CN110780221A - Electrical measurement system for source end of circuit breaker on primary and secondary fusion complete set of column - Google Patents
Electrical measurement system for source end of circuit breaker on primary and secondary fusion complete set of column Download PDFInfo
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- CN110780221A CN110780221A CN201911135487.3A CN201911135487A CN110780221A CN 110780221 A CN110780221 A CN 110780221A CN 201911135487 A CN201911135487 A CN 201911135487A CN 110780221 A CN110780221 A CN 110780221A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/06—Measuring real component; Measuring reactive component
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention provides a secondary fusion complete set of column upper circuit breaker source end electrical measurement system, the A port, B port, C port of the measurement system are input ends, the A port of the measurement system is connected with the A phase output end of the test power supply, the B port of the measurement system is connected with the B phase output end of the test power supply, the C port of the measurement system is connected with the C phase output end of the test power supply, the a port, B port, C port of the measurement system are output ends, the A port, B port, C port of the measurement system are connected with the primary side input end of the circuit breaker body on the complete set of column, the secondary side head ends of the current transformer CTa, the current transformer CTb, the current transformer CTc are respectively connected with the input ends of the current meter Aa, the current meter Ab, the current meter Ac, the output ends of the current meter Ab are respectively connected with the current homonymous input ends of the watt meter Wac, the watt meter Wbc, the measurement system provided by, the detection requirement of accuracy measurement is met, and the method has good practicability.
Description
Technical Field
The invention relates to a circuit breaker measuring system, in particular to an electrical measuring system for a source end of a circuit breaker on a primary and secondary fusion complete column.
Background
The degree of accuracy that the degree of accuracy of circuit breaker on the one secondary fusion complete set post was tested needs to measure the current transformer, voltage transformer, zero sequence current transformer, zero sequence voltage sensor and the line loss acquisition unit of circuit breaker on the complete set post, at present, except voltage transformer, this internal circuit breaker is all placed in to other mutual-inductors and sensors, places circuit breaker control terminal on the complete set post in the line loss acquisition unit in, can't carry out the degree of accuracy measurement alone. Therefore, the accuracy measurement needs to be carried out by applying a full-voltage test power supply with adjustable voltage and current on the primary side of the circuit breaker body, and in order to compare the test power supply with the electric parameter errors of various mutual inductors and sensors of the circuit breaker on the complete set of columns, the electric parameter measurement needs to be carried out on the test power supply.
Disclosure of Invention
The invention aims to provide an electrical measurement system for a primary and secondary fusion complete column upper circuit breaker source end, which is used for measuring voltage, current, active power, reactive power, zero-sequence current and zero-sequence voltage of an applied power supply.
The technical scheme of the invention is as follows:
a source end electrical measurement system of a circuit breaker on a primary-secondary fusion complete set of columns is characterized in that an A port, a B port and a C port of the measurement system are input ends, the A port of the measurement system is connected with an A phase output end of a test power supply, the B port of the measurement system is connected with a B phase output end of the test power supply, the C port of the measurement system is connected with a C phase output end of the test power supply, an a port, a B port and a C port of the measurement system are output ends and are connected with a primary side input end of a circuit breaker body on the complete set of columns, secondary side head ends of a current transformer CTa, a current transformer CTb and a current transformer CTc are respectively connected with input ends of an ammeter Aa, an ammeter Ab and an ammeter Ac, output ends of the ammeter Aa and the ammeter Ab are respectively connected with current homonymous input ends of a watt meter Wac and a watt meter Wbc, the output end of the, The secondary side head ends of a voltage transformer PTbc and a voltage transformer PTca are respectively connected with the input ends of a voltmeter Vac, a voltmeter Vbc and a voltmeter Vca, the input ends of the voltmeter Vac and the voltmeter Vbc are connected in parallel with the voltage homonymous input ends of a watt meter Wac and a watt meter Wbc, the output ends of the voltmeter Vac and the voltmeter Vbc are connected in parallel with the voltage output ends of the watt meter Wac and the watt meter Wbc and then respectively connected with the secondary side tail ends of the voltage transformer PTac and the voltage transformer PTbc, the output end of the voltmeter Vca is connected with the secondary side tail end of the voltage transformer PTca, the current output ends of the watt meter Wac and the watt meter Wbc are respectively connected with the secondary side tail ends of a current transformer CTa and a current transformer CTb, the A port of the measuring system, the B port of the measuring system and the B port of the measuring system, and the C port of the measuring system all pass through a zero sequence coil of a current transformer CT0, the head end of the secondary side of the zero sequence current transformer CT0 is connected with the input end of a zero sequence current meter A0, the output end of the zero sequence current meter A0 is connected with the tail end of the secondary side of the zero sequence current transformer CT0, a high-voltage arm capacitor and a low-voltage wall capacitor are connected among the port A of the measurement system, the port B of the measurement system, the port B of the measurement system, the port C of the measurement system and the port C of the measurement system, the low-voltage wall capacitor is connected with a zero sequence voltage transformer PT0, and a zero sequence voltmeter V0 for displaying a zero sequence voltage value is arranged on the zero sequence voltage transformer.
The high-voltage arm capacitor comprises an A-phase high-voltage arm capacitor Ca1 connected to a connection line of an A port of a measurement system and an a port of the measurement system, a B-phase high-voltage arm capacitor Cb1 connected to a connection line of a B port of the measurement system and a B port of the measurement system, and a C-phase high-voltage arm capacitor Cc1 connected to a connection line of a C port of the measurement system and a B port of the measurement system, the low-voltage wall capacitors comprise an A-phase low-voltage arm capacitor Ca2, a B-phase low-voltage arm capacitor Cb2 and a C-phase low-voltage arm capacitor Cc2, the output end of the A-phase high-voltage arm capacitor Ca1 is connected with the input end of the A-phase low-voltage arm capacitor Ca2, the output end of the B-phase high-voltage arm capacitor Cb1 is connected with the input end of the B-phase low-voltage arm capacitor Cb2, the output end of the C-phase high-voltage arm capacitor Cc1 is connected with the input end of a, The output end of the B-phase low-voltage arm capacitor Cb2 is connected with the tail end of the A-phase primary side winding of the zero-sequence voltage transformer PT0, and the output end of the C-phase low-voltage arm capacitor Cc2 is connected with the tail end of the B-phase primary side winding of the zero-sequence voltage transformer PT 0.
The head end of the A-phase secondary side winding of the zero sequence voltage transformer PT0 is connected with the input end of the zero sequence voltage transformer V0, the tail end of the A-phase secondary side winding of the zero sequence voltage transformer PT0 is connected with the head end of the B-phase secondary side winding of the zero sequence voltage transformer PT0, the tail end of the B-phase secondary side winding of the zero sequence voltage transformer PT0 is connected with the head end of the C-phase secondary side winding of the zero sequence voltage transformer PT0, and the tail end of the C-phase secondary side winding of the zero sequence voltage transformer PT0 is connected.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a source end electric measurement system, which is used for measuring a test power supply for measuring the accuracy of a circuit breaker on a secondary fusion complete set column. The measuring system provided by the invention is simple in wiring, realizes the function of simultaneously measuring 10 source end electrical parameters by one-time wiring, meets the detection requirement of accuracy measurement, and has good practicability.
Drawings
FIG. 1 is a schematic diagram of the structure of the measuring system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A source end electrical measurement system of a breaker on a primary-secondary fusion complete set of columns is characterized in that an A port, a B port and a C port of the measurement system are input ends, the A port of the measurement system is connected with an A phase output end of a test power supply 1, the B port of the measurement system is connected with a B phase output end of the test power supply 1, the C port of the measurement system is connected with a C phase output end of the test power supply 1, the a port, the B port and the C port of the measurement system are output ends and are connected with a primary side input end of a circuit breaker body 2 on the complete set of columns, three-phase large currents of the test power supply are converted into small currents for measuring the currents and isolating the test power supply, secondary side head ends of a current transformer CTa, a current transformer CTb and a current transformer CTc are respectively connected with input ends of an ammeter Aa, an ammeter Ab and an ammeter Ac for respectively displaying A, B, C three-phase current, The output ends of the voltmeter Vac and the voltmeter Vbc are connected in parallel behind the voltage output ends of the wattmeter Wac and the wattmeter Wbc and are respectively connected with the secondary side tail ends of the voltage transformer PTac and the voltage transformer PTbc, the output end of the ammeter Ac is connected with the secondary side tail end of the current transformer CTc, the secondary side head ends of the voltage transformer PTac, the voltmeter PTbc and the voltmeter PTca which convert the three-phase line voltage of the test power supply into low voltage for measuring the voltage and isolating the test power supply are respectively connected with the input ends of the voltmeter Vac, the voltmeter Vbc and the voltmeter Vca which are used for displaying the power values between AC phases and BC phases, the voltage dotted input ends of the voltmeter Vac and the voltmeter Vbc are respectively connected with the secondary side tail ends of the voltmeter PTac and the voltage transformer PTbc, the output end of the voltmeter Vca is connected with the secondary side tail end of the voltage transformer PTca, the current output ends of a watt meter Wac and a watt meter Wbc are respectively connected with the secondary side tail ends of a current transformer CTa and a current transformer CTb, connecting wires between an A port of a measuring system and an a port of the measuring system, a B port of the measuring system and a B port of the measuring system, and connecting wires between a C port of the measuring system and a C port of the measuring system all penetrate through a primary side coil of a zero sequence current transformer CT0 for inducing three-phase zero sequence current, the secondary side head end of the zero sequence current transformer CT0 is connected with the input end of a zero sequence current meter A0 for displaying the value of the zero sequence current, the output end of the zero sequence current meter A0 is connected with the secondary side tail end of the zero sequence current transformer CT0, the A port of the measuring system and the a port of the measuring system, the B port of the measuring system and the B port of the measuring system, and the C port of the measuring system are also connected, and the three-phase line voltage of the test power supply is converted The capacitor and the low-voltage wall capacitor are connected with a zero sequence voltage transformer PT0, and a zero sequence voltmeter V0 for displaying a zero sequence voltage value is arranged on the zero sequence voltage transformer PT 0.
The high-voltage arm capacitor comprises an A-phase high-voltage arm capacitor Ca1 connected to a connection line of an A port of a measurement system and an a port of the measurement system, a B-phase high-voltage arm capacitor Cb1 connected to a connection line of a B port of the measurement system and a B port of the measurement system, and a C-phase high-voltage arm capacitor Cc1 connected to a connection line of a C port of the measurement system and a B port of the measurement system, the low-voltage wall capacitors comprise an A-phase low-voltage arm capacitor Ca2, a B-phase low-voltage arm capacitor Cb2 and a C-phase low-voltage arm capacitor Cc2, the output end of the A-phase high-voltage arm capacitor Ca1 is connected with the input end of the A-phase low-voltage arm capacitor Ca2, the output end of the B-phase high-voltage arm capacitor Cb1 is connected with the input end of the B-phase low-voltage arm capacitor Cb2, the output end of the C-phase high-voltage arm capacitor Cc1 is connected with the input end of a, The output end of the B-phase low-voltage arm capacitor Cb2 is connected with the tail end of the A-phase primary side winding of the zero-sequence voltage transformer PT0, and the output end of the C-phase low-voltage arm capacitor Cc2 is connected with the tail end of the B-phase primary side winding of the zero-sequence voltage transformer PT 0.
The zero sequence voltage transformer PT0 is used for zero sequence voltage of an induction test power supply, the head end of an A-phase secondary side winding of the zero sequence voltage transformer PT0 is connected with the input end of a zero sequence voltage transformer V0, the tail end of an A-phase secondary side winding of the zero sequence voltage transformer PT0 is connected with the head end of a B-phase secondary side winding of the zero sequence voltage transformer PT0, the tail end of a B-phase secondary side winding of the zero sequence voltage transformer PT0 is connected with the head end of a C-phase secondary side winding of the zero sequence voltage transformer PT0, and the tail end of a C-phase secondary side winding of the zero sequence.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a circuit breaker source end electrical measurement system on secondary fusion set post which characterized in that: the A port, the B port and the C port of the measuring system are input ends, the A port of the measuring system is connected with the A-phase output end of the test power supply (1), the B port of the measuring system is connected with the B-phase output end of the test power supply (1), the C port of the measuring system is connected with the C-phase output end of the test power supply (1), the a port, the B port and the C port of the measuring system are output ends and are connected with the primary side input end of the on-column circuit breaker body (2), the secondary side head ends of the current transformer CTa, the current transformer CTb and the current transformer CTc are respectively connected with the input ends of an ammeter Aa, an ammeter Ab and an ammeter Ac, the output ends of the ammeter Aa and the ammeter Ab are respectively connected with the current homonymous input ends of a watt meter Wac and a watt meter Wbc, the output end of the ammeter Ac is connected with the secondary side tail end of the current transformer CT, The head end of the secondary side of the voltage transformer PTca is respectively connected with the input ends of a voltmeter Vac, a voltmeter Vbc and a voltmeter Vca, the input ends of the voltmeter Vac and the voltmeter Vbc are connected in parallel with the voltage homonymous input ends of the watt meter Wac and the watt meter Wbc, the output ends of the voltmeter Vac and the voltmeter Vbc are connected in parallel with the voltage output ends of the watt meter Wac and the watt meter Wbc and then are respectively connected with the tail ends of the secondary sides of the voltage transformer PTac and the voltage transformer PTbc, the output end of the voltmeter Vca is connected with the tail end of the secondary side of the voltage transformer PTca, the current output ends of the watt meter Wac and the watt meter Wbc are respectively connected with the tail ends of the primary sides of the current transformer CTa and the current transformer CTb, the A port of the measuring system, the B port of the measuring system, the B port of the measuring system, and the C port of the measuring system and the CT port of the measuring system all pass through the zero sequence coil of the current transformer 0, the head end of the secondary side of the zero sequence current transformer CT0 is connected with the input end of a zero sequence current meter A0, the output end of the zero sequence current meter A0 is connected with the tail end of the secondary side of the zero sequence current transformer CT0, a high-voltage arm capacitor and a low-voltage wall capacitor are connected among the port A of the measurement system, the port B of the measurement system, the port B of the measurement system, the port C of the measurement system and the port C of the measurement system, the low-voltage wall capacitor is connected with a zero sequence voltage transformer PT0, and a zero sequence voltmeter V0 for displaying a zero sequence voltage value is arranged on the zero sequence voltage transformer.
2. The electrical measurement system of a primary and secondary fused set of pole-mounted circuit breakers source end of claim 1, wherein: the high-voltage arm capacitor comprises an A-phase high-voltage arm capacitor Ca1 connected to a connection line of an A port of a measurement system and an a port of the measurement system, a B-phase high-voltage arm capacitor Cb1 connected to a connection line of a B port of the measurement system and a B port of the measurement system, and a C-phase high-voltage arm capacitor Cc1 connected to a connection line of a C port of the measurement system and a B port of the measurement system, the low-voltage wall capacitors comprise an A-phase low-voltage arm capacitor Ca2, a B-phase low-voltage arm capacitor Cb2 and a C-phase low-voltage arm capacitor Cc2, the output end of the A-phase high-voltage arm capacitor Ca1 is connected with the input end of the A-phase low-voltage arm capacitor Ca2, the output end of the B-phase high-voltage arm capacitor Cb1 is connected with the input end of the B-phase low-voltage arm capacitor Cb2, the output end of the C-phase high-voltage arm capacitor Cc1 is connected with the input end of a, The output end of the B-phase low-voltage arm capacitor Cb2 is connected with the tail end of the A-phase primary side winding of the zero-sequence voltage transformer PT0, and the output end of the C-phase low-voltage arm capacitor Cc2 is connected with the tail end of the B-phase primary side winding of the zero-sequence voltage transformer PT 0.
3. The electrical measurement system of a primary and secondary fused set of pole-mounted circuit breakers, according to claim 2, wherein: the head end of the A-phase secondary side winding of the zero sequence voltage transformer PT0 is connected with the input end of the zero sequence voltage transformer V0, the tail end of the A-phase secondary side winding of the zero sequence voltage transformer PT0 is connected with the head end of the B-phase secondary side winding of the zero sequence voltage transformer PT0, the tail end of the B-phase secondary side winding of the zero sequence voltage transformer PT0 is connected with the head end of the C-phase secondary side winding of the zero sequence voltage transformer PT0, and the tail end of the C-phase secondary side winding of the zero sequence voltage transformer PT0 is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135487.3A CN110780221A (en) | 2019-11-19 | 2019-11-19 | Electrical measurement system for source end of circuit breaker on primary and secondary fusion complete set of column |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911135487.3A CN110780221A (en) | 2019-11-19 | 2019-11-19 | Electrical measurement system for source end of circuit breaker on primary and secondary fusion complete set of column |
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| CN110780221A true CN110780221A (en) | 2020-02-11 |
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| CN201911135487.3A Pending CN110780221A (en) | 2019-11-19 | 2019-11-19 | Electrical measurement system for source end of circuit breaker on primary and secondary fusion complete set of column |
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Cited By (1)
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| CN112083248A (en) * | 2020-09-16 | 2020-12-15 | 国网湖北省电力有限公司电力科学研究院 | Synchronous measurement system for circuit breaker on primary and secondary integrated complete column |
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Application publication date: 20200211 |