CN209929984U - Transformer substation reactive power compensation device arrangement structure based on large-capacitance device box-type capacitor - Google Patents
Transformer substation reactive power compensation device arrangement structure based on large-capacitance device box-type capacitor Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/30—Reactive power compensation
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Abstract
The utility model provides a reactive power compensator arrangement structure of transformer substation based on box condenser of big capacitance device, use transformer and generating line interval equipment, its characterized in that including capacitor bank, reactor group, station: the capacitor bank comprises a #1 mother #1 capacitor bank, a #1 mother #2 capacitor bank, a #2 mother #1 capacitor bank, a #2 mother #2 capacitor bank, a #3 mother #1 capacitor bank, a #3 mother #2 capacitor bank, a #4 mother #1 capacitor bank and a #4 mother #2 capacitor bank, and the transformer substation reactive compensation device arrangement structure based on the large-capacitance device box-type capacitor can effectively reduce the longitudinal size of a 35kV power distribution device area by adopting the large-capacitance device box-type capacitor, the more the number of the reactive compensation device groups is, the more obvious the occupied area saving effect is achieved, meanwhile, the current transformers in the capacitor group are connected with the capacitor banks through cables, the capacitor bank adopts a lower wire inlet mode, the whole capacitor bank does not have an external leakage part, and the operation is safe and reliable.
Description
Technical Field
The utility model relates to a capacitor complete sets's of transformer substation arrangement structure especially relates to capacitor complete sets's when transformer substation takes up an area of the limited arrangement.
Background
With the rapid development of national economy, the land acquisition of the transformer substation is more and more difficult, and how to effectively reduce the floor area of the transformer substation becomes one of the primary problems in the current transformer substation design. In recent years, due to the large-scale application of GIS equipment, the occupied area of distribution devices with 110kV or above voltage level for power transformation is greatly reduced, but the capacitors of reactive compensation equipment and the like are not broken through due to the limitation of technical development, and particularly, the large number and the large capacity of the reactive compensation devices of transformer substations with 330kV or above voltage level become one of the main factors for limiting the occupied area of the transformer substations. At present, most transformer substations adopt a preassembled frame type capacitor, for example, a certain 500kV transformer substation, when the capacitor is adopted, the longitudinal size difference between the capacitor space and other equipment spaces is large, waste of land resources is caused, the capacitor bank is connected with the spacing equipment through a bare lead, and an exposed conductor runs in a charged mode, so that potential safety hazards exist. Aiming at the situations, the invention provides a novel transformer substation reactive compensation device arrangement scheme based on a large-capacitance device box-type capacitor based on the current capacitor complete equipment development situation and the transformer substation arrangement requirement at home and abroad based on a certain 500kV transformer substation, and optimizes the wire inlet mode of the capacitor complete equipment, so that the capacitor bank has no conductive part which leaks outwards, and the safety of operators is ensured.
The conventional arrangement structure of the reactive power compensation device of the transformer substation is shown in fig. 1-2, in a 500kV transformer substation, a 35kV distribution apparatus comprising a capacitor bank, a reactor bank, a station transformer and a busbar equipment bay, the planar arrangement being as shown in fig. 1, the arrangement being such that apart from the busbar equipment bay, wherein, the capacitor bank, the reactor bank, the transformer for station and other circuit breaker interval equipment elements comprise isolating switches, circuit breakers and current transformers, because the capacitor interval comprises devices such as series reactors, capacitors and the like in the capacitor bank, the longitudinal dimension of the 35kV distribution device is determined by the capacitor bank interval and is 35 meters, the area of the 35kV distribution device is larger, meanwhile, the section diagram of a 35kV capacitor of a conventional transformer substation is shown in fig. 3, the current transformer and the capacitor bank and the inside of the capacitor bank are connected by bare conductors, and potential safety hazards exist during capacitor maintenance or overhaul.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of prior art, the technical purpose of the utility model is to reduce the area of whole overall arrangement scheme, make whole layout design not have outer leakage position, operation safe and reliable.
