15 switch are the inverse-impedance type switch, perhaps substitute described inverse-impedance type switch with the contrary diode of type switch series connection of leading.Sixteenmo closes, the tenth minion is closed and the eighteenmo pass is the bidirectional high speed switch.
Control method to the superconducting current-limiting energy storage circuit of this version is as follows: when 1, just starting in system, all switches are all closed, and this moment, the voltage drop value on transformer time limit approached zero, and superconducting current-limiting energy storage circuit is to the not influence of voltage of load.This moment, the charging of the first current source superconducting magnet rose near the set-point electric current of superconducting magnet.2, under normal condition, the 13 switch, the 14 switch and the 15 switch disconnect, and sixteenmo closes, the tenth minion is closed and eighteenmo closes closed.First current source converter, second current source converter and the 3rd current source converter inject the electric current of filter capacitor and then the voltage on the change filter capacitor by change, this voltage acts on the inferior limit of transformer, thereby distortion that can compensation network voltage improves the supply power voltage quality of load end.Simultaneously first current source discharges and recharges superconducting magnet, with the electric current of keeping superconducting magnet near set-point.3, when detecting the circuit overcurrent, all switches of first current source converter, second current source converter and the 3rd current source converter are all closed, and the 13 switch, the 14 switch, the 15 switch, sixteenmo close, the tenth minion is closed and eighteenmo closes disconnection.If the amplitude of line current does not surpass the electric current of superconducting magnet, then all line currents by first current source converter, second current source converter and the 3rd current source converter with the form of the not controlling rectification superconducting magnet of flowing through, superconducting magnet is sealed in electrical network, thereby plays the effect of failure current limit.If line current has surpassed the electric current of superconducting magnet, the part that does not then exceed is still by first current source converter, second current source converter and the 3rd current source converter superconducting magnet of flowing through.The part that exceeds induces high voltage owing to lack path, punctures piezo-resistance, carries out earial drainage and discharges the overshoot energy by piezo-resistance.Piezo-resistance arrives the voltage clamp that induces the puncture voltage of piezo-resistance simultaneously, thereby guarantees that first current source converter, second current source converter and the 3rd current source converter are unlikely to damage because of overvoltage.When the amplitude of line current drops under the superconducting magnet current value, all electric currents all will flow through superconducting magnet with the form of not controlling rectification, thereby fault current is afterwards played restriction completely.And first current source discharges to superconducting magnet, remains in the safe scope with the electric current with superconducting magnet.Owing to by switching manipulation, in the process of failure current limit, filter capacitor is isolated current path fully, therefore can prevent to produce resonance between filter capacitor and the current-limiting inductance, thereby can guarantee the effect of failure current limit.
Description of drawings
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is the topology diagram of United States Patent (USP) U.S 5,726,848 " fault current limiter and AC circuit breaker ";
Fig. 2 is the topology diagram of U.S. Pat 2002/0030952 " superconducting magnet charging method and device ";
Fig. 3 is the topology diagram of Chinese patent CN100527560C " a kind of bridge circuit type current limiting energy storage circuit ";
Fig. 4 is the topology diagram of Chinese patent CN100527559C " a kind of line-to-line voltage compensation type current limiting energy storage circuit ";
Fig. 5 is the topology diagram of Chinese patent 200910241236.3 " a kind of superconducting current-limiting energy storage circuit ";
Fig. 6 is the circuit topological structure figure of the embodiment of the invention 1;
Fig. 7 is the circuit topological structure figure of the embodiment of the invention 2.
Embodiment
Fig. 6 is the topological structure of embodiments of the invention 1.As shown in Figure 6, the structure of the embodiment of the invention 1 is as follows: first switch S 1, second switch S2, the 3rd switch S 3, the 4th switch S 4, the 5th switch S 5 and the 6th switch S 6 are formed the first current source converter CSC1.The negative electrode of first switch S 1 links to each other with the anode of the 4th switch S 4, and its tie point is the first interchange tie point PA1.First switch S 1 and the 4th switch S 4 constitute the first half-bridge HB1 of the first current source inverter CSC1.The negative electrode of second switch S2 links to each other with the anode of the 5th switch S 5, and its tie point is the second interchange tie point PA2.Second switch S2 and the 5th switch S 5 constitute the second half-bridge HB2 of the first current source inverter CSC1.The negative electrode of the 3rd switch S 3 links to each other with the anode of the 6th switch S 6, and its tie point is the 3rd interchange tie point PA3.The 3rd switch S 3 and the 6th switch S 6 constitute the 3rd half-bridge HB3 of the first current source inverter CSC1.The anode of first switch S 1, second switch S2 and the 3rd switch S 3 links together, and its tie point is the first direct current tie point PD1; The negative electrode of the 4th switch S 4, the 5th switch S 5 and the 6th switch S 6 links together, and its tie point is the second direct current tie point PD2.The anode that minion is closed S7 links to each other with the second direct current tie point PD2, and the negative electrode that minion is closed S7 links to each other with the first direct current tie point PD1.The two ends of superconducting magnet Lsc link to each other with the 3rd direct