CN201388154Y - Power source of single-phase AC/DC coupling and decoupling networks - Google Patents

Power source of single-phase AC/DC coupling and decoupling networks Download PDF

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Publication number
CN201388154Y
CN201388154Y CN200920084758U CN200920084758U CN201388154Y CN 201388154 Y CN201388154 Y CN 201388154Y CN 200920084758 U CN200920084758 U CN 200920084758U CN 200920084758 U CN200920084758 U CN 200920084758U CN 201388154 Y CN201388154 Y CN 201388154Y
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China
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coupling
voltage
decoupling network
output circuit
network
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Expired - Fee Related
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CN200920084758U
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Chinese (zh)
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王建国
周蜜
薛健
向念文
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Wuhan University WHU
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Wuhan University WHU
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Abstract

The utility model relates to the technical field of electricity tests, in particular to a power source of single-phase AC/DC coupling and decoupling networks, which comprises an AC output circuit, a DC output circuit, a coupling network, a decoupling network, a measuring circuit, a tested equipment port, a surge input port and a selector switch, wherein the selector switch is used for switching between the AC output circuit and the DC output circuit to be respectively connected with the decoupling network; the decoupling network is connected with the tested equipment port, and the surge input port is connected with the tested equipment port through the coupling network; and the measuring circuit measures and displays the voltage and the electric current which are applied to test elements. The power source of the single-phase AC/DC coupling and decoupling networks is used for the surge anti-interference degree test of AC and DC equipments and the situations which need coupling and decoupling networks in the limiting voltage test or the action load test of AC and DC surge protectors.

