CN201138362Y - Failure current test apparatus for high voltage DC transmission converter valve - Google Patents
Failure current test apparatus for high voltage DC transmission converter valve Download PDFInfo
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- CN201138362Y CN201138362Y CN 200720172990 CN200720172990U CN201138362Y CN 201138362 Y CN201138362 Y CN 201138362Y CN 200720172990 CN200720172990 CN 200720172990 CN 200720172990 U CN200720172990 U CN 200720172990U CN 201138362 Y CN201138362 Y CN 201138362Y
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Abstract
The utility model discloses a fault current tester for a high-voltage DC power transmission converter valve, which includes a heating current supply unit, a high-voltage strength supply unit and a fault current supply unit; the three units coordinate sequentially and serially add heating current strength, high-voltage strength and fault current strength which are equivalent to the actual conditions on a sample valve; wherein, the fault current supply unit consists of a single-phase AC power supply (T3), a full-wave rectifier bridge (B4), an energy saving capacitor (Cr), a fault current reactor (Lr) and a fault current auxiliary valve (Vosi). The fault current strength of the utility model is supplied by the energy saving capacitor (Cr), i.e. level 1 buffering is added between a high-strength tester and a power supply system, which does not have impact on the power supply system and requirement for short-wave capacity; no voltage impact is produced on other parallel load in the same system, which is good for stabilizing voltage.
Description
Technical field
The utility model belongs to the measurement technical field of measurement and test, relates in particular to a kind of high voltage direct current converter valve test unit.
Background technology
Along with the progressively popularization that high voltage dc transmission technology is used in electric system, the reliability of its core component---high-power high voltage series thyristor valve becomes the key of security of system.And the fault current test is to be related to high voltage tandem thyristor valve design and manufacture level, improves the important tests means of its reliability.Its fundamental purpose is that the design that the checking valve bears maximum current, voltage and temperature stress effect that short-circuit current causes is correct.Generally adopt synthetic test theory to carry out the fault current test of direct-current transmission converter valve at present in the world, for example the fault current test unit of the direct-current transmission converter valve of ABB AB and Siemens Company production all adopts the method for 6 impulse commutation bridges simulation brachium pontis short circuit to realize the fault current test, its heating current source and fault current source provide with same power supply, adopt this test unit, test is very big to the impact of electric power system, require electric power system to have very high capacity of short circuit simultaneously, the voltage that is unfavorable for electric power system is stable, influences the normal operation of all the other loads in this electric power system easily.
The utility model content
The technical problems to be solved in the utility model provide a kind of to electric power system do not have to impact, simultaneously to the capacity of short circuit no requirement (NR) of power-supply system, be beneficial to the high voltage direct current transmission converter valve fault current test unit of system stability.
For solving the problems of the technologies described above, the utility model high voltage direct current transmission converter valve fault current test unit provides unit, a high-voltage strength to provide unit and a fault current to provide the unit to form by a heating current, these three unit carry out sequential and cooperate, and apply heating current intensity, high-voltage strength and fault current intensity to test product valve successively.Described fault current provides the unit by a single phase alternating current power supply, a full-wave rectification bridge, an energy-storage capacitor, a fault current reactor and a fault current auxiliary valve are formed, this single phase alternating current power supply is exported to full-wave rectification bridge, full-wave rectification bridge is given the charging of energy-storage capacitor complementary energy, is cascaded by fault current auxiliary valve and test product valve after energy-storage capacitor is connected with resonance reactor.
Described heating current provides the unit by a three-phase alternating-current supply, one 6 impulse commutation bridge, a load reactance device, a forward heating auxiliary valve and a reverse heating auxiliary valve are formed, wherein three-phase alternating-current supply is exported to 6 impulse commutation bridges, a brachium pontis of 6 impulse commutation bridges is made up of antiparallel forward heating auxiliary valve and reverse heating auxiliary valve serial connection test product valve, and the output of 6 impulse commutation bridges connects the load reactance device.
