CN101707365A - Short-circuit fault current limiter - Google Patents
Short-circuit fault current limiter Download PDFInfo
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- CN101707365A CN101707365A CN200910238797A CN200910238797A CN101707365A CN 101707365 A CN101707365 A CN 101707365A CN 200910238797 A CN200910238797 A CN 200910238797A CN 200910238797 A CN200910238797 A CN 200910238797A CN 101707365 A CN101707365 A CN 101707365A
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Abstract
The invention relates to a short-circuit fault current limiter which adopts a structure that three phases share one current-limiting resistor, limits the rise speed of fault current by a mode of leakage inductance of an isolation transformer or a mode combining the leakage inductance of the isolation transformer with current-limiting inductance, and connects a fault circuit into the shared current-limiting resistor in series by on-off action when a detected power grid is in overcurrent state, thus achieving the function of limiting the steady state value of the fault circuit. The three phases of the current limiter can be controlled independently, and the current-limiting operation of the fault phase does not generate any influence on non-fault phases, therefore, the flexibility is high; and simultaneously, as the structure of sharing one current-limiting resistor is adopted, the cost and the volume of the device are greatly reduces, and the reliability of the system is improved.
Description
Technical field
The present invention relates to a kind of short-circuit fault current limiter.
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.
Short-circuit fault current limiter is the effective way that addresses this 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.Figure 1 shows that the topology diagram of United States Patent (USP) U.S 5,726,848 " fault current limiter and AC circuit breaker ".United States Patent (USP) U.S 5,726,848 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.Fig. 2 is Japan Patent JP2000, the topology diagram of 4534 " current-limiting apparatus ".Japan Patent JP2000,4534 adopt the single-phase rectifier bridge structure of not controlling, at the dc terminal of bridge circuit current-limiting inductance in parallel and positive temperature coefficient (PTC) resistance, to reach the transient state value of fault current limiting and the effect of steady-state value simultaneously.Because positive temperature coefficient resistor improves resistance value by temperature rise, its response speed is slower, and every circuitry phase all needs a current-limiting resistance simultaneously, and cost is higher.Figure 3 shows that topology diagram that Chinese patent CN100452608C " has single bridge type short circuit fault current-limiting apparatus from switch ".This patent adopts dc terminal current-limiting inductance in parallel and the switch of not controlling rectifier bridge single-phase, exchanges the structure of section current-limiting inductance in parallel.Because each of three circuit all needs two current-limiting inductance costs higher mutually.
Summary of the invention
In order to overcome the deficiency of prior art, the invention provides a kind of short-circuit fault current limiter with single current-limiting resistance.The present invention adopts three-phase circuit to share the structure of a current-limiting resistance, and three-phase can independently control, and the short circuit current limitation control of every circuitry phase does not produce any influence to other circuits that are not short-circuited.Cost of the present invention is lower, and control method is flexible, can be widely used in the failure current limit of various three phase networks.
Structure of the present invention is as follows: first diode, second diode, the 3rd diode and the 4th diode are formed first diode rectifier bridge; The negative electrode of first diode and second diode connects together, constitute the first direct current tie point, the anode of the 3rd diode and the 4th diode connects together, constitute the second direct current tie point, the anode of the negative electrode of the 3rd diode and second diode links together, constitute first and exchange tie point, the anode of the negative electrode of the 4th diode and first diode links together, and constitutes second and exchanges tie point; The 5th diode, the 6th diode, the 7th diode and the 8th diode are formed second diode rectifier bridge; The negative electrode of the 5th diode and the 6th diode connects together, constitute the 3rd direct current tie point, the anode of the 7th diode and the 8th diode connects together, constitute the 4th direct current tie point, the anode of the negative electrode of the 7th diode and the 6th diode links together, constitute the 3rd and exchange tie point, the anode of the negative electrode of the 8th diode and the 5th diode links together, and constitutes the 4th and exchanges tie point; The 9th diode, the tenth diode, the 11 diode and the 12 diode are formed the 3rd diode rectifier bridge; The negative electrode of the 9th diode and the tenth diode connects together, constitute the 5th direct current tie point, the anode of the 11 diode and the 12 diode connects together, constitute the 6th direct current tie point, the anode of the negative electrode of the 11 diode and the tenth diode links together, and constitutes the 5th and exchanges tie point; The negative electrode of the 12 diode and the anode of enneode link together, and constitute the 6th and exchange tie point; The first direct current tie point links to each other with the 4th direct current tie point, and the 3rd direct current tie point links to each other with the 6th direct current tie point; The second direct current tie point links to each other with the two ends of current-limiting resistance respectively with the 5th direct current tie point; First exchanges tie point, second exchanges tie point and is connected respectively with the