CN201750047U - Control circuit of 24KV box-type transformer substation - Google Patents
Control circuit of 24KV box-type transformer substation Download PDFInfo
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- CN201750047U CN201750047U CN2010202715523U CN201020271552U CN201750047U CN 201750047 U CN201750047 U CN 201750047U CN 2010202715523 U CN2010202715523 U CN 2010202715523U CN 201020271552 U CN201020271552 U CN 201020271552U CN 201750047 U CN201750047 U CN 201750047U
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Abstract
The utility model relates to a control circuit of a 24KV box-type transformer substation, comprising a high-voltage wire feeding unit, a high-voltage annular-net wire-out unit, a high-voltage wire-out unit, a transformer unit, a low-voltage wire-in unit, a low-voltage wire-out unit and a low-voltage capacitance compensation unit, wherein an external power supply of the 24KV is connected with the wire-in end of the high-voltage wire-in unit; the wire-out end of the high-voltage wire-in unit is connected with the high-voltage annular-net wire-out unit and the high-voltage wire-out unit respectively; the wire-out end of the high-voltage wire-out unit is connected with the wire-in end of the transformer unit; the wire-out end of the transformer unit is connected with the low-voltage wire-in unit; and the wire-out end of the low-voltage wire-in unit is connected with the low-voltage wire-out unit and the low-voltage capacitance compensation unit respectively. The control circuit has the advantages that the design is reasonable, the power supply capability of a transformer substation system is improved, the quality of the power supply voltage is ensured, the electric energy loss of a power grid is reduced, the construction expense of the power grid is saved, the automatic remote control function of the transformer substation is realized, and the control circuit can be widely used for power users with the alternate current working voltage of 24KV.
Description
Technical field
The utility model belongs to the transformer station field, especially a kind of 24KV box type transformer substation monitoring system.
Background technology
At present, China's utility distribution system mainly adopts 10kV as distribution voltage.Along with China's rapid economy development, power load sharply increases, and can not satisfy local growth requirement in some regional 10kV power supplies.Because expanding economy must cause the upgrading of power distribution network voltage, compare with traditional 10kV power distribution network, 24KV power distribution network voltage not only can increase power supply capacity, can reduce transformer station and circuit cloth dot density effectively, make things convenient for the client to insert, advantages such as large user's benefit is outstanding, and saving energy and decreasing loss considerable benefit, environmental benefit is outstanding.According to measuring and calculating, carry same constant power, the non-ferrous metal consumption of 24KV supply line can reduce 50%, saves construction investment about 40% etc.In the national standard " normal voltage " of China with 24KV as the normal voltage grade, many provinces and cities have begun the construction of 24KV medium voltage distribution network system, the thing followed is the demand to the 24KV box-type substation.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of reasonable in design, improve power supply capacity, reduce electric energy loss and save the 24KV box-type substation control circuit of power grid construction cost.
The utility model solves its technical problem and takes following technical scheme to realize:
A kind of 24KV box-type substation control circuit, comprise the high pressure wire inlet unit, high pressure ring outlet unit, the high-voltage terminal unit, transformer unit, the low pressure wire inlet unit, low pressure outlet unit and low-voltage capacitance compensating unit, the 24KV external power source is linked into the end of incoming cables of high pressure wire inlet unit, the leading-out terminal of high pressure wire inlet unit is connected with high pressure ring outlet unit and high-voltage terminal unit respectively, the leading-out terminal of high-voltage terminal unit is connected with the end of incoming cables of transformer unit, the leading-out terminal of transformer unit is connected with the low pressure wire inlet unit, and the leading-out terminal of low pressure wire inlet unit is connected with low pressure outlet unit and low-voltage capacitance compensating unit respectively.
And described low pressure outlet unit is 1 to 5.
And, described high pressure wire inlet unit comprises high-tension current inductor and the high voltage load switch that is connected on the end of incoming cables successively, in the bypass of end of incoming cables, also be parallel with high-tension fuse, high-voltage charge display device and lightning arrester, connect a high-voltage signal acquisition module at the secondary connection end of high pressure wire inlet unit.
And, described high pressure ring outlet unit comprises the high voltage load switch and the high-tension current inductor of series connection successively, also connect a high-voltage charge display device in the bypass behind the high-tension current inductor, the secondary connection end in high pressure ring outlet unit connects a high-voltage signal acquisition module.
And, described high-voltage terminal unit comprises high voltage load switch, high-tension fuse and the high-tension current inductor of series connection successively, also connect a high-voltage charge display device in the bypass behind the high-tension current inductor, the secondary connection end in the high-voltage terminal unit connects a high-voltage signal acquisition module.
