CN102879708B - Quick polarity testing method of 110kV gas insulated switchgear (GIS) of transformer substation - Google Patents

Abstract

The invention discloses a method for quickly polarizing a 110kV substation GIS as follows: when checking and accepting, the equipment of the whole station is in the state before being put into operation. The busbar is in the suspended state, and the positive terminal of the light-on battery is connected to the three phases A, B, and C of the knife-gate busbar on the bus side of the 110KV#1 line interval, and the negative terminal of the light-on battery is grounded. The above conditions remain unchanged during work. The rapid polarity test method of the present invention only removes the grounding copper bar of a group of grounding knife switches once, which causes little damage to the grounding copper bar and the probability of remaining hidden dangers is also small. Compared with the method in the prior art, the rapid polarity test method of the present invention can reduce one staff who specializes in disassembling and assembling the grounding copper bar. Eliminates the danger of working at heights. It can judge whether the switch and knife switch are in reliable contact. Fixed use of DC power reduces the possibility of misoperation. No need for other auxiliary tools can reduce labor intensity.

Description

A Method of Fast Polarization in 110kV Substation GIS

technical field

The invention belongs to the technical field of substation acceptance and debugging, and relates to a GIS quick polarizing method, in particular to a 110kV substation GIS quick polarizing method.

Background technique

Regardless of any power equipment installed in the substation, as long as there are TA and TV, the polarity must be judged. Now it is professionally required that the secondary leads of TA and TV should be led out with positive polarity, and the primary busbar is the DC positive terminal, and the primary grounding point of the equipment is DC. The method of negative terminal is polarized, and the equipment combination installation method of the GIS system makes it possible to complete the equipment polarity test of the 110KV GIS system of the whole station by only removing the grounding copper bar of a group of grounding switches.

Before a large number of newly-built substations are put into operation, the second partial acceptance and commissioning stage generally has short time, tight tasks, fewer personnel, and rushing to the commissioning period, which makes it very hard for the second acceptance personnel to work overtime. In order not to delay the construction period, it is put into operation on time , it is necessary to reduce labor intensity and improve work efficiency.

The traditional method needs to remove the primary grounding point of a group of grounding switches of primary equipment at each interval, which will cause great damage to the grounding copper bar.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a quick polarizing method for GIS of a 110kV substation. This method only removes the grounding copper bar of a group of grounding switches of the primary equipment, which causes little damage to the grounding copper bar and leaves hidden dangers. The probability is also small, which can reduce labor intensity and improve work efficiency.

The purpose of the present invention is solved by the following technical solutions:

This kind of 110kV substation GIS quick polarity method is as follows: the whole station equipment is in the state before commissioning at the time of acceptance. At this time, choose to remove the grounding copper bar of the 110KV #1 line interval mother-side grounding switch (ES11) and keep the busbar in a suspended state. , and connect the positive terminal of the light-on battery to the three phases A, B, and C of the 110KV #1 line interval mother-side ground knife switch busbar, and ground the negative terminal of the light-on battery. The above conditions remain unchanged during work, and the following tests are carried out respectively :

1) When testing the 110KV #1 line interval TA polarity, the primary circuit connection method is as follows:

Connect the battery positive, ES11 #1 line interval mother side grounding switch (A, B, C) phase busbar, CB11 #1 line interval switch, ES12 #1 line interval switch, line side isolation switch indirect grounding switch The switch, the ground point of the GIS shell and the negative connection of the light battery, and the rest of the switch are in the open state;

2) When testing the TV polarity of the 110KV #1 line interval voltage transformer TV, the primary circuit connection method is as follows:

Turn on the light battery positive, ES11 #1 line interval mother side grounding knife switch (YH installation) phase busbar, CB11 #1 line interval switch, DS12 #1 line interval line side isolation knife switch, GIS shell grounding point and light on The battery is negatively connected, the other switches are in the split state and the grounding wire is not connected to the line, and the line isolation switch on the opposite side of the line and the line are quickly in the split position, and the ES11 #1 line is separated from the female side grounding switch and DS12. Interlock between #1 line interval switch and line side isolating switch;

3) When testing the 110KV #3 line interval TA polarity, the primary circuit connection method is as follows:

