CN217087166U - Electrical main wiring system for rapid power conversion and supply of 330kV transformer substation - Google Patents
Electrical main wiring system for rapid power conversion and supply of 330kV transformer substation Download PDFInfo
- Publication number
- CN217087166U CN217087166U CN202220338215.4U CN202220338215U CN217087166U CN 217087166 U CN217087166 U CN 217087166U CN 202220338215 U CN202220338215 U CN 202220338215U CN 217087166 U CN217087166 U CN 217087166U
- Authority
- CN
- China
- Prior art keywords
- voltage side
- transformer
- lightning arrester
- wire
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- 239000011787 zinc oxide Substances 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 5
- 230000010354 integration Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The electric main wiring system for the rapid power conversion of the 330kV transformer substation comprises a 330kV vehicle-mounted movable transformer; the high-voltage side of the 330kV vehicle-mounted movable transformer is sequentially connected with an integrated 330kV HGIS type combined electrical appliance and a 330kV bus in a transformer substation through a first lead; the medium-voltage side of the 330kV vehicle-mounted movable transformer is connected with one end of a medium-voltage side lightning arrester through a second wire, and the other end of the medium-voltage side lightning arrester is connected with a 110kV spare outgoing line interval through a power cable; and the low-voltage side of the 330kV vehicle-mounted movable transformer is connected with a low-voltage side lightning arrester through a third wire. Compare with conventional commentaries on classics power supply method, the utility model discloses use the on-vehicle portable transformer of 330kV and integrated 330kV HGIS type combined electrical apparatus to cancelled the idle work equipment of traditional main transformer low pressure side, its advantage is that equipment is small, simple structure, easily arrange, the transportation is convenient, reuse rate is high.
Description
Technical Field
The application relates to the technical field of rapid power conversion and supply of transformer substations, in particular to an electrical main wiring system for rapid power conversion and supply of a 330kV transformer substation.
Background
With the continuous development of social economy, the increase of the power load density is accelerated, and the 330kV transformer substation is used as a hub transformer substation, and the construction, the overhaul and the transformation of the 330kV transformer substation are frequent. Aiming at the normal or emergent situations of the power grid such as capital construction, technical improvement, accidents and the like, the 330kV hub transformer substation has the requirement of rapid load transfer.
The traditional transfer power supply wiring system at present is as follows: building a conventional main transformer, wherein a complete main transformer incoming line interval needs to be newly built on a high-voltage side, and is connected to a bus in a transformer substation through interval equipment; a complete main transformer incoming line interval is required to be newly established on the medium-voltage side and is connected to a bus in a transformer substation through interval equipment; reactive equipment such as a capacitor and a reactor is required to be newly built on the low-voltage side; and is matched with auxiliary facilities for building civil engineering. When the power supply is finished, the equipment is quitted to operate, and related facilities need to be dismantled. The power supply and switching wiring system is long in construction period, low in integration level of main equipment, inconvenient to transport and high in economic cost, and adverse effects are caused on power supply continuity and reliability.
Therefore, a novel power transfer and supply wiring system is urgently needed to solve the problems of long construction period and low equipment integration level of the traditional power transfer and supply wiring system in the field of ultrahigh voltage and large capacity of 330kV voltage class and above.
SUMMERY OF THE UTILITY MODEL
The application provides an electric main wiring system for fast power conversion of a 330kV transformer substation, which aims to solve the problems of long construction period and low equipment integration level of the traditional power conversion and supply wiring system.
The technical scheme adopted by the application is as follows:
the main electrical wiring system is used for fast power conversion and supply of a 330kV transformer substation and comprises a 330kV vehicle-mounted movable transformer;
the high-voltage side of the 330kV vehicle-mounted movable transformer is sequentially connected with an integrated 330kV HGIS type combined electrical appliance and a 330kV bus in a transformer substation through a first lead;
the medium-voltage side of the 330kV vehicle-mounted movable transformer is connected with one end of a medium-voltage side lightning arrester through a second wire, and the other end of the medium-voltage side lightning arrester is connected with a 110kV spare outgoing line interval through a power cable;
and the low-voltage side of the 330kV vehicle-mounted movable transformer is connected with a low-voltage side lightning arrester through a third wire.
Further, the integrated 330kV HGIS-type combined electrical apparatus comprises a high-voltage side lightning arrester, a high-voltage side voltage transformer, a high-voltage side first isolating switch, a high-voltage side current transformer, a high-voltage side circuit breaker, a high-voltage side current transformer and a high-voltage side second isolating switch which are connected in sequence;
the high-voltage side mutual inductor is an electromagnetic mutual inductor; the high-voltage side lightning arrester is a zinc oxide lightning arrester.