And described transformer unit comprises the SCB10-800/20-0.4Dyn11 transformer, is connected with the intelligent temperature control module at the secondary connection end of this transformer.
And described low pressure wire inlet unit comprises successively the intelligent low-pressure circuit breaker summation current transformer of series connection, is connected with intelligence load communication unit and bus temperature protection module at the secondary connection end of low pressure wire inlet unit.
And described low pressure outlet unit comprises three-phase circuit: every circuitry phase includes the intelligent low-pressure circuit breaker summation current transformer of series connection successively.
And, described low-voltage capacitance compensating device comprises isolating switch fuse, current transformer, high breaking midget fuse, A.C. contactor and the power capacitor of series connection successively, connects a lightning arrester in the bypass between current transformer and the high breaking midget fuse.
Advantage of the present utility model and good effect are:
1, this transformer station control circuit is upgraded to 24KV with medium voltage distribution network voltage by 10kV, thereby realized 24KV transformer station function, make power supply capacity increase, carrying identical power, using the lead of same cross-sectional and guarantee under the condition of quality of voltage, fed distance can be far away 1 times, and supply district (area) increases 4 times; If under same radius of electricity supply condition, use the lead of same cross-sectional, transmission power can increase by 1 times.
2, this transformer station control circuit has been realized 24KV transformer station function, is carrying under the same power condition, and line current can reduce 50%, and then the circuit electric energy loss can reduce by 75%, has reduced the electric energy loss of electrical network.
3, this transformer station control circuit has been realized 24KV transformer station function, has reduced transformer station and circuit cloth dot density effectively, has made things convenient for user's access, has solved the cities and towns electric load and has increased the problem of being brought, and has satisfied the need for electricity in cities and towns.
4, the utility model is reasonable in design, improved the power supply capacity of power transformation system, guaranteed the quality of supply power voltage, reduced the electric energy loss of electrical network, saved the construction cost of electrical network, realized the automatic remote control function of transformer station, can be widely used in working volts alternating currents such as residential quarters, building construction, station, harbour, harbour, industrial and mining enterprises is the power consumer of 24kV, frequency 50 (60) Hz.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 A is partial circuit figure of the present utility model (high-tension circuit and a transformer portion);
Fig. 2 B is partial circuit figure of the present utility model (a low-voltage circuit part).
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is further described:
A kind of 24KV box-type substation control circuit as shown in Figure 1, comprises high pressure wire inlet unit, high pressure ring outlet unit, high-voltage terminal unit, transformer unit, low pressure wire inlet unit, low pressure outlet unit and low-voltage capacitance compensating unit.The 24KV external power source is linked into the end of incoming cables of high pressure wire inlet unit, the leading-out terminal of high pressure wire inlet unit is connected with high pressure ring outlet unit and high-voltage terminal unit respectively, high pressure ring outlet unit can be connected to form the ring network power supply system with other electric power systems electric energy is sent to other electric power system, and high pressure ring outlet unit also can be used as the standby wire inlet unit of transformer station; The leading-out terminal of high-voltage terminal unit is connected with the end of incoming cables of transformer unit, is 0.4kV by transformer unit with the 24KV voltage transition, and send into the low pressure wire inlet unit by the leading-out terminal of transformer unit, the leading-out terminal of low pressure wire inlet unit is connected with low pressure outlet unit and low-voltage capacitance compensating unit respectively, low pressure outlet unit can provide required civil power for the user, and the quantity of low pressure outlet unit can dispose a plurality of according to actual needs; The low-voltage capacitance compensating unit can carry out dynamic auto compensation to power factor, makes the low-pressure system power factor reach the power supply department requirement, forms complete power supply-distribution system.