Description

Blow-up direct-current coupling decoupling network power supply
Technical field
The utility model relates to the electrical testing technical field, relates in particular to a kind of blow-up direct-current coupling decoupling network power supply.
Background technology
The lightning surge immunity experiment is used for simulating electric and the unipolarity surge immunity of electronic equipment to being caused by switch and thunder and lightning transient over-voltage.In the electromagnetic compatibility field, according to GB/T 17626.5-2008 " EMC test and measuring technique surge (impact) immunity experiment " standard-required, be subjected under examination equipment charged (direct current or the interchange) state, being tried power devices power end input surge, observe its response with the complex wave generator that can produce 1.2/50 μ s open circuit voltage ripple and 8/20 μ s short circuit current wave.When utilizing the complex wave generator that equipment is carried out the surge immunity test, need use the coupling decoupling network, wherein coupling network is sent to the surging signal of complex wave generator and is subjected on the examination equipment, restriction damages complex wave generator body from the electric current that power line flows into the complex wave generator, decoupling network then is used for preventing to be applied to the surge that is subjected on the examination equipment and feeds back to electrical network, influences other untested device or equipment.In the lightning protection technical field; according to GB 18802.1-2002 " low tension surge protector part 1: the surge protector of low-voltage distribution system (SPD) performance requirement and test method " and YD/T 1235.2-2002 standard-requireds such as " communication bureau's (station) low-voltage distribution system surge protector specification requirements "; when surge protector is applied maximum working voltage; when carrying out deboost test and operating duty test, also need to use the coupling decoupling network.Be used for the minimum 52V of the maximum working voltage of surge protector of low-voltage distribution system, be up to 800V, therefore the power supply of requirement band coupling decoupling network can provide the voltage of 52V～800V.At present the coupling decoupling network can only provide single power supply voltage mostly, and the application scenario is limited, coupling and the decoupling circuit element function is not optimized and performance is affected.
Summary of the invention
The purpose of this utility model provides a kind of blow-up direct-current coupling decoupling network power supply, can output dc voltage, and alternating voltage that also can Adjustable Output Voltage.
For achieving the above object, the utility model adopts following technical scheme:
Blow-up direct-current coupling decoupling network power supply comprises interchange output circuit, dc output circuit, coupling network, decoupling network, measuring circuit, is tried device port, surge input port, diverter switch, described diverter switch is used for switching interchange output circuit and dc output circuit, and is connected with decoupling network respectively; Decoupling network with tried device port and linked to each other, the surge input port by coupling network with tried device port and linked to each other; The measuring circuit measurement also shows the voltage and current that is applied on the test specimen.
Between two switches of described diverter switch is interlocked relationship, can not be closed simultaneously.
Described interchange output circuit is made up of electric voltage regulator and step-up transformer, and the 220V alternating voltage of input is through electric voltage regulator and step-up transformer output 0～800V alternating voltage.
Described dc output circuit with the input the 220V alternating voltage through DC voltage-stabilizing module output-48V direct voltage.
Described coupling network is made up of capacity cell and resistive element, forms capacitance coupling circuit and resaistance-capacity coupling circuit respectively.
Described decoupling network is made up of inductance element, capacity cell and resistive element, forms second-order low-pass filter.
The utlity model has following advantage and good effect:
1) the utility model satisfies GB/T 17626.5-2008 " EMC test and measuring technique surge (impact) immunity experiment "; GB18802.1-2002 " low tension surge protector part 1: the surge protector of low-voltage distribution system (SPD) performance requirement and test method " and YD/T 1235.2-2002 standard-requireds such as " communication bureau's (station) low-voltage distribution system surge protector specification requirements "; both can be used for the surge immunity test of alternating current-direct current equipment, the occasion of the decoupling network that need be coupled when can be used for that also the alterating and direct current surge protector carried out deboost test or operating duty test.
2) the utility model test applied range, occupation mode is flexible;
3) the utility model has adopted electronic pressure regulation, can export alternating voltage between 0～800V;
4) the utility model can show voltage and the load current that is subjected to examination equipment or test product in real time, is convenient to the tester and observes and control.
Description of drawings
Fig. 1 is the utility model theory diagram;
Fig. 2 is the utility model circuit diagram.
Wherein:
1-exchanges output circuit; The 2-dc output circuit; The 3-coupling network; The 4-decoupling network; The 5-measuring circuit; 6-is tried device port; 7-surge input port.
Embodiment
The utility model is described in further detail in conjunction with the accompanying drawings with specific embodiment below:
Referring to Fig. 1, blow-up direct-current coupling decoupling network power supply comprises interchange output circuit 1, dc output circuit 2, coupling network 3, decoupling network 4, measuring circuit 5, is tried device port 6 and surge input port 7, wherein exchanging output circuit 1 can link to each other with decoupling network 4 respectively by the switch switching with dc output circuit 2, decoupling network 4 again with tried device port 6 and linked to each other, surge input port 7 by coupling network 3 with tried device port 6 and linked to each other, measuring circuit 5 is measured and is also shown voltage, the electric current that is applied on the test specimen.
Fig. 2 is the utility model circuit diagram.Pass through K switch 1The interchange output circuit 1 that closure is devoted oneself to work, single-phase electric voltage regulator input 220V, output 0～250V, step-up transformer input 220V, output 1500V, electric voltage regulator control step-up transformer output 0～1500V alternating voltage.Pass through K switch 2The dc output circuit 2 that closure is devoted oneself to work with the input the 220V alternating voltage through DC voltage-stabilizing module output-48V direct voltage.K switch 1And K 2Have interlocked relationship, both can not be closed simultaneously.
Coupling network 3 is to constitute capacitive coupling and resaistance-capacity coupling circuit by capacity cell and resistive element, and two kinds of coupled mode are arranged, and switches by switch, and L line and the coupling of N line adopt capacitor C n ' (18 μ F), and this moment, contact a linked to each other with b, and d links to each other with e; L line or N line adopt capacitor C n (9 μ F) and resistance R n (10 Ω) when being coupled with ground (PE), this moment, contact a linked to each other with c, and d links to each other with f, and g linked to each other with h when wherein the L line was coupled with ground, and g linked to each other with i when the N line was coupled with ground.
Decoupling network 4 is the inductance L by 1.5mH 1, L 2, capacitor C 1, C 2, C 3And respectively with C 1, C 2, C 3Parallel resistor R 1, R 2, R 3The second-order low-pass filter that constitutes.Resistance R 1, R 2, R 3Play the test back and discharge capacitor C 1, C 2, C 3The effect of last residual charge.Decoupling network 4 parameters choose the regulation that satisfies GB/T 17626.5-2008 " EMC test and measuring technique surge (impact) immunity experiment " standard: when is not connected by examination equipment, should not surpass 15% of the maximum voltage that applies in the remaining surge voltage that does not add on the surge circuit with decoupling network; When be not connected with coupling/decoupling network by examination equipment, supply network, the remaining surge voltage on the decoupling network power input should not surpass the twice of 15% or supply voltage peak value of the voltage that applies, and gets big person among both.
Measuring circuit 5 is delivered to the AC digital voltmeter V that range is 19.999V with the output voltage of step-up transformer by 100: 1 voltage dividers 1Measure and demonstration, and V is set 1Decimal point is presented at ten.Exchange 30A by being input as, be output as the electric weight isolation sensor CT of direct current 5V 1Measure ac output current, CT 1Output voltage deliver to the dc digital voltmeter A of range by 5: 3 voltage dividers again for ± 19.999V 1Measure and demonstration, and A is set 1Decimal point is presented at hundred.The output voltage of dc output circuit 2 adopts range to be ± the dc digital voltmeter V of 199.99V 2Measure and demonstration, output current is output as the electric weight isolation sensor CT of direct current 5V by being input as direct current 100A 2Measure CT 2Output voltage deliver to the dc digital voltmeter A of range by 5: 1 voltage dividers again for ± 1.9999V 2Measure and demonstration, and A is set 2Decimal point is presented at hundred.
L, N, the PE that is tried device port 6 of the present utility model links to each other with the L that is subjected to examination equipment or test specimen, N, PE respectively; surge input port 7 receives the surge input signal; alternating current-direct current equipment is carried out the surge immunity test, or the alterating and direct current surge protector is carried out deboost test, operating duty test.