Described high-voltage strength provides the unit high-voltage strength to provide the unit by a direct voltage source, four auxiliary valves, two capacitors, three reactors are formed, wherein four auxiliary valves be respectively the power supply auxiliary valve, the auxiliary valve that boosts, forward resonance auxiliary valve and reverse resonance auxiliary valve, two capacitors are respectively direct current capacitors and resonant capacitor, and three reactors are respectively protection reactor, reactor and resonance reactor boost; Described direct voltage source positive pole connects the power supply auxiliary valve, power supply auxiliary valve rear end be connected in parallel direct current capacitors and protection reactor, the protection reactor reactor that boosts that is connected in series again behind the auxiliary valve that boosts that is connected in series, resonant capacitor and the resonance reactor of being connected in parallel behind the reactor that boost, resonance reactor be connected in series antiparallel forward resonance auxiliary valve with oppositely be connected test product valve again behind the resonance auxiliary valve; The other end of direct voltage source, direct current capacitors, resonant capacitor and test product valve links together.
The mode that described three unit sequential cooperate is: at first be that conducting by forward heating auxiliary valve is applied to the brachium pontis strength of current of 6 impulse commutation bridge B6 on the test product valve, utilize this test current to heat test product valve, after working temperature rises to testing requirements, conducting by forward resonance auxiliary valve is applied to the high pressure of resonant capacitor on the test product valve, make the test product valve tolerance with the same abominable high-voltage strength of actual condition, after this rapid conducting failure electric current auxiliary valve, make energy-storage capacitor and fault current reactor resonance, conducting by the fault current auxiliary valve is gone into test product valve with this fault high-current leading, makes its tolerance with the identical fault current intensity of actual condition.
The utility model adopts many cover power-supply systems to be respectively converter valve heating current, fault current and high-voltage strength is provided, its fault current intensity provides by energy-storage capacitor, be equivalent between high-intensity test unit and electric power system, add first-level buffer, electric power system is not impacted, electric voltage dropping can be do not caused, power supply quality can be do not influenced; Do not have simultaneously the requirement of capacity of short circuit yet, be easier to the selection and the realization of electric power system; Can not produce the voltge surge influence to other shunt load in the same system, help the stable realization of voltage; Can reduce the experiment power supply capacity greatly, save great amount of investment.
Description of drawings
Fig. 1 is the utility model high voltage direct current transmission converter valve fault current test unit topology diagram;
Fig. 2 adds single ripple time fault current test principle waveform of malleation after being; Heavy line is represented the trial voltage waveform among the figure, and fine line is represented the test current waveform.
Fig. 3 is the many ripples time fault current test principle waveform that adds malleation without male offspring; Heavy line is represented the trial voltage waveform among the figure, and fine line is represented the test current waveform.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the utility model high voltage direct current transmission converter valve fault current test unit topology diagram, and as shown in the figure, T1 is a direct voltage source, and T2 is a three-phase alternating-current supply, and T3 is a single phase alternating current power supply; Vs is that power supply auxiliary valve, V1 are that forward resonance auxiliary valve, V22 are that reverse resonance auxiliary valve, V41 are that forward heating auxiliary valve, V42 are for oppositely heating auxiliary valve, Vosi are the fault current auxiliary valve for the auxiliary valve that boosts, V21; B4 is a full-wave rectification bridge, and being used for provides the Test to Failure electric current for test product valve indirectly to the charging of energy-storage capacitor Cr complementary energy; B6 is 6 impulse commutation bridges, is used to provide the test product valve heating current; Vt is a test product valve; C0 is that direct current capacitors, C are that resonant capacitor, Cr are energy-storage capacitor, and wherein direct current capacitors C0 and resonant capacitor C are used to provide test required high voltage, and energy-storage capacitor Cr is used to provide fault current institute energy requirement; L1 is that resonance reactor, L2 are protection reactor, L for the reactor that boosts, L3
HFor heating reactor, Lr are the fault current reactor, wherein resonance reactor L1, the reactor L2 that boosts, protection reactor L3 are used for cooperating the generation resonance high-voltage with direct current capacitors C0 and resonant capacitor C, heat reactor L