two ends on the inferior limit of first transformer, the two ends on the former limit of first transformer respectively with first mutually an end of power supply and first phase load link to each other; The 3rd exchanges tie point, the 4th exchanges tie point and is connected respectively with the two ends on the inferior limit of second transformer, the two ends on the former limit of second transformer respectively with second mutually an end of power supply and second phase load link to each other; The 5th interchange tie point, the 6th exchanges tie point and is connected respectively with the two ends on the inferior limit of the 3rd transformer, and the two ends on the former limit of the 3rd transformer link to each other with an end of third phase power supply and third phase load respectively; Connect with first switch after first direct current reactor and the 13 diode parallel connection; One end of first direct current reactor and the negative electrode of the 13 diode link to each other with the first direct current tie point; The other end of first direct current reactor links to each other with the anode of first switch with the anode of the 13 diode, and the negative electrode of first switch links to each other with the second direct current tie point; Connect with second switch after second direct current reactor and the 14 diode parallel connection; One end of second direct current reactor and the negative electrode of the 14 diode link to each other with the 3rd direct current tie point; The other end of second direct current reactor links to each other with the anode of second switch with the anode of the 14 diode, and the negative electrode of second switch links to each other with the 4th direct current tie point; Connect with the 3rd switch after the 3rd direct current reactor and the 15 diode parallel connection; One end of the 3rd direct current reactor and the negative electrode of the 15 diode link to each other with the 5th direct current tie point; The other end of the 3rd direct current reactor links to each other with the anode of the 3rd switch with the anode of the 15 diode, and the negative electrode of the 3rd switch links to each other with the 6th direct current tie point.
When the leakage inductance of transformer and line impedance can satisfy fault current limiting climbing needs, also can adopt following simplified structure: first diode, second diode, the 3rd diode and the 4th diode were formed first diode rectifier bridge; The negative electrode of first diode and second diode connects together, constitute the first direct current tie point, the anode of the 3rd diode and the 4th diode connects together, constitute the second direct current tie point, the resistance utmost point of the negative electrode of the 3rd diode and second diode links together, constitute first and exchange tie point, the anode of the negative electrode of the 4th diode and first diode links together, and constitutes second and exchanges tie point; The 5th diode, the 6th diode, the 7th diode and the 8th diode are formed second diode rectifier bridge; The negative electrode of the 5th diode and the 6th diode connects together, constitute the 3rd direct current tie point, the anode of the 7th diode and the 8th diode connects together, and constitutes the 4th direct current tie point, the anode of the negative electrode of the 7th diode and the 6th diode links together, and constitutes the 3rd and exchanges tie point; The anode of the negative electrode of the 8th diode and the 5th diode links together, and constitutes the 4th and exchanges tie point. and the 9th diode, the tenth diode, the 11 diode and the 12 diode are formed the 3rd diode rectifier bridge; The negative electrode of the 9th diode and the tenth diode connects together, constitute the 5th direct current tie point, the anode of the 11 diode and the 12 diode connects together, constitute the 6th direct current tie point, the anode of the negative electrode of the 11 diode and the tenth diode links together, constitute the 5th and exchange tie point, the negative electrode of the 12 diode and the anode of enneode link together, and constitute the 6th and exchange tie point; The first direct current tie point links to each other with the 4th direct current tie point, and the 3rd direct current tie point links to each other with the 6th direct current tie point; The second direct current tie point links to each other with the two ends of current-limiting resistance respectively with the 5th direct current tie point; First exchanges tie point, second exchanges tie point and is connected respectively with the two ends on the inferior limit of first transformer, the two ends on the former limit of first transformer respectively with first mutually an end of power supply and first phase load link to each other; The 3rd exchanges tie point, the 4th exchanges tie point and is connected respectively with the two ends on the inferior limit of second transformer, the two ends on the former limit of second transformer respectively with second mutually an end of power supply and second phase load link to each other; The 5th interchange tie point, the 6th exchanges tie point and is connected respectively with the two ends on the inferior limit of the 3rd transformer, and the two ends on the former limit of the 3rd transformer link to each other with an end of third phase power supply and third phase load respectively; The anode of first switch links to each other with the first direct current tie point, and the negative electrode of first switch links to each other with the second direct current tie point; The anode of second switch links to each other with the 3rd direct current tie point, and the negative electrode of second switch links to each other with the 4th direct current tie point; The anode of the 3rd switch links to each other with the 5th direct current tie point, and the negative electrode of the 3rd switch links to each other with the 6th direct current tie point.
