CN212060462U

CN212060462U - Complete set of electrical starting test system for power plant cross service

Info

Publication number: CN212060462U
Application number: CN202020541763.8U
Authority: CN
Inventors: 周亚群; 张钢; 都劲松; 曹浩军; 吕尚霖; 田甜; 李静
Original assignee: Xian Thermal Power Research Institute Co Ltd
Current assignee: Xian Thermal Power Research Institute Co Ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-12-01
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a complete set of electric starting test system for power plant cross plants, which comprises a generator No. 1, a generator No. 1 outlet switch unit, a main transformer No. 1, a high-voltage plant transformer No. 1, a generator No. 2 outlet switch unit, a main transformer No. 2, a high-voltage plant transformer No. 2, a unit No. 1 10kV 1A section bus incoming switch, a unit No. 1 10kV 1A section bus contact switch, a unit No. 2 10kV 2A section bus contact switch, a unit No. 2 kV 2A section bus incoming switch, a unit No. 1 10kV 1B section bus incoming switch, a unit No. 1 kV 1B section bus contact switch, a unit No. 2 kV 2B section bus contact switch and a unit No. 2 kV 2B section bus incoming switch, when the system can effectively solve the transformer for the high-voltage plant of the unit provides the plant power supply, the short-circuit test of the high-voltage side of the main transformer and the short-circuit test of the high-voltage station transformer can not be carried out.

Description

Complete set of electrical starting test system for power plant cross service

Technical Field

The utility model belongs to the technical field of electric power debugging and electric power test, a power plant alternately is a complete set of start test system of factory electricity is related to.

Background

According to GB 50660-. For the unit of the type, a high-voltage station power supply is generally supplied by a main transformer in a reverse mode, generator outlet switch units are arranged at generator outlets, and the generator outlet switches are in a switching-off state during debugging and overhauling of the unit.

Before the generator set is firstly connected to the power grid, an electrical complete set starting test needs to be carried out, for the generator set which is not provided with a high-voltage station transformer and is provided with station power by a main transformer, when the station power is provided by the high-voltage station transformer of the generator set, the main transformer and the high-voltage station transformer are in electrified operation states, so that the main transformer high-voltage side short-circuit test and the high-voltage station transformer short-circuit test cannot be carried out in the electrical complete set starting test process, and the difficulty in realizing the synchronous phasing test is high, so that the finding of a power plant cross station electrical complete set starting test system has important significance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a power plant alternately mill with a whole set of start test system of electricity, this system can effectively solve this unit high pressure mill and provide the mill with the transformer when using the power, can't carry out the main transformer high pressure side short circuit test and the transformer short circuit test's for the high pressure mill problem.

In order to achieve the above object, the power plant cross plant electric whole set start test system comprises a generator 1, a generator 1 outlet switch unit, a main transformer 1, a transformer for high-voltage plant 1, a generator 2 outlet switch unit, a main transformer 2, a transformer for high-voltage plant 2, a unit 10kV 1A section bus incoming switch 1, a unit 10kV 1A section bus interconnection switch 1, a unit 10kV 2A section bus interconnection switch 2, a unit 10kV 2A section bus incoming switch 2, a unit 10kV 1B section bus incoming switch 1, a unit 10kV 1B section bus interconnection switch 1, a unit 10kV 2B section bus interconnection switch 2 and a unit 10kV 2B section bus incoming switch 2;

the output end of the No. 1 generator is connected with the input end of the No. 1 main transformer and the high-voltage side of the No. 1 high-voltage service transformer 4 through a No. 1 generator outlet switch unit;

the output end of the No. 2 generator is connected with the high-voltage sides of the No. 2 main transformer and the No. 2 high-voltage station transformer through the No. 2 generator outlet switch unit;

one end of the low-voltage side of the No. 1 high-voltage station transformer is connected with one end of the low-voltage side of the No. 2 high-voltage station transformer through a No. 1 unit 10kV 1A section bus incoming line switch, a No. 1 unit 10kV 1A section bus interconnection switch, a No. 2 unit 10kV 2A section bus interconnection switch and a No. 2 unit 10kV 2A section bus incoming line switch; the other end of the low-voltage side of the No. 1 high-voltage station transformer is connected with the other end of the low-voltage side of the No. 2 high-voltage station transformer through a No. 1 unit 10kV 1B section bus incoming line switch, a No. 1 unit 10kV 1B section bus interconnection switch, a No. 2 unit 10kV 2B section bus interconnection switch and a No. 2 unit 10kV 2B section bus incoming line switch.

Still include unit 10kV 1A section generating line and unit 10kV 2A section generating line No. 1, the low pressure side of transformer is used in 1 high-voltage plant through unit 10kV 1A section generating line service switch No. 1, unit 10kV 1A section generating line contact switch No. 1, unit 10kV 2A section generating line contact switch No. 2 and unit 10kV 2A section generating line service switch No. 2 are connected with the low pressure side of transformer is used in the high-voltage plant.

Still include unit 10kV 1B section generating line and unit 2 kV 2B section generating line No. 1, wherein, the low pressure side of transformer is used in 1 high-voltage plant through unit 10kV 1B section generating line service switch No. 1, unit 10kV 1B section generating line contact switch No. 1, unit 10kV 2B section generating line contact switch No. 2 and unit 10kV 2B section generating line service switch No. 2 are connected with the low pressure side of transformer is used in the high-voltage plant No. 2.

The No. 1 high-voltage station transformer and the No. 2 high-voltage station transformer are both on-load tap transformers.

The utility model discloses following beneficial effect has:

the power plant alternately complete set of start-up test system of factory electrical when concrete operation, in the complete set of start-up test process of electrical before the unit is incorporated into the power networks for the first time, stop this unit main transformer and high-pressure factory transformer, provide the factory power for this unit by another unit, carry out the complete set of start-up test of electrical before the first time incorporated into the power networks, in order to satisfy each item requirement of the complete set of start-up test of electrical before the first time incorporated into the power networks of this unit, the commonality is strong, high safety, be convenient for use widely in the scene, when effectively solving this unit high-pressure factory and providing the factory power with the transformer, can't carry out the main problem that becomes high-pressure side short circuit test and high-pressure.

Drawings

Fig. 1 is a system diagram of the present invention.

In the figure: no. 1 generator, No. 1 generator outlet switch unit, No. 1 main transformer, No. 1 high-voltage station transformer, No. 4 high-voltage station transformer, No. 2 generator outlet switch unit, No. 2 main transformer, No. 2 high-voltage station transformer, No. 2 unit 10kV 1A section bus tie switch, No. 1 unit 10kV 1B section bus tie switch, No. 2 unit 10kV 2B section bus tie switch 13, No. 2 unit 10kV 2B section bus tie switch 14, No. 2 unit 10kV 2A section bus tie switch 15, No. 2 unit 10kV 2A section bus tie switch 16, No. 1 unit 10kV 2A section bus tie switch 17, No. 1 unit 10kV 1A section bus, No. 1 unit 10kV 1B section bus tie switch 18, No. 1 kV 1B section bus tie switch, 19 is 10kV 2B section bus of No. 2 unit, and 20 is 10kV 2A section bus of No. 2 unit.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings:

referring to fig. 1, the power plant cross plant uses the whole set of start test system of electricity, including 1

number generator

1, 1 number generator

outlet switch unit

2, 1 number

main transformer

3, 1 number high-voltage plant uses transformer 4, 2

numbers generator

5, 2 numbers generator outlet switch unit 6, 2 numbers

main transformer

7, 2 numbers high-voltage plant uses

transformer

8, 1 number unit 10kV 1A section bus

incoming line switch

10, 1 number unit 10kV 1A section bus tie switch 9, 2 number unit 10kV 2A section bus tie switch 16, 2 number unit 10kV 2A section bus

