CN104009498A - Device for automatically controlling transformer to be put into and quit operation - Google Patents
Device for automatically controlling transformer to be put into and quit operation Download PDFInfo
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- CN104009498A CN104009498A CN201410270460.6A CN201410270460A CN104009498A CN 104009498 A CN104009498 A CN 104009498A CN 201410270460 A CN201410270460 A CN 201410270460A CN 104009498 A CN104009498 A CN 104009498A
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- transformer
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- electromagnetic relay
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Abstract
The invention discloses a device for automatically controlling a transformer to be put into and quit operation and relates to the field of electrical engineering. The device for automatically controlling the transformer to be put into and quit the operation aims to solve the problem that energy consumption is large when the transformer is in low-load operation and no-load operation. The device for automatically controlling the transformer to be put into and quit the operation is mounted between incoming buses and the controlled transformer, a control system sets a load current threshold value of the long-term operated transformer, when the load of the transformer reaches the set value, and currents in a current inductor reaches a fixed value, an electromagnetic relay is controlled to switch on a vacuum switch, the transformer needed to be controlled is started, and loads are borne jointly by the two transformers. When multiple transformers operate in parallel, the transformers are started in sequence according to the parallel connection sequence. When the loads decline to below the current threshold value, the current of the current inductor drops, the electromagnetic relay switches off the vacuum switch, and the loads are bone through a long-time operating transformer. The device for automatically controlling the transformer to be put into and quit the operation is applied to the field of electrical engineering.
Description
Technical field
The present invention relates to electric field.
Background technology
Now in modernization city-building, many residential quarters construction scale is large, moves in and has a large population, and power demands is larger, and electric power system is the requirement of the convenient and swift and power supply reliability of operating maintenance, and supply transformer is designed to many parallel operation of transformers.The mechanics of mankind's daily life, makes power load larger variation in 24 hours, and the morning, noon and afternoon load of peak of power consumption is the highest, and other times are lower, there will be especially zero load electricity consumption situation at night.Now transformer is in no-load running state, and no-load loss is larger, wastes energy.
Summary of the invention
The present invention is in order to solve transformer underload, problem that zero load no-load running energy resource consumption is large, thereby provide, a kind of automatic control transformer drops into, device out of service.
Automatic control transformer drops into, device out of service, and it comprises current inductor 1, swept resistance 2, electromagnetic relay 3, vacuum switch 4 and delay regulating device 5;
The signal output part of current inductor 1 connects a stiff end of swept resistance 2, the adjustable end of swept resistance 2 is connected the signal input part of delay regulating device 5 with a stiff end, the signal output part of described delay regulating device 5 connects the induction coil of electromagnetic relay 3, the inductive switch of described electromagnetic relay 3 and vacuum switch 4 series connection.
The invention has the beneficial effects as follows: the present invention is arranged between inlet wire bus and control transformer, control system is set long-time running transformer load current margin value, when transformer load reaches set point, in current inductor, electric current reaches definite value, control electromagnetic relay vacuum switch is closed, start and need control transformer, load is by two transformer shareds.During many transformers connected in parallel operations, by shunt sequence, start successively.When load declines, reach current margin value when following, current inductor electric current declines, and electromagnetic relay disconnects vacuum switch, loads and is born by long-time running transformer.For avoiding electromagnetic relay frequent starting vacuum switch, shorten its useful life, in control loop, set up delay regulating device, load current drops to below rated current boundary value, and this device started, disconnected corresponding transformer stable operation a period of time, made transformer underload, zero load no-load running energy resource consumption reduce on year-on-year basis 20%.
Accompanying drawing explanation
Fig. 1 is that automatic control transformer drops into, the overall structure figure of device out of service;
Fig. 2 is that automatic control transformer drops into, the installation site figure of device out of service.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, automatic control transformer described in present embodiment drops into, device out of service, and it comprises current inductor 1, swept resistance 2, electromagnetic relay 3, vacuum switch 4 and delay regulating device 5;
The signal output part of current inductor 1 connects a stiff end of swept resistance 2, the adjustable end of swept resistance 2 is connected the signal input part of delay regulating device 5 with a stiff end, the signal output part of described delay regulating device 5 connects the induction coil of electromagnetic relay 3, the inductive switch of described electromagnetic relay 3 and vacuum switch 4 series connection.
