CN203630241U - All-in-one device for testing power frequency parameters and switching test line for high-voltage power transmission line - Google Patents
All-in-one device for testing power frequency parameters and switching test line for high-voltage power transmission line Download PDFInfo
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- CN203630241U CN203630241U CN201320777607.1U CN201320777607U CN203630241U CN 203630241 U CN203630241 U CN 203630241U CN 201320777607 U CN201320777607 U CN 201320777607U CN 203630241 U CN203630241 U CN 203630241U
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Abstract
The utility model discloses an all-in-one device for testing power frequency parameters and switching a test line for a high-voltage power transmission line. The device comprises a contactor KM1, a contactor KM2, a contactor KM3, a pilot frequency power supply, a potential transformer PT1, a potential transformer PT2, a potential transformer PT3, a current transformer CT1, a current transformer CT2, and a current transformer CT3. One end of an induction coil of the potential transformer PT1, one end of an induction coil of the potential transformer PT2 and one end of an induction coil of the potential transformer PT3 are respectively connected to the A, B and C phases of a three-phase power supply. The other end of the induction coil of the potential transformer PT1, the other end of the induction coil of the potential transformer PT2 and the other end of the induction coil of the potential transformer PT3 are respectively grounded. The current transformer CT1, the current transformer CT2 and the current transformer CT3 are respectively disposed on the A, B and C phases of the three-phase power supply. The output end of the potential transformer PT1, the output end of the potential transformer PT2, the output end of the potential transformer PT3, the output end of the current transformer CT1, the output end of the current transformer CT2 and the output end of the current transformer CT3 are respectively connected with the input end of a collection circuit. The output end of the collection circuit is connected with an upper computer. The device achieves the purposes of guaranteeing safety and automatic switching of a line.
Description
Technical field
The utility model relates to high-tension measurement apparatus field, particularly, relates to a kind of ultra-high-tension power transmission line power frequency parameter test and switches integrated apparatus with test wiring.
Background technology
At present; along with the high speed development of electrical network, newly-built ultra-high-tension power transmission line is more and more, and new line is before putting into operation; need to measure various power frequency parameter values, using the foundation as computing system short-circuit current, relay protection setting, the distribution of reckoning trend and the selection method of operation etc.The test event that transmission line power frequency parameter test relates to mainly comprises direct current resistance m easurem ent, positive sequence impedance measurement, positive sequence admittance measurement, zero sequence impedance measurement and zero sequence admittance measurement etc.According to the difference of test event, need to adopt the different modes of connection.At present, in test site, need tester to change by hand wiring, both reduced testing efficiency, can not guarantee again tester's handling safety.
Utility model content
The purpose of this utility model is, for the problems referred to above, proposes a kind of ultra-high-tension power transmission line power frequency parameter test and switches integrated apparatus with test wiring, to realize the advantage that guarantees safety and automatic switchover wiring.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of ultra-high-tension power transmission line power frequency parameter test switches integrated apparatus with test wiring, comprise contactor KM1, contactor KM2, contactor KM3, alien frequencies power supply, voltage transformer pt 1, voltage transformer pt 2, voltage transformer pt 3, Current Transmit 1, Current Transmit 2 summation current transformer CT3, the inlet wire of described contactor KM1 is connected with A, B and the C of the downlead of tested transmission line of electricity, the outlet of contactor KM1 is connected to the inlet wire of contactor KM2, and the outlet of contactor KM2 is connected together; One of them outlet of contactor KM1 is connected to the output terminal a of alien frequencies power supply, and other two outlets of contactor KM1 are connected to the inlet wire of contactor KM3, and the outlet of contactor KM3 is connected to respectively output terminal b and the output terminal c of alien frequencies power supply,
Inductive coil one end of described voltage transformer pt 1, voltage transformer pt 2 and voltage transformer pt 3 is connected on respectively three-phase supply A phase, B phase and C and goes up mutually, its other end ground connection, described Current Transmit 1, Current Transmit 2 summation current transformer CT3 are arranged on three-phase supply A phase, B phase and C and go up mutually, described voltage transformer pt 1, voltage transformer pt 2, voltage transformer pt 3, Current Transmit 1, Current Transmit 2 output terminals of summation current transformer CT3 and the input end of Acquisition Circuit are connected, and the output terminal of this Acquisition Circuit is connected with host computer.
Further, also comprise guidance panel, on this guidance panel, relative set connects the jack of A phase, B phase and the C phase of the downlead of tested transmission line of electricity, and the jack of connection alien frequencies power output end a, output terminal b and output terminal c, insulation/direct current resistance m easurem ent button and pilot lamp, positive sequence impedance/admittance measurement button and pilot lamp and zero sequence impedance/admittance measurement button and pilot lamp.
Further, described insulation/direct current resistance m easurem ent button, positive sequence impedance/admittance measurement button and parallel being arranged on guidance panel of zero sequence impedance/admittance measurement button.
The technical solution of the utility model has following beneficial effect:
The technical solution of the utility model, by contactor KM1, contactor KM2 and contactor KM3 are set, by the action of contactor KM1, contactor KM2 and contactor KM3, realize the automatic switchover of test wiring, thereby avoid the safety problem causing because of manual change's wiring, thereby reached the object that guarantees safety and automatic switchover wiring.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the ultra-high-tension power transmission line power frequency parameter test and the electrical circuit diagram of testing wiring switching integrated apparatus described in the utility model embodiment;
Fig. 2 is the ultra-high-tension power transmission line power frequency parameter test and the structural representation of testing wiring switching integrated apparatus guidance panel described in the utility model embodiment;
Fig. 3 is the electronic circuitry of the collection holding circuit described in the utility model embodiment.
By reference to the accompanying drawings, in the utility model embodiment, Reference numeral is as follows:
1-insulation/direct current resistance m easurem ent pilot lamp; 2-positive sequence impedance/admittance measurement pilot lamp; 3-zero sequence impedance/admittance measurement pilot lamp; 4-insulation/direct current resistance m easurem ent button; 5-positive sequence impedance/admittance measurement button; 6-zero sequence impedance/admittance measurement button.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of ultra-high-tension power transmission line power frequency parameter test switches integrated apparatus with test wiring, comprise contactor KM1, contactor KM2, contactor KM3, alien frequencies power supply, voltage transformer pt 1, voltage transformer pt 2, voltage transformer pt 3, Current Transmit 1, Current Transmit 2 summation current transformer CT3, the inlet wire of contactor KM1 is connected with A, B and the C of the downlead of tested transmission line of electricity, the outlet of contactor KM1 is connected to the inlet wire of contactor KM2, and the outlet of contactor KM2 is connected together; One of them outlet of contactor KM1 is connected to the output terminal a of alien frequencies power supply, and other two outlets of contactor KM1 are connected to the inlet wire of contactor KM3, and the outlet of contactor KM3 is connected to respectively output terminal b and the output terminal c of alien frequencies power supply,
Inductive coil one end of voltage transformer pt 1, voltage transformer pt 2 and voltage transformer pt 3 is connected on respectively three-phase supply A phase, B phase and C and goes up mutually, its other end ground connection, Current Transmit 1, Current Transmit 2 summation current transformer CT3 are arranged on three-phase supply A phase, B phase and C and go up mutually, voltage transformer pt 1, voltage transformer pt 2, voltage transformer pt 3, Current Transmit 1, Current Transmit 2 output terminals of summation current transformer CT3 and the input end of Acquisition Circuit are connected, and the output terminal of this Acquisition Circuit is connected with host computer.
Acquisition Circuit comprises collection holding circuit and A/D change-over circuit, as shown in Figure 3, gather holding circuit and have transport and placing device A1, transport and placing device A2, relay, the compositions such as resistance R 2 and capacitor C, the switch series of relay is associated in the in-phase input end of transport and placing device A1 output terminal and transport and placing device A2, resistance in series R2 and capacitor C successively between the in-phase input end of transport and placing device A2 and ground, series diode VD1 between the output terminal of the inverting input of transport and placing device A1 and transport and placing device A1, the anode of diode VD1 is connected with the output terminal of transport and placing device A1, diode VD1 two ends parallel diode VD2, the anode of diode VD2 is connected with the negative electrode of diode VD1.
As shown in Figure 2, wherein setting operation panel on the shell of this device, on this guidance panel, relative set connects the jack of A phase, B phase and the C phase of the downlead of tested transmission line of electricity, and the jack of connection alien frequencies power output end a, output terminal b and output terminal c, insulation/direct current resistance m easurem ent button and pilot lamp, positive sequence impedance/admittance measurement button and pilot lamp and zero sequence impedance/admittance measurement button and pilot lamp.
Insulation/direct current resistance m easurem ent button, be arranged on guidance panel on parallel with zero sequence impedance/admittance measurement button of positive sequence impedance/admittance measurement button, the parallel setting of its corresponding pilot lamp thereunder.Insulation/direct current resistance m easurem ent the button and the pilot lamp that arrange are pressed in the time of insulation resistance and direct current resistance m easurem ent, and in the time pressing this button, the pilot lamp that is arranged at its top is bright, indicate current at measurement insulation resistance and direct current resistance; Positive sequence impedance/admittance measurement the button and the pilot lamp that arrange are pressed in the time of positive sequence impedance measurement and positive sequence admittance measurement, and in the time pressing this button, the pilot lamp that is arranged at its top is bright, indicate current in test positive sequence impedance and positive sequence admittance; Zero sequence impedance/admittance measurement the button and the pilot lamp that arrange are pressed in the time of zero sequence impedance measurement and zero sequence admittance measurement, and in the time pressing this button, the pilot lamp that is arranged at its top is bright, indicate current in test zero sequence impedance and zero sequence admittance.
Voltage transformer pt 1 in parameter testing part, PT2, PT3 is connected on A, B, between C and ground, Current Transmit 1, CT2, CT3 is connected on A, B, C is upper, and the output of the two is connected to electric current and voltage Acquisition Circuit, and Acquisition Circuit is connected with host computer.Collection plate gathers required voltage and electric current, realizes positive sequence impedance, positive sequence admittance, zero sequence impedance, the isoparametric measurement of zero sequence admittance.And together with partly integrated with wiring automatic switchover, the device of being integrally formed.
A on guidance panel, B, C jack connection line downlead, a, b, c jack connects the output of alien frequencies power supply.G jack access earth terminal.Insulation/direct current resistance m easurem ent the button and the pilot lamp that arrange are pressed in the time of insulation resistance and direct current resistance m easurem ent, and in the time pressing this button, the pilot lamp that is arranged at its top is bright, indicates current test event; Positive sequence impedance/admittance measurement the button and the pilot lamp that arrange are pressed in the time of positive sequence impedance measurement and positive sequence admittance measurement, and in the time pressing this button, the pilot lamp that is arranged at its top is bright, indicates current test event; Zero sequence impedance/admittance measurement the button and the pilot lamp that arrange are pressed in the time of zero sequence impedance measurement and zero sequence admittance measurement, and in the time pressing this button, the pilot lamp that is arranged at its top is bright, indicates current test event.
Alternating voltage and current signal that alien frequencies power supply needs for generation of test, and add to measurement circuit.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. a ultra-high-tension power transmission line power frequency parameter test switches integrated apparatus with test wiring, it is characterized in that, comprise contactor KM1, contactor KM2, contactor KM3, alien frequencies power supply, voltage transformer pt 1, voltage transformer pt 2, voltage transformer pt 3, Current Transmit 1, Current Transmit 2 summation current transformer CT3, the inlet wire of described contactor KM1 is connected with A, B and the C of the downlead of tested transmission line of electricity, the outlet of contactor KM1 is connected to the inlet wire of contactor KM2, and the outlet of contactor KM2 is connected together; One of them outlet of contactor KM1 is connected to the output terminal a of alien frequencies power supply, and other two outlets of contactor KM1 are connected to the inlet wire of contactor KM3, and the outlet of contactor KM3 is connected to respectively output terminal b and the output terminal c of alien frequencies power supply,
Inductive coil one end of described voltage transformer pt 1, voltage transformer pt 2 and voltage transformer pt 3 is connected on respectively three-phase supply A phase, B phase and C and goes up mutually, its other end ground connection, described Current Transmit 1, Current Transmit 2 summation current transformer CT3 are arranged on three-phase supply A phase, B phase and C and go up mutually, described voltage transformer pt 1, voltage transformer pt 2, voltage transformer pt 3, Current Transmit 1, Current Transmit 2 output terminals of summation current transformer CT3 and the input end of Acquisition Circuit are connected, and the output terminal of this Acquisition Circuit is connected with host computer.
2. ultra-high-tension power transmission line power frequency parameter test according to claim 1 switches integrated apparatus with test wiring, it is characterized in that, also comprise guidance panel, on this guidance panel, relative set connects the jack of A phase, B phase and the C phase of the downlead of tested transmission line of electricity, and the jack of connection alien frequencies power output end a, output terminal b and output terminal c, insulation/direct current resistance m easurem ent button and pilot lamp, positive sequence impedance/admittance measurement button and pilot lamp and zero sequence impedance/admittance measurement button and pilot lamp.
3. ultra-high-tension power transmission line power frequency parameter test according to claim 2 switches integrated apparatus with test wiring, it is characterized in that described insulation/direct current resistance m easurem ent button, positive sequence impedance/admittance measurement button and parallel being arranged on guidance panel of zero sequence impedance/admittance measurement button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320777607.1U CN203630241U (en) | 2013-12-02 | 2013-12-02 | All-in-one device for testing power frequency parameters and switching test line for high-voltage power transmission line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320777607.1U CN203630241U (en) | 2013-12-02 | 2013-12-02 | All-in-one device for testing power frequency parameters and switching test line for high-voltage power transmission line |
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| CN203630241U true CN203630241U (en) | 2014-06-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675535A (en) * | 2013-12-02 | 2014-03-26 | 国家电网公司 | High-tension transmission line power frequency parameter testing and testing connection switching integrated device |
| CN104297605A (en) * | 2014-10-30 | 2015-01-21 | 云南省送变电工程公司 | Ultrahigh-voltage live-working insulation safety instrument test system and method |
| CN105717361A (en) * | 2015-03-27 | 2016-06-29 | 国网山东省电力公司青岛供电公司 | Method for measuring inter-line capacitive reactance and grounding capacitive reactance |
-
2013
- 2013-12-02 CN CN201320777607.1U patent/CN203630241U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675535A (en) * | 2013-12-02 | 2014-03-26 | 国家电网公司 | High-tension transmission line power frequency parameter testing and testing connection switching integrated device |
| CN104297605A (en) * | 2014-10-30 | 2015-01-21 | 云南省送变电工程公司 | Ultrahigh-voltage live-working insulation safety instrument test system and method |
| CN104297605B (en) * | 2014-10-30 | 2017-04-19 | 云南省送变电工程公司 | Ultrahigh-voltage live-working insulation safety instrument test system and method |
| CN105717361A (en) * | 2015-03-27 | 2016-06-29 | 国网山东省电力公司青岛供电公司 | Method for measuring inter-line capacitive reactance and grounding capacitive reactance |
| CN105717361B (en) * | 2015-03-27 | 2018-06-12 | 国网山东省电力公司青岛供电公司 | A kind of method of capacitive reactance and capacitance to earth between measurement line |
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