Connect the light battery positive, ES11 #1 line interval bus side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus side isolation switch, M1 I section bus, DS31 #3 line interval bus Side isolating switch, CB31 #3 line interval switch, ES32 #3 line interval switch, line side isolating knife indirect grounding switch, GIS shell grounding point and light battery negative connection, other switches are in the open state, and ES11 is released The mutual interlocking between the bus-side grounding knife switch of #1 line bay and the DS11 #1 line bay mother-side isolation knife switch, and the indirect grounding of the DS31 #3 line bay busbar isolation knife switch and ES32 #3 line bay switch and line-side isolation knife switch The mutual interlocking of the knife switch;

4) When testing the TV polarity of the 110KV #3 line interval voltage transformer, the primary circuit connection method is as follows:

Turn on the light battery positive, ES11 #1 line interval bus side grounding switch (TV installation) phase busbar, DS11 #1 line interval bus side isolation switch, M1 I-section busbar, DS31 #3 line interval bus side isolation switch switch, CB31 #3 line interval switch, DS32 #3 line interval line side isolation knife switch, GIS shell ground point and light battery negative connection, the other knife switches are in the split state and the line is not connected to the ground wire and the line is connected to the The side line isolation knife and the line fast ground knife are in position, and the mutual interlocking of the ES11 #1 line bay mother-side grounding knife switch and the DS11 #1 line bay mother-side isolation knife switch is released.

Further, when testing the polarity of the 110KVI mother TV interval, the primary loop connection method is as follows:

Connect the light battery positive, ES11 #1 line interval bus-side grounding knife switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation knife switch, M1 I-section busbar, ES41 I-bus TV interval busbar The side isolation switch, the grounding point of the GIS shell, and the negative connection of the light battery, and the other switches are in the open state, and the interconnection between the ES11 #1 line bay mother-side grounding switch and the DS11 #1 line bay mother-side isolation switch is released. Lock.

Further, when testing the polarity of 1101 interval TA, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line bay mother-side grounding knife switch (A, B, C) phase busbar, DS11 #1 line bay mother-side isolation knife switch, M1 I-section busbar, DS21 1# main transformer bay Bus isolation switch, CB21 1# main transformer interval switch, ES22 1# main transformer interval switch, transformer side isolation switch indirect ground switch, GIS shell ground point and light battery negative connection, and other switches are in the split state, And release the mutual interlocking between the ES11 #1 line bay mother-side grounding switch and the DS11 #1 line bay mother-side isolation switch, and release the DS21 1# main transformer bay mother-side isolation switch and ES22 1# main transformer bay switch, transformer Interlocking of side isolation switch and indirect ground switch.

Further, when testing the polarity of the subsection interval TA, the primary loop connection method is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Isolation switch, CB51 segmental interval switch, ES52 segmental interval II female grounding switch, GIS shell grounding point and light battery negative connection, the rest of the switches are in the split state, and the ES11 #1 line interval female side grounding switch is released The mutual interlocking between the gate and the DS11 #1 line interval mother-side isolation switch, and the mutual interlocking between the DS51 section interval I mother isolation switch and the ES52 section interval II female grounding switch are released.

Further, when testing the polarity of the 110KVII mother TV interval, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Side isolation switch, CB51 segmental interval switch, DS52 segmental interval II bus-side isolation switch, M2 II busbar, DS71 II female TV interval mother-side isolation switch, GIS shell grounding point and light battery negative connection, the rest The switches are all in the open state, and the interlocking of the ES11 #1 line bay mother-side grounding switch and the DS11 #1 line bay mother-side isolation switch is released.

Further, when testing the 110KV #2 line interval TA polarity, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Side isolation switch, CB51 segmental interval switch, DS52 segmental interval II bus-side isolation switch, M2 II-section busbar, DS81 #2 line interval bus-side isolation switch, CB81 #2 line interval switch, ES82 #2 line interval The switch and the line side isolation switch are connected indirectly to the ground switch, the ground point of the GIS shell, and the negative connection of the light battery. The mutual interlocking of the side isolating switch, the mutual interlocking of the DS81 #2 line interval bus isolation switch and the ES82 #2 line interval switch, and the indirect grounding switch of the line side isolating switch are released.

Further, when testing the TV polarity of the 110KV #2 line interval voltage transformer, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Side isolation switch, CB51 segmental interval switch, DS52 segmental interval II bus-side isolation switch, M2 II-section busbar, DS81 #2 line interval bus-side isolation switch, CB81 #2 line interval switch, DS82 2# line interval The line-side isolation switch, the ground point of the GIS shell, and the negative connection of the light-on battery; the other switches are in the split state and the ground wire is not connected to the line, and the line isolation switch on the opposite side of the line and the line are quickly in the split position. And release the mutual interlocking of the ES11 #1 line bay mother-side grounding switch and the DS11 #1 line bay mother-side isolation switch.