incoming line switch

15, 1 number unit 10kV 1B section bus

incoming line switch

11, 1 number unit 10kV 1B section

bus tie switch

12, 2 number unit 10kV 2B section

bus tie switch

13 and 2 number unit 10kV 2B section bus incoming line switch 14; the output end of the No. 1 generator 1 is connected with the input end of a No. 1 main transformer 3 and the high-voltage side of a No. 1 high-voltage station transformer 4 through a No. 1 generator outlet switch unit 2; the output end of the No. 2 generator 5 is connected with the high-voltage sides of a No. 2 main transformer 7 and a No. 2 high-voltage station transformer 8 through a No. 2 generator outlet switch unit 6; one end of the low-voltage side of the No. 1 high-voltage station transformer 4 is connected with one end of the low-voltage side of the No. 2 high-voltage station transformer 8 through a No. 1 unit 10kV 1A section bus incoming line switch 10, a No. 1 unit 10kV 1A section bus interconnection switch 9, a No. 2 unit 10kV 2A section bus interconnection switch 16 and a No. 2 unit 10kV 2A section bus incoming line switch 15; the other end of 4 low-voltage sides of the transformer for 1 high-voltage plant is connected with the other end of 8 low-voltage sides of the transformer for 2 high-voltage plant through a line incoming switch 11 of 10kV 1B section bus of the unit 1, a line incoming switch 12 of 10kV 1B section bus of the unit 1, a line incoming switch 13 of 10kV 2B section bus of the unit 2 and a line incoming switch 14 of 10kV 2B section bus of the unit 2, wherein the transformer for 1 high-voltage plant 4 and the transformer for 2 high-voltage plant 8 are all on-load tap-changing transformers.

Specifically, the utility model discloses still include unit 10kV 1A section generating line 17 No. 1, unit 10kV 2A section generating line 20 No. 2, unit 10kV 1B section generating line 18 No. 1 and unit 10kV 2B section generating line 19 No. 2, the low pressure side of transformer 4 is used in 1 high-pressure factory is connected with the low pressure side of transformer 8 is used in 2 high-pressure factory through unit 10kV 1A section generating line service entrance switch 10 No. 1, unit 10kV 1A section generating line 17 No. 1, unit 10kV 1A section generating line contact switch 9 No. 1, unit 10kV 2A section generating line contact switch 16 No. 2, unit 10kV 2A section generating line service entrance switch 15 No. 2 and unit 10kV 2A section generating line service entrance switch 15 No. 2; the low-voltage side of the transformer 4 for the high-voltage plant No. 1 is connected with the low-voltage side of the transformer 8 for the high-voltage plant No. 2 through a line incoming switch 11 for a 10kV 1B section bus of the unit No. 1, a line incoming switch 18 for a 10kV 1B section bus of the unit No. 1, a line contact switch 12 for a 10kV 1B section bus of the unit No. 1, a line contact switch 13 for a 10kV 2B section bus of the unit No. 2, a line incoming switch 19 for a 10kV 2B section bus of the unit No. 2 and a line incoming switch 14 for a 10kV 2B section bus of.

Before the whole set of electric starting test of the No. 1 generating set, a No. 1 main transformer 3 and a No. 1 high-voltage station transformer 4 are both in a shutdown state, a No. 2 generator 5 is in a shutdown state, a No. 1 generating set 10kV 1A section bus incoming line switch 10 and a No. 1 generating set 10kV 1B section bus incoming line switch 11 are both in a switch-off position, a No. 1 generating set 10kV 1A section bus contact switch 9, a No. 1 generating set 10kV 1B section bus contact switch 12, a No. 2 generating set 10kV 2A section bus contact switch 16, a No. 2 generating set 10kV 2B section bus contact switch 13, a No. 2 generating set 10kV 2A section bus incoming line switch 15 and a No. 2 generating set 10kV 2B section bus incoming line switch 14 are all in a switch-on position, in the whole test process, a No. 1 generating set station power supply is provided by the No. 2 generating set 7 and the No. 2 high-voltage station transformer 8 through the 10kV bus contact switch, the 10kV bus tie switch is a 1 # unit 10kV 1A section bus tie switch 9, a 1 # unit 10kV 1B section bus tie switch 12, a 2 # unit 10kV 2A section bus tie switch 16, a 2 # unit 10kV 2B section bus tie switch 13, a 2 # unit 10kV 2A section bus incoming line switch 15 and a 2 # unit 10kV 2B section bus 19 incoming line switch 14.

The utility model discloses when using, in the whole set of start-up test process of electricity before the unit is incorporated into the power networks for the first time, this unit main transformer of outage and high-pressure mill transformer, provide the mill with the power for this unit through the high-pressure mill with the generating line contact switch by another unit, carry out the whole set of start-up test of electricity before the first time incorporated into the power networks to satisfy the whole set of start-up test's of electricity before this unit is incorporated into the power networks for the first time each item requirement, the commonality is strong, and the security is high, convenient to popularize and.

Claims

1. A complete set of electric starting test system for cross plant of power plant is characterized in that, the system comprises a No. 1 generator (1), a No. 1 generator outlet switch unit (2), a No. 1 main transformer (3), a No. 1 high-voltage station transformer (4), a No. 2 generator (5), a No. 2 generator outlet switch unit (6), a No. 2 main transformer (7), a No. 2 high-voltage station transformer (8), a No. 1 unit 10kV 1A section bus incoming switch (10), a No. 1 unit 10kV 1A section bus interconnection switch (9), a No. 2 unit 10kV 2A section bus interconnection switch (16), a No. 2 unit 10kV 2A section bus incoming switch (15), a No. 1 unit 10kV 1B section bus incoming switch (11), a No. 1 unit 10kV 1B section bus interconnection switch (12), a No. 2 unit 10kV 2B section bus interconnection switch (13) and a No. 2 unit 10kV 2B section bus incoming switch (14);

the output end of the No. 1 generator (1) is connected with the input end of the No. 1 main transformer (3) and the high-voltage side of the No. 1 high-voltage station transformer (4) through a No. 1 generator outlet switch unit (2);

the output end of the No. 2 generator (5) is connected with the high-voltage side of a No. 2 main transformer (7) and a No. 2 high-voltage station transformer (8) through a No. 2 generator outlet switch unit (6);

one end of the low-voltage side of the No. 1 high-voltage station transformer (4) is connected with one end of the low-voltage side of the No. 2 high-voltage station transformer (8) through a No. 1 unit 10kV 1A section bus incoming line switch (10), a No. 1 unit 10kV 1A section bus interconnection switch (9), a No. 2 unit 10kV 2A section bus interconnection switch (16) and a No. 2 unit 10kV 2A section bus incoming line switch (15); the other end of the low-voltage side of the No. 1 high-voltage station transformer (4) is connected with the other end of the low-voltage side of the No. 2 high-voltage station transformer (8) through a No. 1 unit 10kV 1B section bus incoming line switch (11), a No. 1 unit 10kV 1B section bus interconnection switch (12), a No. 2 unit 10kV 2B section bus interconnection switch (13) and a No. 2 unit 10kV 2B section bus incoming line switch (14).

2. The power plant cross-factory electrical complete set starting test system according to claim 1, characterized by further comprising a No. 1 unit 10kV 1A section bus (17) and a No. 2 unit 10kV 2A section bus (20), wherein the low-voltage side of the No. 1 high-voltage factory transformer (4) is connected with the low-voltage side of the No. 2 high-voltage factory transformer (8) through a No. 1 unit 10kV 1A section bus incoming switch (10), a No. 1 unit 10kV 1A section bus (17), a No. 1 unit 10kV 1A section bus tie switch (9), a No. 2 unit 10kV 2A section bus tie switch (16), a No. 2 unit 10kV 2A section bus (20) and a No. 2 unit 10kV 2A section bus incoming switch (15).

3. The power plant cross-factory electrical complete set starting test system according to claim 1, characterized by further comprising a No. 1 unit 10kV 1B section bus (18) and a No. 2 unit 10kV 2B section bus (19), wherein the low-voltage side of the No. 1 high-voltage factory transformer (4) is connected with the low-voltage side of the No. 2 high-voltage factory transformer (8) through a No. 1 unit 10kV 1B section bus incoming switch (11), a No. 1 unit 10kV 1B section bus (18), a No. 1 unit 10kV 1B section bus tie switch (12), a No. 2 unit 10kV 2B section bus tie switch (13), a No. 2 unit 10kV 2B section bus (19) and a No. 2 unit 10kV 2B section bus incoming switch (14).

4. The plant cross-service electrical complete set start-up test system according to claim 1, characterized in that the high-voltage service transformer No. 1 (4) and the high-voltage service transformer No. 2 (8) are both on-load tap changers.