Further, the 110kV distribution device with the 110kV spare outgoing line interval is an AIS type, HGIS type or GIS type device;
the type of a current transformer in the 110kV distribution device is the same as that of an original 110kV distribution device in a transformer substation; the current transformer is a capacitor transformer or an electromagnetic transformer; the medium-voltage side lightning arrester in the 110kV power distribution device is a zinc oxide lightning arrester.
Further, the first wire is a LGKK-600 type wire, the second wire is a JNRLH-400 type wire, the power cable is a YJLW02-64/110-1 × 800 cable, and the third wire is a LGJ-70 type wire.
The technical scheme of the application has the following beneficial effects:
compare with conventional commentaries on classics power supply method, the utility model discloses use the on-vehicle portable transformer of 330kV and integrated 330kV HGIS type composite apparatus to cancelled the idle work equipment of traditional main transformer low voltage side, its advantage is that equipment is small, simple structure, easily arrange, the transportation is convenient, reuse rate is high, when the transformer substation carries out capital construction, technical improvement, speedily carries out rescue work, uses electric main wiring system and equipment can effectively reduce and change the power supply and implement the degree of difficulty, reduce the power off time, reduce full life cycle's investment cost, improve electric wire netting safety and stability transition and resist the ability of risk.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electrical main wiring system for fast power conversion of a 330kV substation provided in an embodiment of the present application;
the transformer comprises a 1kV and 330kV vehicle-mounted movable transformer, a 2 kV high-voltage side lightning arrester, a 3kV high-voltage side voltage transformer, a 4kV high-voltage side first isolating switch, a 5kV high-voltage side current transformer, a 6kV high-voltage side circuit breaker, a 7kV high-voltage side current transformer, a 8kV high-voltage side second isolating switch, a 9 kV medium-voltage side lightning arrester, a 10kV low-voltage side lightning arrester and 11 kV and 110kV standby outgoing line intervals.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
Referring to fig. 1, a schematic structural diagram of an electrical main connection system for fast power conversion of a 330kV substation is provided in an embodiment of the present application;
the application provides an electric main wiring system for quick transfer power supply of 330kV transformer substation, the system includes on-vehicle portable transformer 1 of 330kV, and this transformer three side voltage class is 330kV, 110kV, 10kV respectively.
Specifically, the high-voltage side of the 330kV vehicle-mounted mobile transformer 1 is sequentially connected with the integrated 330kV HGIS type combined electrical appliance and the 330kV bus in the transformer substation through a first lead.
The medium-voltage side of the 330kV vehicle-mounted movable transformer 1 is connected with one end of a medium-voltage side lightning arrester 9 through a second lead, and the other end of the medium-voltage side lightning arrester 9 is connected with a 110kV standby outgoing line interval 11 through a power cable.
And the low-voltage side of the 330kV vehicle-mounted movable transformer 1 is connected with a low-voltage side lightning arrester through a third wire.
Electrical distribution devices are a general term for electrical devices that are capable of controlling, receiving, and distributing electrical energy. The power distribution device includes electrical equipment having various functions, such as a bus bar, a circuit breaker, a disconnecting switch, a reactor, a lightning arrester, a transformer, a cable, and the like. Power distribution devices can be classified into the following types according to their switching devices: AIS, HGIS or GIS equipment.
The power distribution device on the high-voltage side (330kV voltage level) selects an integrated 330kV HGIS type combined electrical apparatus, wherein the integrated 330kV HGIS type combined electrical apparatus (namely HGIS type, semi-gas insulated metal closed equipment) comprises a high-voltage side lightning arrester 2, a high-voltage side voltage transformer 3, a high-voltage side first isolating switch 4, a high-voltage side current transformer 5, a high-voltage side circuit breaker 6, a high-voltage side current transformer 7 and a high-voltage side second isolating switch 8 which are sequentially connected; the rated voltage of the high-voltage side circuit breaker 6, the high-voltage side first isolating switch 4 and the high-voltage side second isolating switch 8 is 363kV, the rated current is 3150A, and the short-circuit current level is 50 kA; the high-voltage side current transformer 7 is an electromagnetic transformer; the high-voltage side lightning arrester 2 is a zinc oxide lightning arrester, the rated voltage of the high-voltage side lightning arrester 2 is 300kV, and the residual voltage under 10kA is less than or equal to 727 kV.