Further, when testing the 110KV #4 line interval TA polarity, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Side isolation switch, CB51 segmental interval switch, DS52 segmental interval II bus-side isolation switch, M2 II-section busbar, DS91 #4 line interval bus-side isolation switch, CB91 #4 line interval switch, ES92 #4 line interval The switch, the line-side isolation switch, the indirect ground switch, the ground point of the GIS shell, and the negative connection of the light battery; the rest of the switches are in the split state, and the ES11 #1 line interval mother-side ground switch and the DS11 #1 line interval mother are released. The side isolation switches are interlocked with each other, and the mutual interlocking of the ES92 grounding switch between the DS91 #4 line bay mother-side isolation switch and the switch and line side isolation switches is released.

Further, when testing the TV polarity of the 110KV #4 line interval voltage transformer, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Side isolation switch, CB51 segmental interval switch, DS52 segmental interval II bus-side isolation switch, M2 II-section busbar, DS91 #4 line interval bus-side isolation switch, CB91 #4 line interval switch, DS92 #4 line interval The line side isolation switch, the ground point of the GIS shell and the negative connection of the light battery; the other switches are in the split state and the ground wire is not connected to the line, and the line isolation switch on the opposite side of the line and the line fast switch are in the split position, and Release the mutual interlocking of the ES11 #1 line bay mother-side grounding switch and the DS11 #1 line bay mother-side isolation switch.

Further, when testing the polarity of 1102 TA, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Side isolation switch, CB51 segmental interval switch, DS52 segmental interval II bus-side isolation switch, M2 II-section busbar, DS61 2# main transformer interval mother-side isolation switch, CB61 2# main transformer interval switch, ES62 2# The main transformer interval switch, the indirect grounding switch of the transformer side isolation switch, the grounding point of the GIS shell, and the negative connection of the light battery; the other switches are in the split state, and the ES11 #1 line interval mother-side grounding switch and DS11 #1 are released Interlock the line bay bus-side isolating switch, and release the interlock of the DS61 2# main transformer bay bus-side isolating switch and the ES62 2# main transformer bay switch, transformer-side isolating switch and indirect grounding switch.

Compared with the prior art, the present invention has the following beneficial effects:

1. The method of the prior art needs to remove the primary grounding point of a group of grounding switches of a device at each interval, causing great damage to the grounding copper bar. The rapid polarity test method of the present invention only removes the grounding of a group of grounding switches of a device The copper bar has less damage to the grounding copper bar, and the probability of remaining hidden dangers is also small.

2. Compared with the method in the prior art, the rapid polarity test method of the present invention can reduce one staff who is specialized in disassembling and assembling the grounding copper bar.

3. The present invention eliminates the danger of working at heights.

4. The present invention can judge whether the switch and the knife switch are in reliable contact.

5. The fixed use of the DC power supply in the present invention can reduce the possibility of misoperation.

6. The present invention does not require other auxiliary tools and can reduce labor intensity.

Description of drawings

Figure 1 is a connection diagram of the primary circuit when testing the polarity of the 110KV #1 line interval TA;

Figure 2 is a connection diagram of the primary circuit when testing the TV polarity of the 110KV #1 line interval voltage transformer;

Figure 3 is a connection diagram of the primary circuit when testing the polarity of the 110KV #3 line interval TA;

Figure 4 is a connection diagram of the primary circuit when testing the TV polarity of the 110KV #3 line interval voltage transformer;

Figure 5 is a connection diagram of the primary circuit when testing the polarity of the 110KVI female TV interval;

Figure 6 is a connection diagram of the primary circuit when testing the polarity of the interval TA of 1101;

Figure 7 is a connection diagram of the primary circuit when testing the polarity of the subsection interval TA;

Figure 8 is a connection diagram of the primary circuit when testing the polarity of the 110KVII mother TV interval;

Figure 9 is a connection diagram of the primary circuit when testing the polarity of the 110KV #2 line interval TA;

Figure 10 is a connection diagram of the primary circuit when testing the TV polarity of the 110KV #2 line interval voltage transformer;

Figure 11 is a connection diagram of the primary circuit when testing the polarity of the 110KV #4 line interval TA;

Figure 12 is a connection diagram of the primary circuit when testing the TV polarity of the 110KV #4 line interval voltage transformer;

Figure 13 is a connection diagram of the primary circuit when testing the polarity of 1102 TA.