current tie point PD3 with the first direct current tie point PD1 respectively.The electric current outflow end of the first current source Idc links to each other with the 3rd direct current tie point PD3, and the electric current of first current source flows into end and links to each other with the second direct current tie point PD2.Exchanging tie point PA1 with first after one end on Tr1 the limit of an end and first single-phase transformer of octavo pass S8 links to each other links to each other; The other end that octavo is closed S8 links to each other with the end of the first filter capacitor C1.Exchanging tie point PA2 with second after one end on Tr2 limit of one end of the 9th switch S 9 and second single-phase transformer links to each other links to each other; The other end of the 9th switch S 9 links to each other with the end of the second filter capacitor C2.Exchanging tie point PA3 with the 3rd after one end on Tr3 limit of one end of the tenth switch S 10 and the 3rd single-phase transformer links to each other links to each other.The other end of the tenth switch S 10 links to each other with the end of the 3rd filter capacitor C3.The other end of the other end of the first filter capacitor C1, the second filter capacitor C2 links to each other with the other end of the 3rd filter capacitor C3, and its tie point is the 4th interchange tie point PA4; The other end on the first single-phase transformer Tr1, Tr3 limit of the second single-phase transformer Tr2 and the 3rd single-phase transformer and the 4th exchanges tie point PA4 and is connected.The two ends on the inferior limit of the first single-phase transformer Tr1 link to each other with the two ends of the first piezo-resistance V1; The two ends on the inferior limit of the second single-phase transformer Tr2 link to each other with the two ends of the second piezo-resistance V2; The two ends on the inferior limit of the 3rd single-phase transformer Tr3 link to each other with the two ends of the 3rd piezo-resistance V3.One end on the former limit of the first single-phase transformer Tr1 and electrical network first end of power supply Us1 mutually link to each other, and the other end on the former limit of the first single-phase transformer Tr1 links to each other with the end of the first phase load Z1.One end on the former limit of the second single-phase transformer Tr2 and electrical network second end of power supply Us2 mutually link to each other, and the other end on the former limit of the second single-phase transformer Tr2 links to each other with the end of the second phase load Z2.One end on the former limit of the 3rd single-phase transformer Tr3 links to each other with the end of electrical network third phase power supply Us3 respectively, and the other end on the former limit of the 3rd single-phase transformer Tr3 links to each other with the end of third phase load Z3.Described first switch S 1, second switch S2, the 3rd switch S 3, the 4th switch S 4, the 5th switch S 5, the 6th switch S 6 and minion are closed S7 and are the inverse-impedance type switch, perhaps substitute described inverse-impedance type switch by the contrary diode of type switch series connection of leading.It is the bidirectional high speed switch that octavo is closed S8, the 9th switch S 9 and the tenth switch S 10.
Control method to embodiment shown in Figure 61 is: when 1, just starting in system, all switches are all closed, and this moment, the voltage drop value on transformer time limit approached zero, and superconducting current-limiting energy storage circuit is to the not influence of voltage of load.This moment, the first current source Idc charged to superconducting magnet, and the electric current of superconducting magnet is risen near the set-point.2, under normal condition, minion is closed S7 and is disconnected, and octavo is closed S8, the 9th switch S 9 and the tenth switch S 10 closures.The first current source converter CSC1 by change injecting filter capacitor electric current so that change voltage on the filter capacitor, this voltage acts on the inferior limit of transformer, thus distortion that can compensation network voltage improves the supply power voltage quality of load end.Simultaneously the first current source Idc discharges and recharges superconducting magnet, with the electric current of keeping superconducting magnet near set-point.3, when detecting the circuit overcurrent, all switches of the first current source converter CSC1 are all closed, and minion is closed S7, octavo is closed S8, the 9th switch S 9,10 disconnections of the tenth switch S.If the amplitude of line current surpasses the electric current of superconducting magnet, then with the form of the not controlling rectification superconducting magnet of flowing through, superconducting magnet is sealed in electrical network to all line currents, thereby plays the effect of failure current limit by the first current source converter CSC1.If line current has surpassed the electric current of superconducting magnet, the part that does not then exceed is still by the first current source converter CSC1 superconducting magnet of flowing through, and the part that exceeds induces high voltage owing to lack path, puncture piezo-resistance, carry out earial drainage and discharge the overshoot energy by piezo-resistance.Piezo-resistance arrives the voltage clamp that induces the puncture voltage of piezo-resistance simultaneously, thereby guarantees that the first current source converter CSC1 is unlikely to damage because of overvoltage.When the amplitude of line current drops under the superconducting magnet current value, all electric currents all will flow through superconducting magnet with the form of not controlling rectification, thereby fault current is afterwards played restriction completely.And the first current source Idc discharges to superconducting magnet, the electric current of superconducting magnet is remained in the safe scope as far as possible.Owing to by switching manipulation, in the process of failure current limit, filter capacitor is isolated current path fully, therefore can prevent to produce resonance between filter capacitor and the current-limiting inductance, thereby can guarantee the effect of failure current limit.