HCooperating with 6 impulse commutation bridge B6 as the DC load reactor provides the test product valve heating current, and fault current reactor Lr cooperates with energy-storage capacitor Cr and produces the Test to Failure electric current.Wherein direct voltage source T1 is by power supply auxiliary valve Vs, auxiliary valve V1 boosts, antiparallel forward resonance auxiliary valve V21 and the oppositely triggering logical sequence cooperation of resonance auxiliary valve V22, at direct current capacitors C0, resonant capacitor C, resonance reactor L1, reactor L2 boosts, the vibration of the different oscillation circuits that protection reactor L3 forms cooperates down, producing high voltage puts on the test product valve Vt, also be direct voltage source T1, power supply auxiliary valve Vs, auxiliary valve V1 boosts, antiparallel forward resonance auxiliary valve V21 and reverse resonance auxiliary valve V22, direct current capacitors C0, resonant capacitor C, resonance reactor L1, reactor L2 boosts, the high-voltage strength that protection reactor L3 has formed test product valve Vt jointly provides the unit; Wherein three-phase alternating-current supply T2 can apply the constant current heating current on test product valve Vt by the cooperation of 6 pulse bridge and antiparallel forward heating auxiliary valve V41 and reverse heating auxiliary valve V42, also is three-phase alternating-current supply T2,6 impulse commutation bridge bridge B6, heating reactor L
H, antiparallel forward heating auxiliary valve V41 and oppositely heat the heating current that auxiliary valve V42 formed test product valve Vt jointly the unit is provided; Wherein single phase alternating current power supply T3 controls to energy-storage capacitor Cr by rectification and charges, energy-storage capacitor Cr and fault current reactor Lr apply the big electric current of fault in test product valve Vt by the triggering work of fault current auxiliary valve Vosi, also be single phase alternating current power supply T3, full-wave rectification bridge B4, the fault current that energy-storage capacitor Cr, fault current reactor Lr and fault current auxiliary valve Vosi have formed test product valve Vt jointly provides the unit.
The utility model high voltage direct current transmission converter valve fault current test unit promptly provides unit, high-voltage strength to provide unit and fault current to provide the unit to form by described heating current, these three unit carry out sequential and cooperate, and apply with the suitable heating current intensity of actual nominal situation, high-voltage strength and fault current intensity to test product valve successively; Wherein high-voltage strength provides the circuit connecting relation of unit to be: direct voltage source T1 meets power supply auxiliary valve Vs, power supply auxiliary valve Vs rear end be connected in parallel direct current capacitors C0 and protection reactor L3, the protection reactor L3 reactor L2 that boosts that is connected in series again behind the auxiliary valve V1 that boosts that is connected in series, resonant capacitor C and the resonance reactor L1 of being connected in parallel behind the reactor L2 boosts, resonance reactor L1 be connected in series antiparallel forward resonance auxiliary valve V21 with oppositely be connected test product valve Vt again, direct voltage source T1 behind the resonance auxiliary valve V22, direct current capacitors C0, the other end of resonant capacitor C and test product valve Vt links together; Heating current provides the circuit connecting relation of unit to be: three-phase alternating-current supply T2 exports to 6 impulse commutation bridge B6, the brachium pontis of 6 impulse commutation bridge B6 is made up of antiparallel forward heating auxiliary valve V41 and reverse heating auxiliary valve V42 serial connection test product valve Vt, and the output of 6 impulse commutation bridge B6 meets heating reactor L
HFault current provides the circuit connecting relation of unit to be: single phase alternating current power supply T3 exports to full-wave rectification bridge B4, full-wave rectification bridge B4 exports to storage capacitor Cr, and the storage capacitor Cr back of connecting with fault current reactor Lr is cascaded by fault current auxiliary valve Vosi and test product valve Vt.
The mode that described three unit sequential cooperate is: at first be that conducting by forward heating auxiliary valve V41 is applied to the brachium pontis strength of current of 6 impulse commutation bridge B6 on the test product valve Vt, make the test product valve tolerance with the suitable test current of actual condition, utilize this test current to heat test product valve, its working temperature is risen, after working temperature rises to testing requirements, conducting by forward resonance auxiliary valve V21 is applied to the high pressure of resonant capacitor C on the test product valve, make tested valve tolerance with the same abominable high-voltage strength of actual condition, after this rapid conducting failure electric current auxiliary valve Vosi, make energy-storage capacitor Cr and fault current reactor Lr resonance, adjust energy-storage capacitor Cr before the test, the resonant parameter of fault current reactor Lr, and thereby the tank voltage of control energy-storage capacitor Cr reaches the purpose of control fault current amplitude and frequency, conducting by fault current auxiliary valve Vosi is gone into test product valve Vt with this fault high-current leading, makes its tolerance with the identical fault current intensity of actual condition.Put on the test product valve Vt at the high back voltage of the conducting by reverse resonance auxiliary valve V22 after the fault current zero passage, add single ripple time fault current test of malleation after finishing resonant capacitor C.Be added on the test product valve Vt time fault current test of many ripples of finishing to add malleation without male offspring behind 3～5 cycles by the continuable fault current intensity of the control of fault current auxiliary valve Vosi with energy-storage capacitor Cr, fault current reactor Lr resonance.The purpose of these two kinds of test methods is respectively the following ability of checking valve:
A) add single ripple time fault current test of malleation after---suppress single ripple time fault current of a maximum amplitude, begin from maximum temperature, and then locking take place oppositely and forward voltage, comprise the superpotential that any removal of load causes; Its principle tests waveform such as Fig. 2.