Detailed ways

Regardless of any power equipment installed in the substation, as long as there are TA and TV, the polarity must be judged. Now it is professionally required that the secondary leads of TA and TV should be led out with positive polarity, and the primary busbar is the DC positive terminal, and the primary grounding point of the equipment is DC. The method of negative terminal is polarized, and the equipment combination installation method of the GIS system makes it possible to complete the equipment polarity test of the 110KV GIS system of the whole station by only removing the grounding copper bar of a group of grounding switches.

During acceptance, all station equipment is in the state before commissioning. At this time, you can choose to remove the grounding copper bar of the 110KV #1 line interval mother-side grounding knife switch (ES11) and keep the busbar in a suspended state, and connect the positive terminals of the lights to the battery respectively. (ES11) 110KV #1 line is separated from the three phases A, B, and C of the busbar on the mother side, and the negative terminal of the light-on battery is grounded. The above conditions remain unchanged during work, and the relevant switches and switches are closed at the same time. . Below in conjunction with accompanying drawing, each minor test method of the present invention is described in further detail:

See Figure 1: When testing the polarity of 110KV #1 line interval TA, the primary circuit connection method is as follows:

Connect the battery positive, ES11 #1 line interval mother side grounding switch (A, B, C) phase busbar, CB11 #1 line interval switch, ES12 #1 line interval switch, line side isolation switch indirect grounding switch The switch, the ground point of the GIS shell and the negative connection of the light battery, and the rest of the switch are in the open state.

See Figure 2: When testing the TV polarity of the 110KV #1 line interval voltage transformer, the primary circuit connection method is as follows:

Turn on the light battery positive, ES11 #1 line interval mother side grounding knife switch (YH installation) phase busbar, CB11 #1 line interval switch, DS12 #1 line interval line side isolation knife switch, GIS shell grounding point and light on The battery is negatively connected, the other switches are in the split state and the grounding wire is not connected to the line, and the line isolation switch on the opposite side of the line and the line are quickly in the split position, and the ES11 #1 line is separated from the female side grounding switch and DS12. Interlock between #1 line interval switch and line side isolating switch.

See Figure 3: When testing the polarity of the 110KV #3 line interval TA, the primary circuit connection method is as follows:

Connect the light battery positive, ES11 #1 line interval bus side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus side isolation switch, M1 I section bus, DS31 #3 line interval bus Side isolating switch, CB31 #3 line interval switch, ES32 #3 line interval switch, line side isolating knife indirect grounding switch, GIS shell grounding point and light battery negative connection, other switches are in the open state, and ES11 is released The mutual interlocking between the bus-side grounding knife switch of #1 line bay and the DS11 #1 line bay mother-side isolation knife switch, and the indirect grounding of the DS31 #3 line bay busbar isolation knife switch and ES32 #3 line bay switch and line-side isolation knife switch The mutual interlocking of the knife switch;

See Figure 4: When testing the TV polarity of the 110KV #3 line interval voltage transformer, the primary circuit connection method is as follows:

Connect the light battery positive, ES11 #1 line bay mother-side grounding switch (TV installation) phase busbar, DS11 #1 line bay mother-side isolation switch, M1I section bus, DS31 #3 line bay mother-side isolation switch , CB31 #3 line interval switch, DS32 #3 line interval line side isolation knife switch, GIS shell ground point and light battery negative connection, the other knife switches are in the split state and the line is not connected to the ground wire and the line is on the opposite side The line isolation knife and the line fast ground knife are in position, and the mutual interlocking of the ES11 #1 line bay mother-side grounding knife switch and the DS11 #1 line bay mother-side isolation knife switch is released.

See Figure 5: When testing the polarity of the 110KVI female TV interval, the primary circuit connection method is as follows:

Connect the light battery positive, ES11 #1 line interval bus-side grounding knife switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation knife switch, M1 I-section busbar, ES41 I-bus TV interval busbar The side isolation switch, the grounding point of the GIS shell, and the negative connection of the light battery, and the other switches are in the open state, and the interconnection between the ES11 #1 line bay mother-side grounding switch and the DS11 #1 line bay mother-side isolation switch is released. Lock.