In order to realize the technical purpose, the utility model provides a reactive power compensator arrangement structure of transformer substation based on box condenser of big capacitance device, use transformer and generating line spacer equipment, its characterized in that including capacitor bank, reactor bank, station: the capacitor bank comprises a #1 mother #1 capacitor bank, a #1 mother # 2 capacitor bank, a #2 mother #1 capacitor bank, a #2 mother # 2 capacitor bank, a #3 mother #1 capacitor bank, a #3 mother # 2 capacitor bank, a #4 mother #1 capacitor bank and a #4 mother # 2 capacitor bank, the reactor bank comprises a 1 mother reactor bank, a #2 mother reactor bank, a #3 mother reactor bank and a #4 mother reactor, the station transformer comprises a #1 station transformer and a #2 station transformer, the bus spacing device comprises a #1 mother PT and an arrester, a #2 mother PT and an arrester, a #3 mother PT and an arrester, and a #4 mother PT and an arrester, and the components are sequentially spaced and ordered from west to east: the reactive power compensation device comprises a #1 mother-to-mother #1 capacitor group, a #1 mother-to-mother # 2 capacitor group, a #1 mother PT and lightning arrester, a #1 mother reactor group, a #2 mother-to-mother #1 capacitor group, a #2 mother PT and lightning arrester, a #1 station change, a #2 station change, a #3 mother PT and lightning arrester, a #3 mother-to-mother #1 capacitor group, a #3 mother # 2 capacitor group, a #3 mother reactor group, a #4 mother reactor, a #4 mother PT and lightning arrester, a #4 mother #1 capacitor group and a #4 mother # 2 capacitor group, thereby forming a reactive power compensation device layout structure of the transformer substation.
Further, the capacitor bank is a 60Mvar low-voltage capacitor, the reactor bank is a 60Mvar low-voltage reactor, the spacing width of two adjacent reactor banks is not less than 10125mm, the spacing width of adjacent capacitor banks is not less than 9910mm, and the spacing width between the parallel capacitor bank and the reactor bank is not less than 9455mm.
Furthermore, the capacitor bank is a large-capacitance device box-type capacitor, the large-capacitance device box-type capacitor at least comprises an isolating switch, a circuit breaker, a current transformer and a capacitor main part, and the current transformer and the capacitor main part are connected through a cable and are electrically connected in a downward wire inlet mode.
The utility model has the advantages that:
the utility model discloses a reactive power compensator arrangement structure of transformer substation based on big capacitor device box capacitor adopts big capacitor device box capacitor can effectively reduce the vertical dimension in 35kV distribution device district, and the reactive power compensator group counts more, and it is more obvious that it saves the area of effect, adopts cable junction between the current transformer in the electric capacity group and the electric capacity group simultaneously, and the electric capacity group adopts inlet wire mode down, and whole electric capacity group does not have outer leakage position, operation safe and reliable.
Drawings
FIG. 1 is a plan view of a 35kV power distribution apparatus in a conventional capacitor;
FIG. 2 is a cross-sectional view of a conventional capacitor at intervals;
FIG. 3 is a plan view of a 35kV power distribution device of the present invention when a large capacitance device is used as a box capacitor;
FIG. 4 is a time-interval cross-sectional view of the large-capacitance device box-type capacitor of the present invention;
in the figure: 1. a #1 mother #1 capacitor bank, a #1 mother # 2 capacitor bank, a #3, #1 mother PT and arrester, a 4, #1 mother reactor bank, a 5, #2 mother reactor bank, a 6, #2 mother #1 capacitor bank, a 7, #2 mother # 2 capacitor bank, an 8, #2 mother PT and arrester, a 9, #1 station change, a 10, #2 station change, a 11, #3 mother PT and arrester, a 12, #3 mother #1 capacitor bank, a 13, #3 mother # 2 capacitor bank, a 14, #3 mother reactor bank, a 15, #4 mother reactor, a 16, #4 mother PT and arrester, a 17, #4 mother #1 capacitor bank, a 18, #4 mother # 2 capacitor bank, a conventional capacitor, a B, a large capacitor box capacitor.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Example (b):
as shown in fig. 3-4, a transformer substation reactive compensation device arrangement structure based on a large-capacitance device box capacitor includes a capacitor bank, a reactor bank, a substation transformer, and a bus bar spacing device.