Fig. 7 is the topological structure of embodiments of the invention 2.As shown in Figure 7, the structure of the embodiment of the invention 2 is as follows: first switch S 1, second switch S2, the 3rd switch S 3 and the 4th switch S 4 are formed the first current source converter CSC1.The negative electrode of the 4th switch S 4 links to each other with the anode of first switch S 1, and its tie point is the first interchange tie point PA1; The negative electrode of the 3rd switch S 3 links to each other with the anode of second switch S2, and its tie point is the second interchange tie point PA2.The negative electrode of first switch S 1 and second switch S2 links to each other, and its tie point is the first direct current tie point PD1; The anode of the 3rd switch S 3 and the 4th switch S 4 links to each other, and its tie point is the second direct current tie point PD2.The 5th switch S 5, the 6th switch S 6, minion close S7 and octavo pass S8 forms the second current source converter CSC2.The negative electrode that octavo is closed S8 links to each other with the anode of the 5th switch S 5, and its tie point is the 3rd interchange tie point PA3; The negative electrode that minion is closed S7 links to each other with the anode of the 6th switch S 6, and its tie point is the 4th interchange tie point PA4.The negative electrode of the 5th switch S 5 and the 6th switch S 6 links to each other, and its tie point is the 3rd direct current tie point PD3; Minion is closed S7 and is linked to each other with the anode that octavo is closed S8, and its tie point is the 4th direct current tie point PD4.The 9th switch S 9, the tenth switch S the 10, the 11 switch S 11 and twelvemo pass S12 form the 3rd current source converter CSC3.The negative electrode that twelvemo is closed S12 links to each other with the anode of the 9th switch S 9, and its tie point is the 5th interchange tie point PA5; The negative electrode of the 11 switch S 11 links to each other with the anode of the tenth switch S 10, and its tie point is the 6th interchange tie point PA6.The negative electrode of the 9th switch S 9 and the tenth switch S 10 links to each other, and its tie point is the 5th direct current tie point PD5; The 11 switch S 11 links to each other with the anode that twelvemo is closed S12, and its tie point is the 6th direct current tie point PD6.The two ends of superconducting magnet Lsc link to each other with the 7th direct current tie point PD7 with the second direct current tie point PD2 respectively.The electric current outflow end of the first current source Idc links to each other with the 7th direct current tie point PD7, and the electric current of first current source flows into end and links to each other with the 5th direct current tie point PD5.The first direct current tie point PD1 links to each other with the 4th direct current tie point PD4; The 3rd direct current tie point PD3 links to each other with the 6th direct current tie point PD6.The anode of the 13 switch S 13 links to each other with the first direct current tie point PD1, and the negative electrode of the 13 switch S 13 links to each other with the second direct current tie point PD2.The anode of the 14 switch S 14 links to each other with the 3rd direct current tie point PD3, and the negative electrode of the 14 switch S 14 links to each other with the 4th direct current tie point PD4.The anode of the 15 switch S 15 links to each other with the 5th direct current tie point PD5, and the negative electrode of the 15 switch S 15 links to each other with the 6th direct current tie point PD6.The end of the first filter capacitor C1 links to each other with the end that sixteenmo closes S16, and the other end of the first filter capacitor C1 exchanges tie point PA1 and links to each other with first.The other end of sixteenmo pass S16 exchanges tie point PA2 and links to each other with second.The two ends on Tr1 limit of first single-phase transformer exchange tie point PA1 respectively and exchange tie point PA2 with second and link to each other with first.The two ends of the first piezo-resistance V1 exchange tie point PA1 respectively and exchange tie point PA2 with second and link to each other with first.The end of the second filter capacitor C2 links to each other with the end that the tenth minion is closed S17, and the other end of the second filter capacitor C2 exchanges tie point PA3 and links to each other with the 3rd.The other end of the tenth minion pass S17 exchanges tie point PA4 and links to each other with the 4th.The two ends on Tr2 limit of second single-phase transformer exchange tie point PA3 respectively and exchange tie point PA4 with the 4th and link to each other with the 3rd.The two ends of the second piezo-resistance V2 exchange tie point PA3 respectively and exchange tie point PA4 with the 4th and link to each other with the 3rd.The end of the 3rd filter capacitor C3 links to each other with the end that eighteenmo closes S18, and the other end of the 3rd filter capacitor C3 exchanges tie point PA5 and links to each other with the 5th.The other end of eighteenmo pass S18 exchanges tie point PA6 and links to each other with the 6th.The two ends on Tr3 limit of the 3rd single-phase transformer exchange tie point PA5 respectively and exchange tie point PA6 with the 6th and link to each other with the 5th.The two ends of the 3rd piezo-resistance V3 exchange tie point PA5 respectively and exchange tie point PA6 with the 6th and link to each other with the 5th.The end of power supply Us1 and the end of the first phase load Z1 link to each other mutually with electrical network first respectively at the two ends on the former limit of the first single-phase transformer Tr1; The end of power supply Us2 and the end of the second phase load Z2 link to each other mutually with electrical network second respectively at the two ends on the former limit of the second single-phase transformer Tr2; The two ends on the former limit of the 3rd single-phase transformer Tr3 link to each other with the end of electrical network third phase power supply Us3 and the end of third phase load Z3 respectively.Described first switch S 1, second switch S2, the 3rd switch S 3, the 4th switch S 4, the 5th switch S 5, the 6th switch S 6, minion are closed S7, octavo is closed S8, the 9th switch S 9, the tenth switch S the 10, the 11 switch S 11, twelvemo pass S12, the 13 switch S the 13, the 14 switch S 14 and the 15 switch S 15 and is the inverse-impedance type switch, perhaps substitute described inverse-impedance type switch with the contrary diode of type switch series connection of leading.Sixteenmo closes S16, the tenth minion closes S17 and eighteenmo pass S18 is the bidirectional high speed switch.