See Figure 6: When testing the 1101 interval TA polarity, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line bay mother-side grounding knife switch (A, B, C) phase busbar, DS11 #1 line bay mother-side isolation knife switch, M1 I-section busbar, DS21 1# main transformer bay Bus isolation switch, CB21 1# main transformer interval switch, ES22 1# main transformer interval switch, transformer side isolation switch indirect ground switch, GIS shell ground point and light battery negative connection, and other switches are in the split state, And release the mutual interlocking between the ES11 #1 line bay mother-side grounding switch and the DS11 #1 line bay mother-side isolation switch, and release the DS21 1# main transformer bay mother-side isolation switch and ES22 1# main transformer bay switch, transformer Interlocking of side isolation switch and indirect ground switch.

See Figure 7: When testing the polarity of the subsection interval TA, the connection method of the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Isolation switch, CB51 segmental interval switch, ES52 segmental interval II female grounding switch, GIS shell grounding point and light battery negative connection, the rest of the switches are in the split state, and the ES11 #1 line interval female side grounding switch is released The mutual interlocking between the gate and the DS11 #1 line interval mother-side isolation switch, and the mutual interlocking between the DS51 section interval I mother isolation switch and the ES52 section interval II female grounding switch are released.

See Figure 8: When testing the polarity of the 110KVII mother TV interval, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Side isolation switch, CB51 segmental interval switch, DS52 segmental interval II bus-side isolation switch, M2 II busbar, DS71 II female TV interval mother-side isolation switch, GIS shell grounding point and light battery negative connection, the rest The switches are all in the open state, and the interlocking of the ES11 #1 line bay mother-side grounding switch and the DS11 #1 line bay mother-side isolation switch is released.

See Figure 9: When testing the 110KV #2 line interval TA polarity, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Side isolation switch, CB51 segmental interval switch, DS52 segmental interval II bus-side isolation switch, M2 II-section busbar, DS81 #2 line interval bus-side isolation switch, CB81 #2 line interval switch, ES82 #2 line interval The switch and the line side isolation switch are connected indirectly to the ground switch, the ground point of the GIS shell, and the negative connection of the light battery. The mutual interlocking of the side isolating switch, the mutual interlocking of the DS81 #2 line interval bus isolation switch and the ES82 #2 line interval switch, and the indirect grounding switch of the line side isolating switch are released.

See Figure 10: When testing the TV polarity of the 110KV #2 line interval voltage transformer, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Side isolation switch, CB51 segmental interval switch, DS52 segmental interval II bus-side isolation switch, M2 II-section busbar, DS81 #2 line interval bus-side isolation switch, CB81 #2 line interval switch, DS82 2# line interval The line-side isolation switch, the ground point of the GIS shell, and the negative connection of the light-on battery; the other switches are in the split state and the ground wire is not connected to the line, and the line isolation switch on the opposite side of the line and the line are quickly in the split position. And release the mutual interlocking of the ES11 #1 line bay mother-side grounding switch and the DS11 #1 line bay mother-side isolation switch.

See Figure 11: When testing the 110KV #4 line interval TA polarity, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Side isolation switch, CB51 segmental interval switch, DS52 segmental interval II bus-side isolation switch, M2 II-section busbar, DS91 #4 line interval bus-side isolation switch, CB91 #4 line interval switch, ES92 #4 line interval The switch, the line-side isolation switch, the indirect ground switch, the ground point of the GIS shell, and the negative connection of the light battery; the rest of the switches are in the split state, and the ES11 #1 line interval mother-side ground switch and the DS11 #1 line interval mother are released. The side isolation switches are interlocked with each other, and the mutual interlocking of the ES92 grounding switch between the DS91 #4 line bay mother-side isolation switch and the switch and line side isolation switches is released.

See Figure 12: When testing the TV polarity of the 110KV #4 line interval voltage transformer, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Side isolation switch, CB51 segmental interval switch, DS52 segmental interval II bus-side isolation switch, M2 II-section busbar, DS91 #4 line interval bus-side isolation switch, CB91 #4 line interval switch, DS92 #4 line interval The line side isolation switch, the ground point of the GIS shell and the negative connection of the light battery; the other switches are in the split state and the ground wire is not connected to the line, and the line isolation switch on the opposite side of the line and the line fast switch are in the split position, and Release the mutual interlocking of the ES11 #1 line bay mother-side grounding switch and the DS11 #1 line bay mother-side isolation switch.