Circuit diagram with Fig. 2 A and Fig. 2 B is described further 24KV box-type substation control circuit below.Among the figure, H1, H2, H3, H4, D5, D6, D7, D8 represent high pressure wire inlet unit, high pressure ring outlet unit, high-voltage terminal unit, transformer unit, low pressure wire inlet unit, low pressure outlet unit and low-voltage capacitance compensating unit respectively.The high pressure wire inlet unit comprises high-tension current inductor LZZBJ9-24200/5 and the high voltage load switch FLN36-24/630 that is connected on the end of incoming cables successively, in the bypass of end of incoming cables, also be parallel with high-tension fuse XRNP-240.5A, high-voltage charge display device DXN8D-20/Q and lightning arrester HY5WS-26/66, the other end of high-voltage charge display device DXN8D-20/Q and lightning arrester HY5WS-26/66 is connected with ground wire respectively, connects a high-voltage signal acquisition module ST400H at the secondary connection end of high pressure wire inlet unit.High pressure ring outlet unit comprises the high voltage load switch FLN36-24D/630 and the high-tension current inductor LZZBJ9-24150/5 of series connection successively, also connect a high-voltage charge display device DXN8D-20/T in the bypass behind the high-tension current inductor LZZBJ9-24 150/5, the secondary connection end in high pressure ring outlet unit connects a high-voltage signal acquisition module ST400H.The high-voltage terminal unit comprises high voltage load switch FLN36-24D/100, high-tension fuse XRNP-24 40A and the high-tension current inductor LZZBJ9-2450/5 of series connection successively, also connect a high-voltage charge display device DXN8D-20/T in the bypass behind the high-tension current inductor LZZBJ9-24 50/5, the secondary connection end in the high-voltage terminal unit connects a high-voltage signal acquisition module ST400H; Transformer unit adopts the SCB10-800/20-0.4Dyn11 transformer, is connected with intelligent temperature control module BWDK at the secondary connection end of transformer unit.The low pressure wire inlet unit comprises successively intelligent low-pressure circuit breaker HSW1-2000H/1600A summation current transformer BH-0.66 1500/5 80II of series connection, is connected with intelligence load communication unit ST6000 and bus temperature protection module JWD1M at the secondary connection end of low pressure wire inlet unit.The leading-out terminal of low pressure wire inlet unit can connect one or more low pressure outlets unit, in the present embodiment, two low pressure outlet unit have been comprised, each low pressure outlet unit includes three-phase circuit: every circuitry phase includes the intelligent low-pressure circuit breaker summation current transformer of series connection successively, intelligent low-pressure circuit breaker in the three-phase circuit is respectively HSM1Z-250/250M, HSM1Z-400/400M and HSM1Z-250/250M, and the current transformer in the three-phase circuit is respectively LMZJ1-0.66250/5, LMZJ1-0.66400/5 and LMZJ1-0.66250/5.The low-voltage capacitance compensating device comprises isolating switch fuse QSA-630/3P 500A, current transformer BH-0.66600/540II, high breaking midget fuse HSM8-D63/3P, A.C. contactor HSC1-40C and the power capacitor BCMJ0.4-30-3 of series connection successively, connect a lightning arrester HY1.5W-0.28/1.3 in the bypass between current transformer BH-0.66 600/5 40II and the high breaking midget fuse HSM8-D63/3P, the other end of this lightning arrester HY1.5W-0.28/1.3 is connected with ground wire.
Be connected the high-voltage signal acquisition module ST400H of secondary connection end, intelligent temperature control module BWDK, bus temperature protection module JWD1M and intelligent low-pressure circuit breaker and reactive power compensation control module are connected with intelligence load communication unit ST6000 by the RS485 bus respectively, ST6000 is responsible for gathering and the handle high voltages signal acquisition module by intelligence load communication unit, the bus temperature protective device, the intelligent low-pressure circuit breaker, the signal of telecommunication that idle compensating control sends, and realize " four is distant " controlled function by the touch-screen of intelligence load communication unit ST6000: telemetry function can remote measurement centralized displaying electric current, voltage, power, parameters such as temperature; The remote signalling function can the telemonitoring switch operating state, distant control function can deciliter start-stop of process control switch etc. operating state, the remote regulating function can long-range setting and is adjusted the running parameter etc. of switch.
Operation principle of the present utility model is: the 24KV external power source is linked into the end of incoming cables of high pressure wire inlet unit, the leading-out terminal of high pressure wire inlet unit is connected with high pressure ring outlet unit and can be used as the ring network power supply system electric energy is sent to other electric power system, also can be used as the standby wire inlet unit of box-type substation; The leading-out terminal of high pressure wire inlet unit also is connected with the end of incoming cables of high-voltage terminal unit, the leading-out terminal of high-voltage terminal unit is connected with transformer unit, 24KV voltage is become 0.4kV and send into the end of incoming cables of low pressure wire inlet unit by transformer unit, the leading-out terminal of low pressure wire inlet unit is connected to low pressure outlet unit and low-voltage capacitance compensating unit, the low-voltage capacitance compensating unit can carry out dynamic auto compensation to power factor, make the low-pressure system power factor reach the power supply department requirement, form complete power supply-distribution system.
It is emphasized that; embodiment described in the utility model is illustrative; rather than it is determinate; therefore the utility model is not limited to the embodiment described in the embodiment; every by those skilled in the art according to other execution modes that the technical solution of the utility model draws, belong to the scope of the utility model protection equally.