The 110kV spare outgoing line interval 11 is original in a transformer substation and is an interval for 110kV outgoing lines. Due to the consideration of the long-term outgoing line, the 110kV standby outgoing line interval 11 is still in a standby state, i.e. the distribution equipment in the interval is already configured in place and no outgoing line exists, so the 110kV standby outgoing line interval 11 can be connected with the medium-voltage side of the 330kV vehicle-mounted mobile transformer 1. The power distribution device in the 110kV standby outgoing line interval 11 is AIS, HGIS or GIS equipment. The air insulated open type equipment is adopted as the AIS type, the gas insulated metal enclosed type equipment is adopted as the GIS type, the semi-gas insulated metal enclosed type equipment is adopted as the HGIS type, the negative problem caused by the overhigh GIS integration level and the problem that the combination occupied area of the AIS unit elements is too large are solved by the HGIS type equipment, and the air insulated open type equipment has the advantages of simple and compact structure, small occupied area and the like. The rated voltage of a circuit breaker and a disconnecting switch in the 110kV distribution device is 126kV, the rated current is 3150A, and the short-circuit current level is 40 kA; the type of a current transformer in the 110kV distribution device is the same as that of a current transformer in the original 110kV distribution device in the transformer substation, and the selected type of the current transformer is a capacitor transformer or an electromagnetic transformer; the medium-voltage side lightning arrester 9 in the 110kV power distribution device is a zinc oxide lightning arrester, the rated voltage of the medium-voltage side lightning arrester 9 is 108kV, and the residual voltage under 10kA is less than or equal to 281 kV.
The low-voltage side (10kV voltage class) of the vehicle-mounted movable transformer 1 is connected with the low-voltage side lightning arrester 10 to operate in a suspended mode, and the low-voltage side lightning arrester is independent of a low-voltage side 35kV power distribution device in an original transformer substation, and low-voltage outgoing lines and reactive power equipment do not need to be increased. In addition, for the selection of the distribution device on the low-voltage side of the 330kV vehicle-mounted movable transformer 1, the extreme condition that the single-phase earth fault cannot be timely removed needs to be considered, in this case, the highest voltage of the low-voltage side to the ground exceeds the rated voltage of a general 10kV lightning arrester, so that the first-order voltage level should be increased, and the low-voltage side lightning arrester 10 with the rated voltage of 34kV is selected.
Furthermore, the selection of the power cable should consider that under the actual application scene, the rapid power supply switching is a load switching mode under special working conditions, so that the consideration of the load transferred during the accident or the maintenance of another main transformer is not needed. Therefore, according to the principle that the current-carrying capacity of the conductor is not less than 1.05 times of the rated capacity of the main transformer, the selection of the conductor and the power cable is as follows by combining data such as corona verification, thermal stability verification and the like: the first wire is an LGKK-600 type wire, the second wire is a JNRLH-400 type wire, the power cable is a YJLW02-64/110-1 x 800 cable, and the third wire is an LGJ-70 type wire.
As shown in table 1, the model and parameters are for a 330kV on-board mobile transformer.
TABLE 1
As shown in table 2, the main devices and their parameters of the integrated 330kV HGIS type combined electrical apparatus.
TABLE 2
As shown in Table 3, the main equipment for the 110kV spare outgoing line interval and the parameters thereof
TABLE 3
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (4)
1. An electric main wiring system for fast power conversion of a 330kV transformer substation is characterized by comprising a 330kV vehicle-mounted movable transformer;
the high-voltage side of the 330kV vehicle-mounted movable transformer is sequentially connected with an integrated 330kV HGIS type combined electrical appliance and a 330kV bus in a transformer substation through a first lead;
the medium-voltage side of the 330kV vehicle-mounted movable transformer is connected with one end of a medium-voltage side lightning arrester through a second wire, and the other end of the medium-voltage side lightning arrester is connected with a 110kV spare outgoing line interval through a power cable; and the low-voltage side of the 330kV vehicle-mounted movable transformer is connected with a low-voltage side lightning arrester through a third wire.
2. The electric main wiring system for fast converting power to 330kV transformer substation of claim 1, wherein the integrated 330kV HGIS type combined electrical apparatus comprises a high-voltage side lightning arrester, a high-voltage side voltage transformer, a high-voltage side first isolating switch, a high-voltage side current transformer, a high-voltage side circuit breaker, a high-voltage side current transformer and a high-voltage side second isolating switch which are connected in sequence;
the high-voltage side current transformer is an electromagnetic transformer; the high-voltage side lightning arrester is a zinc oxide lightning arrester.
