CN103531330A - Method for achieving charged oil supplement of load switch - Google Patents
Method for achieving charged oil supplement of load switch Download PDFInfo
- Publication number
- CN103531330A CN103531330A CN201210417558.0A CN201210417558A CN103531330A CN 103531330 A CN103531330 A CN 103531330A CN 201210417558 A CN201210417558 A CN 201210417558A CN 103531330 A CN103531330 A CN 103531330A
- Authority
- CN
- China
- Prior art keywords
- oil
- loaded switch
- filtering apparatus
- load switch
- fresh
- 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.)
- Pending
Links
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
Provided is a method for achieving charged oil supplement of a load switch. An oil pump of an oil filter device is used for achieving charged oil supplement of the load switch, the flow rate is 3L/min, oil has small impact when passing through a gas relay, and false operation is difficult to cause; in an oil supplement process, the new oil is controlled strictly, and gas is prevented from entering the load switch. By the adoption of the method, oil supplement control is simple, sufficient consideration is given to influence on the gas relay of the load switch caused by oil streams and gas streams during oil supplement, and an implementation process is simple and convenient to achieve.
Description
Technical field
The present invention relates to field transformer, especially a kind of method of loaded switch live line oil make-up.
Background technology
On-load tap-changing transformer is requisite equipment in modern power network, in electrical network for the contact of inverse regulation voltage, electrical network, without the distribution of work and adjust load trend, its operation conditions directly affects the normal operation of system reliability of operation and other electric equipments.Loaded switch is that transformer is realized load tapchanging key equipment, must guarantee that loaded switch oil conservator oil level is normal before pressure regulation, once oil starvation or must carry out in time repairing quiescing without oil.As operation by force, the electric arc that in operating process, contact produces cannot extinguish, and will cause a large amount of gas and transformer oil to rush at oil conservator and make Buchholz relay action, causes transformer tripping; Meanwhile, the energy being produced by electric arc, if cannot be discharged in time, will likely cause even main transformer blast of loaded switch, the safety of serious threat electrical network.The conventional way of loaded switch repairing is to carry out in the situation that main transformer has a power failure, and main transformer has a power failure inevitably needs to carry out load adjustment, and repeatedly grid switching operation will bring certain risk.
Summary of the invention
The shortcoming that need to carry out in the situation that main transformer has a power failure for current loaded switch repairing, the scheme of dealing with problems that the present invention proposes is: the oil pump that utilizes oil-filtering apparatus is loaded switch live line oil make-up, adopt flow 3L/min, impact during oil process Buchholz relay is little, is difficult for misoperation; In repairing process, strictly control fresh oil, prevent that gas from entering in loaded switch.
The invention has the beneficial effects as follows: not only control simply, oil stream, the impact of air-flow on loaded switch Buchholz relay while taking into full account repairing, and also implementation process is simple, and convenient.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further detailed.
Fig. 1 is loaded switch live line oil make-up schematic diagram.
Wherein, 1. oil conservator; 2. Buchholz relay; 3. valve; 4. grease chamber; 5. respirator; 6. new oil vessel; 7. filter core; 8. pump; 9. motor; 10. oil exit pipe; 11. oil-filtering apparatus.
Embodiment
With Three-phase oil immersion type on-load tap-changing transformer, its model is SFS29-180000/220, voltage is combined as (220+1061.5%)/115/10.5kV, rated capacity is that 180MVA/180MVA/60MVA. loaded switch model is MIII600Y-123-D, on-line oil filter model is XS2-1, and oily Flow Velocity is that 3L/min is example.
1. analyze: during because of repairing process Buchholz relay, when flow velocity is greater than 1.2m/s, the about 31.8L/min of corrected flow, the Buchholz relay misoperation of loaded switch, causes main transformer three side switch trips.
The charged oil pump repairing operation principle of utilizing oil-filtering apparatus as shown in Figure 1, loaded switch enters the top that oil pipe is positioned at loaded switch fuse grease chamber (4), during repairing, first by entering oil pipe, fill grease chamber (4), then through Buchholz relay (2) and enter oil pipe to oil conservator (1) repairing, now flow 3L/min, flow is little, impact during oil process Buchholz relay (2) is little, be difficult for misoperation, and oil-filtering apparatus (11) is convenient to exhaust and control.
2. implementation step: (1) confirms safety measure: exit heavily protection power supply of loaded switch, exit loaded switch operating power.
(2) measure the secondary contact of oil level gauge, be confirmed whether that oneself posts a letter, measuring and protecting voltage, checks Buchholz relay (2).
(3) confirm that loaded switch is connected with oil-filtering apparatus (11) enter, oil exit pipe (10) valve (3) in off position, take oil-filtering apparatus (11) apart into and out of oil pipe, unclamp the connecting bolt of loaded switch respirator (5) and oil conservator (1) pipeline.
(4) check loaded switch and oil-filtering apparatus (11) adpting flange place cushion rubber.
(5) oil-filtering apparatus (11) oil inlet pipe inserts in fresh oil by flange connector connection plastic sebific duct, by the first exhaust of oil-filtering apparatus (11), then the flowline of oil-filtering apparatus (11) is connected with the oil pipe that enters of loaded switch, open and connect valve (3), loaded switch is refueled; Whole refueling process will guarantee that the Inserting Tube in fresh oil is immersed in the fresh oil of new oil vessel (6) completely, prevents that air from entering, once there is bubble, at any time by the vent valve exhaust of oil-filtering apparatus (11).
