CN110514911B - System and method for generating power plant high-voltage bus power supply phase checking - Google Patents
System and method for generating power plant high-voltage bus power supply phase checking Download PDFInfo
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- CN110514911B CN110514911B CN201910804493.7A CN201910804493A CN110514911B CN 110514911 B CN110514911 B CN 110514911B CN 201910804493 A CN201910804493 A CN 201910804493A CN 110514911 B CN110514911 B CN 110514911B
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Abstract
The invention discloses a system and a method for high-voltage bus power supply phase checking of a power plant, which comprises a working power supply unit, a generator breaker unit, a working power supply common-box bus, a working power supply incoming line flexible connection, a working power supply incoming line switch, a working power supply incoming line voltage transformer, a standby power supply unit, a standby power supply common-box bus, a standby power supply incoming line flexible connection, a standby power supply incoming line switch, a standby power supply incoming line voltage transformer, a high-voltage bus voltage transformer and a high-voltage bus.
Description
Technical Field
The invention belongs to the technical field of electric power debugging and electric power testing, and relates to a system and a method for phase checking of a high-voltage bus power supply of a power plant.
Background
The 6kV or 10kV high-voltage station bus is usually arranged in power plants and large factories and mines to meet the requirement of station high-voltage load. Generally, a high-voltage bus is provided with two paths of power supplies for power supply, and a working power supply inlet wire is taken from the low-voltage side of a high-voltage station transformer through a working power supply inlet wire switch; the standby power supply is taken from a standby transformer low-voltage side through a standby power supply inlet switch, and the main transformer and the standby transformer are connected with the high-voltage bus through the high-voltage circuit breaker. When the high-voltage bus operates, power is usually supplied by one power supply, and power switching is completed by the auxiliary power quick-switching device. The switching modes of the working power supply and the standby power supply are three types: parallel switching, simultaneous switching, and series switching. The situation that two power supplies are subjected to loop closing operation in the parallel switching process and the simultaneous switching process is solved, so that a working power supply and a standby power supply need to be phase checked in advance, and an interphase short circuit accident caused by non-synchronous parallel connection is prevented.
Under normal conditions, according to design, a working power supply incoming line power supply obtained after the high-voltage power supply is subjected to angle conversion through the main transformer and the high-voltage station transformer and a standby power supply obtained after the high-voltage power supply passes through the standby variable angle should have the same phase, the same phase sequence and the same angle. Then, because the wiring mode of the working transformer is not in accordance with the design, the non-in-phase accident caused by the wiring error of the common box bus at the low-voltage side of the transformer occurs, and in this case, once the double power supplies are arranged in parallel, the inter-phase short circuit accident can be caused.
The current high-voltage bus power supply phase checking mode is as follows: and pulling the service or standby power supply inlet switch out of the switch chamber, manually supporting a baffle of a contact in the switch, and carrying out primary phase checking by using a high-voltage phase checking rod. The method is accurate in phase checking, but in a switch room, a baffle is manually supported to violate safety regulations, a phase checking rod is used for checking the phase in a narrow space, wiring is mostly crossed, the danger is high, and too many accidents occur. Therefore, it is of great importance to find a safe and reliable system and method for high-voltage bus power supply phase checking.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a system and a method for phase checking of a high-voltage bus power supply of a power plant.
In order to achieve the purpose, the system for the nuclear phase of the high-voltage bus power supply of the power plant comprises a working power supply unit, a generator breaker unit, a working power supply common-box bus, a working power supply incoming line flexible connection, a working power supply incoming line switch, a working power supply incoming line voltage transformer, a standby power supply unit, a standby power supply common-box bus, a standby power supply incoming line flexible connection, a standby power supply incoming line switch, a standby power supply incoming line voltage transformer, a high-voltage bus voltage transformer and a high-voltage bus;
the generator circuit breaker unit is connected with the working power supply unit, and the output end of the working power supply unit is connected with one end of a working power supply inlet wire switch and a working power supply inlet wire voltage transformer through a working power supply common box bus and a working power supply inlet wire flexible connection; the standby power supply unit is connected with one end of a standby power supply inlet wire switch and a standby power supply inlet wire voltage transformer through a standby power supply common box bus and a standby power supply inlet wire flexible connection; the other end of the standby power supply inlet wire switch, the other end of the working power supply inlet wire switch and the high-voltage bus voltage transformer are connected with a high-voltage bus, and a working power supply inlet wire switch position node, a standby power supply inlet wire switch position node, a secondary voltage side of the working power supply inlet wire voltage transformer, a secondary voltage side of the standby power supply inlet wire voltage transformer and a secondary voltage side of the high-voltage bus voltage transformer are connected with a bus fast-switching device.
The working power supply unit comprises a working power supply high-voltage bus, a working power supply high-voltage side circuit breaker, a main transformer and a high-voltage working transformer, the working power supply high-voltage bus is connected with one end of the high-voltage working transformer and the generator circuit breaker unit through the working power supply high-voltage side circuit breaker and the main transformer, and the other end of the high-voltage working transformer is connected with a working power supply common-box bus.
The standby power supply unit comprises a standby power supply high-voltage side bus, a standby power supply high-voltage side circuit breaker and a standby transformer, wherein the standby power supply high-voltage side bus is connected with the standby power supply common-box bus through the standby power supply high-voltage side circuit breaker and the standby transformer.
The generator circuit breaker unit comprises a generator and a generator outlet circuit breaker, wherein the output end of the generator is connected with the high-voltage working transformer through the generator outlet circuit breaker.