Control method to embodiment shown in Figure 72 is: when 1, just starting in system, all switches are all closed, and this moment, the voltage drop value on transformer time limit approached zero, and superconducting current-limiting energy storage circuit is to the not influence of voltage of load.This moment, the charging of the first current source Idc superconducting magnet rose near the set-point electric current of superconducting magnet.2, under normal condition, the 13 switch S the 13, the 14 switch S 14 and the 15 switch S 15 disconnect; Sixteenmo closes S16, the tenth minion closes S17 and eighteenmo closes the S18 closure.The first current source converter CSC1, the second current source converter CSC2 and the 3rd current source converter CSC3 inject the electric current of filter capacitor and then the voltage on the change filter capacitor by change, this voltage acts on the inferior limit of transformer, thereby distortion that can compensation network voltage improves the supply power voltage quality of load end.Simultaneously the first current source Idc discharges and recharges superconducting magnet, with the electric current of keeping superconducting magnet near set-point.3, when detecting the circuit overcurrent, all switches of the first current source converter CSC1, the second current source converter CSC2 and the 3rd current source converter CSC3 are all closed.The 13 switch S the 13, the 14 switch S the 14, the 15 switch S 15, sixteenmo close S16, the tenth minion closes S17 and eighteenmo closes the S18 disconnection; If the amplitude of line current does not surpass the electric current of superconducting magnet, then all line currents by the first current source converter CSC1, the second current source converter CSC2 and the 3rd current source converter CSC3 with the form of the not controlling rectification superconducting magnet of flowing through, superconducting magnet is sealed in electrical network, thereby plays the effect of failure current limit.If line current has surpassed the electric current of superconducting magnet, the part that does not then exceed is still by the first current source converter CSC1, the second current source converter CSC2 and the 3rd current source converter CSC3 superconducting magnet of flowing through.The part that exceeds induces high voltage owing to lack path, punctures piezo-resistance, carries out earial drainage and discharges the overshoot energy by piezo-resistance.Piezo-resistance arrives the voltage clamp that induces the puncture voltage of piezo-resistance simultaneously, thereby guarantees that the first current source converter CSC1, the second current source converter CSC2 and the 3rd current source converter CSC3 are unlikely to damage because of overvoltage.When the amplitude of line current drops under the superconducting magnet current value, all electric currents all will flow through superconducting magnet with the form of not controlling rectification, thereby fault current is afterwards played restriction completely.And the first current source Idc discharges to superconducting magnet, the electric current of superconducting magnet is remained in the safe scope as far as possible.Owing to by switching manipulation, in the process of failure current limit, filter capacitor is isolated current path fully, therefore can prevent to produce resonance between filter capacitor and the current-limiting inductance, thereby can guarantee the effect of failure current limit.
Claims (4)
1. superconducting current-limiting energy storage circuit, it is characterized in that in described superconducting current-limiting energy storage circuit: first switch (S1), second switch (S2), the 3rd switch (S3), the 4th switch (S4), the 5th switch (S5) and the 6th switch (S6) are formed first current source converter (CSC1); The negative electrode of first switch (S1) links to each other with the anode of the 4th switch (S4), and its tie point is the first interchange tie point (PA1); First switch (S1) and the 4th switch (S4) constitute first half-bridge (HB1) of first current source inverter (CSC1); The negative electrode of second switch (S2) links to each other with the anode of the 5th switch (S5), and its tie point is the second interchange tie point (PA2); Second switch (S2) and the 5th switch (S5) constitute second half-bridge (HB2) of first current source inverter (CSC1); The negative electrode of the 3rd switch (S3) links to each other with the anode of the 6th switch (S6), and its tie point is the 3rd interchange tie point (PA3); The 3rd switch (S3) and the 6th switch (S6) constitute the 3rd half-bridge (HB3) of first current source inverter (CSC1); The anode of first switch (S1), second switch (S2) and the 3rd switch (S3) links together, and its tie point is the first direct current tie point (PD1); The negative electrode of the 4th switch (S4), the 5th switch (S5) and the 6th switch (S6) links together, and its tie point is the second direct current tie point (PD2); The anode that minion is closed (S7) links to each other with the second direct current tie point (PD2), and the negative electrode that minion is closed (S7) links to each other with the first direct current tie point (PD1); The two ends of superconducting magnet (Lsc) link to each other with the 3rd direct current tie point (PD3) with the first direct current tie point (PD1) respectively; The electric current outflow end of first current source (Idc) links to each other with the 3rd direct current tie point (PD3), and the electric current of first current source flows into end and links to each other with the second direct current tie point (PD2); Exchanging tie point (PA1) with first after one end of octavo pass (S8) and an end on the inferior limit of first single-phase transformer (Tr1) link to each other links to each other; The other end that octavo is closed (S8) links to each other with an end of first filter capacitor (C1); Exchanging tie point (PA2) with second after one end on one end of the 9th switch (S9) and the inferior limit of second single-phase transformer (Tr2) links to each other links to each other; The other end of the 9th switch (S9) links to each other with an end of second filter capacitor (C2); Exchanging tie point (PA3) with the 3rd after one end on one end of the tenth switch (S10) and the inferior limit of the 3rd single-phase transformer (Tr3) links to each other links to each other; The other end of the tenth switch (S10) links to each other with an end of the 3rd filter capacitor (C3); The continuous formation the 4th of the other end of the other end of the other end of first filter capacitor (C1), second filter capacitor (C2) and the 3rd filter capacitor (C3) exchanges tie point (PA4); The other end on first single-phase transformer (Tr1), second single-phase transformer (Tr2) and the inferior limit of the 3rd single-phase transformer (Tr3) and the 4th exchanges tie point (PA4) and is connected; The two ends on the inferior limit of first single-phase transformer (Tr1) link to each other with the two ends of first piezo-resistance (V1); The two ends on the inferior limit of second single-phase transformer (Tr2) link to each other with the two ends of second piezo-resistance (V2); The two ends on the inferior limit of the 3rd single-phase transformer (Tr3) link to each other with the two ends of the 3rd piezo-resistance (V3); One end on the former limit of first single-phase transformer (Tr1) and electrical network first end of power supply (Us1) mutually link to each other, and the other end on the former limit of first single-phase transformer (Tr1) links to each other with an end of first phase load (Z1); One end on the former limit of second single-phase transformer (Tr2) and electrical network second end of power supply (Us2) mutually link to each other, and the other end on the former limit of second single-phase transformer (Tr2) links to each other with an end of second phase load (Z2); One end on the former limit of the 3rd single-phase transformer (Tr3) links to each other with an end of electrical network third phase power supply (Us3) respectively, and the other end on the former limit of the 3rd single-phase transformer (Tr3) links to each other with an end of third phase load (Z3); Described first switch (S1), second switch (S2), the 3rd switch (S3), the 4th switch (S4), the 5th switch (S5), the 6th switch (S6) and minion are closed (S7) and are the inverse-impedance type switch, perhaps substitute described inverse-impedance type switch by the contrary diode of type switch series connection of leading; It is bidirectional switch that octavo is closed (S8), the 9th switch (S9) and the tenth switch (S10).