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 Japan Patent JP2000, the topology diagram of 4534 " current-limiting apparatus ".
Topology diagram that Fig. 3 Chinese patent CN100452608C " has single bridge type short circuit fault current-limiting apparatus from switch ".
Fig. 4 is the topological structure of band current-limiting inductance of the present invention.
Fig. 5 for the present invention not with the topological structure of current-limiting inductance.
Embodiment
Figure 4 shows that the topological structure of embodiments of the invention 1. as shown in Figure 4, the first diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4 form first diode rectifier bridge; The negative electrode of the first diode D1 and the second diode D2 connects together, constitute the first direct current tie point PD1, the anode of the 3rd diode D3 and the 4th diode D4 connects together, constitute the second direct current tie point PD2, the anode of the negative electrode of the 3rd diode D3 and the second diode D2 links together, constitute first and exchange tie point PA1, the anode of the negative electrode of the 4th diode D4 and the first diode D1 links together, and constitutes second and exchanges tie point PA2; The 5th diode D5, the 6th diode D6, the 7th diode D7 and the 8th diode D8 form second diode rectifier bridge; The negative electrode of the 5th diode D5 and the 6th diode D6 connects together, constitute the 3rd direct current tie point PD3, the anode of the 7th diode D7 and the 8th diode D8 connects together, constitute the 4th direct current tie point PD4, the anode of the negative electrode of the 7th diode D and the 6th diode D6 links together, constitute the 3rd and exchange tie point PA3, the anode of the negative electrode of the 8th diode D8 and the 5th diode D5 links together, and constitutes the 4th and exchanges tie point PA4; The 9th diode D9, the tenth diode D10, the 11 diode D11 and the 12 diode D12 form the 3rd diode rectifier bridge; The negative electrode of the 9th diode D9 and the tenth diode D10 connects together, constitute the 5th direct current tie point PD5, the anode of the 11 diode D11 and the 12 diode D12 connects together, constitute the 6th direct current tie point PD6, the anode of the negative electrode of the 11 diode D11 and the tenth diode D10 links together, and constitutes the 5th and exchanges tie point PA5; The negative electrode of the 12 diode D12 and the anode of enneode D9 link together, and constitute the 6th and exchange tie point PA6; The first direct current tie point PD1 links to each other with the 4th direct current tie point PD4, and the 3rd direct current tie point PD3 links to each other with the 6th direct current tie point PD6; The second direct current tie point PD2 links to each other with the two ends of current-limiting resistance R1 respectively with the 5th direct current tie point PD5; First exchanges tie point PA1, second exchanges tie point PA2 and is connected respectively with the two ends on the inferior limit of the first transformer TR1, the two ends on the former limit of the first transformer TR1 respectively with first mutually the end of power supply Us1 and the first phase load Z1 link to each other; The 3rd exchanges tie point PA3, the 4th exchanges tie point PA4 and is connected respectively with the two ends on the inferior limit of the second transformer TR2, the two ends on the former limit of the second transformer TR2 respectively with second mutually the end of power supply Us2 and the second phase load Z2 link to each other; The 5th interchange tie point PA5, the 6th exchanges tie point PA6 and is connected respectively with the two ends on the inferior limit of the 3rd transformer TR3, and the two ends on the former limit of the 3rd transformer TR3 link to each other with the end of third phase load Z3 with third phase power supply Us3 respectively; Connect with first switch S 1 after the first direct current reactor L1 and the 13 diode D13 parallel connection; The end of the first direct current reactor L1 and the negative electrode of the 13 diode D13 link to each other with the first direct current tie point PD1; The other end of the first direct current reactor L1 links to each other with the anode of first switch S 1 with the anode of the 13 diode D13, and the negative electrode of first switch S 1 links to each other with the second direct current tie point PD2; Connect with second switch S2 after the second direct current reactor L2 and the 14 diode D14 parallel connection; The end of the second direct current reactor L2 and the negative electrode of the 14 diode D14 link to each other with the 3rd direct current tie point PD3; The other end of the second direct current reactor L2 links to each other with the anode of second switch S2 with the anode of the 14 diode D14, and the negative electrode of second switch S2 links to each other with the 4th direct current tie point PD4; Connect with the 3rd switch S 3 after the 3rd direct current reactor L3 and the 15 diode D15 parallel connection; The end of the 3rd direct current reactor L3 and the negative electrode of the 15 diode D15 link to each other with the 5th direct current tie point PD5; The other end of the 3rd direct current reactor L3 links to each other with the anode of the 3rd switch S 3 with the anode of the 15 diode D15, and the negative electrode of the 3rd switch S 3 links to each other with the 6th direct current tie point PD6.