The method for the nuclear phase of the high-voltage bus power supply of the power plant comprises the following steps:
1) preparing a high-voltage bus power supply nuclear phase test;
2) closing the standby power supply high-voltage side circuit breaker and the working power supply high-voltage side circuit breaker to enable the working power supply common box bus and the standby power supply common box bus to be electrified stably;
3) detecting the voltages, amplitudes and phase sequences of a working power supply incoming line voltage transformer and a standby power supply incoming line voltage transformer through a phase meter, judging whether the voltages, amplitudes and phase sequences of the working power supply incoming line voltage transformer and the standby power supply incoming line voltage transformer are correct, judging whether a secondary side measured value of the working power supply incoming line voltage transformer is consistent with a secondary side theoretical calculated value of the working power supply incoming line voltage transformer when the secondary side measured value of the working power supply incoming line voltage transformer is consistent with the secondary side theoretical calculated value of the working power supply incoming line voltage transformer when the system rated voltage, and indicating that the working power supply unit is correctly wired; judging whether a secondary side measured value of the standby power supply incoming line voltage transformer is consistent with a secondary side theoretical calculated value of the standby power supply incoming line voltage transformer when the system rated voltage is reached, when the secondary side measured value of the standby power supply incoming line voltage transformer is consistent with the secondary side theoretical calculated value of the standby power supply incoming line voltage transformer when the system rated voltage is reached, indicating that the standby power supply unit is correctly wired, and when the wiring of the standby power supply unit is correct, indicating that the wiring of a secondary circuit is complete and correct, turning to the step 5); otherwise, turning to the step 4);
4) when the working power supply unit is in wrong wiring, the working power supply high-voltage side circuit breaker is disconnected; when the standby power supply unit is in wrong wiring, disconnecting the high-voltage side circuit breaker of the standby power supply, searching and eliminating the defect of the abnormal unit, and returning to the step 2);
5) closing the working power supply inlet wire switch and the standby power supply inlet wire switch to electrify the working power supply inlet wire switch, the standby power supply inlet wire switch, the high-voltage bus, the working power supply inlet wire voltage transformer and the standby power supply inlet wire voltage transformer;
6) measuring the secondary side actual voltages of a high-voltage bus voltage transformer, a working power supply inlet wire voltage transformer and a standby power supply inlet wire voltage transformer;
7) respectively judging whether the secondary side actual voltage of the high-voltage bus voltage transformer, the working power supply incoming line voltage transformer and the standby power supply incoming line voltage transformer is consistent with the secondary side voltage theoretical calculated value, simultaneously, whether the phase sequence of the high-voltage bus voltage transformer, the working power supply incoming line voltage transformer and the standby power supply incoming line voltage transformer is the correct phase sequence or not is respectively judged, so as to complete homologous nuclear phases of a high-voltage bus voltage transformer, a working power supply incoming line voltage transformer and a standby power supply incoming line voltage transformer, when the homologous nuclear phase results of the high-voltage bus voltage transformer, the working power supply incoming line voltage transformer and the standby power supply incoming line voltage transformer are all correct, if the incoming line of the working power supply unit, the primary equipment and the secondary equipment of the incoming line of the high-voltage bus and the standby power supply unit are normal, the step 9) is carried out, and if the incoming line of the working power supply unit, the primary equipment and the secondary equipment of the incoming line of the high-voltage bus and the standby power supply unit are normal, the step 8) is carried out;
8) disconnecting the working power supply inlet wire switch and the standby power supply inlet wire switch to ensure that the working power supply inlet wire switch, the standby power supply inlet wire switch, the high-voltage bus, the working power supply inlet wire voltage transformer and the standby power supply inlet wire voltage transformer are powered off, searching and eliminating the abnormal unit defects, and returning to the step 5);
9) disconnecting the working power supply inlet wire switch and the standby power supply inlet wire switch, recovering the flexible connection between the working power supply inlet wire switch and the working power supply common box bus, recovering the flexible connection between the standby power supply inlet wire switch and the standby power supply common box bus, and turning to the step 10);
10) closing the working power supply high-voltage side circuit breaker and the standby power supply high-voltage side circuit breaker, and turning to the step 11 when the standby power supply unit, the working power supply common box bus and the standby power supply common box bus are electrified and stable;
11) performing non-homologous phase checking on the working power supply unit and the standby power supply unit, checking whether the polarity of the incoming line voltage of the working power supply unit is consistent with that of the incoming line voltage of the standby power supply unit, and turning to the step 13) when the polarity of the incoming line voltage of the working power supply unit is consistent with that of the incoming line voltage of the standby power supply unit, or turning to the step 12) when the polarity of the incoming line voltage of the working power supply unit is consistent with that of the incoming line voltage of the standby power supply unit;
12) disconnecting the high-voltage side circuit breaker of the working power supply and the high-voltage side circuit breaker of the standby power supply to ensure that the working power supply unit and the standby power supply unit lose power, searching and eliminating the defects of the abnormal units, and returning to the step 10);
13) and finishing the high-voltage bus power supply nuclear phase test.
The specific operation process of the step 1) is as follows:
101) installing a working power supply unit, a standby power supply common box bus, a working power supply common box bus, a high-voltage bus, a working power supply incoming line voltage transformer, a standby power supply incoming line voltage transformer and primary equipment and secondary equipment in the range of the high-voltage bus voltage transformer, determining that the secondary equipment is correctly wired, wherein secondary circuits of the working power supply incoming line voltage transformer, the standby power supply incoming line voltage transformer and the high-voltage bus voltage transformer are not opened, primary safeties of the working power supply incoming line voltage transformer, the standby power supply incoming line voltage transformer and the high-voltage bus voltage transformer are well wired, and secondary idle opening of the working power supply incoming line voltage transformer, the standby power supply incoming line voltage transformer and the high-voltage bus voltage transformer is in a closing state;
102) the generator is shut down, the breaker at the outlet of the generator is in a brake-off state, and the inlet wire flexible connection of the working power supply and the inlet wire flexible connection of the standby power supply are removed;
103) carrying out static debugging on the bus fast-cutting device, and carrying out a transmission experiment of the bus fast-cutting device with a working power supply inlet switch and a standby power supply inlet switch;
104) and adjusting the switching-on and switching-off states of the working power supply incoming line switch and the standby power supply incoming line switch to be opposite, and adjusting the working power supply high-voltage side circuit breaker and the standby power supply high-voltage side circuit breaker to be in a hot standby state.
The specific operation of the step 3) is as follows: measuring and recording the voltage values and phase sequences of each group of voltage transformers in local terminal boxes of a high-voltage bus voltage transformer, a working power supply incoming line voltage transformer and a standby power supply incoming line voltage transformer by using a phase meter, judging whether the phase sequence is a positive phase sequence, and simultaneously determining whether the voltage value is consistent with a normal output voltage value under a rated condition;
the voltage values and the phase sequences of all groups of voltage transformers in the local terminal boxes of the high-voltage bus voltage transformer, the working power supply incoming line voltage transformer and the standby power supply incoming line voltage transformer are checked on the bus fast-cutting device and are respectively compared with the voltage values and the phase sequences acquired by the phase meter, so that the correct wiring and polarity configuration of the working power supply incoming line voltage transformer and the standby power supply incoming line voltage transformer is ensured.