Claims (9)
1. 24KV box-type substation control circuit, it is characterized in that: comprise the high pressure wire inlet unit, high pressure ring outlet unit, the high-voltage terminal unit, transformer unit, the low pressure wire inlet unit, low pressure outlet unit and low-voltage capacitance compensating unit, the 24KV external power source is linked into the end of incoming cables of high pressure wire inlet unit, the leading-out terminal of high pressure wire inlet unit is connected with high pressure ring outlet unit and high-voltage terminal unit respectively, the leading-out terminal of high-voltage terminal unit is connected with the end of incoming cables of transformer unit, the leading-out terminal of transformer unit is connected with the low pressure wire inlet unit, and the leading-out terminal of low pressure wire inlet unit is connected with low pressure outlet unit and low-voltage capacitance compensating unit respectively.
2. 24KV box-type substation control circuit according to claim 1 is characterized in that: described low pressure outlet unit is 1 to 5.
3. 24KV box-type substation control circuit according to claim 1, it is characterized in that: described high pressure wire inlet unit comprises high-tension current inductor and the high voltage load switch that is connected on the end of incoming cables successively, in the bypass of end of incoming cables, also be parallel with high-tension fuse, high-voltage charge display device and lightning arrester, connect a high-voltage signal acquisition module at the secondary connection end of high pressure wire inlet unit.
4. 24KV box-type substation control circuit according to claim 1, it is characterized in that: described high pressure ring outlet unit comprises the high voltage load switch and the high-tension current inductor of series connection successively, also connect a high-voltage charge display device in the bypass behind the high-tension current inductor, the secondary connection end in high pressure ring outlet unit connects a high-voltage signal acquisition module.
5. 24KV box-type substation control circuit according to claim 1, it is characterized in that: described high-voltage terminal unit comprises high voltage load switch, high-tension fuse and the high-tension current inductor of series connection successively, also connect a high-voltage charge display device in the bypass behind the high-tension current inductor, the secondary connection end in the high-voltage terminal unit connects a high-voltage signal acquisition module.
6. 24KV box-type substation control circuit according to claim 1, it is characterized in that: described transformer unit comprises the SCB10-800/20-0.4Dyn11 transformer, is connected with the intelligent temperature control module at the secondary connection end of this transformer.
7. 24KV box-type substation control circuit according to claim 1; it is characterized in that: described low pressure wire inlet unit comprises successively the intelligent low-pressure circuit breaker summation current transformer of series connection, is connected with intelligence load communication unit and bus temperature protection module at the secondary connection end of low pressure wire inlet unit.
8. 24KV box-type substation control circuit according to claim 1 and 2 is characterized in that: described low pressure outlet unit comprises three-phase circuit: every circuitry phase includes the intelligent low-pressure circuit breaker summation current transformer of series connection successively.
9. 24KV box-type substation control circuit according to claim 1, it is characterized in that: described low-voltage capacitance compensating device comprises isolating switch fuse, current transformer, high breaking midget fuse, A.C. contactor and the power capacitor of series connection successively, connects a lightning arrester in the bypass between current transformer and the high breaking midget fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202715523U CN201750047U (en) | 2010-07-27 | 2010-07-27 | Control circuit of 24KV box-type transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202715523U CN201750047U (en) | 2010-07-27 | 2010-07-27 | Control circuit of 24KV box-type transformer substation |
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| Publication Number | Publication Date |
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| CN201750047U true CN201750047U (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202715523U Expired - Fee Related CN201750047U (en) | 2010-07-27 | 2010-07-27 | Control circuit of 24KV box-type transformer substation |
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| CN (1) | CN201750047U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682224A (en) * | 2014-12-30 | 2015-06-03 | 国家电网公司 | Fast-moving power distribution integral device |
| CN110212440A (en) * | 2019-06-04 | 2019-09-06 | 海鸿电气有限公司 | A kind of small-sized preassembled transformer station |
| CN114094452A (en) * | 2021-11-18 | 2022-02-25 | 安徽广远智能电力装备制造有限公司 | All-insulated intelligent thing allies oneself with horizontal integrative high pressure combination of thing becomes |
-
2010
- 2010-07-27 CN CN2010202715523U patent/CN201750047U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682224A (en) * | 2014-12-30 | 2015-06-03 | 国家电网公司 | Fast-moving power distribution integral device |
| CN110212440A (en) * | 2019-06-04 | 2019-09-06 | 海鸿电气有限公司 | A kind of small-sized preassembled transformer station |
| CN114094452A (en) * | 2021-11-18 | 2022-02-25 | 安徽广远智能电力装备制造有限公司 | All-insulated intelligent thing allies oneself with horizontal integrative high pressure combination of thing becomes |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20190727 |
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| CF01 | Termination of patent right due to non-payment of annual fee |