一种电气化铁路变电所多源融合柔性变电装置

Abstract

本实用新型提出了一种电气化铁路变电所多源融合柔性变电装置，涉及电气化铁路供电的技术领域，首先通过三相高压进线电路及高压母线电路，分别为各个变压器电路及变压器电路所连接的电能路由器电路供电，将第一与第二电能路由器电路接入中压公共母线，为列车牵引负荷接触网供电，高压母线电路还通过变压器供电电路与中压母线电路连接，变压器供电电路与电能路由器相互配合，兼容异相供电与同相供电模式，实现电气化铁路变电所的柔性变电；将风光发电装置接入到融合牵引供电及动力配电的一体化柔性多端口电能路由器，拓展了控制方法，支撑了分布式可再生能源的接入，实现清洁能源与列车牵引负荷和动力负荷的协同控制，有效适应新能源接入需求。

Claims

1. A multi-source fusion flexible substation device for electrified railway substation, characterized in that, include: The circuit consists of a three-phase high-voltage incoming line (1), a high-voltage busbar circuit (2), a first transformer circuit (3), a second transformer circuit (4), a transformer power supply circuit (5), a third transformer circuit (6), a fourth transformer circuit (7), a first power router circuit (8), a second power router circuit (9), and a medium-voltage common busbar (10) for supplying power to the contact network of the train traction load. The three-phase high-voltage incoming line circuit (1) is connected to the input terminal of the high-voltage bus circuit (2). The output terminal of the high-voltage bus circuit (2) is connected to the input terminals of the first transformer circuit (3), the second transformer circuit (4), the transformer power supply circuit (5), the third transformer circuit (6), and the fourth transformer circuit (7), respectively. The output terminals of the first transformer circuit (3) and the second transformer circuit (4) are connected to the input terminal of the first power router circuit (8), respectively. The output terminals of the third transformer circuit (6) and the fourth transformer circuit (7) are connected to the input terminal of the second power router circuit (9), respectively. The output terminals of the first power router circuit (8), the transformer power supply circuit (5), and the second power router circuit (9) are connected to the input terminal of the medium-voltage common bus (10), respectively. The first power router circuit (8) and the second power router circuit (9) are also connected to the power distribution load and the distributed new energy device, for powering the power distribution load and exchanging energy with the distributed new energy device.

2. The multi-source integrated flexible substation device for electrified railway substations according to claim 1, characterized in that, The three-phase high-voltage incoming line circuit (1) includes a first three-phase high-voltage incoming line, a second three-phase high-voltage incoming line, a first high-voltage circuit breaker QFA, and a second high-voltage circuit breaker QFB. The first three-phase high-voltage incoming line is connected to one end of the first high-voltage circuit breaker QFA, the second three-phase high-voltage incoming line is connected to one end of the second high-voltage circuit breaker QFB, and the other ends of the first high-voltage circuit breaker QFA and the second high-voltage circuit breaker QFB are respectively connected to the high-voltage bus circuit (2).

3. The multi-source fusion flexible substation device for electrified railway according to claim 2, characterized in that, The high-voltage bus circuit (2) includes a first high-voltage bus, a third high-voltage circuit breaker QFAB, and a second high-voltage bus. The first high-voltage bus is connected to the output terminal of the first high-voltage circuit breaker QFA, the input terminal of the first transformer circuit (3), the input terminal of the second transformer circuit (4), the input terminal of the transformer power supply circuit (5), and one end of the third high-voltage circuit breaker QFAB. The second high-voltage bus is connected to the output terminal of the second high-voltage circuit breaker QFB, the input terminal of the third transformer circuit (6), the input terminal of the fourth transformer circuit (7), the input terminal of the transformer power supply circuit (5), and the other end of the third high-voltage circuit breaker QFAB.

4. The multi-source fusion flexible substation device for electrified railway according to claim 3, characterized in that, The first transformer circuit (3) includes a fourth high-voltage circuit breaker QF1, a first three-phase transformer T1 and a fifth high-voltage circuit breaker QF7. The first high-voltage bus is connected to one end of the fourth high-voltage circuit breaker QF1, the other end of the fourth high-voltage circuit breaker QF1 is connected to the input end of the first three-phase transformer T1, the output end of the first three-phase transformer T1 is connected to one end of the fifth high-voltage circuit breaker QF7, and the other end of the fifth high-voltage circuit breaker QF7 is connected to the first power router circuit (8).

5. The multi-source fusion flexible substation device for electrified railway according to claim 3, characterized in that, The second transformer circuit (4) includes a sixth high-voltage circuit breaker QF2 and a second three-phase transformer T2. The first high-voltage bus is connected to one end of the sixth high-voltage circuit breaker QF2, the other end of the sixth high-voltage circuit breaker QF2 is connected to the input end of the second three-phase transformer T2, and the output end of the second three-phase transformer T2 is connected to the first power router circuit (8).

6. The multi-source fusion flexible substation device for electrified railway according to claim 3, characterized in that, The transformer power supply circuit (5) includes a seventh high-voltage circuit breaker QF3, an eighth high-voltage circuit breaker QF4, a first single-phase transformer T5, a second single-phase transformer T6, a ninth high-voltage circuit breaker QF-VA1, a tenth high-voltage circuit breaker QF-VB1, an eleventh high-voltage circuit breaker QF-VA2, and a twelfth high-voltage circuit breaker QF-VB2. One end of the seventh high-voltage circuit breaker QF3 is connected to the first high-voltage busbar, and the other end of the seventh high-voltage circuit breaker QF3 is connected to the input terminal of the first single-phase transformer T5. The output terminals of the first single-phase transformer T5 are respectively connected to the ninth high-voltage circuit breaker QF-VA1. One end of the tenth high-voltage circuit breaker QF-VB1 and one end of the eighth high-voltage circuit breaker QF4 are connected to the second high-voltage busbar. The other end of the eighth high-voltage circuit breaker QF4 is connected to the input terminal of the second single-phase transformer T6. The output terminal of the second single-phase transformer T6 is connected to one end of the eleventh high-voltage circuit breaker QF-VA2 and the twelfth high-voltage circuit breaker QF-VB2, respectively. The other ends of the ninth high-voltage circuit breaker QF-VA1, the tenth high-voltage circuit breaker QF-VB1, the eleventh high-voltage circuit breaker QF-VA2 and the twelfth high-voltage circuit breaker QF-VB2 are connected to the medium-voltage common busbar (10), respectively.

7. The multi-source fusion flexible substation device for electrified railway according to claim 3, characterized in that, The third transformer circuit (6) includes a thirteenth high-voltage circuit breaker QF5 and a third three-phase transformer T3. The second high-voltage bus is connected to one end of the thirteenth high-voltage circuit breaker QF5, the other end of the thirteenth high-voltage circuit breaker QF5 is connected to the input end of the third three-phase transformer T3, and the output end of the third three-phase transformer T3 is connected to the second power router circuit (9).

8. The multi-source fusion flexible power transformation device for an electrified railway substation according to claim 3, characterized in that, The fourth transformer circuit (7) includes the fourteenth high-voltage circuit breaker QF6, the fourth three-phase transformer T4, and the fifteenth high-voltage circuit breaker QF8. The second high-voltage busbar is connected to one end of the fourteenth high-voltage circuit breaker QF6, the other end of the fourteenth high-voltage circuit breaker QF6 is connected to the input end of the fourth three-phase transformer T4, the output end of the fourth three-phase transformer T4 is connected to one end of the fifteenth high-voltage circuit breaker QF8, and the other end of the fifteenth high-voltage circuit breaker QF8 is connected to the second power router circuit (9).

9. The multi-source fusion flexible substation device of an electrified railway substation according to any one of claims 4-8, characterized in that, The first power router circuit (8) includes the sixteenth high-voltage circuit breaker QF9, the seventeenth high-voltage circuit breaker QF10, the eighteenth high-voltage circuit breaker QF11, the nineteenth high-voltage circuit breaker QF12, the twentieth high-voltage circuit breaker QF13, the twenty-first high-voltage circuit breaker QF14, the twenty-second high-voltage circuit breaker QF15, the twenty-third high-voltage circuit breaker QF16, the twenty-fourth high-voltage circuit breaker QF25, the fifth three-phase transformer T7, the seventh single-phase transformer T9, the first medium-voltage AC bus, the first medium-low voltage DC bus, and the first power router; The first power router includes a first AC / DC converter C1, a second AC / DC converter C2, a third AC / DC converter C3, and a first DC / DC converter C4; The distributed new energy devices include substation wind and solar power generation devices and new energy storage equipment. The first medium-voltage AC busbar is connected to the other end of the fifth high-voltage circuit breaker QF7, and one end of the sixteenth high-voltage circuit breaker QF9, the seventeenth high-voltage circuit breaker QF10, the eighteenth high-voltage circuit breaker QF11, and the nineteenth high-voltage circuit breaker QF12. The other end of the sixteenth high-voltage circuit breaker QF9 is connected to a new type of energy storage equipment; the other end of the seventeenth high-voltage circuit breaker QF10 is connected to a wind and solar power generation device; the other end of the eighteenth high-voltage circuit breaker QF11 is connected to the substation's power distribution load; and the other end of the nineteenth high-voltage circuit breaker QF12 is connected to the input terminal of the fifth three-phase transformer T7. The output terminal of the fifth three-phase transformer T7 is connected to the AC terminal of the first AC / DC converter C1; the AC terminal of the second AC / DC converter C2 is connected to the output terminal of the second three-phase transformer T2; and the DC terminals of the first AC / DC converter C1, the second AC / DC converter C2, the third AC / DC converter C3, and the first DC / DC converter... One DC terminal of converter C4 is connected to a DC bus, and the other DC terminal of the first DC / DC converter C4 is connected to one end of the twentieth high voltage circuit breaker QF13. The other end of the twentieth high voltage circuit breaker QF13, one end of the twentieth high voltage circuit breaker QF14, one end of the twentieth high voltage circuit breaker QF15, and one end of the twentieth high voltage circuit breaker QF16 are respectively connected to the first medium and low voltage DC bus. The other end of the twentieth high voltage circuit breaker QF14 is connected to the new energy storage equipment. The other end of the twentieth high voltage circuit breaker QF15 is connected to the wind and solar power generation device. The other end of the twentieth high voltage circuit breaker QF16 is connected to the substation power distribution load. The AC terminal of the third AC / DC converter C3 is connected to the input terminal of the seventh single-phase transformer T9. The output terminal of the seventh single-phase transformer T9 is connected to one end of the twentieth high voltage circuit breaker QF25. The other end of the twentieth high voltage circuit breaker QF25 is connected to the medium voltage common bus (10). The second power router circuit (9) includes the 25th high-voltage circuit breaker QF24, the 26th high-voltage circuit breaker QF23, the 27th high-voltage circuit breaker QF22, the 28th high-voltage circuit breaker QF21, the 29th high-voltage circuit breaker QF20, the 30th high-voltage circuit breaker QF19, the 31st high-voltage circuit breaker QF18, the 32nd high-voltage circuit breaker QF17, the 33rd high-voltage circuit breaker QF26, the 6th three-phase transformer T8, the 8th single-phase transformer T10, the second medium-voltage AC bus, the second medium-low voltage DC bus, and the second power router; The second power router includes a second DC / DC converter C5, a fourth AC / DC converter C6, a fifth AC / DC converter C7, and a sixth AC / DC converter C8; The second medium-voltage AC busbar is connected to the other end of the fifteenth high-voltage circuit breaker QF8, and one end of the twenty-fifth high-voltage circuit breaker QF24, the twenty-sixth high-voltage circuit breaker QF23, the twenty-seventh high-voltage circuit breaker QF22, and the twenty-eighth high-voltage circuit breaker QF21. The other end of the twenty-fifth high-voltage circuit breaker QF24 is connected to the substation's power distribution load. The other end of the twenty-sixth high-voltage circuit breaker QF23 is connected to the wind and solar power generation device. The other end of the twenty-seventh high-voltage circuit breaker QF22 is connected to the new energy storage equipment. The other end of the twenty-eighth high-voltage circuit breaker QF21 is connected to the input terminal of the sixth three-phase transformer T8. The output terminal of the sixth three-phase transformer T8 is connected to the AC terminal of the sixth AC / DC converter C8. The AC terminal of the fourth AC / DC converter C6 is connected to the output terminal of the third three-phase transformer T3. One DC terminal of the second DC / DC converter C5, the DC terminal of the fourth AC / DC converter C6, and the DC terminal of the fifth AC / DC converter C7 are also connected. The DC terminals of the sixth AC / DC converter C8 are connected to a DC bus, the other DC terminal of the second DC / DC converter C5 is connected to one end of the twenty-ninth high-voltage circuit breaker QF20, the other end of the twenty-ninth high-voltage circuit breaker QF20, one end of the thirtieth high-voltage circuit breaker QF19, one end of the thirty-first high-voltage circuit breaker QF18, and one end of the thirty-second high-voltage circuit breaker QF17 are connected to the second medium-low voltage DC bus, the other end of the thirtieth high-voltage circuit breaker QF19 is connected to the new energy storage equipment, the other end of the thirty-first high-voltage circuit breaker QF18 is connected to the wind and solar power generation device, the other end of the thirty-second high-voltage circuit breaker QF17 is connected to the substation power distribution load, the AC terminal of the fifth AC / DC converter C7 is connected to the input terminal of the eighth single-phase transformer T10, the output terminal of the eighth single-phase transformer T10 is connected to one end of the thirty-third high-voltage circuit breaker QF26, and the other end of the thirty-third high-voltage circuit breaker QF26 is connected to the medium-voltage common bus (10).

10. The multi-source fusion flexible substation device for electrified railway according to claim 9, characterized in that, The medium-voltage common busbar (10) includes a first medium-voltage common busbar, a thirty-fourth high-voltage circuit breaker QF27, a second medium-voltage common busbar, a thirty-fifth high-voltage circuit breaker QF28, and a thirty-sixth high-voltage circuit breaker QF29. The first medium-voltage common busbar is connected to the other end of the twenty-fourth high-voltage circuit breaker QF25, the other end of the ninth high-voltage circuit breaker QF-VA1, the other end of the tenth high-voltage circuit breaker QF-VB1, one end of the thirty-third high-voltage circuit breaker QF27, and one end of the thirty-fourth high-voltage circuit breaker QF28. The second medium-voltage common busbar is connected to the other end of the eleventh high-voltage circuit breaker QF-VA2, the other end of the twelfth high-voltage circuit breaker QF-VB2, the other end of the thirty-third high-voltage circuit breaker QF26, the other end of the thirty-third high-voltage circuit breaker QF27, and one end of the thirty-fifth high-voltage circuit breaker QF29. The other end of the thirty-fourth high-voltage circuit breaker QF28 and the other end of the thirty-fifth high-voltage circuit breaker QF29 are connected to the train traction load contact network.

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