In step 7), the working power supply incoming line switch, the working power supply incoming line voltage transformer, the standby power supply incoming line switch, the standby power supply incoming line voltage transformer, the high-voltage bus and the high-voltage bus voltage transformer are all located in a homologous system, the homologous system is located under rated voltage, at the moment, theoretically, the voltage polarity of the working power supply incoming line voltage transformer, the voltage polarity of the high-voltage bus voltage transformer 8 and the voltage polarity of the standby power supply incoming line voltage transformer are all consistent, when the voltage polarity of any one voltage transformer is inconsistent with the voltage polarities of the other two voltage transformers, the voltage transformer has a wiring or performance problem, and at the moment, the defect of an abnormal voltage transformer needs to be searched and eliminated, and a homologous nuclear phase test is continued again;
reading the angle difference, the pressure difference and the frequency difference between the incoming line voltage of the working power supply and the high-voltage bus voltage on a screen of the bus fast-cutting device, not processing when the angle difference, the pressure difference and the frequency difference between the incoming line voltage of the working power supply and the high-voltage bus voltage are zero, and searching and eliminating the defect of the abnormal voltage transformer to continue the homologous nuclear phase test again when any one of the angle difference, the pressure difference and the frequency difference between the incoming line voltage of the working power supply and the high-voltage bus voltage is not zero.
The specific operation of step 9) is: disconnecting the working power supply incoming line switch and the standby power supply incoming line switch, enabling the standby power supply to share the box bus, the working power supply incoming line switch and the standby power supply incoming line switch to be in a power-off state, then suspending the grounding wire, then recovering the flexible connection between the working power supply incoming line switch and the working power supply sharing the box bus, simultaneously recovering the flexible connection between the standby power supply incoming line switch and the standby power supply sharing the box bus, then detaching the grounding wire, and then turning to the step 10).
Step 11) further comprises the following steps:
1101) checking whether the secondary voltage amplitude of the working power supply inlet wire voltage transformer is rated voltage divided by the transformation ratio of the working power supply inlet wire voltage transformer, whether the phase sequence is positive phase sequence and whether zero sequence voltage is zero;
1102) checking whether the secondary voltage amplitude of the standby power supply inlet line voltage transformer is rated voltage divided by the transformation ratio of the standby power supply inlet line voltage transformer, whether the phase sequence is positive phase sequence and whether zero sequence voltage is zero;
1103) checking whether the secondary voltage amplitude of the high-voltage bus voltage transformer is the rated voltage divided by the transformation ratio of the high-voltage bus voltage transformer, whether the phase sequence is a positive phase sequence and whether the zero-sequence voltage is zero;
1104) checking whether secondary voltage frequency differences of a working power supply incoming line voltage transformer, a standby power supply incoming line voltage transformer and a high-voltage bus voltage transformer are zero, whether phase angle differences are smaller than 3 degrees, and whether the pressure difference between the same phases is smaller than 5V;
1105) and checking whether secondary voltage frequency differences of the working power supply incoming line voltage transformer, the standby power supply incoming line voltage transformer and the high-voltage bus voltage transformer read from the bus fast-cutting device 15 are zero, whether the phase angle difference is less than 3 degrees, and whether the voltage difference between the same phases is less than 5V.
The invention has the following beneficial effects:
the system and the method for the nuclear phase of the high-voltage bus power supply of the power plant adopt a working power supply unit and a standby power supply unit as voltage sources to carry out homologous nuclear phase on a working power supply inlet wire, a working power supply inlet wire voltage transformer, a high-voltage bus voltage transformer, a standby power supply inlet wire and a standby power supply inlet wire voltage transformer, confirm that a secondary system accurately reflects the condition of a primary system, then utilize the standby power supply unit and the working power supply unit to carry out nonhomologous nuclear phase, have high test efficiency and high test correctness, eliminate the danger of artificially operating primary equipment, can quickly and accurately identify the wiring defects of the voltage transformers, the mounting defects of common buses and the wiring mode defects of transformers, avoid the phenomenon of interphase short circuit caused by non-synchronous parallel connection, have higher safety and reliability, and use the working power supply unit as a reference, the phase checking device can be used for checking the phases of a plurality of standby power supply units, is suitable for the high-voltage bus power supply phase checking work of a high-voltage bus adopting a double-power incoming line, a three-power incoming line and other multi-power incoming lines, is suitable for power plants and large factories and mines with different wiring modes, and is high in accuracy and reliability due to mutual verification of phase meter measurement and bus fast cutting device reading. In addition, the working power supply unit or the standby power supply unit is adopted as a power supply of the homologous nuclear phase, an external power supply is not needed, the economy is better, the illegal operation of manually opening a power supply incoming line switch partition plate is avoided, the risk of carrying out the nuclear phase in a narrow space is avoided, the probability of injury to personnel is greatly reduced, and the safety is high.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a flow chart of the present invention.
The system comprises a working power supply unit 1, a working power supply common box bus 2, a working power supply incoming line flexible connection 3, a working power supply incoming line voltage transformer 4, a working power supply incoming line switch 5, a working power supply incoming line switch 6, a working power supply incoming line switch position node 7, a high-voltage bus 8, a high-voltage bus voltage transformer 9, a standby power supply incoming line switch 10, a standby power supply incoming line switch position node 11, a standby power supply incoming line voltage transformer 11, a standby power supply incoming line flexible connection 12, a standby power supply common box bus 13, a standby power supply unit 14, a bus fast switching device 15, a generator breaker unit 16, a working power supply incoming line switch 1DL, a standby power supply incoming line switch 2DL, a standby power supply high-voltage side breaker 3DL, a standby power supply high-voltage side breaker 4DL and a generator outlet breaker GCB.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the system for generating a nuclear phase of a high-voltage bus power supply of a power plant according to the present invention includes a working power supply unit 1, a generator breaker unit 16, a working power supply common-box bus 2, a working power supply incoming line flexible connection 3, a working power supply incoming line switch 5, a working power supply incoming line voltage transformer 4, a standby power supply unit 14, a standby power supply common-box bus 13, a standby power supply incoming line flexible connection 12, a standby power supply incoming line switch 9, a standby power supply incoming line voltage transformer 11, a high-voltage bus voltage transformer 8, and a high-voltage bus 7; the generator circuit breaker unit 16 is connected with the working power supply unit 1, and the output end of the working power supply unit 1 is connected with one end of a working power supply inlet wire switch 5 and a working power supply inlet wire voltage transformer 4 through a working power supply common box bus 2 and a working power supply inlet wire flexible connection 3; the standby power supply unit 14 is connected with one end of a standby power supply inlet wire switch 9 and a standby power supply inlet wire voltage transformer 11 through a standby power supply common box bus 13 and a standby power supply inlet wire flexible connection 12; the other end of the standby power supply inlet wire switch 9, the other end of the working power supply inlet wire switch 5 and the high-voltage bus voltage transformer 8 are connected with a high-voltage bus 7, and a working power supply inlet wire switch position node 6, a standby power supply inlet wire switch position node 10, the secondary voltage side of the working power supply inlet wire voltage transformer 4, the secondary voltage side of the standby power supply inlet wire voltage transformer 11 and the secondary voltage side of the high-voltage bus voltage transformer 8 are all connected with a bus fast-cutting device 15.
The working power supply unit 1 comprises a working power supply high-voltage bus, a working power supply high-voltage side circuit breaker 1DL, a main transformer and a high-voltage working transformer, the working power supply high-voltage bus is connected with one end of the high-voltage working transformer and the generator circuit breaker unit 16 through the working power supply high-voltage side circuit breaker 1DL and the main transformer, and the other end of the high-voltage working transformer is connected with a working power supply common box bus 2; the standby power supply unit 14 comprises a standby power supply high-voltage side bus, a standby power supply high-voltage side circuit breaker 2DL and a standby transformer, wherein the standby power supply high-voltage side bus is connected with the standby power supply common box bus 13 through the standby power supply high-voltage side circuit breaker 2DL and the standby transformer; the generator circuit breaker unit 16 comprises a generator and a generator outlet circuit breaker GCB, wherein the output of the generator is connected to the high voltage working transformer via the generator outlet circuit breaker GCB.
Referring to fig. 2, the method for the nuclear phase of the high-voltage bus power supply of the power plant comprises the following steps:
1) preparing a high-voltage bus power supply nuclear phase test;
2) closing the standby power supply high-voltage side circuit breaker 2DL and the working power supply high-voltage side circuit breaker 1DL to ensure that the working power supply common box bus 2 and the standby power supply common box bus 13 are electrified stably;
3) detecting the voltages, amplitudes and phase sequences of a working power supply incoming line voltage transformer 4 and a standby power supply incoming line voltage transformer 11 through a phase meter, judging whether the voltages, amplitudes and phase sequences of the working power supply incoming line voltage transformer 4 and the standby power supply incoming line voltage transformer 11 are correct, judging whether a secondary side measured value of the working power supply incoming line voltage transformer 4 is consistent with a secondary side theoretical calculated value of the working power supply incoming line voltage transformer 4 when the secondary side measured value of the working power supply incoming line voltage transformer 4 is consistent with the secondary side theoretical calculated value of the working power supply incoming line voltage transformer 4 when the system rated voltage is reached, and indicating that the working power supply unit 1 is correctly wired when the secondary side measured value of the working power supply incoming line voltage transformer 4 is consistent with the secondary side theoretical calculated value of the working power supply incoming line voltage transformer 4 when the system rated voltage is reached; judging whether the secondary side measured value of the standby power incoming line voltage transformer 11 is consistent with the secondary side theoretical calculated value of the standby power incoming line voltage transformer 11 when the system rated voltage is reached, when the secondary side measured value of the standby power incoming line voltage transformer 11 is consistent with the secondary side theoretical calculated value of the standby power incoming line voltage transformer 11 when the system rated voltage is reached, indicating that the standby power unit 14 is correctly wired, and when the wiring of the standby power unit 14 is correct with the wiring of the working power unit 1, indicating that the secondary circuit is completely wired, and turning to the step 5); otherwise, turning to the step 4);
4) when the working power supply unit 1 is in wrong wiring, the working power supply high-voltage side circuit breaker 1DL is disconnected; when the standby power supply unit 14 is in wrong wiring, disconnecting the standby power supply high-voltage side circuit breaker 2DL, searching and eliminating the defect of the abnormal unit, and returning to the step 2);
5) closing the working power supply inlet wire switch 5 and the standby power supply inlet wire switch 9 to electrify the working power supply inlet wire switch 5, the standby power supply inlet wire switch 9, the high-voltage bus 7, the working power supply inlet wire voltage transformer 4 and the standby power supply inlet wire voltage transformer 11;
6) measuring the secondary side actual voltages of a high-voltage bus voltage transformer 8, a working power supply incoming line voltage transformer 4 and a standby power supply incoming line voltage transformer 11;
7) respectively judging whether the secondary side actual voltages of the high-voltage bus voltage transformer 8, the working power supply incoming line voltage transformer 4 and the standby power supply incoming line voltage transformer 11 are consistent with the secondary side voltage theoretical calculated values or not, simultaneously respectively judging whether the phase sequences of the high-voltage bus voltage transformer 8, the working power supply incoming line voltage transformer 4 and the standby power supply incoming line voltage transformer 11 are correct or not so as to finish homologous nuclear phases of the high-voltage bus voltage transformer 8, the working power supply incoming line voltage transformer 4 and the standby power supply incoming line voltage transformer 11, when the homologous nuclear phase results of the high-voltage bus voltage transformer 8, the working power supply incoming line voltage transformer 4 and the standby power supply incoming line voltage transformer 11 are correct, indicating that primary equipment and secondary equipment of incoming lines of the working power supply unit 1, the high-voltage bus 7 and the standby power supply unit 14 are normal, go to step 9), otherwise, go to step 8);
8) disconnecting the working power supply incoming line switch 5 and the standby power supply incoming line switch 9 to ensure that the working power supply incoming line switch 5, the standby power supply incoming line switch 9, the high-voltage bus 7, the working power supply incoming line voltage transformer 4 and the standby power supply incoming line voltage transformer 11 lose power, searching and eliminating the defect of an abnormal unit, and returning to the step 5);
9) disconnecting the working power supply inlet wire switch 5 and the standby power supply inlet wire switch 9, recovering the soft connection between the working power supply inlet wire switch 5 and the working power supply common box bus 2, recovering the soft connection between the standby power supply inlet wire switch 9 and the standby power supply common box bus 13, and then turning to the step 10);
10) closing the working power supply high-voltage side circuit breaker 1DL and the standby power supply high-voltage side circuit breaker 2DL, and turning to the step 11 when the standby power supply unit 14, the working power supply unit 1, the working power supply common box bus 2 and the standby power supply common box bus 13 are electrified and stabilized;
11) performing non-homologous phase checking on the working power supply unit 1 and the standby power supply unit 14, checking whether the polarity of the incoming line voltage of the working power supply unit 1 is consistent with the polarity of the incoming line voltage of the standby power supply unit 14, and when the polarity of the incoming line voltage of the working power supply unit 1 is consistent with the polarity of the incoming line voltage of the standby power supply unit 14, turning to the step 13), otherwise, turning to the step 12);
12) disconnecting the working power supply high-voltage side circuit breaker 1DL and the standby power supply high-voltage side circuit breaker 2DL to ensure that the working power supply unit 1 and the standby power supply unit 14 lose power, searching and eliminating the defect of the abnormal unit, and returning to the step 10);
13) and finishing the high-voltage bus power supply nuclear phase test.
The specific operation process of the step 1) is as follows:
101) installing a working power supply unit 1, a standby power supply unit 14, a standby power supply common box bus 13, a working power supply common box bus 2, a high-voltage bus 7, a working power supply incoming line voltage transformer 4, a standby power supply incoming line voltage transformer 11 and primary equipment and secondary equipment in the range of the high-voltage bus voltage transformer 8, determining that the secondary equipment is correctly wired, wherein secondary loops of the working power supply incoming line voltage transformer 4, the standby power supply incoming line voltage transformer 11 and the high-voltage bus voltage transformer 8 are free from an open circuit phenomenon, primary safeties of the working power supply incoming line voltage transformer 4, the standby power supply incoming line voltage transformer 11 and the high-voltage bus voltage transformer 8 are well wired, and secondary idle openings of the working power supply incoming line voltage transformer 4, the standby power supply incoming line voltage transformer 11 and the high-voltage bus voltage transformer 8 are in a closing state;
102) the generator is shut down, the generator outlet circuit breaker GCB is in a brake-off state, and the working power supply inlet wire flexible connection 3 and the standby power supply inlet wire flexible connection 12 are removed;
103) carrying out static debugging on the bus fast-cutting device 15, and carrying out a transmission experiment on the bus fast-cutting device 15 with the working power supply inlet switch 5 and the standby power supply inlet switch 9;
104) the opening and closing states of the working power supply inlet wire switch 5 and the standby power supply inlet wire switch 9 are adjusted to be opposite, and the working power supply high-voltage side circuit breaker 1DL and the standby power supply high-voltage side circuit breaker 2DL are adjusted to be in a hot standby state.
The specific operation of the step 3) is as follows: measuring and recording the voltage values and phase sequences of each group of voltage transformers in a local terminal box of a high-voltage bus voltage transformer 8, a working power supply incoming line voltage transformer 4 and a standby power supply incoming line voltage transformer 11 by using a phase meter, judging whether the phase sequence is a positive phase sequence, and simultaneously determining whether the voltage value is consistent with a normal output voltage value under a rated condition;
the voltage values and phase sequences of all groups of voltage transformers in the local terminal boxes of the high-voltage bus voltage transformer 8, the working power supply incoming line voltage transformer 4 and the standby power supply incoming line voltage transformer 11 are checked on the bus fast-cutting device 15 and are respectively compared with the voltage values and the phase sequences acquired by the phase meter, so that the correct wiring and polarity configuration of the working power supply incoming line voltage transformer 4 and the standby power supply incoming line voltage transformer 11 is ensured.
In the step 7), the working power supply incoming line switch 5, the working power supply incoming line voltage transformer 4, the standby power supply incoming line switch 9, the standby power supply incoming line voltage transformer 11, the high-voltage bus 7 and the high-voltage bus voltage transformer 8 are all located in a homologous system, the homologous system is located at a rated voltage, at the moment, theoretically, the voltage polarity of the working power supply incoming line voltage transformer 4, the voltage polarity of the high-voltage bus voltage transformer 8 and the voltage polarity of the standby power supply incoming line voltage transformer 11 are all consistent, when the voltage polarity of any one voltage transformer is inconsistent with the voltage polarities of the other two voltage transformers, the voltage transformer has a wiring or performance problem, and at the moment, the defect of an abnormal voltage transformer needs to be searched and eliminated, and a homologous nuclear phase test is continuously carried out again;
on the screen of the bus fast-cutting device 15, the angle difference, the voltage difference and the frequency difference between the incoming line voltage of the working power supply and the voltage of the high-voltage bus 7 are read, when the angle difference, the voltage difference and the frequency difference between the incoming line voltage of the working power supply and the voltage of the high-voltage bus 7 are zero, no processing is performed, and when any one of the angle difference, the voltage difference and the frequency difference between the incoming line voltage of the working power supply and the voltage of the high-voltage bus 7 is not zero, the defect of the abnormal voltage transformer needs to be searched and eliminated, and the homologous nuclear phase test is continued again.
The specific operation of step 9) is: disconnecting the working power supply incoming line switch 5 and the standby power supply incoming line switch 9, wherein the standby power supply is in a power-off state together with the box bus 13, the working power supply is in a box bus 2, the working power supply incoming line switch 5 and the standby power supply incoming line switch 9 are in a power-off state, then hanging the grounding wire, then recovering the flexible connection between the working power supply incoming line switch 5 and the working power supply in the box bus 2, simultaneously recovering the flexible connection between the standby power supply incoming line switch 9 and the standby power supply in the box bus 13, then dismantling the grounding wire, and then turning to the step 10).
Step 11) further comprises the following steps:
1101) checking whether the secondary voltage amplitude of the working power supply inlet wire voltage transformer 4 is rated voltage divided by the transformation ratio of the working power supply inlet wire voltage transformer 4, whether the phase sequence is positive phase sequence and whether zero sequence voltage is zero;
1102) checking whether the secondary voltage amplitude of the standby power supply incoming line voltage transformer 11 is rated voltage divided by the transformation ratio of the standby power supply incoming line voltage transformer 11, whether the phase sequence is positive phase sequence and whether the zero sequence voltage is zero;
1103) checking whether the secondary voltage amplitude of the high-voltage bus voltage transformer 8 is the rated voltage divided by the transformation ratio of the high-voltage bus voltage transformer 8, whether the phase sequence is a positive phase sequence and whether the zero-sequence voltage is zero;
1104) checking whether the secondary voltage frequency difference of the working power supply incoming line voltage transformer 4, the standby power supply incoming line voltage transformer 11 and the high-voltage bus voltage transformer 8 is zero, whether the phase angle difference is less than 3 degrees, and whether the voltage difference between the same phases is less than 5V;
1105) and (3) checking whether the secondary voltage frequency differences of the working power supply incoming line voltage transformer 4, the standby power supply incoming line voltage transformer 11 and the high-voltage bus voltage transformer 8 read from the bus fast-cutting device 15 are zero, whether the phase angle difference is less than 3 degrees, and whether the voltage difference between the same phases is less than 5V.
The specific operation process for searching and eliminating the abnormal unit defect in the step 12) comprises the following steps:
1201) checking whether the wiring modes and the designs of the standby transformer, the main transformer and the high-voltage working transformer are consistent;
1202) checking whether a standby transformer, a main transformer, a high-voltage working transformer, a working power supply common box bus 2 and a standby power supply common box bus 13 are constructed according to a drawing, and checking whether each phase of the standby transformer corresponds to each phase of wiring of a standby power supply inlet switch 9; and simultaneously checking whether each phase of the high-voltage working transformer corresponds to each phase of the working power supply inlet switch 5.
When the high-voltage bus power supply nuclear phase test is carried out, the working power supply unit 1 is used as a voltage source to carry out homologous nuclear phase on working power supply incoming lines, the working power supply incoming line voltage transformer 4, the high-voltage bus 7, the high-voltage bus voltage transformer 8, standby power supply incoming lines and the standby power supply incoming line voltage transformer 11, after the condition that a secondary system accurately reflects a primary system is confirmed, the standby power supply unit 14 and the working power supply unit 1 are used for carrying out non-homologous nuclear phase, the test efficiency is high, the test accuracy is high, the danger of manually operating primary equipment is eliminated, the voltage transformer wiring defect, the common-box bus installation defect and the transformer wiring mode defect can be quickly and accurately identified, and the interphase short circuit phenomenon caused by non-homologous parallel connection is avoided. In addition, the invention can carry out phase checking on a plurality of standby power supply units 14 by taking the working power supply unit 1 as a reference, and is suitable for the high-voltage bus power supply phase checking work of a high-voltage bus 7 adopting a double-power-supply incoming line, a three-power-supply incoming line and other multi-power-supply incoming lines.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (7)
1. A method for a nuclear phase of a high-voltage bus power supply of a power plant is characterized in that based on a system for the nuclear phase of the high-voltage bus power supply of the power plant, the system for the nuclear phase of the high-voltage bus power supply of the power plant comprises a working power supply unit (1), a generator breaker unit (16), a working power supply common box bus (2), a working power supply incoming line flexible connection (3), a working power supply incoming line switch (5), a working power supply incoming line voltage transformer (4), a standby power supply unit (14), a standby power supply common box bus (13), a standby power supply incoming line flexible connection (12), a standby power supply incoming line switch (9), a standby power supply incoming line voltage transformer (11), a high-voltage bus voltage transformer (8) and a high-voltage bus (7);
the generator circuit breaker unit (16) is connected with the working power supply unit (1), and the output end of the working power supply unit (1) is connected with one end of a working power supply inlet wire switch (5) and a working power supply inlet wire voltage transformer (4) through a working power supply common box bus (2) and a working power supply inlet wire flexible connection (3); the standby power supply unit (14) is connected with one end of a standby power supply inlet wire switch (9) and a standby power supply inlet wire voltage transformer (11) through a standby power supply common box bus (13) and a standby power supply inlet wire flexible connection (12); the other end of the standby power supply inlet wire switch (9), the other end of the working power supply inlet wire switch (5) and the high-voltage bus voltage transformer (8) are connected with a high-voltage bus (7), and a working power supply inlet wire switch position node (6), a standby power supply inlet wire switch position node (10), the secondary voltage side of the working power supply inlet wire voltage transformer (4), the secondary voltage side of the standby power supply inlet wire voltage transformer (11) and the secondary voltage side of the high-voltage bus voltage transformer (8) are connected with a bus fast-cutting device (15);
the working power supply unit (1) comprises a working power supply high-voltage bus, a working power supply high-voltage side circuit breaker (1DL), a main transformer and a high-voltage working transformer, wherein the working power supply high-voltage bus is connected with one end of the high-voltage working transformer and the generator circuit breaker unit (16) through the working power supply high-voltage side circuit breaker (1DL) and the main transformer, and the other end of the high-voltage working transformer is connected with the working power supply common box bus (2);
the standby power supply unit (14) comprises a standby power supply high-voltage side bus, a standby power supply high-voltage side circuit breaker (2DL) and a standby transformer, wherein the standby power supply high-voltage side bus is connected with the standby power supply common box bus (13) through the standby power supply high-voltage side circuit breaker (2DL) and the standby transformer;
the method comprises the following steps:
1) preparing a high-voltage bus power supply nuclear phase test;
2) closing a standby power supply high-voltage side circuit breaker (2DL) and a working power supply high-voltage side circuit breaker (1DL) to ensure that the working power supply common box bus (2) and the standby power supply common box bus (13) are electrified and stable;
3) detecting the voltage, amplitude and phase sequence of a working power supply incoming line voltage transformer (4) and a standby power supply incoming line voltage transformer (11) through a phase meter, judging whether the voltage, amplitude and phase sequence of the working power supply incoming line voltage transformer (4) and the standby power supply incoming line voltage transformer (11) are correct, judging whether a secondary side measured value of the working power supply incoming line voltage transformer (4) is consistent with a secondary side theoretical calculated value of the working power supply incoming line voltage transformer (4) when the secondary side measured value of the working power supply incoming line voltage transformer (4) is consistent with the secondary side theoretical calculated value of the working power supply incoming line voltage transformer (4) when the system rated voltage is reached, and indicating that the working power supply unit (1) is correctly wired; judging whether a secondary side measured value of the standby power incoming line voltage transformer (11) is consistent with a secondary side theoretical calculated value of the standby power incoming line voltage transformer (11) when the secondary side measured value of the standby power incoming line voltage transformer (11) is consistent with the secondary side theoretical calculated value of the standby power incoming line voltage transformer (11) when the system rated voltage is reached, indicating that the standby power unit (14) is correctly wired, and indicating that the secondary circuit is completely wired when the wiring of the standby power unit (14) is correct and the wiring of the working power unit (1), and turning to the step 5; otherwise, turning to the step 4);
4) when the working power supply unit (1) is in wrong wiring, disconnecting a working power supply high-voltage side circuit breaker (1 DL); when the standby power supply unit (14) is in wrong wiring, disconnecting a standby power supply high-voltage side circuit breaker (2DL), searching and eliminating the defect of the abnormal unit, and returning to the step 2);
5) the working power supply inlet wire switch (5) and the standby power supply inlet wire switch (9) are closed, so that the working power supply inlet wire switch (5), the standby power supply inlet wire switch (9), the high-voltage bus (7), the working power supply inlet wire voltage transformer (4) and the standby power supply inlet wire voltage transformer (11) are electrified;
6) measuring the secondary side actual voltages of a high-voltage bus voltage transformer (8), a working power supply incoming line voltage transformer (4) and a standby power supply incoming line voltage transformer (11);
7) respectively judging whether the secondary side actual voltage of a high-voltage bus voltage transformer (8), a working power supply incoming line voltage transformer (4) and a standby power supply incoming line voltage transformer (11) is consistent with the secondary side voltage theoretical calculated value or not, simultaneously respectively judging whether the phase sequence of the high-voltage bus voltage transformer (8), the working power supply incoming line voltage transformer (4) and the standby power supply incoming line voltage transformer (11) is correct or not so as to finish homologous nuclear phase of the high-voltage bus voltage transformer (8), the working power supply incoming line voltage transformer (4) and the standby power supply incoming line voltage transformer (11), and when the homologous nuclear phase results of the high-voltage bus voltage transformer (8), the working power supply incoming line voltage transformer (4) and the standby power supply incoming line voltage transformer (11) are correct, indicating that primary equipment and secondary equipment of incoming lines of a working power supply unit (1), a high-voltage bus (7) and a standby power supply unit (14) are normal, go to step 9), otherwise, go to step 8);
8) disconnecting the working power supply inlet wire switch (5) and the standby power supply inlet wire switch (9) to ensure that the working power supply inlet wire switch (5), the standby power supply inlet wire switch (9), the high-voltage bus (7), the working power supply inlet wire voltage transformer (4) and the standby power supply inlet wire voltage transformer (11) lose power, searching and eliminating the abnormal unit defects, and returning to the step (5);
9) disconnecting the working power supply incoming line switch (5) and the standby power supply incoming line switch (9), recovering the flexible connection between the working power supply incoming line switch (5) and the working power supply common box bus (2), recovering the flexible connection between the standby power supply incoming line switch (9) and the standby power supply common box bus (13), and then turning to the step 10);
10) closing the working power supply high-voltage side circuit breaker (1DL) and the standby power supply high-voltage side circuit breaker (2DL), and turning to the step 11 after the standby power supply unit (14), the working power supply unit (1), the working power supply common box bus (2) and the standby power supply common box bus (13) are electrified and stabilized;
11) carrying out non-homologous nuclear phase checking on the working power supply unit (1) and the standby power supply unit (14), checking whether the polarity of the incoming line voltage of the working power supply unit (1) is consistent with the polarity of the incoming line voltage of the standby power supply unit (14), when the polarity of the incoming line voltage of the working power supply unit (1) is consistent with the polarity of the incoming line voltage of the standby power supply unit (14), turning to the step 13), otherwise, turning to the step 12);
12) disconnecting the working power supply high-voltage side circuit breaker (1DL) and the standby power supply high-voltage side circuit breaker (2DL) to ensure that the working power supply unit (1) and the standby power supply unit (14) lose power, searching and eliminating the defect of the abnormal unit, and returning to the step 10);
13) and finishing the high-voltage bus power supply nuclear phase test.
2. The method for nuclear phasing of a high-voltage bus power supply of a power plant according to claim 1, characterized in that the generator breaker unit (16) comprises a generator and a generator outlet breaker (GCB), wherein the output of the generator is connected to the high-voltage service transformer via the generator outlet breaker (GCB).
3. The method for the nuclear phase of the high-voltage bus power supply of the power plant as claimed in claim 1, wherein the specific operation process of the step 1) is as follows:
101) primary equipment and secondary equipment within the range of a working power supply unit (1), a standby power supply unit (14), a standby power supply common box bus (13), a working power supply common box bus (2), a high-voltage bus (7), a working power supply inlet wire voltage transformer (4), a standby power supply inlet wire voltage transformer (11) and a high-voltage bus voltage transformer (8) are installed, the wiring of the secondary equipment is determined to be correct, the secondary loops of the working power supply incoming line voltage transformer (4), the standby power supply incoming line voltage transformer (11) and the high-voltage bus voltage transformer (8) have no open circuit, the primary insurance wiring of the working power supply incoming line voltage transformer (4), the standby power supply incoming line voltage transformer (11) and the high-voltage bus voltage transformer (8) is good, the secondary air switches of the working power supply inlet wire voltage transformer (4), the standby power supply inlet wire voltage transformer (11) and the high-voltage bus voltage transformer (8) are in a closing state;
102) the generator is shut down, a generator outlet circuit breaker (GCB) is in a brake-off state, and the working power supply inlet wire flexible connection (3) and the standby power supply inlet wire flexible connection (12) are removed;
103) carrying out static debugging on the bus fast-cutting device (15), and carrying out a transmission experiment on the bus fast-cutting device (15) with a working power supply inlet switch (5) and a standby power supply inlet switch (9);
104) the switching-on and switching-off states of the working power supply incoming line switch (5) and the standby power supply incoming line switch (9) are adjusted to be opposite, and the working power supply high-voltage side circuit breaker (1DL) and the standby power supply high-voltage side circuit breaker (2DL) are adjusted to be in a hot standby state.
4. The method for nuclear phasing of a high-voltage bus power supply of a power plant according to claim 1, wherein the specific operations of step 3) are: measuring and recording the voltage values and phase sequences of each group of voltage transformers in local terminal boxes of a high-voltage bus voltage transformer (8), a working power supply incoming line voltage transformer (4) and a standby power supply incoming line voltage transformer (11) by using a phase meter, judging whether the phase sequence is a positive phase sequence, and simultaneously determining whether the voltage value is consistent with a normal output voltage value under a rated condition;
the voltage values and the phase sequences of all groups of voltage transformers in local terminal boxes of a high-voltage bus voltage transformer (8), a working power supply incoming line voltage transformer (4) and a standby power supply incoming line voltage transformer (11) are checked on a bus fast-cutting device (15), and are compared with the voltage values and the phase sequences acquired by a phase meter respectively, so that the wiring and polarity configuration of the working power supply incoming line voltage transformer (4) and the standby power supply incoming line voltage transformer (11) is correct.
5. The method for the nuclear phase of the high-voltage bus power supply of the power plant according to claim 1, wherein in step 7), the working power supply inlet wire switch (5), the working power supply inlet wire voltage transformer (4), the standby power supply inlet wire switch (9), the standby power supply inlet wire voltage transformer (11), the high-voltage bus (7) and the high-voltage bus voltage transformer (8) are all positioned in a homologous system, the homologous system is under rated voltage, at the moment, theoretically, the voltage polarity of a working power supply inlet wire voltage transformer (4), the voltage polarity of a high-voltage bus voltage transformer (8) and the voltage polarity of a standby power supply inlet wire voltage transformer (11) are all consistent, when the voltage polarity of any voltage transformer is inconsistent with the voltage polarities of the other two voltage transformers, the voltage transformer has wiring or performance problems, and at the moment, the defects of the abnormal voltage transformer need to be searched and eliminated, and the homologous nuclear phase test is carried out again;
on a screen of the bus fast-cutting device (15), reading the angle difference, the pressure difference and the frequency difference between the incoming line voltage of the working power supply and the voltage of the high-voltage bus (7), when the angle difference, the pressure difference and the frequency difference between the incoming line voltage of the working power supply and the voltage of the high-voltage bus (7) are zero, processing is not carried out, and when any one of the angle difference, the pressure difference and the frequency difference between the incoming line voltage of the working power supply and the voltage of the high-voltage bus (7) is not zero, the defect of the abnormal voltage transformer needs to be searched and eliminated, and the homologous nuclear phase test is carried out again.
6. The method for the nuclear phase of the high-voltage bus power supply of the power plant as claimed in claim 1, wherein the specific operation of the step 9) is as follows: disconnecting the working power supply incoming line switch (5) and the standby power supply incoming line switch (9), the standby power supply is provided with a common box bus (13), the working power supply is provided with a common box bus (2), the working power supply incoming line switch (5) and the standby power supply incoming line switch (9) are in a power-off state, then the grounding wire is hung, then the soft connection between the working power supply incoming line switch (5) and the working power supply is recovered, meanwhile, the soft connection between the standby power supply incoming line switch (9) and the standby power supply is provided with a common box bus (13), then the grounding wire is dismantled, and then the step 10 is turned to.
7. The method for generating power plant high voltage bus power nuclear phase according to claim 1, wherein step 11) further comprises the steps of:
1101) checking whether the secondary voltage amplitude of the working power supply inlet wire voltage transformer (4) is rated voltage divided by the transformation ratio of the working power supply inlet wire voltage transformer (4), whether the phase sequence is positive phase sequence and whether the zero sequence voltage is zero;
1102) whether the secondary voltage amplitude of the standby power supply inlet wire voltage transformer (11) is rated voltage divided by the transformation ratio of the standby power supply inlet wire voltage transformer (11) is checked, whether the phase sequence is positive phase sequence or not and whether the zero sequence voltage is zero or not are checked;
1103) checking whether the secondary voltage amplitude of the high-voltage bus voltage transformer (8) is the rated voltage divided by the transformation ratio of the high-voltage bus voltage transformer (8), whether the phase sequence is a positive phase sequence and whether the zero-sequence voltage is zero;
1104) checking whether secondary voltage frequency differences of a working power supply incoming line voltage transformer (4), a standby power supply incoming line voltage transformer (11) and a high-voltage bus voltage transformer (8) are zero, whether phase angle differences are smaller than 3 degrees, and whether voltage differences between the same phases are smaller than 5V;
1105) and (3) checking whether secondary voltage frequency differences of the working power supply incoming line voltage transformer (4), the standby power supply incoming line voltage transformer (11) and the high-voltage bus voltage transformer (8) read on the bus fast-cutting device (15) are zero, whether the phase angle difference is less than 3 degrees, and whether the voltage difference between the same phases is less than 5V.
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Families Citing this family (8)
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| CN110854925B (en) * | 2019-11-04 | 2021-06-08 | 中国能源建设集团华东电力试验研究院有限公司 | One-time voltage-on synchronous nuclear phase inspection system and inspection method for electrical system |
| CN111342464B (en) * | 2020-04-21 | 2021-12-10 | 西安热工研究院有限公司 | System and method for checking phases of single-bus system wiring mode unit |
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| CN111541276B (en) * | 2020-05-12 | 2021-09-07 | 西安热工研究院有限公司 | Generator synchronous phasing system and method |
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| CN113162040B (en) * | 2021-04-29 | 2023-06-20 | 西安热工研究院有限公司 | System and method for power supply non-voltage nuclear phase for high-voltage plant of power plant |
| CN114252710B (en) * | 2021-09-18 | 2023-08-18 | 华电电力科学研究院有限公司 | Method for unit grid-connected synchronous system homologous nuclear phase |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02232908A (en) * | 1989-03-06 | 1990-09-14 | Aichi Electric Co Ltd | Phase detection of traveling transformer and device therefor |
| JP2004170093A (en) * | 2002-11-18 | 2004-06-17 | Toshiba Corp | Testing device and testing method for electric equipment protection circuit |
| CN101943719A (en) * | 2010-09-09 | 2011-01-12 | 上海希明电气技术有限公司 | Shared-frequency asynchronous phase-checking method |
| CN102944762A (en) * | 2012-12-01 | 2013-02-27 | 新余钢铁集团有限公司 | Debugging method of phase sequences of loops at two sides of synchronization point before commissioning of generator set |
| CN202817885U (en) * | 2012-08-27 | 2013-03-20 | 新疆中泰化学（集团）股份有限公司 | Switching apparatus between dual supply systems for isolated network operation |
| CN104198832A (en) * | 2014-07-09 | 2014-12-10 | 中冶建工集团有限公司 | Comprehensive inspecting and testing method for high voltage power transformer and distribution substation |
| CN204028234U (en) * | 2014-08-07 | 2014-12-17 | 国网山东省电力公司日照供电公司 | The automatic nuclear phase monitoring device of a kind of online voltage |
| CN104505863A (en) * | 2014-11-21 | 2015-04-08 | 国家电网公司 | A method for determining and adjusting wireless phase detection |
| CN105588987A (en) * | 2016-01-29 | 2016-05-18 | 国网浙江省电力公司嘉兴供电公司 | Three-phase phase checking device applied to power distribution network 10 kV switch cabinets and phase checking method |
| CN206378526U (en) * | 2016-12-30 | 2017-08-04 | 国网天津市电力公司 | A kind of use A/D automatic electricity-testing and phase checking device |
| CN207096346U (en) * | 2017-08-24 | 2018-03-13 | 国家电网公司 | A kind of online phase checking device of high-tension switch cabinet |
-
2019
- 2019-08-28 CN CN201910804493.7A patent/CN110514911B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02232908A (en) * | 1989-03-06 | 1990-09-14 | Aichi Electric Co Ltd | Phase detection of traveling transformer and device therefor |
| JP2004170093A (en) * | 2002-11-18 | 2004-06-17 | Toshiba Corp | Testing device and testing method for electric equipment protection circuit |
| CN101943719A (en) * | 2010-09-09 | 2011-01-12 | 上海希明电气技术有限公司 | Shared-frequency asynchronous phase-checking method |
| CN202817885U (en) * | 2012-08-27 | 2013-03-20 | 新疆中泰化学（集团）股份有限公司 | Switching apparatus between dual supply systems for isolated network operation |
| CN102944762A (en) * | 2012-12-01 | 2013-02-27 | 新余钢铁集团有限公司 | Debugging method of phase sequences of loops at two sides of synchronization point before commissioning of generator set |
| CN104198832A (en) * | 2014-07-09 | 2014-12-10 | 中冶建工集团有限公司 | Comprehensive inspecting and testing method for high voltage power transformer and distribution substation |
| CN204028234U (en) * | 2014-08-07 | 2014-12-17 | 国网山东省电力公司日照供电公司 | The automatic nuclear phase monitoring device of a kind of online voltage |
| CN104505863A (en) * | 2014-11-21 | 2015-04-08 | 国家电网公司 | A method for determining and adjusting wireless phase detection |
| CN105588987A (en) * | 2016-01-29 | 2016-05-18 | 国网浙江省电力公司嘉兴供电公司 | Three-phase phase checking device applied to power distribution network 10 kV switch cabinets and phase checking method |
| CN206378526U (en) * | 2016-12-30 | 2017-08-04 | 国网天津市电力公司 | A kind of use A/D automatic electricity-testing and phase checking device |
| CN207096346U (en) * | 2017-08-24 | 2018-03-13 | 国家电网公司 | A kind of online phase checking device of high-tension switch cabinet |
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