See Figure 13: When testing the polarity of 1102TA, the primary circuit is as follows:

Connect the light battery positive, ES11 #1 line interval mother-side grounding switch (A, B, C) phase busbar, DS11 #1 line interval bus-side isolation switch, M1 section I busbar, DS51 section interval I busbar Side isolation switch, CB51 segmental interval switch, DS52 segmental interval II bus-side isolation switch, M2 II-section busbar, DS61 2# main transformer interval mother-side isolation switch, CB61 2# main transformer interval switch, ES62 2# The main transformer interval switch, the indirect grounding switch of the transformer side isolation switch, the grounding point of the GIS shell, and the negative connection of the light battery; the other switches are in the split state, and the ES11 #1 line interval mother-side grounding switch and DS11 #1 are released Interlock the line bay bus-side isolating switch, and release the interlock of the DS61 2# main transformer bay bus-side isolating switch and the ES62 2# main transformer bay switch, transformer-side isolating switch and indirect grounding switch.

In summary, the method of the present invention is completely consistent with the result of the traditional polarity test method compared with the rapid polarity test method; compared with the traditional polarity test method, the rapid polarity test method of the present invention only needs three people to compare. Two people, saving 33% of manpower; Compared with the traditional polarity testing method that takes 2 working days, the rapid polarity testing method of the present invention only needs 0.5 working days, saving 75% of working days; Compared with removing the grounding points of 7 groups of grounding blades, the quick polarity test method of the present invention only needs to remove the grounding point of 1 group of grounding blades.

After simple calculation, two 50MVA transformers are used to supply power 2 days in advance, power factor: 0.85, load: 80%; each substation can save a total of 53000*0.85*0.8*24*0.49=847,660 yuan; this method has It has been applied in Shajing Village, Haichi Substation, Jingzhao Substation, Administrative Center Substation, Lingyun Substation, Xinghui Substation, and Shapo Substation in Xi'an, all of which have achieved very good results.

After implementing the method of the present invention, the commissioning and acceptance time of the newly-built substation can be shortened by more than 2 days as a whole, which provides a strong guarantee for the planned commissioning of the substation, reduces the probability that the newly-built substation cannot be put into operation as planned, and reduces the economic cost of the power supply enterprise. Loss, customers using electricity can supply electricity in time, and establish a good social image of power supply enterprises.

Claims (10)

1. a 110kV transformer station GIS beats polarity method fast, it is characterized in that, during examination full station equipment be all in and put into operation before state, at this moment select remove female side grounding switch (ES11) grounding copper bar of 110KV#1 line segregation and keep busbar vacant state, and connect 110KV#1 line segregation female side grounding switch busbar A, B, C three-phase respectively with logical lamp anode end, with logical lamp battery cathode end ground connection, in work, above state remains unchanged, and carries out following test respectively:

1) when the primary circuit method of attachment of test 110KV#1 line segregation TA polarity chron is as follows:

To lead to successively lamp anode end, 110KV#1 line segregation female side grounding switch busbar A, B, C three-phase, CB11#1 line segregation switch, ES12#1 line segregation switch, line side isolation switch indirectly disconnecting link, GIS earthing of casing point be connected with logical lamp battery cathode end, all the other disconnecting links are all in a point state;

2) when the primary circuit method of attachment of test 110KV#1 line segregation voltage transformer (VT) TV polarity chron is as follows:

Lamp anode end will be led to successively, 110KV#1 line segregation female side grounding switch busbar A, B, C three-phase, CB11#1 line segregation switch, DS12#1 line segregation switch, GIS earthing of casing point be connected with logical lamp battery cathode end, all the other disconnecting links be all in point state and circuit does not mount ground wire this circuit offside circuit isolation knife and circuit rapidly disconnecting link in a point position, and remove the interlocking between 110KV#1 line segregation mother's side grounding switch and DS12#1 line segregation switch, side line road isolation knife;

3) when the primary circuit method of attachment of test 110KV#3 line segregation TA polarity chron is as follows:

Lamp anode end will be led to successively, the female side grounding switch busbar A of 110KV#1 line segregation, B, C three-phase, DS11#1 line segregation female side isolation switch, M1 I section bus, DS31#3 line segregation bus isolation switch, CB31#3 line segregation switch, ES32#3 line segregation switch, line side isolation switch disconnecting link indirectly, GIS earthing of casing point is connected with logical lamp battery cathode end, all the other disconnecting links are all in a point state, and remove the reciprocal interlocking of the female side grounding switch of ES11#1 line segregation and DS11#1 line segregation female side isolation switch, remove DS31#3 line segregation bus isolation switch and ES32#3 line segregation switch, the reciprocal interlocking of line side isolation switch disconnecting link indirectly,

4) when the primary circuit method of attachment of test 110KV#3 line segregation voltage transformer (VT) TV polarity chron is as follows:

Lamp anode end will be led to successively, the female side grounding switch busbar A of 110KV#1 line segregation, B, C three-phase, DS11#1 line segregation female side isolation switch, M1I section bus, DS31#3 line segregation bus isolation switch, CB31#3 line segregation switch, DS32#3 line segregation line side isolation switch, GIS earthing of casing point and logical lamp battery cathode end connect, all the other disconnecting links be all in point state and circuit does not mount ground wire this circuit offside circuit isolation switch and circuit rapidly cutter in a point position, and remove the reciprocal interlocking of the female side grounding switch of ES11#1 line segregation and DS11#1 line segregation female side isolation switch.

2. 110kV transformer station GIS according to claim 1 beats polarity method fast, it is characterized in that, when the female TV interval polarity chron primary circuit method of attachment of test 110KVI is as follows:

Lamp anode end, 110KV#1 line segregation female side grounding switch A, B, C three-phase, DS11#1 line segregation female side isolation switch, M1 I section bus, female side, the female TV interval of ES41I isolation switch, GIS earthing of casing point and logical lamp battery cathode end will be led to successively connect, all the other disconnecting links are all in a point state, and remove the reciprocal interlocking of the female side grounding switch of 110KV#1 line segregation and DS11#1 line segregation female side isolation switch.

3. 110kV transformer station GIS according to claim 1 beats polarity method fast, it is characterized in that, when test 1101 interval T A polarity, primary circuit is as follows:

Lamp anode end will be led to successively, the female side grounding switch A of 110KV#1 line segregation, B, C three-phase, DS11#1 line segregation female side isolation switch, M1 I section bus, female side, DS211# main transformer interval isolation switch, CB21 1# main transformer interval switch, ES22 1# main transformer interval switch, become side isolation switch disconnecting link indirectly, GIS earthing of casing point and logical lamp battery cathode end connect, all the other disconnecting links are all in a point state, and remove the reciprocal interlocking of the female side grounding switch of ES11#1 line segregation and DS11#1 line segregation bus isolation switch, remove the female side isolation switch in DS21 1# main transformer interval and ES22 1# main transformer interval switch, become the interlocking of side isolation switch disconnecting link indirectly.

4. 110kV transformer station GIS according to claim 1 beats polarity method fast, it is characterized in that, when the primary circuit method of attachment of test section gap TA polarity chron is as follows:

Lamp anode end will be led to successively, the female side grounding switch busbar A of 110KV#1 line segregation, B, C three-phase, DS11#1 line segregation female side isolation switch, M1 I section bus, the female isolation switch of DS51 section gap I, CB51 section gap switch, the female grounding switch of ES52 section gap II, GIS earthing of casing point and logical lamp battery cathode end connect, all the other disconnecting links are all in a point state, and remove the reciprocal interlocking of the female side grounding switch of 110KV#1 line segregation and DS11#1 line segregation female side isolation switch, remove the reciprocal interlocking of the female isolation switch of DS51 section gap I and the female grounding switch of ES52 section gap II.

5. 110kV transformer station GIS according to claim 1 beats polarity method fast, it is characterized in that, when the female polarity chron primary circuit, TV interval of test 110KVII is as follows:

Lamp anode end, 110KV#1 line segregation female side grounding switch busbar A, B, C three-phase, DS11#1 line segregation female side isolation switch, M1 I section bus, DS51 section gap I female side isolation switch, CB51 section gap switch, DS52 section gap II female side isolation switch, M2 II section bus, female side, the female TV interval of DS71 II isolation switch, GIS earthing of casing point and logical lamp battery cathode end will be led to successively connect, all the other disconnecting links are all in a point state, and remove the female side grounding switch of 110KV#1 line segregation and DS11#1 line segregation female side isolation knife reciprocal interlocking.

6. 110kV transformer station GIS according to claim 1 beats polarity method fast, it is characterized in that, when test 110KV#2 line segregation TA polarity chron primary circuit is as follows:

Lamp anode end will be led to successively, the female side grounding switch busbar A of 110KV#1 line segregation, B, C three-phase, DS11#1 line segregation female side isolation switch, M1 I section bus, DS51 section gap I female side isolation switch, CB51 section gap switch, DS52 section gap II female side isolation switch, M2 II section bus, CB81#2 line segregation switch, DS81#2 line segregation bus isolation switch, ES82#2 line segregation switch and line side isolation switch disconnecting link indirectly, GIS earthing of casing point and logical lamp battery cathode end connect, all the other disconnecting links are all in a point state, and remove the reciprocal interlocking of the female side grounding switch of 110KV#1 line segregation and DS11#1 line segregation female side isolation switch, remove the female side isolation switch of DS81#2 line segregation and ES82#2 line segregation switch, the reciprocal interlocking of line side isolation switch disconnecting link indirectly.

7. 110kV transformer station GIS according to claim 1 beats polarity method fast, it is characterized in that, when test 110KV#2 line segregation voltage transformer (VT) TV polarity chron primary circuit is as follows:

Lamp anode end will be led to successively, the female side grounding switch busbar A of 110KV#1 line segregation, B, C three-phase, DS11#1 line segregation female side isolation switch, M1 I section bus, DS51 section gap I female side isolation switch, CB51 section gap switch, DS52 section gap II female side isolation switch, M2 II section bus, DS81#2 line segregation female side isolation switch, CB81#2 line segregation switch, DS82 2# line segregation line side isolation switch, GIS earthing of casing point and logical lamp battery cathode end connect, all the other disconnecting links be all in point state and circuit does not mount ground wire this circuit offside circuit isolation switch and circuit rapidly disconnecting link in a point position, and remove the reciprocal interlocking of the female side grounding switch of 110KV#1 line segregation and DS11#1 line segregation mother side isolation switch.

8. 110kV transformer station GIS according to claim 1 beats polarity method fast, it is characterized in that, when test 110KV#4 line segregation TA polarity chron primary circuit is as follows:

Lamp anode end will be led to successively, the female side grounding switch busbar A of 110KV#1 line segregation, B, C three-phase, DS11#1 line segregation female side isolation switch, M1 I section bus, DS51 section gap I female side isolation switch, CB51 section gap switch, DS52 section gap II female side isolation switch, M2 II section bus, DS91#4 line segregation female side isolation switch, CB91#4 line segregation switch, ES92#4 line segregation switch, line side isolation switch disconnecting link indirectly, GIS earthing of casing point and logical lamp battery cathode end connect, all the other disconnecting links are all in a point state, and remove the female side grounding switch of 110KV#1 line segregation and DS11#1 line segregation female side isolation switch reciprocal interlocking, remove the reciprocal interlocking of DS91#4 line segregation mother's side isolation switch and CB91#4 line segregation switch, ES92#4 line segregation switch, line side isolation switch disconnecting link indirectly.

9. 110kV transformer station GIS according to claim 1 beats polarity method fast, it is characterized in that, when test 110KV#4 line segregation voltage transformer (VT) TV polarity chron primary circuit is as follows:

Lamp anode end will be led to successively, the female side grounding switch busbar A of 110KV#1 line segregation, B, C three-phase, DS11#1 line segregation female side isolation switch, M1 I section bus, DS51 section gap I female side isolation switch, CB51 section gap switch, DS52 section gap II female side isolation switch, M2 II section bus, DS91#4 line segregation female side isolation switch, CB91#4 line segregation switch, DS92#4 line segregation line side isolation switch, GIS earthing of casing point and logical lamp battery cathode end connect, all the other disconnecting links be all in point state and circuit does not mount ground wire this circuit offside circuit isolation knife and circuit rapidly disconnecting link in a point position, and remove the female side grounding switch of 110KV#1 line segregation and DS11#1 line segregation mother side isolation switch reciprocal interlocking.

10. 110kV transformer station GIS according to claim 1 beats polarity method fast, it is characterized in that, when test 1102TA polarity chron primary circuit is as follows:

Lamp anode end will be led to successively, the female side grounding switch busbar A of 110KV#1 line segregation, B, C three-phase, DS11#1 line segregation female side isolation switch, M1 I section bus, DS51 section gap I female side isolation switch, CB51 section gap switch, DS52 section gap II female side isolation switch, M2 II section bus, female side, DS61 2# main transformer interval isolation switch, CB61 2# main transformer interval switch, ES62 2# main transformer interval switch, become side isolation switch disconnecting link indirectly, GIS earthing of casing point and logical lamp battery cathode end connect, all the other disconnecting links are all in a point state, and remove the female side grounding switch of 110KV#1 line segregation and DS11#1 line segregation female side isolation switch reciprocal interlocking, remove DS61 2# main transformer interval mother's side isolation switch and ES62 2# main transformer interval switch, become the interlocking of side isolation switch disconnecting link indirectly.