The embodiment of this embodiment is as follows: when three-phase circuit is not short-circuited fault, and three gate-controlled switch closures, constantly to the current-limiting inductance charging, the current-limiting inductance Approximate Equivalent is a constant-current source to diode rectifier bridge.When line current during less than inductive current, current-limiting inductance does not seal in electrical network, to the not influence of voltage of load end; Near the peak value of power network current, line current is greater than inductive current, and current-limiting inductance seals in electrical network, and is because the relative load impedance of current-limiting inductance is less, very little to the influence of load terminal voltage.When three-phase circuit was short-circuited fault, current-limiting inductance was automatically connected into electrical network, and under the effect of transformer leakage inductance and current-limiting inductance, the rate of climb of short circuit current is inhibited.Meanwhile, flow restricter is when detecting power network current and surpass the threshold value of regulation, and the gate-controlled switch that will link to each other with the overcurrent circuitry phase is opened, and current-limiting inductance is by bypass, and current-limiting resistance seals in this overcurrent circuitry phase, thereby plays the effect that limits this overcurrent phase fault electric current steady-state value.When the fault current that detects the overcurrent phase during less than given threshold value, with the gate-controlled switch closure of overcurrent circuitry phase, current-limiting resistance is not exerted an influence to this circuit by bypass.Under this structure,, therefore, has the utilance height, the advantage that cost is low because current-limiting resistance can be utilized by three-phase circuit simultaneously.
Figure 5 shows that embodiments of the invention 2 topological structures. the embodiment of the invention 2 is when the leakage inductance of transformer and line impedance can satisfy fault current limiting climbing needs, simplify the topological structure of the embodiment of the invention 1 as shown in Figure 4, cancel the first direct current reactor L1, the second direct current reactor L2 and the 3rd direct current reactor L3 and the 13 diode D13, the 14 diode D14 and the 15 diode D15. as shown in Figure 5, the first diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4 form first diode rectifier bridge; The negative electrode of the first diode D1 and the second diode D2 connects together, constitute the first direct current tie point PD1, the anode of the 3rd diode D3 and the 4th diode D4 connects together, constitute the second direct current tie point PD2, the anode of the negative electrode of the 3rd diode D3 and the second diode D2 links together, constitute first and exchange tie point PA1, the anode of the negative electrode of the 4th diode D4 and the first diode D1 links together, and constitutes second and exchanges tie point PA2; The 5th diode D5, the 6th diode D6, the 7th diode D7 and the 8th diode D8 form second diode rectifier bridge; The negative electrode of the 5th diode D5 and the 6th diode D6 connects together, constitute the 3rd direct current tie point PD3, the anode of the 7th diode D7 and the 8th diode D8 connects together, constitute the 4th direct current tie point PD4, the anode of the negative electrode of the 7th diode D7 and the 6th diode D6 links together, and constitutes the 3rd and exchanges tie point PA3; The anode of the negative electrode of the 8th diode D8 and the 5th diode D5 links together, and constitutes the 4th interchange tie point PA4. the 9th diode D9, the tenth diode D10, the 11 diode D11 and the 12 diode D12 and forms the 3rd diode rectifier bridge; The negative electrode of the 9th diode D9 and the tenth diode D10 connects together, constitute the 5th direct current tie point PD5, the anode of the 11 diode D11 and the 12 diode D12 connects together, constitute the 6th direct current tie point PD6, the anode of the negative electrode of the 11 diode D11 and the tenth diode D10 links together, constitute the 5th and exchange tie point PA5, the negative electrode of the 12 diode D12 and the anode of enneode D9 link together, and constitute the 6th and exchange tie point PA6; The first direct current tie point PD1 links to each other with the 4th direct current tie point PD4, and the 3rd direct current tie point PD3 links to each other with the 6th direct current tie point PD6; The second direct current tie point PD2 links to each other with the two ends of current-limiting resistance respectively with the 5th direct current tie point PD5; First exchanges tie point PA1, second exchanges tie point PA2 and is connected respectively with the two ends on the inferior limit of the first transformer TR1, the two ends on the former limit of the first transformer TR1 respectively with first mutually the end of power supply Us1 and the first phase load Z1 link to each other; The 3rd exchanges tie point PA3, the 4th exchanges tie point PA4 and is connected respectively with the two ends on the inferior limit of the second transformer TR2, the two ends on the former limit of the second transformer TR2 respectively with second mutually the end of power supply Us2 and the second phase load Z2 link to each other; The 5th interchange tie point PA5, the 6th exchanges tie point PA6 and is connected respectively with the two ends on the inferior limit of the 3rd transformer TR3, and the two ends on the former limit of the 3rd transformer TR3 link to each other with the end of third phase load Z3 with third phase power supply Us3 respectively; The anode of first switch S 1 links to each other with the first direct current tie point PD1, and the negative electrode of first switch S 1 links to each other with the second direct current tie point PD2; The anode of second switch S2 links to each other with the 3rd direct current tie point PD3, and the negative electrode of second switch S2 links to each other with the 4th direct current tie point PD4; The anode of the 3rd switch S 3 links to each other with the 5th direct current tie point PD5, and the negative electrode of the 3rd switch S 3 links to each other with the 6th direct current tie point PD6.
The embodiment of this embodiment is as follows: when three-phase circuit is not short-circuited fault, and three gate-controlled switch closures, the voltage at diode rectifier bridge two ends only is the tube voltage drop of gate-controlled switch, because its pressure drop is very low, to the almost not influence of voltage of load end.When three-phase circuit was short-circuited fault, under the effect of transformer leakage inductance, the rate of climb of short circuit current was inhibited.Meanwhile, flow restricter is when detecting power network current and surpass the threshold value of regulation, and the gate-controlled switch that will link to each other with the overcurrent circuitry phase is opened, and current-limiting resistance seals in this overcurrent circuitry phase, thereby plays the effect that limits this overcurrent phase fault electric current steady-state value.When the fault current that detects the overcurrent phase during less than given threshold value, with the gate-controlled switch closure of overcurrent circuitry phase, current-limiting resistance is not exerted an influence to this circuit by bypass.Under this structure,, therefore, has the utilance height, the advantage that cost is low because current-limiting resistance can be utilized by three-phase circuit simultaneously.
Claims (2)
1. a short-circuit fault current limiter is characterized in that in the described fault current limiter, and first diode (D1), second diode (D2), the 3rd diode (D3) and the 4th diode (D4) are formed first diode rectifier bridge; The negative electrode of first diode (D1) and second diode (D2) connects together, constitute the first direct current tie point (PD1), the anode of the 3rd diode (D3) and the 4th diode (D4) connects together, constitute the second direct current tie point (PD2), the anode of the negative electrode of the 3rd diode (D3) and second diode (D2) links together, constitute first and exchange tie point (PA1), the anode of the negative electrode of the 4th diode (D4) and first diode (D1) links together, and constitutes second and exchanges tie point (PA2); The 5th diode (D5), the 6th diode (D6), the 7th diode (D7) and the 8th diode (D8) are formed second diode rectifier bridge; The negative electrode of the 5th diode (D5) and the 6th diode (D6) connects together, constitute the 3rd direct current tie point (PD3), the anode of the 7th diode (D7) and the 8th diode (D8) connects together, constitute the 4th direct current tie point (PD4), the anode of the negative electrode of the 7th diode (D7) and the 6th diode (D6) links together, constitute the 3rd and exchange tie point (PA3), the anode of the negative electrode of the 8th diode (D8) and the 5th diode (D5) links together, and constitutes the 4th and exchanges tie point (PA4); The 9th diode (D9), the tenth diode (D10), the 11 diode (D11) and the 12 diode (D12) are formed the 3rd diode rectifier bridge; The negative electrode of the 9th diode (D9) and the tenth diode (D10) connects together, constitute the 5th direct current tie point (PD5), the anode of the 11 diode (D11) and the 12 diode (D12) connects together, constitute the 6th direct current tie point (PD6), the anode of the negative electrode of the 11 diode (D11) and the tenth diode (D10) links together, and constitutes the 5th and exchanges tie point (PA5); The negative electrode of the 12 diode (D12) and the anode of enneode (D9) link together, and constitute the 6th and exchange tie point (PA6); The first direct current tie point (PD1) links to each other with the 4th direct current tie point (PD4), and the 3rd direct current tie point (PD3) links to each other with the 6th direct current tie point (PD6); The second direct current tie point (PD2) links to each other with the two ends of current-limiting resistance (R1) respectively with the 5th direct current tie point (PD5); First exchanges tie point (PA1), second exchanges tie point (PA2) and is connected respectively with the two ends on the inferior limit of first transformer (TR1), the two ends on the former limit of first transformer (TR1) respectively with first mutually an end of power supply (Us1) and first phase load (Z1) link to each other; The 3rd exchanges tie point (PA3), the 4th exchanges tie point (PA4) and is connected respectively with the two ends on the inferior limit of second transformer (TR2), the two ends on the former limit of second transformer (TR2) respectively with second mutually an end of power supply (Us2) and second phase load (Z2) link to each other; The 5th interchange tie point (PA5), the 6th exchanges tie point (PA6) and is connected respectively with the two ends on the inferior limit of the 3rd transformer (TR3), and the two ends on the former limit of the 3rd transformer (TR3) link to each other with the end of third phase power supply (Us3) with third phase load (Z3) respectively; First direct current reactor (L1) and the 13 diode (D13) back in parallel and first switch (S1) series connection; One end of first direct current reactor (L1) links to each other with the first direct current tie point (PD1) with the negative electrode of the 13 diode (D13); The other end of first direct current reactor (L1) links to each other with the anode of first switch (S1) with the anode of the 13 diode (D13), and the negative electrode of first switch (S1) links to each other with the second direct current tie point (PD2); Second direct current reactor (L2) and the 14 diode (D14) back in parallel and second switch (S2) series connection; One end of second direct current reactor (L2) links to each other with the 3rd direct current tie point (PD3) with the negative electrode of the 14 diode (D14); The other end of second direct current reactor (L2) links to each other with the anode of second switch (S2) with the anode of the 14 diode (D14), and the negative electrode of second switch (S2) links to each other with the 4th direct current tie point (PD4); The 3rd direct current reactor (L3) and the 15 diode (D15) back in parallel and the 3rd switch (S3) series connection; One end of the 3rd direct current reactor (L3) links to each other with the 5th direct current tie point (PD5) with the negative electrode of the 15 diode (D15); The other end of the 3rd direct current reactor (L3) links to each other with the anode of the 3rd switch (S3) with the anode of the 15 diode (D15), and the negative electrode of the 3rd switch (S3) links to each other with the 6th direct current tie point (PD6).
2. short-circuit fault current limiter as claimed in claim, it is characterized in that or cancel described first direct current reactor (L1), second direct current reactor (L2) and the 3rd direct current reactor (L3), and the 13 diode (D13), the 14 diode (D14) and the 15 diode (D15); In the device of described fault current limiter, first diode (D1), second diode (D2), the 3rd diode (D3) and the 4th diode (D4) are formed first diode rectifier bridge; The negative electrode of first diode (D1) and second diode (D2) connects together, constitute the first direct current tie point (PD1), the anode of the 3rd diode (D3) and the 4th diode (D4) connects together, constitute the second direct current tie point (PD2), the anode of the negative electrode of the 3rd diode (D3) and second diode (D2) links together, constitute first and exchange tie point (PA1), the anode of the negative electrode of the 4th diode (D4) and first diode (D1) links together, and constitutes second and exchanges tie point (PA2); The 5th diode (D5), the 6th diode (D6), the 7th diode (D7) and the 8th diode (D8) are formed second diode rectifier bridge; The negative electrode of the 5th diode (D5) and the 6th diode (D6) connects together, constitute the 3rd direct current tie point (PD3), the anode of the 7th diode (D7) and the 8th diode (D8) connects together, constitute the 4th direct current tie point (PD4), the anode of the negative electrode of the 7th diode (D7) and the 6th diode (D6) links together, and constitutes the 3rd and exchanges tie point (PA3); The anode of the negative electrode of the 8th diode (D8) and the 5th diode (D5) links together, and constitutes the 4th and exchanges tie point (PA4). and the 9th diode (D9), the tenth diode (D10), the 11 diode (D11) and the 12 diode (D12) are formed the 3rd diode rectifier bridge; The negative electrode of the 9th diode (D9) and the tenth diode (D10) connects together, constitute the 5th direct current tie point (PD5), the anode of the 11 diode (D11) and the 12 diode (D12) connects together, constitute the 6th direct current tie point (PD6), the anode of the negative electrode of the 11 diode (D11) and the tenth diode (D10) links together, constitute the 5th and exchange tie point (PA5), the negative electrode of the 12 diode (D12) and the anode of enneode (D9) link together, and constitute the 6th and exchange tie point (PA6); The first direct current tie point (PD1) links to each other with the 4th direct current tie point (PD4), and the 3rd direct current tie point (PD3) links to each other with the 6th direct current tie point (PD6); The second direct current tie point (PD2) links to each other with the two ends of current-limiting resistance respectively with the 5th direct current tie point (PD5); First exchanges tie point (PA1), second exchanges tie point (PA2) and is connected respectively with the two ends on the inferior limit of first transformer (TR1), the two ends on the former limit of first transformer (TR1) respectively with first mutually an end of power supply (Us1) and first phase load (Z1) link to each other; The 3rd exchanges tie point (PA3), the 4th exchanges tie point (PA4) and is connected respectively with the two ends on the inferior limit of second transformer (TR2), the two ends on the former limit of second transformer (TR2) respectively with second mutually an end of power supply (Us2) and second phase load (Z2) link to each other; The 5th interchange tie point (PA5), the 6th exchanges tie point (PA6) and is connected respectively with the two ends on the inferior limit of the 3rd transformer (TR3), and the two ends on the former limit of the 3rd transformer (TR3) link to each other with the end of third phase power supply (Us3) with third phase load (Z3) respectively; The anode of first switch (S1) links to each other with the first direct current tie point (PD1), and the negative electrode of first switch (S1) links to each other with the second direct current tie point (PD2); The anode of second switch (S2) links to each other with the 3rd direct current tie point (PD3), and the negative electrode of second switch (S2) links to each other with the 4th direct current tie point (PD4); The anode of the 3rd switch (S3) links to each other with the 5th direct current tie point (PD5), and the negative electrode of the 3rd switch (S3) links to each other with the 6th direct current tie point (PD6).
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| CN2009102387978A CN101707365B (en) | 2009-11-25 | 2009-11-25 | Short-circuit fault current limiter |
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| CN2009102387978A CN101707365B (en) | 2009-11-25 | 2009-11-25 | Short-circuit fault current limiter |
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| CN101707365B CN101707365B (en) | 2012-07-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN102255298A (en) * | 2011-07-01 | 2011-11-23 | 中国科学院电工研究所 | Power electronic failure current limiter |
| CN102420422A (en) * | 2011-12-21 | 2012-04-18 | 铜陵浩岩节能科技有限公司 | Intelligent short-circuit current limiter |
| CN114172139A (en) * | 2020-09-11 | 2022-03-11 | Abb瑞士股份有限公司 | Intelligent current limiting for solid state switches |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5726848A (en) * | 1996-05-08 | 1998-03-10 | The Regents Of The University Of California | Fault current limiter and alternating current circuit breaker |
| CN1391324A (en) * | 2002-06-27 | 2003-01-15 | 浙江大学 | Current limiter with by-pass inductor for short-circuit failure |
| CN100334786C (en) * | 2004-04-29 | 2007-08-29 | 浙江大学 | A power electronic type short-circuit fault current limiter |
| CN100495854C (en) * | 2005-04-06 | 2009-06-03 | 中国科学院电工研究所 | Short-circuit fault current limiter |
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2009
- 2009-11-25 CN CN2009102387978A patent/CN101707365B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102255298A (en) * | 2011-07-01 | 2011-11-23 | 中国科学院电工研究所 | Power electronic failure current limiter |
| 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 |
| CN102255298B (en) * | 2011-07-01 | 2014-01-22 | 中国科学院电工研究所 | Power electronic failure current limiter |
| CN102420422A (en) * | 2011-12-21 | 2012-04-18 | 铜陵浩岩节能科技有限公司 | Intelligent short-circuit current limiter |
| CN114172139A (en) * | 2020-09-11 | 2022-03-11 | Abb瑞士股份有限公司 | Intelligent current limiting for solid state switches |
| CN114172139B (en) * | 2020-09-11 | 2024-03-08 | Abb瑞士股份有限公司 | Intelligent current limiting for solid state switches |
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| CN101707365B (en) | 2012-07-18 |
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