2. superconducting current-limiting energy storage circuit according to claim 1 is characterized in that at the control method of described superconducting current-limiting energy storage circuit as follows:
When (1) just starting in system, all switches are all closed, and this moment, the voltage drop value on transformer time limit approached zero, and superconducting current-limiting energy storage circuit is to the not influence of voltage of load; First current source this moment (Idc) rises near the set-point electric current of superconducting magnet to the superconducting magnet charging;
(2) under normal condition, minion is closed (S7) and is disconnected; Octavo is closed (S8), the 9th switch (S9) and the tenth switch (S10) closure; First current source converter (CSC1) by change injecting filter capacitor electric current so that change voltage on the filter capacitor, this voltage acts on the inferior limit of transformer, thus distortion that can compensation network voltage improves the supply power voltage quality of load end; Simultaneously first current source (Idc) discharges and recharges superconducting magnet, with the electric current of keeping superconducting magnet near set-point;
(3) when detecting the circuit overcurrent, all switches of first current source converter (CSC1) are all closed, and minion is closed (S7), octavo is closed (S8), the 9th switch (S9), the tenth switch (S10) disconnection; If the amplitude of line current surpasses the electric current of superconducting magnet, then with the form of the not controlling rectification superconducting magnet of flowing through, superconducting magnet is sealed in electrical network to all line currents, thereby plays the effect of failure current limit by first current source converter (CSC1); If line current has surpassed the electric current of superconducting magnet, the part that does not then exceed is still by first current source converter (CSC1) superconducting magnet of flowing through, and the part that exceeds induces high voltage owing to lack path, puncture piezo-resistance, carry out earial drainage and discharge the overshoot energy by piezo-resistance; Piezo-resistance arrives the voltage clamp that induces the puncture voltage of piezo-resistance simultaneously, thereby guarantees that first current source converter (CSC1) is unlikely to damage because of overvoltage; When the amplitude of line current drops under the superconducting magnet current value, all electric currents all will flow through superconducting magnet with the form of not controlling rectification, thereby fault current is afterwards played restriction completely; And first current source (Idc) discharges to superconducting magnet, remains in the safe scope with the electric current with superconducting magnet.
3. a superconducting current-limiting energy storage circuit is characterized in that, in described superconducting current-limiting energy storage circuit: first switch (S1), second switch (S2), the 3rd switch (S3) and the 4th switch (S4) are formed first current source converter (CSC1); The negative electrode of the 4th switch (S4) links to each other with the anode of first switch (S1), and its tie point is the first interchange tie point (PA1); The negative electrode of the 3rd switch (S3) links to each other with the anode of second switch (S2), and its tie point is the second interchange tie point (PA2); First switch (S1) links to each other with the negative electrode of second switch (S2), and its tie point is the first direct current tie point (PD1); The 3rd switch (S3) links to each other with the anode of the 4th switch (S4), and its tie point is the second direct current tie point (PD2); The 5th switch (S5), the 6th switch (S6), minion close (S7) and octavo is closed (S8) composition second current source converter (CSC2); The negative electrode that octavo is closed (S8) links to each other with the anode of the 5th switch (S5), and its tie point is the 3rd interchange tie point (PA3); The negative electrode that minion is closed (S7) links to each other with the anode of the 6th switch (S6), and its tie point is the 4th interchange tie point (PA4); The 5th switch (S5) links to each other with the negative electrode of the 6th switch (S6), and its tie point is the 3rd direct current tie point (PD3); Minion is closed (S7) and is linked to each other with the anode that octavo is closed (S8), and its tie point is the 4th direct current tie point (PD4); The 9th switch (S9), the tenth switch (S10), the 11 switch (S11) and twelvemo are closed (S12) composition the 3rd current source converter (CSC3); The negative electrode that twelvemo is closed (S12) links to each other with the anode of the 9th switch (S9), and its tie point is the 5th interchange tie point (PA5); The negative electrode of the 11 switch (S11) links to each other with the anode of the