B) the many ripples time fault current that adds malleation is without male offspring tested---under the condition identical with the Dan Boci test, and before circuit breaker trip, many ripples time fault current that exists, but no longer apply forward voltage; Its principle tests waveform such as Fig. 3.
The utility model high voltage direct current transmission converter valve fault current test unit, triggering by a series of auxiliary valves cooperates, constant current heating source, the big current source of fault and high-voltage power supply are put on tested direct-current transmission converter valve in proper order, make heat and the loss intensity of tested converter valve tolerance with the suitable transient voltage of physical fault operating mode, transient current, transient state, thereby realize test examination to tested valve accident operating condition, and this topological structure is comparatively convenient, simple for the realization of different tests mode, and is very favourable for the security of test unit.The utility model high voltage direct current transmission converter valve fault current test unit is provided the high capacity intensity that tolerates in the actual condition respectively by 3 independent current sources simultaneously, greatly reduces installation cost.
Claims (3)
1, a kind of high voltage direct current transmission converter valve fault current test unit, it is characterized in that comprising: a heating current provides unit, a high-voltage strength to provide unit and a fault current that the unit is provided, these three unit carry out sequential and cooperate, and apply heating current intensity, high-voltage strength and fault current intensity to test product valve successively;
Described fault current provides the unit by a single phase alternating current power supply T3, a full-wave rectification bridge B4, energy-storage capacitor Cr, a fault current reactor Lr and a fault current auxiliary valve Vosi form, this single phase alternating current power supply T3 exports to full-wave rectification bridge B4, full-wave rectification bridge B4 exports to energy-storage capacitor Cr, and the energy-storage capacitor Cr back of connecting with fault current reactor Lr is cascaded by fault current auxiliary valve Vosi and test product valve Vt.
2, high voltage direct current transmission converter valve fault current test unit according to claim 1 is characterized in that: described heating current provides the unit by a three-phase alternating-current supply T2, one 6 impulse commutation bridge B6, a heating reactor L
H, forward heating auxiliary valve V41 and one oppositely heating auxiliary valve V42 form, wherein three-phase alternating-current supply T2 exports to 6 impulse commutation bridge B6, the brachium pontis of 6 impulse commutation bridge B6 is made up of antiparallel forward heating auxiliary valve V41 and reverse heating auxiliary valve V42 serial connection test product valve Vt, and the output of 6 impulse commutation bridge B6 meets heating reactor L
H
3, high voltage direct current transmission converter valve fault current test unit according to claim 1 and 2, it is characterized in that described high-voltage strength provides the unit by a direct voltage source T1, four auxiliary valves, two capacitors, three reactors are formed, wherein four auxiliary valves be respectively power supply auxiliary valve Vs, the auxiliary valve V1 that boosts, forward resonance auxiliary valve V21 and reverse resonance auxiliary valve V22, two capacitors are respectively direct current capacitors C0 and resonant capacitor C, and three reactors are respectively protection reactor L3, reactor L2 and resonance reactor L1 boost;
Described direct voltage source T1 positive pole meets power supply auxiliary valve Vs, power supply auxiliary valve Vs rear end be connected in parallel direct current capacitors C0 and protection reactor L3, the protection reactor L3 reactor L2 that boosts that is connected in series again behind the auxiliary valve V1 that boosts that is connected in series, resonant capacitor C and the resonance reactor L1 of being connected in parallel behind the reactor L2 that boost, resonance reactor L1 be connected in series antiparallel forward resonance auxiliary valve V21 with oppositely be connected test product valve Vt again behind the resonance auxiliary valve V22; The other end of direct voltage source T1, direct current capacitors C0, resonant capacitor C and test product valve Vt links together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720172990 CN201138362Y (en) | 2007-09-06 | 2007-09-06 | Failure current test apparatus for high voltage DC transmission converter valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720172990 CN201138362Y (en) | 2007-09-06 | 2007-09-06 | Failure current test apparatus for high voltage DC transmission converter valve |
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| Publication Number | Publication Date |
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| CN201138362Y true CN201138362Y (en) | 2008-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720172990 Expired - Lifetime CN201138362Y (en) | 2007-09-06 | 2007-09-06 | Failure current test apparatus for high voltage DC transmission converter valve |
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| CN (1) | CN201138362Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011072431A1 (en) * | 2009-12-14 | 2011-06-23 | 中国电力科学研究院 | Multi-injection test method for high voltage thyristor valve |
| CN102129034A (en) * | 2011-02-11 | 2011-07-20 | 中国电力科学研究院 | Fault current operation test method of flexible DC (Direct Current) transmission MMC (Modular Multilevel Converter) valve |
| CN102175942A (en) * | 2011-02-11 | 2011-09-07 | 中国电力科学研究院 | Steady state operation test method for flexible direct-current power transmission modular multilevel converter (MMC) high-voltage sub module |
| CN102692542A (en) * | 2012-05-04 | 2012-09-26 | 中电普瑞电力工程有限公司 | Trigger method of auxiliary valve in a short circuit current test apparatus |
| CN103954893B (en) * | 2014-05-09 | 2018-11-27 | 国家电网公司 | A kind of thyristor shunt detection circuit and detection method for voltage source converter |
| CN110221169A (en) * | 2019-05-21 | 2019-09-10 | 西安许继电力电子技术有限公司 | A kind of DC grid short circuit current experimental rig and method |
| CN114167272A (en) * | 2021-12-03 | 2022-03-11 | 广东电网有限责任公司 | Flexible direct current converter valve steady-state operation test device and method |
-
2007
- 2007-09-06 CN CN 200720172990 patent/CN201138362Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011072431A1 (en) * | 2009-12-14 | 2011-06-23 | 中国电力科学研究院 | Multi-injection test method for high voltage thyristor valve |
| CN102129034A (en) * | 2011-02-11 | 2011-07-20 | 中国电力科学研究院 | Fault current operation test method of flexible DC (Direct Current) transmission MMC (Modular Multilevel Converter) valve |
| CN102175942A (en) * | 2011-02-11 | 2011-09-07 | 中国电力科学研究院 | Steady state operation test method for flexible direct-current power transmission modular multilevel converter (MMC) high-voltage sub module |
| CN102175942B (en) * | 2011-02-11 | 2014-07-02 | 中国电力科学研究院 | Steady state operation test method for flexible direct-current power transmission modular multilevel converter (MMC) high-voltage sub module |
| CN102129034B (en) * | 2011-02-11 | 2014-07-23 | 中国电力科学研究院 | Fault current operation test method of flexible DC (Direct Current) transmission MMC (Modular Multilevel Converter) valve |
| CN102692542A (en) * | 2012-05-04 | 2012-09-26 | 中电普瑞电力工程有限公司 | Trigger method of auxiliary valve in a short circuit current test apparatus |
| CN103954893B (en) * | 2014-05-09 | 2018-11-27 | 国家电网公司 | A kind of thyristor shunt detection circuit and detection method for voltage source converter |
| CN110221169A (en) * | 2019-05-21 | 2019-09-10 | 西安许继电力电子技术有限公司 | A kind of DC grid short circuit current experimental rig and method |
| CN110221169B (en) * | 2019-05-21 | 2022-03-22 | 西安许继电力电子技术有限公司 | Direct-current power grid short-circuit current testing device and method |
| CN114167272A (en) * | 2021-12-03 | 2022-03-11 | 广东电网有限责任公司 | Flexible direct current converter valve steady-state operation test device and method |
| CN114167272B (en) * | 2021-12-03 | 2024-04-12 | 广东电网有限责任公司 | Flexible direct current converter valve steady-state operation test device and method |
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| CX01 | Expiry of patent term |
Granted publication date: 20081022 |
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| CX01 | Expiry of patent term |