(6) according to the oil level/temperature curve of loaded switch, switch is refueled, treat that oil level puts in place, stop refueling.
(7) take the connector of oil-filtering apparatus (11) oil inlet pipe apart, oil-filtering apparatus (11) oil inlet pipe and loaded switch oil exit pipe are connected and fixed.
(8), finally by oil-filtering apparatus (11) exhaust, the mode that can move limit exhaust by edge point is carried out, and stops exhaust after without bubble.
Claims (2)
1. a method for loaded switch live line oil make-up, is characterized in that: the oil pump that utilizes oil-filtering apparatus is loaded switch live line oil make-up, adopts flow 3L/min, and impact during oil process Buchholz relay is little, is difficult for misoperation; In repairing process, strictly control fresh oil, prevent that gas from entering in loaded switch.
2. the method for loaded switch live line oil make-up according to claim 1, it is characterized in that: oil-filtering apparatus (11) oil inlet pipe inserts in fresh oil by flange connector connection plastic sebific duct, by the first exhaust of oil-filtering apparatus (11), then the flowline of oil-filtering apparatus (11) is connected with the oil pipe that enters of loaded switch, open and connect valve (3), loaded switch is refueled; Whole refueling process will guarantee that the Inserting Tube in fresh oil is immersed in the fresh oil of new oil vessel (6) completely, prevents that air from entering, once there is bubble, at any time by the vent valve exhaust of oil-filtering apparatus (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210417558.0A CN103531330A (en) | 2012-10-29 | 2012-10-29 | Method for achieving charged oil supplement of load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210417558.0A CN103531330A (en) | 2012-10-29 | 2012-10-29 | Method for achieving charged oil supplement of load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103531330A true CN103531330A (en) | 2014-01-22 |
Family
ID=49933267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210417558.0A Pending CN103531330A (en) | 2012-10-29 | 2012-10-29 | Method for achieving charged oil supplement of load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103531330A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261455A (en) * | 2015-11-06 | 2016-01-20 | 国网黑龙江省电力有限公司检修公司 | Transformer with simple apparatus for filling oil and exhausting air in charged state, and method for filling oil and exhausting air |
| CN112086270A (en) * | 2020-09-01 | 2020-12-15 | 广东电网有限责任公司佛山供电局 | Differential pressure charged oil supplementing method and tool for on-load switch of oil-immersed transformer |
-
2012
- 2012-10-29 CN CN201210417558.0A patent/CN103531330A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261455A (en) * | 2015-11-06 | 2016-01-20 | 国网黑龙江省电力有限公司检修公司 | Transformer with simple apparatus for filling oil and exhausting air in charged state, and method for filling oil and exhausting air |
| CN112086270A (en) * | 2020-09-01 | 2020-12-15 | 广东电网有限责任公司佛山供电局 | Differential pressure charged oil supplementing method and tool for on-load switch of oil-immersed transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10892616B2 (en) | Safe processing method for active voltage reduction of ground fault phase of non-effective ground system | |
| EP3605773A1 (en) | Safe operation method for voltage reduction and arc suppression of ground fault phase of non-effective grounding system | |
| CN202512200U (en) | Electric locomotive network side high voltage circuit insulation detection system | |
| CN106571620B (en) | A kind of failure judgment method of both-end direct current line of flexible direct current power transmission ground short circuit | |
| CN104575961A (en) | Main transformer on-load switch online intelligent oil supply device and use method thereof | |
| CN103531330A (en) | Method for achieving charged oil supplement of load switch | |
| CN201789272U (en) | Relay protection circuit preventing transformer differential protection malfunction | |
| CN209083348U (en) | A kind of high position automatic oil recharging device | |
| CN102966578A (en) | Pressure control method and device for pump unit of nuclear power station | |
| CN108493903B (en) | Voltage-free energy-pumping reactor differential protection method and device | |
| CN108773300A (en) | A kind of contact net power supply high-pressure system and its application | |
| CN105332744B (en) | Thermal power generation unit prevents the check method of protection system in heat power engineering failure | |
| CN202977092U (en) | Device for supply oil for load switch under charged condition | |
| CN204258132U (en) | The AC metal closed armored type switch cubicle of withdraw-type with pressure relief device | |
| CN205544243U (en) | Transformer neutral point electric capacity separates straight device | |
| CN104393671A (en) | Automatic switch realization method for standby power supply under small load | |
| CN102543558B (en) | Vacuum switch module for looped network cabinet | |
| CN201202584Y (en) | Splashing-proof and signal apparatus of small-sized hydroelectric generating set | |
| CN205211578U (en) | 75MVA transformer of explosion -proof environmental protection | |
| CN203588874U (en) | Apparatus used for preventing line grounding and switch misoperation | |
| CN203798891U (en) | Auxiliary device for measuring capacitance current of power distribution network under electrified condition | |
| CN203826823U (en) | Transformer bushing live-line oil filling device | |
| CN111834110A (en) | Ultrahigh-voltage converter emergency oil discharge and fire-fighting medium injection device, method and system | |
| CN206076925U (en) | Tranformer protection interlocking cuts secondary circuit of the electromotor with outlet | |
| CN105305285A (en) | Removable AC metal closed high-voltage middle-arranged switch equipment and mounting method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140122 |