Claims (6)

1. a blow-up direct-current coupling decoupling network power supply is characterized in that: comprise interchange output circuit (1), dc output circuit (2), coupling network (3), decoupling network (4), measuring circuit (5), tried device port (6), surge input port (7), diverter switch (K 1, K 2), described diverter switch (K 1, K 2) be used to switch described interchange output circuit (1) and described dc output circuit (2), and be connected with decoupling network (4) respectively; Decoupling network (4) with tried device port (6) and linked to each other, surge input port (7) by coupling network (3) with tried device port (6) and linked to each other; Measuring circuit (5) measurement also shows the voltage and current that is applied on the test specimen.
2. blow-up direct-current coupling decoupling network power supply according to claim 1 is characterized in that: described diverter switch (K 1, K 2) two switches between be interlocked relationship, can not be simultaneously closed.
3. blow-up direct-current coupling decoupling network power supply according to claim 1 and 2, it is characterized in that: described interchange output circuit (1) is made up of electric voltage regulator and step-up transformer, and the 220V alternating voltage of input is through electric voltage regulator and step-up transformer output 0～800V alternating voltage.
4. blow-up direct-current coupling decoupling network power supply according to claim 1 and 2 is characterized in that: described dc output circuit (2) with the input the 220V alternating voltage through DC voltage-stabilizing module output-48V direct voltage.
5. blow-up direct-current coupling decoupling network power supply according to claim 1 and 2, it is characterized in that: described coupling network (3) is made up of capacity cell and resistive element, forms capacitance coupling circuit and resaistance-capacity coupling circuit respectively.
6. blow-up direct-current coupling decoupling network power supply according to claim 1 and 2, it is characterized in that: described decoupling network (4) is made up of inductance element, capacity cell and resistive element, forms second-order low-pass filter.
CN200920084758U 2009-04-08 2009-04-08 Power source of single-phase AC/DC coupling and decoupling networks Expired - Fee Related CN201388154Y (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104502861A (en) * 2014-12-15 2015-04-08 北京航空航天大学 Gaussian even pulse high-current high-power broadband power wire injection coupling network and construction method thereof
CN105301381A (en) * 2014-07-31 2016-02-03 展讯通信（上海）有限公司 Automatic surge testing system and testing method
CN105703612A (en) * 2011-12-21 2016-06-22 九尊城网络科技（深圳）有限公司 Power supply circuit
CN105703367A (en) * 2011-12-21 2016-06-22 九尊城网络科技（深圳）有限公司 Power supply circuit
CN105743332A (en) * 2011-12-21 2016-07-06 九尊城网络科技（深圳）有限公司 Power source circuit
CN109900987A (en) * 2019-03-13 2019-06-18 上海市计量测试技术研究院 A kind of multi-functional decoupling network
CN111025075A (en) * 2020-01-14 2020-04-17 浙江吉利汽车研究院有限公司 Electromagnetic disturbance test system
CN111970217A (en) * 2020-08-25 2020-11-20 北京科环世纪电磁兼容技术有限责任公司 Coupling and decoupling network equipment and system
CN114062783A (en) * 2021-09-15 2022-02-18 中国航空工业集团公司西安飞机设计研究所 Power supply compatibility test impedance network

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105703367A (en) * 2011-12-21 2016-06-22 九尊城网络科技（深圳）有限公司 Power supply circuit
CN105743332A (en) * 2011-12-21 2016-07-06 九尊城网络科技（深圳）有限公司 Power source circuit
CN105703612A (en) * 2011-12-21 2016-06-22 九尊城网络科技（深圳）有限公司 Power supply circuit
CN105301381B (en) * 2014-07-31 2019-03-26 展讯通信（上海）有限公司 Automatic surge test system and test method
CN105301381A (en) * 2014-07-31 2016-02-03 展讯通信（上海）有限公司 Automatic surge testing system and testing method
CN104502861B (en) * 2014-12-15 2017-08-08 北京航空航天大学 A kind of Gauss even pulse high current high-power wideband power line injection coupling network and construction method
CN104502861A (en) * 2014-12-15 2015-04-08 北京航空航天大学 Gaussian even pulse high-current high-power broadband power wire injection coupling network and construction method thereof
CN109900987A (en) * 2019-03-13 2019-06-18 上海市计量测试技术研究院 A kind of multi-functional decoupling network
CN109900987B (en) * 2019-03-13 2021-08-17 上海市计量测试技术研究院 Multifunctional decoupling network
CN111025075A (en) * 2020-01-14 2020-04-17 浙江吉利汽车研究院有限公司 Electromagnetic disturbance test system
CN111970217A (en) * 2020-08-25 2020-11-20 北京科环世纪电磁兼容技术有限责任公司 Coupling and decoupling network equipment and system
CN114062783A (en) * 2021-09-15 2022-02-18 中国航空工业集团公司西安飞机设计研究所 Power supply compatibility test impedance network
CN114062783B (en) * 2021-09-15 2024-02-23 中国航空工业集团公司西安飞机设计研究所 Power supply compatibility test impedance network

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100120

Termination date: 20130408