tenth switch (S10), and its tie point is the 6th interchange tie point (PA6); The 9th switch (S9) links to each other with the negative electrode of the tenth switch (S10), and its tie point is the 5th direct current tie point (PD5); The 11 switch (S11) links to each other with the anode that twelvemo is closed (S12), and its tie point is the 6th direct current tie point (PD6); The two ends of superconducting magnet (Lsc) link to each other with the 7th direct current tie point (PD7) with the second direct current tie point (PD2) respectively; The electric current outflow end of first current source (Idc) links to each other with the 7th direct current tie point (PD7), and the electric current of first current source flows into end and links to each other with the 5th direct current tie point (PD5); The first direct current tie point (PD1) links to each other with the 4th direct current tie point (PD4); The 3rd direct current tie point (PD3) links to each other with the 6th direct current tie point (PD6); The anode of the 13 switch (S13) links to each other with the first direct current tie point (PD1), and the negative electrode of the 13 switch (S13) links to each other with the second direct current tie point (PD2); The anode of the 14 switch (S14) links to each other with the 3rd direct current tie point (PD3), and the negative electrode of the 14 switch (S14) links to each other with the 4th direct current tie point (PD4); The anode of the 15 switch (S15) links to each other with the 5th direct current tie point (PD5), and the negative electrode of the 15 switch (S15) links to each other with the 6th direct current tie point (PD6); One end of first filter capacitor (C1) links to each other with the end that sixteenmo closes (S16); The other end of first filter capacitor (C1) exchanges tie point (PA1) and links to each other with first; The other end of sixteenmo pass (S16) exchanges tie point (PA2) and links to each other with second; The two ends on the inferior limit of first single-phase transformer (Tr1) exchange tie point (PA1) respectively and exchange tie point (PA2) with second and link to each other with first; The two ends of first piezo-resistance (V1) exchange tie point (PA1) respectively and exchange tie point (PA2) with second and link to each other with first; One end of second filter capacitor (C2) links to each other with the end that the tenth minion is closed (S17); The other end of second filter capacitor (C2) exchanges tie point (PA3) and links to each other with the 3rd; The other end of the tenth minion pass (S17) exchanges tie point (PA4) and links to each other with the 4th; The two ends on the inferior limit of second single-phase transformer (Tr2) exchange tie point (PA3) respectively and exchange tie point (PA4) with the 4th and link to each other with the 3rd; The two ends of second piezo-resistance (V2) exchange tie point (PA3) respectively and exchange tie point (PA4) with the 4th and link to each other with the 3rd; One end of the 3rd filter capacitor (C3) links to each other with the end that eighteenmo closes (S18); The other end of the 3rd filter capacitor (C3) exchanges tie point (PA5) and links to each other with the 5th; The other end of eighteenmo pass (S18) exchanges tie point (PA6) and links to each other with the 6th; The two ends on the inferior limit of the 3rd single-phase transformer (Tr3) exchange tie point (PA5) respectively and exchange tie point (PA6) with the 6th and link to each other with the 5th; The two ends of the 3rd piezo-resistance (V3) exchange tie point (PA5) respectively and exchange tie point (PA6) with the 6th and link to each other with the 5th; An end of power supply (Us1) and an end of first phase load (Z1) link to each other mutually with electrical network first respectively at the two ends on the former limit of first single-phase transformer (Tr1); An end of power supply (Us2) and an end of second phase load (Z2) link to each other mutually with electrical network second respectively at the two ends on the former limit of second single-phase transformer (Tr2); The two ends on the former limit of the 3rd single-phase transformer (Tr3) link to each other with an end of electrical network third phase power supply (Us3) and an end of third phase load (Z3) respectively; Described first switch (S1), second switch (S2), the 3rd switch (S3), the 4th switch (S4), the 5th switch (S5), the 6th switch (S6), minion are closed (S7), octavo is closed (S8), the 9th switch (S9), the tenth switch (S10), the 11 switch (S11), twelvemo pass (S12), the 13 switch (S13), the 14 switch (S14) and the 15 switch (S15) and is the inverse-impedance type switch, perhaps substitute described inverse-impedance type switch with the contrary diode of type switch series connection of leading; Sixteenmo closes (S16), the tenth minion closes (S17) and eighteenmo pass (S18) is a bidirectional switch.
4. according to the described superconducting current-limiting energy storage circuit of claim 3, it is characterized in that at the control method of described superconducting current-limiting energy storage circuit as follows:
When (1) just starting in system, all switches are all closed, and this moment, the voltage drop value on transformer time limit approached zero, and superconducting current-limiting energy storage circuit is to the not influence of voltage of load; This moment, the charging of first current source (Idc) superconducting magnet rose near the set-point electric current of superconducting magnet;
(2) under normal condition, the 13 switch (S13), the 14 switch (S14) and the 15 switch (S15) disconnect; Sixteenmo closes (S16), the tenth minion closes (S17) and eighteenmo closes (S18) closure; First current source converter (CSC1), second current source converter (CSC2) and the 3rd current source converter (CSC3) inject the electric current of filter capacitor and then the voltage on the change filter capacitor by change, this voltage acts on the inferior limit of transformer, thereby distortion that can compensation network voltage improves the supply power voltage quality of load end; Simultaneously first current source (Idc) discharges and recharges superconducting magnet, with the electric current of keeping superconducting magnet near set-point;
(3) when detecting the circuit overcurrent, all switches of first current source converter (CSC1), second current source converter (CSC2) and the 3rd current source converter (CSC3) are all closed, and the 13 switch (S13), the 14 switch (S14), the 15 switch (S15), sixteenmo close (S16), the tenth minion closes (S17) and eighteenmo closes (S18) disconnection; If the amplitude of line current does not surpass the electric current of superconducting magnet, then all line currents by first current source converter (CSC1), second current source converter (CSC2) and the 3rd current source converter (CSC3) with the form of the not controlling rectification superconducting magnet of flowing through, superconducting magnet is sealed in electrical network, thereby plays the effect of failure current limit; If line current has surpassed the electric current of superconducting magnet, the part that does not then exceed is still by first current source converter (CSC1), second current source converter (CSC2) and the 3rd current source converter (CSC3) superconducting magnet of flowing through, the part that exceeds is owing to lack path, induce high voltage, puncture piezo-resistance, carry out earial drainage and discharge the overshoot energy by piezo-resistance; Piezo-resistance arrives the voltage clamp that induces the puncture voltage of piezo-resistance simultaneously, thereby guarantees that first current source converter (CSC1), second current source converter (CSC2) and the 3rd current source converter (CSC3) are unlikely to damage because of overvoltage; When the amplitude of line current drops under the superconducting magnet current value, all electric currents all will flow through superconducting magnet with the form of not controlling rectification, thereby fault current is afterwards played restriction completely; And first current source (Idc) discharges to superconducting magnet, remains in the safe scope with the electric current with superconducting magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010209714.5A CN101872965B (en) | 2010-06-18 | 2010-06-18 | Current-limiting energy storage circuit and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010209714.5A CN101872965B (en) | 2010-06-18 | 2010-06-18 | Current-limiting energy storage circuit and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101872965A true CN101872965A (en) | 2010-10-27 |
| CN101872965B CN101872965B (en) | 2014-01-22 |
Family
ID=42997690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010209714.5A Expired - Fee Related CN101872965B (en) | 2010-06-18 | 2010-06-18 | Current-limiting energy storage circuit and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101872965B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005998A (en) * | 2010-11-23 | 2011-04-06 | 中国科学院电工研究所 | Low-voltage ride through circuit of double-feed type wind power generator |
| CN102231522A (en) * | 2011-07-01 | 2011-11-02 | 中国科学院电工研究所 | Power flow controller with failure current limiting function |
| CN102969705A (en) * | 2012-11-08 | 2013-03-13 | 中国科学院电工研究所 | Fault current limiter |
| CN103066580A (en) * | 2012-10-30 | 2013-04-24 | 中国科学院电工研究所 | Fault protection applied to wind power plant and energy stabilization circuit |
| CN103606924A (en) * | 2013-11-14 | 2014-02-26 | 广东电网公司电力科学研究院 | Dynamic voltage compensation apparatus and method |
| CN104600693A (en) * | 2015-01-07 | 2015-05-06 | 中国科学院电工研究所 | Energy storage breaker for direct current power grid |
| CN104600717A (en) * | 2015-01-07 | 2015-05-06 | 中国科学院电工研究所 | Series current source controller |
| CN105140968A (en) * | 2015-10-23 | 2015-12-09 | 武汉大学 | Microgrid transient performance intensification device and method based on cooperative control of fault current limit and quick energy storage |
| CN105743370A (en) * | 2016-03-29 | 2016-07-06 | 中国科学院电工研究所 | Superconductive energy storage converter and modulation mode thereof |
| CN112039101A (en) * | 2020-08-31 | 2020-12-04 | 广东电网有限责任公司广州供电局 | Voltage quality regulator |
| CN112514226A (en) * | 2018-07-30 | 2021-03-16 | 弗罗纽斯国际有限公司 | Inverter with intermediate circuit protection |
| CN114498609A (en) * | 2021-12-30 | 2022-05-13 | 清华四川能源互联网研究院 | Low-temperature electric energy conversion and current limiting circuit for combined compensation of superconducting energy storage-retired battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5021716A (en) * | 1990-05-18 | 1991-06-04 | Gte Products Corporation | Forward inverter ballast circuit |
| CN101707366A (en) * | 2009-11-27 | 2010-05-12 | 中国科学院电工研究所 | Inter-wire superconducting current-limiting tank circuits |
| CN201466723U (en) * | 2009-06-03 | 2010-05-12 | 洛阳新思路电气股份有限公司 | Electric device for improving quality of working power grid of electric arc furnace |
-