The capacitor banks include a #1 mother #1 capacitor bank 1, a #1 mother # 2 capacitor bank 2, a #2 mother #1 capacitor bank 6, a #2 mother # 2 capacitor bank 7, a #3 mother #1 capacitor bank 12, a #3 mother # 2 capacitor bank 13, a #4 mother #1 capacitor bank 17, and a #4 mother # 2 capacitor bank 18.
The reactor groups include a 1-parent reactor group 4, # 2-parent reactor group 5, # 3-parent reactor group 14, and # 4-parent reactor 15.
The station transformer includes a #1 station transformer 9 and a #2 station transformer 10.
The bus bar spacing device comprises a #1 bus bar PT and lightning arrester 3, a #2 bus bar PT and lightning arrester 8, a #3 bus bar PT and lightning arrester 11, and a #4 bus bar PT and lightning arrester 16.
Sequencing the components 1 to 18 at intervals from west to east: the reactive power compensation device arrangement structure comprises a #1 mother #1 capacitor bank 1, a #1 mother # 2 capacitor bank 2, a #1 mother PT and lightning arrester 3, a #1 mother reactor bank 4, a #2 mother reactor bank 5, a #2 mother #1 capacitor bank 6, a #2 mother # 2 capacitor bank 7, a #2 mother PT and lightning arrester 8, a #1 station transformer 9, a #2 station transformer 10, a #3 mother PT and lightning arrester 11, a #3 mother #1 capacitor bank 12, a #3 mother # 2 capacitor bank 13, a #3 mother reactor bank 14, a #4 mother reactor 15, a #4 mother PT and lightning arrester 16, a #4 mother #1 capacitor bank 17 and a #4 mother # 2 capacitor bank 18, and accordingly the reactive power compensation device arrangement structure of the transformer substation is formed.
The capacitor bank is a 60Mvar low-voltage capacitor, the reactor bank is a 60Mvar low-voltage reactor, the spacing width of two adjacent reactor banks is not less than 10125mm, the spacing width of the adjacent capacitor banks is not less than 9910mm, and the spacing width between the parallel capacitor bank and the reactor bank is not less than 9455mm.
The capacitor bank is a large-capacitance device box-type capacitor, the large-capacitance device box-type capacitor at least comprises an isolating switch, a circuit breaker, a current transformer and a capacitor main part, the current transformer and the capacitor main part are connected through a cable, and the electric connection is realized through a lower wire inlet mode.
The invention is further explained by combining a certain 500kV transformer substation, and the 35kV planning reactive capacity comprises 4 groups of 60Mvar low-voltage reactors and 8 groups of 60Mvar low-voltage capacitors. According to the equipment bidding condition, the outer diameter of the shunt reactor equipment is 3000mm, the overall dimension of the large-capacitance device box-type capacitor oiling reactance equipment is 6910mm multiplied by 8566mm (width multiplied by length), and the phase-to-phase distance of the circuit breaker is 1200 mm. According to the first step, the interval width of two adjacent reactors is determined to be larger than or equal to 10125mm, the interval width of adjacent capacitors is larger than or equal to 9910mm, the interval width between the parallel capacitors and the reactors is larger than or equal to 9455mm, and the total station arrangement is combined to determine that the interval sequencing of the 35kV power distribution device in the station is sequentially from west to east: the power supply comprises a #1 mother #1 capacitor group, a #1 mother # 2 capacitor group, a #1 mother PT and lightning arrester, a #1 mother reactor group, a #2 mother #1 capacitor group, a #2 mother # 2 capacitor group, a #2 mother PT and lightning arrester, a #1 station change, a #2 station change, a #3 mother PT and lightning arrester, a #3 mother #1 capacitor group, a #3 mother # 2 capacitor group, a #3 mother reactor group, a #4 mother reactor, a #4 mother PT and lightning arrester, a #4 mother #1 capacitor group and a #4 mother # 2 capacitor group.
It can be seen from the figure that when the planning scale is the same, the transverse dimension of the two schemes is 175m, and the longitudinal dimension of the 35kV power distribution device area is 35m and 25.5m when the conventional frame type capacitor and the large capacitance device box type capacitor are adopted, the occupied area can be saved by 1662.5m2 compared with the conventional frame type capacitor, and the method has great significance for areas with limited site or relatively short land resources.
This kind of reactive power compensator arrangement structure of transformer substation based on big capacitance device box capacitor adopts big capacitance device box capacitor can effectively reduce the vertical size in 35kV distribution device district, and the reactive power compensator group counts more, and it is more obvious that it saves to take up an area of the effect, adopts cable junction between the current transformer in the electric capacity group and the electric capacity group simultaneously, and the electric capacity group adopts the inlet wire mode down, and whole electric capacity group does not have outer leakage position, operation safe and reliable.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (3)
1. The utility model provides a transformer substation reactive power compensator arrangement structure based on big capacitance device box capacitor, includes capacitor bank, reactor bank, transformer and bus interval equipment are used in the station, its characterized in that: the capacitor bank comprises a #1 mother #1 capacitor bank (1), a #1 mother #2 capacitor bank (2), a #2 mother #1 capacitor bank (6), a #2 mother #2 capacitor bank (7), a #3 mother #1 capacitor bank (12), a #3 mother #2 capacitor bank (13), a #4 mother #1 capacitor bank (17) and a #4 mother #2 capacitor bank (18), the reactor group comprises a 1 mother reactor group (4), a #2 mother reactor group (5), a #3 mother reactor group (14) and a #4 mother reactor (15), the station transformer comprises a #1 station transformer (9) and a #2 station transformer (10), the bus spacing equipment comprises a #1 female PT and an arrester (3), a #2 female PT and an arrester (8), a #3 female PT and an arrester (11), and a #4 female PT and an arrester (16), and the components (1-18) are sequentially arranged from west to east at intervals: the reactive power compensation device comprises a #1 female #1 capacitor group (1), a #1 female #2 capacitor group (2), a #1 female PT and lightning arrester (3), a #1 female reactor group (4), a #2 female reactor group (5), a #2 female #1 capacitor group (6), a #2 female #2 capacitor group (7), a #2 female PT and lightning arrester (8), a #1 station transformer (9), a #2 station transformer (10), a #3 female PT and lightning arrester (11), a #3 female #1 capacitor group (12), a #3 female #2 capacitor group (13), a #3 female reactor group (14), a #4 female reactor (15), a #4 female PT and lightning arrester (16), a #4 female #1 capacitor group (17) and a #4 female #2 capacitor group (18), so that a transformer substation reactive power compensation device arrangement structure is formed.
2. A substation reactive compensation device arrangement based on large capacitor box capacitors according to claim 1, characterized in that: the capacitor bank is a 60Mvar low-voltage capacitor, the reactor bank is a 60Mvar low-voltage reactor, the spacing width of two adjacent reactor banks is not less than 10125mm, the spacing width of adjacent capacitor banks is not less than 9910mm, and the spacing width between the parallel capacitor bank and the reactor bank is not less than 9455mm.
3. A substation reactive compensation device arrangement based on large capacitor box capacitors according to claim 1, characterized in that: the capacitor bank is a large-capacitance device box-type capacitor, the large-capacitance device box-type capacitor at least comprises an isolating switch, a circuit breaker, a current transformer and a capacitor main part, and the current transformer and the capacitor main part are connected through a cable and are electrically connected in a lower wire inlet mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921047963.1U CN209929984U (en) | 2019-07-04 | 2019-07-04 | Transformer substation reactive power compensation device arrangement structure based on large-capacitance device box-type capacitor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921047963.1U CN209929984U (en) | 2019-07-04 | 2019-07-04 | Transformer substation reactive power compensation device arrangement structure based on large-capacitance device box-type capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865119A (en) * | 2020-12-10 | 2021-05-28 | 国家电网有限公司 | Capacitive reactive high-voltage parallel reactor compensation station for balancing 330kV long-distance cable transmission |
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2019
- 2019-07-04 CN CN201921047963.1U patent/CN209929984U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865119A (en) * | 2020-12-10 | 2021-05-28 | 国家电网有限公司 | Capacitive reactive high-voltage parallel reactor compensation station for balancing 330kV long-distance cable transmission |
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