CN103187725A - Direct current power transmission system - Google Patents
Direct current power transmission system Download PDFInfo
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- CN103187725A CN103187725A CN2013101001312A CN201310100131A CN103187725A CN 103187725 A CN103187725 A CN 103187725A CN 2013101001312 A CN2013101001312 A CN 2013101001312A CN 201310100131 A CN201310100131 A CN 201310100131A CN 103187725 A CN103187725 A CN 103187725A
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- smoothing reactor
- filter
- direct current
- resistance
- transmission line
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Abstract
The invention discloses a direct current power transmission system, comprising a first breaker, a first converter transformer, a rectifier, a first smoothing reactor, a direct current transmission line, a second smoothing rector, an inverter, a second converter transformer, a second breaker, a passive filter, a first lightning arrester, a first direct current filter, a second direct current filter and a second lightning arrester, wherein the first breaker, the first converter transformer, the rectifier, the first smoothing reactor, the direct current transmission line, the second smoothing reactor, the inverter, the second converter transformer and the second breaker are sequentially connected in series; the passive filter is connected to the connected end of the first breaker with the first converter transformer; the first lightning arrester and the first direct current filter are connected to the connected end of the first smoothing reactor with the direct current transmission line; and the second direct current filter and the second lightning arrester are connected to the connected end of the direct current transmission line with the second smoothing reactor. By adopting the direct current power transmission system, cascading failures can be effectively avoided; and the direct current power transmission system is safe and reliable.
Description
Technical field
The present invention relates to a kind of DC transmission system.
Background technology
Traditional DC transmission system has that cost is low, loss is little, etc. advantage, but cascading failure appears easily.The relevant cascading failure cause of DC transmission system is mainly voltage collapse, frequency collapse and overload chain reaction, refer to respectively: 1) the direct current system self reason causes DC line inverter generation commutation failure, can cause one pole locking even bipolar locking fault under the situation of failing in time to fix a breakdown.2) receiving end electrical network AC system breaks down, and makes direct current system change of current busbar voltage descend, thereby causes DC line inverter generation commutation failure, also may cause one pole locking even bipolar locking fault under the situation of failing in time to fix a breakdown.When 3) breaking down with the alternating current circuit of DC line paired running, originally by the power transfer of alternating current circuit transmission on DC line, might cause overload, direct current locking under the serious situation.Therefore, studying a kind of DC transmission system that can effectively avoid cascading failure, is the direction that the applicant is devoted to make great efforts.
Summary of the invention
The object of the present invention is to provide a kind of DC transmission system, can effectively avoid the generation of cascading failure, safe and reliable.Simultaneously, each filter and reactor by increasing make electric power transfer more efficient.
The technical scheme that realizes above-mentioned purpose is:
A kind of DC transmission system, be connected between first AC system and second AC system, described DC transmission system comprises first circuit breaker, passive filter, first converter transformer, rectifier, first smoothing reactor, first lightning arrester, first DC filter, DC transmission line, second DC filter, second lightning arrester, second smoothing reactor, inverter, second converter transformer and second circuit breaker, wherein:
Described first AC system, first circuit breaker, first converter transformer, rectifier, first smoothing reactor, DC transmission line, second smoothing reactor, inverter, second converter transformer, second circuit breaker and second AC system are connected in series successively;
Described passive filter connects join end and the ground connection of described first circuit breaker and first converter transformer;
Described first lightning arrester connects join end and the ground connection of described first smoothing reactor and DC transmission line;
Described first DC filter connects join end and the ground connection of described first smoothing reactor and DC transmission line;
Described second DC filter connects join end and the ground connection of described DC transmission line and second smoothing reactor;
Described second lightning arrester connects join end and the ground connection of described DC transmission line and second smoothing reactor.
Above-mentioned DC transmission system, wherein, described passive filter comprises first electric capacity, first resistance and first inductance,
Described first electric capacity, one end connects the end that joins of described first circuit breaker and first converter transformer, and the other end connects described first resistance, first grounding through resistance;
Described first inductance is in parallel with described first resistance.
Above-mentioned DC transmission system, wherein, described first DC filter comprises second electric capacity, second inductance and second resistance,
Described second electric capacity, one end connects the end that joins of described first smoothing reactor and DC transmission line, and the other end connects described second inductance;
Described second inductance connects described second resistance, second grounding through resistance.
Above-mentioned DC transmission system, wherein, described second DC filter comprises the 3rd electric capacity, the 3rd inductance and the 3rd resistance,
Described the 3rd electric capacity one end connects the end that joins of described DC transmission line and second smoothing reactor, and the other end connects described the 3rd inductance;
Described the 3rd inductance connects described the 3rd resistance, the 3rd grounding through resistance.
The invention has the beneficial effects as follows: the present invention can effectively avoid the generation of traditional DC transmission system cascading failure by effective configuration of passive filter, DC filter and smoothing reactor, and is safe and reliable.Simultaneously, each filter and the reactor of the present invention by increasing makes electric power transfer efficient quick more, and effectively reduces electric network pollution.
Description of drawings
Fig. 1 is the structural representation of DC transmission system of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
See also Fig. 1, DC transmission system of the present invention, be connected between first AC system 100 and second AC system 200, DC transmission system of the present invention comprises first circuit breaker 1, passive filter 2, first converter transformer 3, rectifier 4, first smoothing reactor 5, first lightning arrester 6, first DC filter 7, DC transmission line 8, second DC filter 9, second lightning arrester 10, second smoothing reactor 11, inverter 12, second converter transformer 13 and second circuit breaker 14, wherein:
First AC system 100, first circuit breaker 1, first converter transformer 3, rectifier 4, first smoothing reactor 5, DC transmission line 8, second smoothing reactor 11, inverter 12, second converter transformer 13, second circuit breaker 14 and second AC system 200 are connected in series successively; In the present embodiment, the model that rectifier 4 is selected for use is DYXL-LSI-100; The model that inverter is selected for use is MI-75W;
Passive filter 2 connects join end and the ground connection of first circuit breaker 1 and first converter transformer 3;
First lightning arrester 6 connects join end and the ground connection of first smoothing reactor 5 and DC transmission line 8;
First DC filter 7 connects join end and the ground connection of first smoothing reactor 5 and DC transmission line 8;
Second DC filter 9 connects join end and the ground connection of DC transmission line 8 and second smoothing reactor 11;
Second lightning arrester 10 connects join end and the ground connection of DC transmission line 8 and second smoothing reactor 11.
In the present embodiment, passive filter 2 comprises first electric capacity 21, first resistance 22 and first inductance 23; One end of first electric capacity 21 connects the end that joins of first circuit breaker 1 and first converter transformer 3, and the other end of first electric capacity 21 connects first resistance, 22, the first resistance, 22 ground connection; First inductance 23 is in parallel with first resistance 22.
In the present embodiment, first DC filter 7 comprises that an end of second electric capacity 71, second inductance 72 and second resistance, 73, the second electric capacity 71 connects the end that joins of first smoothing reactor 5 and DC transmission line 8, and the other end of second electric capacity 71 connects second inductance 72; Second inductance 72 connects second resistance, 73, the second resistance, 73 ground connection.
In the present embodiment, second DC filter 9 comprises that an end of the 3rd electric capacity 91, the 3rd inductance 92 and the 3rd resistance 93, the three electric capacity 91 connects the end that joins of DC transmission line 8 and second smoothing reactor 11, and the other end of the 3rd electric capacity 91 connects the 3rd inductance 92; The 3rd inductance 92 connects the 3rd resistance 93, the three resistance 93 ground connection.
To sum up, the generation of traditional DC transmission system cascading failure has effectively been avoided in the effective configuration of the present invention by passive filter, DC filter and smoothing reactor, makes electric power transfer efficient quick more, and effectively reduces electric network pollution.
Above embodiment is only for the usefulness that the present invention is described, but not limitation of the present invention, person skilled in the relevant technique, under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (4)
1. DC transmission system, be connected between first AC system (100) and second AC system (200), it is characterized in that, described DC transmission system comprises first circuit breaker (1), passive filter (2), first converter transformer (3), rectifier (4), first smoothing reactor (5), first lightning arrester (6), first DC filter (7), DC transmission line (8), second DC filter (9), second lightning arrester (10), second smoothing reactor (11), inverter (12), second converter transformer (13) and second circuit breaker (14), wherein:
Described first AC system (100), first circuit breaker (1), first converter transformer (3), rectifier (4), first smoothing reactor (5), DC transmission line (8), second smoothing reactor (11), inverter (12), second converter transformer (13), second circuit breaker (14) and second AC system (200) are connected in series successively;
Described passive filter (2) connects join end and the ground connection of described first circuit breaker (1) and first converter transformer (3);
Described first lightning arrester (6) connects join end and the ground connection of described first smoothing reactor (5) and DC transmission line (8);
Described first DC filter (7) connects join end and the ground connection of described first smoothing reactor (5) and DC transmission line (8);
Described second DC filter (9) connects join end and the ground connection of described DC transmission line (8) and second smoothing reactor (11);
Described second lightning arrester (10) connects join end and the ground connection of described DC transmission line (8) and second smoothing reactor (11).
2. DC transmission system according to claim 1 is characterized in that, described passive filter (2) comprises first electric capacity (21), first resistance (22) and first inductance (23), wherein:
Described first electric capacity (21) one ends connect the end that joins of described first circuit breaker (1) and first converter transformer (3), and the other end connects described first resistance (22), first resistance (22) ground connection;
Described first inductance (23) is in parallel with described first resistance (22).
3. DC transmission system according to claim 1 is characterized in that, described first DC filter (7) comprises second electric capacity (71), second inductance (72) and second resistance (73), wherein:
Described second electric capacity (71) one ends connect the end that joins of described first smoothing reactor (5) and DC transmission line (8), and the other end connects described second inductance (72);
Described second inductance (72) connects described second resistance (73), second resistance (73) ground connection.
4. DC transmission system according to claim 1 is characterized in that, described second DC filter (9) comprises the 3rd electric capacity (91), the 3rd inductance (92) and the 3rd resistance (93), wherein:
Described the 3rd electric capacity (91) one ends connect the end that joins of described DC transmission line (8) and second smoothing reactor (11), and the other end connects described the 3rd inductance (92);
Described the 3rd inductance (92) connects described the 3rd resistance (93), the 3rd resistance (93) ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101001312A CN103187725A (en) | 2013-03-26 | 2013-03-26 | Direct current power transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101001312A CN103187725A (en) | 2013-03-26 | 2013-03-26 | Direct current power transmission system |
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| CN103187725A true CN103187725A (en) | 2013-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101001312A Pending CN103187725A (en) | 2013-03-26 | 2013-03-26 | Direct current power transmission system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532135A (en) * | 2013-10-15 | 2014-01-22 | 国家电网公司 | Method and system for restraining resonance of civil power distribution system by power conditioning |
| CN103746381A (en) * | 2013-12-27 | 2014-04-23 | 华中科技大学 | Hybrid passive power filter |
| CN103970030A (en) * | 2014-05-14 | 2014-08-06 | 国网上海市电力公司 | Simulation model of high-voltage DC three-pole power transmission system |
| CN104022494A (en) * | 2014-06-21 | 2014-09-03 | 中国能源建设集团广东省电力设计研究院 | Alternating current and direct current coordinating protection method and device for flexible high voltage direct current transmission converter station circuit breaker |
| CN104617912A (en) * | 2015-01-07 | 2015-05-13 | 胡文杰 | Filtering system on direct-current or alternating-current signal transmission circuit |
| CN111245254A (en) * | 2020-01-15 | 2020-06-05 | 清华大学 | Single-phase direct current port interconnected cascade multilevel converter |
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| US4320444A (en) * | 1979-01-13 | 1982-03-16 | Brown, Boveri & Cie Ag | Control of a HVT (high voltage D-C transmission) short coupler |
| CN102231520A (en) * | 2011-06-20 | 2011-11-02 | 浙江大学 | Hybrid DC (direct current) electric power transmission system |
| CN102255293A (en) * | 2011-07-26 | 2011-11-23 | 西安交通大学 | Single-ended electrical quantity full-line quick-action protection method for recognizing faults inside and outside high-voltage direct-current transmission line region |
| CN203193277U (en) * | 2013-03-26 | 2013-09-11 | 国家电网公司 | DC power transmission system |
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2013
- 2013-03-26 CN CN2013101001312A patent/CN103187725A/en active Pending
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| US4320444A (en) * | 1979-01-13 | 1982-03-16 | Brown, Boveri & Cie Ag | Control of a HVT (high voltage D-C transmission) short coupler |
| CN102231520A (en) * | 2011-06-20 | 2011-11-02 | 浙江大学 | Hybrid DC (direct current) electric power transmission system |
| CN102255293A (en) * | 2011-07-26 | 2011-11-23 | 西安交通大学 | Single-ended electrical quantity full-line quick-action protection method for recognizing faults inside and outside high-voltage direct-current transmission line region |
| CN203193277U (en) * | 2013-03-26 | 2013-09-11 | 国家电网公司 | DC power transmission system |
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| 杨丽娟等: "±500kV超高压直流输电技术介绍", 《宁夏电力》 * |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532135A (en) * | 2013-10-15 | 2014-01-22 | 国家电网公司 | Method and system for restraining resonance of civil power distribution system by power conditioning |
| CN103746381A (en) * | 2013-12-27 | 2014-04-23 | 华中科技大学 | Hybrid passive power filter |
| CN103970030A (en) * | 2014-05-14 | 2014-08-06 | 国网上海市电力公司 | Simulation model of high-voltage DC three-pole power transmission system |
| CN104022494A (en) * | 2014-06-21 | 2014-09-03 | 中国能源建设集团广东省电力设计研究院 | Alternating current and direct current coordinating protection method and device for flexible high voltage direct current transmission converter station circuit breaker |
| CN104022494B (en) * | 2014-06-21 | 2017-09-19 | 中国能源建设集团广东省电力设计研究院有限公司 | The alternating current-direct current mating protection method and device of flexible direct current transmission converter station breaker |
| CN104617912A (en) * | 2015-01-07 | 2015-05-13 | 胡文杰 | Filtering system on direct-current or alternating-current signal transmission circuit |
| CN111245254A (en) * | 2020-01-15 | 2020-06-05 | 清华大学 | Single-phase direct current port interconnected cascade multilevel converter |
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Application publication date: 20130703 |