2010
- 2010-06-18 CN CN201010209714.5A patent/CN101872965B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5021716A (en) * | 1990-05-18 | 1991-06-04 | Gte Products Corporation | Forward inverter ballast circuit |
| CN201466723U (en) * | 2009-06-03 | 2010-05-12 | 洛阳新思路电气股份有限公司 | Electric device for improving quality of working power grid of electric arc furnace |
| CN101707366A (en) * | 2009-11-27 | 2010-05-12 | 中国科学院电工研究所 | Inter-wire superconducting current-limiting tank circuits |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005998B (en) * | 2010-11-23 | 2012-07-18 | 中国科学院电工研究所 | Low-voltage ride through circuit of double-feed type wind power generator |
| CN102005998A (en) * | 2010-11-23 | 2011-04-06 | 中国科学院电工研究所 | Low-voltage ride through circuit of double-feed type wind power generator |
| CN102231522B (en) * | 2011-07-01 | 2013-11-06 | 中国科学院电工研究所 | Power flow controller with failure current limiting function |
| CN102231522A (en) * | 2011-07-01 | 2011-11-02 | 中国科学院电工研究所 | Power flow controller with failure current limiting function |
| CN103066580B (en) * | 2012-10-30 | 2015-09-16 | 中国科学院电工研究所 | A kind of error protection for wind energy turbine set and energy stabilization circuit |
| CN103066580A (en) * | 2012-10-30 | 2013-04-24 | 中国科学院电工研究所 | Fault protection applied to wind power plant and energy stabilization circuit |
| CN102969705B (en) * | 2012-11-08 | 2015-01-21 | 中国科学院电工研究所 | Fault current limiter |
| CN102969705A (en) * | 2012-11-08 | 2013-03-13 | 中国科学院电工研究所 | Fault current limiter |
| CN103606924A (en) * | 2013-11-14 | 2014-02-26 | 广东电网公司电力科学研究院 | Dynamic voltage compensation apparatus and method |
| CN103606924B (en) * | 2013-11-14 | 2015-10-21 | 广东电网公司电力科学研究院 | A kind of dynamic voltage compensation device and method |
| CN104600693A (en) * | 2015-01-07 | 2015-05-06 | 中国科学院电工研究所 | Energy storage breaker for direct current power grid |
| CN104600717A (en) * | 2015-01-07 | 2015-05-06 | 中国科学院电工研究所 | Series current source controller |
| CN104600693B (en) * | 2015-01-07 | 2017-01-18 | 中国科学院电工研究所 | Energy storage breaker for direct current power grid |
| CN105140968B (en) * | 2015-10-23 | 2017-11-14 | 武汉大学 | A kind of micro-capacitance sensor transient performance intensifying device and method for coordinating control based on failure current limit fast energy storage |
| CN105140968A (en) * | 2015-10-23 | 2015-12-09 | 武汉大学 | Microgrid transient performance intensification device and method based on cooperative control of fault current limit and quick energy storage |
| CN105743370A (en) * | 2016-03-29 | 2016-07-06 | 中国科学院电工研究所 | Superconductive energy storage converter and modulation mode thereof |
| CN105743370B (en) * | 2016-03-29 | 2019-05-03 | 中国科学院电工研究所 | A kind of superconducting energy storage current transformer and its modulation system |
| CN112514226A (en) * | 2018-07-30 | 2021-03-16 | 弗罗纽斯国际有限公司 | Inverter with intermediate circuit protection |
| CN112039101A (en) * | 2020-08-31 | 2020-12-04 | 广东电网有限责任公司广州供电局 | Voltage quality regulator |
| CN112039101B (en) * | 2020-08-31 | 2022-06-21 | 广东电网有限责任公司广州供电局 | Voltage quality regulator |
| CN114498609A (en) * | 2021-12-30 | 2022-05-13 | 清华四川能源互联网研究院 | Low-temperature electric energy conversion and current limiting circuit for combined compensation of superconducting energy storage-retired battery |
| CN114498609B (en) * | 2021-12-30 | 2024-05-07 | 清华四川能源互联网研究院 | Low-temperature electric energy conversion and current limiting circuit for superconducting energy storage-retired battery joint compensation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101872965B (en) | 2014-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101872965B (en) | Current-limiting energy storage circuit and control method thereof | |
| CN101707367B (en) | Superconducting current-limiting energy storage circuit | |
| CN102684179B (en) | Hybrid short-circuit failure current limiter | |
| CN101789589B (en) | Mixed-type high-temperature superconducting short trouble current limiter | |
| CN103632895B (en) | A kind of DC circuit breaker | |
| CN107834505B (en) | The artificial zero passage high voltage DC breaker of current-limiting type self-charging type and its cutoff method | |
| CN103123882A (en) | Intelligent controller of bistable permanent-magnet vacuum circuit breaker | |
| CN101741076A (en) | YBCO high-temperature superconducting strip-based short circuit fault current limiter | |
| CN102005780B (en) | Fault protection and energy stabilizing circuit of double-fed wind driven generator | |
| CN102969705B (en) | Fault current limiter | |
| CN207010216U (en) | A kind of low-voltage direct breaker | |
| CN109412127A (en) | A kind of current limliting capacitance-resistance branch, resistance-capacitance type dc circuit breaker and control strategy | |
| CN101707366B (en) | Inter-wire superconducting current-limiting storage circuits | |
| CN101707365B (en) | Short-circuit fault current limiter | |
| CN102255298B (en) | Power electronic failure current limiter | |
| CN103633632A (en) | Saturated bridge type short circuit fault current limiter | |
| CN100495854C (en) | Short-circuit fault current limiter | |
| CN110970880B (en) | Converter station containing RL type superconducting current limiter and DC circuit breaker and DC fault processing strategy thereof | |
| CN102005998A (en) | Low-voltage ride through circuit of double-feed type wind power generator | |
| CN106998151A (en) | Multilevel converter based on asymmetric Shuangzi module and half-bridge submodule | |
| CN101794989B (en) | Current-limiting and controlling method of active damping of current-limiting and storage circuit | |
| CN105743370B (en) | A kind of superconducting energy storage current transformer and its modulation system | |
| CN100440673C (en) | Short-circuit fault current limiter | |
| CN100389530C (en) | Current-limiting energy-storing circuit | |
| CN110048378A (en) | A kind of middle bipolar short-circuit protection method of pressure direct current distribution based on semi-bridge type MMC |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20160618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |