CN104882880A - High-voltage long-distance multi-node chain type power supply system - Google Patents
High-voltage long-distance multi-node chain type power supply system Download PDFInfo
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- CN104882880A CN104882880A CN201510258838.5A CN201510258838A CN104882880A CN 104882880 A CN104882880 A CN 104882880A CN 201510258838 A CN201510258838 A CN 201510258838A CN 104882880 A CN104882880 A CN 104882880A
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Abstract
The invention relates to a high-voltage long-distance multi-node chain type power supply system. The high-voltage long-distance multi-node chain type power supply system comprises two high-voltage central development stations, a plurality of first load node voltage reduction groups, and a second load node voltage reduction group, the plurality of first load node voltage reduction groups and the second load node voltage reduction group are connected between the two high-voltage central development stations in series via high-voltage lines, the high-voltage central development stations are used for introducing alternating current of external high-voltage power supplies, performing overvoltage protection of the alternating current and voltage-reduction output to external load nodes, and outputting the alternating current to the plurality of first load node voltage reduction groups and the second load node voltage reduction group, the first load node voltage reduction groups are used for introducing the alternating current, performing voltage reduction of the alternating current, and outputting the alternating current to the external load nodes, and the second load node voltage reduction group is used for introducing the alternating current, performing voltage reduction of the alternating current, outputting the alternating current to the external load nodes, and performing overvoltage protection. Compared with the prior art, according to the high-voltage long-distance multi-node chain type power supply system, adaptive distribution can be realized according to the electricity requirement, the power supply is stable, the scheduling is convenient, and the security is high.
Description
Technical field
The present invention relates to high voltage power transmission technical field, particularly a kind of high pressure is long apart from multinode chain type electric power system.
Background technology
Along with China's economic development, the construction of Large Infrastructure Projects project also gets more and more, the power supply reliability of key project requires also more and more higher, especially the field such as high-speed railway, the large canal in great river long distance water transfer, urban track traffic, large-scale mining industry material long distance delivery system, but mainly there is following problem in power supply plan of the prior art: supply load reliability is low, easily occurs voltage instability; The capacity inconvenience dilatation of power load; The problems such as power scheduling is inconvenient.
Summary of the invention
Technical problem to be solved by this invention is to provide one can carry out adaptability distribution according to need for electricity, and the high pressure that power supply is stable, scheduling is convenient, fail safe is high is long apart from multinode chain type electric power system.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of high pressure is long apart from multinode chain type electric power system, comprise two high pressure center development station, multiple first load bus step-down group and the second load bus step-down group, multiple first load bus step-down group and the second load bus step-down group are connected between two described high pressure center development station by high-voltage line 4;
Described high pressure center development station, it is for introducing the alternating current of external high pressure power supply, carries out overvoltage protection and externally load bus reduced output voltage to alternating current, and to multiple first load bus step-down group and the second load bus step-down group output AC electricity;
Described first load bus step-down group, it carries out step-down for introducing alternating current to alternating current, and externally load bus exports;
Described second load bus step-down group, it is for introducing alternating current, carries out step-down externally load bus output, and carry out overvoltage protection to alternating current.
The invention has the beneficial effects as follows: two high pressure center development station all can be powered to the first load bus step-down group and the second load bus step-down group, realize power supply stable; First load bus step-down group and the second load bus step-down group all can carry out reduced output voltage by high-tension electricity, and each electricity consumption point voltage is stablized, and scheduling is convenient; High pressure center development station and the second load bus step-down group all can realize carrying out overvoltage protection to high-tension electricity; make for electric energy safe operation; first load bus step-down group and the second load bus step-down group can carry out the reasonable disposition in quantity and place according to need for electricity, realize long distance, that load bus carries out power supply reliability is high more.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described high pressure center development station comprises the first switch cubicle, second switch cabinet, 3rd switch cubicle, 4th switch cubicle, 5th switch cubicle and the 6th switch cubicle, described first switch cubicle, second switch cabinet, 3rd switch cubicle, 4th switch cubicle, 5th switch cubicle is connected successively with the 6th switch cubicle, described first switch cubicle and the 6th switch cubicle access external high pressure power supply respectively, described second switch cabinet and the 5th switch cubicle carry out high voltage supply to multiple first load bus step-down group and the second load bus step-down group, described 3rd switch cubicle carries out step-down to the alternating current introduced, and externally power, described 4th switch cubicle carries out mutual induction of voltage and overvoltage protection to access high-tension electricity.
Further, described first switch cubicle, second switch cabinet, the 3rd switch cubicle, the 4th switch cubicle, the 5th switch cubicle and the 6th switch cubicle are clad withdrawal-type AC metal-enclosed switch cabinet switch cubicle
The beneficial effect of above-mentioned further scheme is adopted to be: the 3rd switch cubicle carries out step-down to entering high-tension electricity, and externally powers, and realizes in-plant stable power-supplying; 4th switch cubicle carries out mutual induction of voltage and overvoltage protection to access high-tension electricity, realizes stablizing load bus power supply safety.
Further, described first load bus step-down group comprises two the first let-down stations and the second let-down stations, two described first let-down stations all with the wiring of described high-voltage line π type, described second let-down stations and the T-shaped wiring of described high-voltage line.
Adopt the beneficial effect of above-mentioned further scheme to be: two described second let-down stations all with the wiring of described high-voltage line π type, described second let-down stations and the T-shaped wiring of described high-voltage line, can be implemented in a high pressure center development station when not powering, another high pressure center development station is powered by another line end of π type wiring, load bus is powered stable, security of operation.
Further, described second load bus step-down group comprises the first let-down stations, the second let-down stations and circuit breaker contact let-down stations, described first let-down stations and the wiring of described high-voltage line π type, described second let-down stations and the T-shaped wiring of described high-voltage line, described circuit breaker contact let-down stations and the wiring of described high-voltage line π type.
The beneficial effect of above-mentioned further scheme is adopted to be: to can be implemented in a high pressure center development station when not powering; another high pressure center development station is powered by another line end of π type wiring; load bus is powered stable; security of operation, circuit breaker contact let-down stations also can realize overvoltage protection.
Further, described first let-down stations comprises the 7th switch cubicle, the 8th switch cubicle, the 9th switch cubicle and the tenth switch cubicle, described 7th switch cubicle, the 8th switch cubicle, the 9th switch cubicle are connected successively with the tenth switch cubicle, described 7th switch cubicle and the 8th switch cubicle access the alternating current of described high-voltage line respectively, described 9th switch cubicle carries out step-down to access alternating current, and externally power, described tenth switch cubicle carries out mutual induction of voltage to access alternating current.
Further, described 7th switch cubicle, the 8th switch cubicle, the 9th switch cubicle and the tenth switch cubicle are loop-network switch cabinet.
Further, described second let-down stations comprises the 11 switch cubicle, twelvemo closes cabinet and the 13 switch cubicle, described 11 switch cubicle, twelvemo are closed cabinet and are connected successively with the 13 switch cubicle, described 11 switch cubicle accesses the alternating current of described high-voltage line, described twelvemo is closed cabinet and is carried out step-down to the alternating current entered, and externally power, described 13 switch cubicle carries out mutual induction of voltage to access alternating current.
Further, described circuit breaker contact let-down stations comprises the 14 switch cubicle, 15 switch cubicle, sixteenmo closes cabinet and the 17 switch cubicle, described 14 switch cubicle, 15 switch cubicle, sixteenmo closes cabinet and is connected successively with the 17 switch cubicle, described 14 switch cubicle and the 17 switch cubicle access the alternating current of described high-voltage line respectively, described 15 switch cubicle carries out step-down to entering alternating current, and externally power, described sixteenmo closes cabinet and carries out mutual induction of voltage and overvoltage protection to access alternating current, described 14 switch cubicle, 15 switch cubicle, sixteenmo closes cabinet and the 17 switch cubicle is clad withdrawal-type AC metal-enclosed switch cabinet switch cubicle.
Accompanying drawing explanation
Fig. 1 is the long circuit theory diagrams apart from multinode chain type electric power system of a kind of high pressure of the present invention;
Fig. 2 is the circuit theory diagrams of high pressure center development station;
Fig. 3 is the circuit theory diagrams of the first let-down stations;
Fig. 4 is the circuit theory diagrams of the second let-down stations;
Fig. 5 is the circuit theory diagrams of circuit breaker contact let-down stations.
In accompanying drawing, the list of parts representated by each label is as follows:
1, high pressure center development station, the 11, first switch cubicle, 12, second switch cabinet, the 13, the 3rd switch cubicle, the 14, the 4th switch cubicle, the 15, the 5th switch cubicle, the 16, the 6th switch cubicle;
2, the first load bus step-down group;
21, the first let-down stations, the 211, the 7th switch cubicle, the 212, the 8th switch cubicle, the 213, the 9th switch cubicle, the 214, the tenth switch cubicle;
22, the second let-down stations, the 221, the 11 switch cubicle, 222, twelvemo close cabinet, the 223, the 13 switch cubicle;
23, circuit breaker contact let-down stations, the 231, the 14 switch cubicle, the 232, the 15 switch cubicle, 233, sixteenmo close cabinet, the 234, the 17 switch cubicle;
3, the second load bus step-down group, 4, high-voltage line, 5, high voltage source.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of high pressure is long apart from multinode chain type electric power system, comprise two high pressure center development station 1, multiple first load bus step-down group 2 and the second load bus step-down group 3, multiple first load bus step-down group 2 and the second load bus step-down group 3 are connected between two described high pressure center development station 1 by high-voltage line 4;
Described high pressure center development station 1, it is for introducing the alternating current of external high pressure power supply 5, carries out overvoltage protection and externally load bus reduced output voltage to alternating current, and to multiple first load bus step-down group 2 and the second load bus step-down group 3 output AC electricity;
Described first load bus step-down group 2, it carries out step-down for introducing alternating current to alternating current, and externally load bus exports;
Described second load bus step-down group 3, it is for introducing alternating current, carries out step-down externally load bus output, and carry out overvoltage protection to alternating current.
As shown in Figure 2, described high pressure center development station 1 comprises the first switch cubicle 11, second switch cabinet 12, 3rd switch cubicle 13, 4th switch cubicle 14, 5th switch cubicle 15 and the 6th switch cubicle 16, described first switch cubicle 11, second switch cabinet 12, 3rd switch cubicle 13, 4th switch cubicle 14, 5th switch cubicle 15 is connected successively with the 6th switch cubicle 16, described first switch cubicle 11 and the 6th switch cubicle 16 access external high pressure power supply respectively, described second switch cabinet 12 and the 5th switch cubicle 15 carry out high voltage supply to multiple first load bus step-down group 2 and the second load bus step-down group 3, described 3rd switch cubicle 13 carries out step-down to the alternating current introduced, and externally power, described 4th switch cubicle 14 carries out mutual induction of voltage and overvoltage protection to access high-tension electricity.
Described first switch cubicle 11, second switch cabinet 12, the 3rd switch cubicle 13, the 4th switch cubicle 14, the 5th switch cubicle 15 and the 6th switch cubicle 16 are clad withdrawal-type AC metal-enclosed switch cabinet switch cubicle.
As shown in Figure 1, described first load bus step-down group 2 comprise two the first let-down stations 21 and described first let-down stations 21 of the second let-down stations 22, two all with the wiring of described high-voltage line 4 π type, described second let-down stations 22 and the wiring of described high-voltage line 4T type.
Described second load bus step-down group 3 comprises the first let-down stations 21, second let-down stations 22 and circuit breaker contact let-down stations 23, described first let-down stations 21 and the wiring of described high-voltage line 4 π type, described second let-down stations 22 and the wiring of described high-voltage line 4T type, described circuit breaker contact let-down stations 23 and the wiring of described high-voltage line 4 π type.
As shown in Figure 3, described first let-down stations 21 comprises the 7th switch cubicle 211, the 8th switch cubicle 212, the 9th switch cubicle 213 and the tenth switch cubicle 214, described 7th switch cubicle 211, the 8th switch cubicle 212, the 9th switch cubicle 213 are connected successively with the tenth switch cubicle 214, described 7th switch cubicle 211 and the 8th switch cubicle 212 access the alternating current of described high-voltage line 4 respectively, described 9th switch cubicle 213 carries out step-down to access alternating current, and externally power, described tenth switch cubicle 214 carries out mutual induction of voltage to access alternating current.
Described 7th switch cubicle 211, the 8th switch cubicle 212, the 9th switch cubicle 213 and the tenth switch cubicle 214 are loop-network switch cabinet.
As shown in Figure 4, described second let-down stations 22 comprises the 11 switch cubicle 221, twelvemo closes cabinet the 222 and the 13 switch cubicle 223, described 11 switch cubicle 221, twelvemo are closed cabinet 222 and are connected successively with the 13 switch cubicle 223, described 11 switch cubicle 221 accesses the alternating current of described high-voltage line 4, described twelvemo is closed cabinet 222 and is carried out step-down to the alternating current entered, and externally power, described 13 switch cubicle 223 carries out mutual induction of voltage to access alternating current.
As shown in Figure 5, described circuit breaker contact let-down stations 23 comprises the 14 switch cubicle 231, 15 switch cubicle 232, sixteenmo closes cabinet the 233 and the 17 switch cubicle 234, described 14 switch cubicle 231, 15 switch cubicle 232, sixteenmo closes cabinet 233 and is connected successively with the 17 switch cubicle 234, described 14 switch cubicle the 231 and the 17 switch cubicle 234 accesses the alternating current of described high-voltage line 4 respectively, described 15 switch cubicle 232 carries out step-down to entering alternating current, and externally power, described sixteenmo closes cabinet 233 and carries out mutual induction of voltage and overvoltage protection to access alternating current, described 14 switch cubicle 231, 15 switch cubicle 232, sixteenmo closes cabinet the 233 and the 17 switch cubicle 234 and is clad withdrawal-type AC metal-enclosed switch cabinet switch cubicle.
Implement this device, two high pressure center development station 1 carry alternating current respectively to the multiple first load bus step-down group 2 between two high pressure center development station 1 and the second load bus step-down group 3, and step-down is carried out to alternating current, then transmit electricity to the node load of high pressure center development station 1 near zone; The alternating current of the first load bus step-down group 2 pairs high pressure center development station 1 input carries out step-down, then transmits electricity to the node load of the first load bus step-down group 2 near zone; Second load bus step-down group 3 carries out overvoltage protection to the alternating current introducing high pressure center development station 1 or the second load bus step-down group 3, and carries out step-down to alternating current, then transmits electricity to the node load of the second load bus step-down group 3 near zone.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a high pressure is long apart from multinode chain type electric power system, it is characterized in that: comprise two high pressure center development station (1), multiple first load bus step-down group (2) and the second load bus step-down group (3), multiple first load bus step-down group (2) and the second load bus step-down group (3) are connected between two described high pressure centers development station (1) by high-voltage line (4);
Described high pressure center development station (1), it is for introducing the alternating current of external high pressure power supply (5), overvoltage protection and externally load bus reduced output voltage are carried out to alternating current, and to multiple first load bus step-down group (2) and the second load bus step-down group (3) output AC electricity;
Described first load bus step-down group (2), it carries out step-down for introducing alternating current to alternating current, and externally load bus exports;
Described second load bus step-down group (3), it is for introducing alternating current, carries out step-down externally load bus output, and carry out overvoltage protection to alternating current.
2. a kind of high pressure is long apart from multinode chain type electric power system according to claim 1, it is characterized in that: described high pressure center development station (1) comprises the first switch cubicle (11), second switch cabinet (12), 3rd switch cubicle (13), 4th switch cubicle (14), 5th switch cubicle (15) and the 6th switch cubicle (16), described first switch cubicle (11), second switch cabinet (12), 3rd switch cubicle (13), 4th switch cubicle (14), 5th switch cubicle (15) is connected successively with the 6th switch cubicle (16), described first switch cubicle (11) and the 6th switch cubicle (16) access external high pressure power supply respectively, described second switch cabinet (12) and the 5th switch cubicle (15) carry out high voltage supply to multiple first load bus step-down group (2) and the second load bus step-down group (3), described 3rd switch cubicle (13) carries out step-down to the alternating current introduced, and externally power, described 4th switch cubicle (14) carries out mutual induction of voltage and overvoltage protection to access high-tension electricity.
3. a kind of high pressure is long apart from multinode chain type electric power system according to claim 2, it is characterized in that: described first switch cubicle (11), second switch cabinet (12), the 3rd switch cubicle (13), the 4th switch cubicle (14), the 5th switch cubicle (15) and the 6th switch cubicle (16) are clad withdrawal-type AC metal-enclosed switch cabinet switch cubicle.
4. a kind of high pressure is long apart from multinode chain type electric power system according to claim 1, it is characterized in that: described first load bus step-down group (2) comprises two the first let-down stations (21) and the second let-down stations (22), two described first let-down stations (21) all with the wiring of described high-voltage line (4) π type, described second let-down stations (22) and described high-voltage line (4) T-shaped wiring.
5. a kind of high pressure is long apart from multinode chain type electric power system according to claim 4, it is characterized in that: described second load bus step-down group (3) comprises the first let-down stations (21), the second let-down stations (22) and circuit breaker contact let-down stations (23), described first let-down stations (21) all with the wiring of described high-voltage line (4) π type, described second let-down stations (22) and described high-voltage line (4) T-shaped wiring, described circuit breaker contact let-down stations (23) and the wiring of described high-voltage line (4) π type.
6. a kind of high pressure is long apart from multinode chain type electric power system according to claim 4, it is characterized in that: described first let-down stations (21) comprises the 7th switch cubicle (211), 8th switch cubicle (212), 9th switch cubicle (213) and the tenth switch cubicle (214), described 7th switch cubicle (211), 8th switch cubicle (212), 9th switch cubicle (213) is connected successively with the tenth switch cubicle (214), described 7th switch cubicle (211) and the 8th switch cubicle (212) access the alternating current of described high-voltage line (4) respectively, described 9th switch cubicle (213) carries out step-down to access alternating current, and externally power, described tenth switch cubicle (214) carries out mutual induction of voltage to access alternating current.
7. a kind of high pressure is long apart from multinode chain type electric power system according to claim 6, it is characterized in that: described 7th switch cubicle (211), the 8th switch cubicle (212), the 9th switch cubicle (213) and the tenth switch cubicle (214) are loop-network switch cabinet.
8. a kind of high pressure is long apart from multinode chain type electric power system according to claim 4, it is characterized in that: described second let-down stations (22) comprises the 11 switch cubicle (221), twelvemo closes cabinet (222) and the 13 switch cubicle (223), described 11 switch cubicle (221), twelvemo is closed cabinet (222) and is connected successively with the 13 switch cubicle (223), described 11 switch cubicle (221) accesses the alternating current of described high-voltage line (4), described twelvemo is closed cabinet (222) and is carried out step-down to the alternating current entered, and externally power, described 13 switch cubicle (223) carries out mutual induction of voltage to access alternating current.
9. a kind of high pressure is long apart from multinode chain type electric power system according to claim 8, it is characterized in that: described in draw together the 11 switch cubicle (221), twelvemo closes cabinet (222) and the 13 switch cubicle (223) is loop-network switch cabinet.
10. a kind of high pressure is long apart from multinode chain type electric power system according to claim 5, it is characterized in that: described circuit breaker contact let-down stations (23) comprises the 14 switch cubicle (231), 15 switch cubicle (232), sixteenmo closes cabinet (233) and the 17 switch cubicle (234), described 14 switch cubicle (231), 15 switch cubicle (232), sixteenmo closes cabinet (233) and is connected successively with the 17 switch cubicle (234), described 14 switch cubicle (231) and the 17 switch cubicle (234) access the alternating current of described high-voltage line (4) respectively, described 15 switch cubicle (232) carries out step-down to entering alternating current, and externally power, described sixteenmo closes cabinet (233) and carries out mutual induction of voltage and overvoltage protection to access alternating current, described 14 switch cubicle (231), 15 switch cubicle (232), sixteenmo closes cabinet (233) and the 17 switch cubicle (234) is clad withdrawal-type AC metal-enclosed switch cabinet switch cubicle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510258838.5A CN104882880B (en) | 2015-05-20 | 2015-05-20 | A kind of high pressure length is away from multinode chain type power supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510258838.5A CN104882880B (en) | 2015-05-20 | 2015-05-20 | A kind of high pressure length is away from multinode chain type power supply system |
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| CN104882880A true CN104882880A (en) | 2015-09-02 |
| CN104882880B CN104882880B (en) | 2018-10-26 |
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Citations (5)
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|---|---|---|---|---|
| CN201174591Y (en) * | 2008-01-30 | 2008-12-31 | 湖南大学 | Synthetic energy saving system of enterprise power distribution network |
| WO2010102666A1 (en) * | 2009-03-11 | 2010-09-16 | Abb Technology Ag | A modular voltage source converter |
| CN102170144A (en) * | 2011-04-15 | 2011-08-31 | 福建省电力有限公司电力科学研究院 | Chain extension power supply system |
| CN203225520U (en) * | 2013-05-09 | 2013-10-02 | 国家电网公司 | Wiring network of medium-voltage power distribution network |
| CN204835526U (en) * | 2015-05-20 | 2015-12-02 | 河南省水利勘测设计研究有限公司 | High pressure length multinode chain power supply system |
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2015
- 2015-05-20 CN CN201510258838.5A patent/CN104882880B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201174591Y (en) * | 2008-01-30 | 2008-12-31 | 湖南大学 | Synthetic energy saving system of enterprise power distribution network |
| WO2010102666A1 (en) * | 2009-03-11 | 2010-09-16 | Abb Technology Ag | A modular voltage source converter |
| CN102170144A (en) * | 2011-04-15 | 2011-08-31 | 福建省电力有限公司电力科学研究院 | Chain extension power supply system |
| CN203225520U (en) * | 2013-05-09 | 2013-10-02 | 国家电网公司 | Wiring network of medium-voltage power distribution network |
| CN204835526U (en) * | 2015-05-20 | 2015-12-02 | 河南省水利勘测设计研究有限公司 | High pressure length multinode chain power supply system |
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| CN104882880B (en) | 2018-10-26 |
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