In present embodiment, as shown in Figure 2, for 2 and above transformer change platform or switchgear house that paired running is installed, one director's phase operating transformer is set, this device is arranged on to inlet wire bus and needs between control transformer, current inductor 1 is arranged on any one wire, it is that 70% of long-time running transformer rated load is set that swept resistance 2 is set current margin value numerical value, and the current value of received current inductor transmission, when electric current higher or lower than setting, current inductor is controlled electromagnetic relay and is divided, closes vacuum switch 4.
Current inductor 1 Real-Time Monitoring current in wire changes, and current inductor passes to electromagnetic relay 2 by the electric current measuring.When current margin value that electric current is set higher than control system, electromagnetic relay starts, and by vacuum switch 4 closures, starts control transformer, and load is by two transformer shareds.During many transformers connected in parallel, by shunt sequence, start successively.
When current margin value that load current is set lower than control system, electromagnetic relay disconnects vacuum switch 4, and load is born by long-time running transformer.
For avoiding mechanical device frequent starting vacuum switch, shorten its useful life, in control loop, set up delay regulating device 5, when current margin value that load current is set lower than control system, delay function is controlled electromagnetic relay opening time by setting delay time, to guarantee that load current is after plateau, vacuum switch is disconnected, avoid load fluctuation frequently to divide, close vacuum switch, reduce service life.
Embodiment two: present embodiment is further qualified the automatic control transformer input described in embodiment one, device out of service, in present embodiment, current inductor 1 gathers the electric current of a phase in three phase mains.
Claims (2)
1. automatic control transformer input, device out of service, is characterized in that: it comprises current inductor (1), swept resistance (2), electromagnetic relay (3), vacuum switch (4) and delay regulating device (5);
The signal output part of current inductor (1) connects a stiff end of swept resistance (2), the adjustable end of swept resistance (2) is connected the signal input part of delay regulating device (5) with a stiff end, the signal output part of described delay regulating device (5) connects the induction coil of electromagnetic relay (3), the inductive switch of described electromagnetic relay (3) and vacuum switch (4) series connection.
2. automatic control transformer input according to claim 1, device out of service, is characterized in that: current inductor (1) gathers the electric current of a phase in three phase mains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410270460.6A CN104009498A (en) | 2014-06-17 | 2014-06-17 | Device for automatically controlling transformer to be put into and quit operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410270460.6A CN104009498A (en) | 2014-06-17 | 2014-06-17 | Device for automatically controlling transformer to be put into and quit operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104009498A true CN104009498A (en) | 2014-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410270460.6A Pending CN104009498A (en) | 2014-06-17 | 2014-06-17 | Device for automatically controlling transformer to be put into and quit operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104009498A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080179966A1 (en) * | 2007-01-30 | 2008-07-31 | Sanyo Electric Co., Ltd. | Grid interconnection device, grid interconnection system, and electric power control system |
| CN201312128Y (en) * | 2008-11-26 | 2009-09-16 | 陈家斌 | Loss-reducing and electricity-saving automatic switching device for power transformer |
| CN203871875U (en) * | 2014-06-17 | 2014-10-08 | 国家电网公司 | Automatic control transformer operation starting and quitting device |
-
2014
- 2014-06-17 CN CN201410270460.6A patent/CN104009498A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080179966A1 (en) * | 2007-01-30 | 2008-07-31 | Sanyo Electric Co., Ltd. | Grid interconnection device, grid interconnection system, and electric power control system |
| CN201312128Y (en) * | 2008-11-26 | 2009-09-16 | 陈家斌 | Loss-reducing and electricity-saving automatic switching device for power transformer |
| CN203871875U (en) * | 2014-06-17 | 2014-10-08 | 国家电网公司 | Automatic control transformer operation starting and quitting device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140827 |