3. The main electrical connection system for the rapid switching of a 330kV transformer substation to power supply of claim 1, wherein the 110kV distribution device with the 110kV backup outlet interval is an AIS type, an HGIS type or a GIS type device;
the type of a current transformer in the 110kV distribution device is the same as that of an original 110kV distribution device in a transformer substation; the current transformer is a capacitor transformer or an electromagnetic transformer; the medium-voltage side lightning arrester in the 110kV power distribution device is a zinc oxide lightning arrester.
4. An electrical main junction system for fast turn power at a 330kV substation of claim 1, wherein the first wire is a LGKK-600 type wire, the second wire is a JNRLH-400 type wire, the power cable is a YJLW02-64/110-1 x 800 cable, and the third wire is a LGJ-70 type wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220338215.4U CN217087166U (en) | 2022-02-18 | 2022-02-18 | Electrical main wiring system for rapid power conversion and supply of 330kV transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220338215.4U CN217087166U (en) | 2022-02-18 | 2022-02-18 | Electrical main wiring system for rapid power conversion and supply of 330kV transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217087166U true CN217087166U (en) | 2022-07-29 |
Family
ID=82544412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220338215.4U Active CN217087166U (en) | 2022-02-18 | 2022-02-18 | Electrical main wiring system for rapid power conversion and supply of 330kV transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217087166U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20250105621A1 (en) * | 2023-09-27 | 2025-03-27 | Saudi Arabian Oil Company | Short-circuit current control in power systems |
| CN120497911A (en) * | 2025-06-25 | 2025-08-15 | 中国能源建设集团陕西省电力设计院有限公司 | Multi-voltage-domain rapid power conversion and supply system of transformer substation and control method |
-
2022
- 2022-02-18 CN CN202220338215.4U patent/CN217087166U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20250105621A1 (en) * | 2023-09-27 | 2025-03-27 | Saudi Arabian Oil Company | Short-circuit current control in power systems |
| US12706454B2 (en) * | 2023-09-27 | 2026-08-11 | Saudi Arabian Oil Company | Short-circuit current control in power systems |
| CN120497911A (en) * | 2025-06-25 | 2025-08-15 | 中国能源建设集团陕西省电力设计院有限公司 | Multi-voltage-domain rapid power conversion and supply system of transformer substation and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104143775B (en) | A kind of power electronic transformer substation | |
| CN206099127U (en) | 110kV vehicle -mounted movable type transformer substation | |
| CN111030118B (en) | Island power transmission system and control method thereof | |
| CN112332225A (en) | 230kV and 115kV double-voltage output system of mobile floating combined cycle power generation ship | |
| Long et al. | Consideration for implementing multiterminal DC systems | |
| CN210957782U (en) | 35kV transformer substation sectional bus system based on mixed superconducting current limiter | |
| CN204030390U (en) | One power electronics transformer station | |
| CN214204938U (en) | Power plant substation based on improved bridge type high-temperature superconducting current limiter | |
| CN210927126U (en) | Little grid system of alternating current-direct current for wisdom energy station | |
| CN107240884B (en) | Distribution device HGIS equipment's arrangement structure | |
| CN212114724U (en) | 10kV fixed AC ice melting device | |
| CN218897086U (en) | 330KV long-distance line-changing quick power-transferring electric main wiring structure | |
| CN221328448U (en) | An electrical main connection structure suitable for a large offshore booster station with three main transformers | |
| CN215579753U (en) | High-voltage station service electric wiring structure for small-sized thermal power plant | |
| CN205029185U (en) | Movable substation's electrical connection structure | |
| CN119171509A (en) | 35kV voltage level large load power supply system and substation | |
| CN217281685U (en) | 50MW 110kV new forms of energy booster station system | |
| CN217769251U (en) | Distribution device arrangement structure for realizing rapid power supply conversion of ultrahigh voltage transformer substation | |
| CN113708280B (en) | A high-voltage cable compensation station wiring system | |
| CN214589742U (en) | 230kV and 115kV double-voltage output system of mobile floating combined cycle power generation ship | |
| CN213367424U (en) | Main wiring device of flexible substation in AC and DC distribution network | |
| CN213959761U (en) | Reactive power compensation device | |
| RU117732U1 (en) | HIGH VOLTAGE DISTRIBUTION DEVICE | |
| CN201868854U (en) | GIS (gas insulated switchgear) structure changing 500KV main power supply into 66KV side power supply | |
| CN221886045U (en) | Wind-solar energy storage inversion energy-saving voltage-stabilizing power supply system for urban rail transit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |