CN107376486A - A kind of in-situ processing transformer oil dielectric loss oil regeneration processing method bigger than normal - Google Patents
A kind of in-situ processing transformer oil dielectric loss oil regeneration processing method bigger than normal Download PDFInfo
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- CN107376486A CN107376486A CN201710403682.4A CN201710403682A CN107376486A CN 107376486 A CN107376486 A CN 107376486A CN 201710403682 A CN201710403682 A CN 201710403682A CN 107376486 A CN107376486 A CN 107376486A
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- Prior art keywords
- oil
- transformer
- dielectric loss
- transformer oil
- normal
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0016—Working-up used lubricants to recover useful products ; Cleaning with the use of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0058—Working-up used lubricants to recover useful products ; Cleaning by filtration and centrifugation processes; apparatus therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The present invention provides a kind of transformer oil dielectric loss in-situ processing bigger than normal, the processing method that can be continuing with, the transformer oil that can not be effectively handled especially for vacuum oil filtering.Transformer oil is evacuated to oil sac by this method first, is then connected oil sac with oil conditioner and vacuum oil-filter by oil pump, carries out vitro Adsorption regeneration treatment to transformer oil, transformer body, conservator are rinsed after finally being heated using qualified transformer oil.Effective effect of this method is：It is not required to change whole transformer oil, the live standard to meeting onsite application after contaminated transformer oil adsorption treatment, it can reuse, and rinsed and the contaminated oil in Transformer Winding surface and insulating paper can be cleaned up by deep fat, improve Transformer Winding insulation, this method is simple to operate, economizes on resources, less environmental pollution.
Description
Technical field
The present invention relates to a kind of transformer oil treatment process, especially to power system transformer caused by oil quality deterioration
Dielectric loss oil regeneration processing bigger than normal, the field treatment method that can be continuing with.
Background technology
As the key equipment of power network, the safe operation of transformer is very big to the reliability effect of power system.Transformer
Oil because its dielectric strength is high, good cooling results, and can prevent well using oxygen as the insulating paper aging of principal element and then
Extend the transformer insulated life-span, therefore in Large Copacity, high-tension transformer, mainly exhausted is still typically used as using transformer oil
Edge medium.The transformer oil that the nineties in last century uses is mainly paraffine base crude oil, and early production is because condensation point is high, high temperature viscosity is big etc.
Feature, easily cause union freeze, heat-sinking capability difference the problems such as, and these transformer oil are low to oxidation product solubility and easily produce
Raw contamination precipitation separates out, and causes transformer oil dielectric loss beyond standard requirement, it is therefore desirable to which the transformer oil of these deteriorations is carried out
Processing.The method of processing is usually to carry out oil regeneration processing to transformer oil using adsorbent, can avoid changing transformer oil
Caused by economic loss, but also waste oil discharge the problem of causing environmental pollution can be avoided.
The method that transformer oil dielectric loss value is reduced by the method for onsite application adsorption treatment, such as CN103594231B, CN
Shown in 102592786B, both approaches are in the case of using live transformer non-stop-machine, directly to utilize transformer body
Oil regeneration processing is carried out, this method can realize the processing that do not have a power failure, but this method is not accounted for included in transformer body
The influence of the pollutant and pollution precipitate that are adhered in other annexes, other annexes include Transformer Winding and conservator inner surface.
In addition, in the processing procedure of this method, it is also possible to which agitation is deposited in the pollution of oil tank of transformer bottom in cyclic process
Thing, and expand the pollution range of pollutant, but do not account for removing the pollutant of the tank bottoms.
The content of the invention
Present invention offer one kind can either remove tank bottoms pollutant, and can and enough effectively remove transformer body and oil
Rest the head on the in-situ processing transformer oil dielectric loss of surface contaminant oil regeneration processing method bigger than normal.
To achieve the above object, the technical scheme is that：
A kind of in-situ processing transformer oil dielectric loss oil regeneration processing method bigger than normal, comprises the following steps：
A. the transformer oil in transformer body and conservator is all evacuated to oil sac, to transformer body while oil pumping
Inject dry air or nitrogen；After all transformer oil in transformer body are exhausted, in transformer body dry air or
The pressure of nitrogen is maintained at 0.015~0.025MPa；
B. the transformer oil being evacuated in oil sac first passes through heater and is heated to 60 DEG C~70 DEG C, then by being equipped with adsorbent
Decvice for regeneration of oils is adsorbed, be adsorbed onto transformer oil dielectric loss reach standard requirement untill；
C. the transformer oil after Decvice for regeneration of oils is handled is delivered to vacuum oil-filter, at transformer water content in oil filtering
Reason, handle in backlash oil return capsule, repeat step B and above-mentioned vacuum oil-filter filtration treatment step, until detecting in oil sac
Untill transformer oil all refers to reference symbol standardization requirement；
D. close valve between conservator and transformer body, will be handled in step C qualified transformer oil be heated to 50~
The Transformer Winding surface in transformer body is cleaned after 70 DEG C, until the transformer oil of transformer body bottom outflow
Dielectric loss reaches standard requirement；
E. qualified transformer oil will be handled in step D, is heated to 50~70 DEG C, conservator inside is rinsed, until
The transformer oil dielectric loss of conservator oil exit pipe outflow reaches standard requirement；
F. valve between conservator and transformer body is opened, transformer is vacuumized, be then injected into processed conjunction
The transformer oil of lattice, and hot-oil circulation is carried out, the hot-oil circulation time meets to take transformer oil experiment after requiring until transformer oil
Reference symbol standardization requirement is all referred to, is then stood transformer oil, end-of-job after the completion of standing.
Preferably, the oil sac is carried out independently of transformer body, the B, step C by oil sac.
Preferably, the Decvice for regeneration of oils includes oil conditioner, and the adsorbent used is high-alumina microsphere.
Preferably, in the step D, Transformer Winding is rinsed using 60 DEG C of transformer oil.
Preferably, in the step E, conservator is rinsed using 60 DEG C of transformer oil.
Preferably, in the step B, Decvice for regeneration of oils changes an adsorbent per 1-2 hours.
Preferably, in the step D, from cleaning transformer top, side manhole to the transformer in transformer body around
Group surface is carried out.
Preferably, in the step A, the pressure of dry air or nitrogen is maintained at 0.02MPa in transformer body.
Preferably, the oil conditioner includes cabinet, oil inlet and oil-out, and absorption is provided with from outside to inside in the cabinet
Area, filter screen and fuel-displaced area, adsorbent is provided with the adsorption zone, oil inlet is connected with above adsorption zone, is connected above fuel-displaced area
It is connected to oil-out.
When transformer oil dielectric loss is more than 4%, the situation bigger than normal in transformer oil dielectric loss, i.e., carried out using the above method
Transformer oil dielectric loss oil regeneration processing method bigger than normal.Using the beneficial effects of the invention are as follows：
1st, the present invention is after the transformer oil in extracting oil sac is handled, further by transformer oil refunds transformer
In carry out recycling flushing, can effectively remove transformer bottom pollutant and pollution precipitate, it is clear to effectively prevent transformer
Reason is not thorough and causes transformer oil pollutant and pollution precipitate to handle the problem of insufficient.
2nd, the present invention while transformer oil is handled, taken into account Transformer Winding surface, conservator inner surface pollutant with
And the processing of pollution precipitate, for thoroughly transformer oil dielectric loss is bigger than normal provides a kind of new solution for processing comprehensively.
3rd, the present invention carries out oil regeneration processing using adsorbent to transformer oil, can avoid caused by changing transformer oil
Economic loss, but also waste oil can be avoided to discharge the problem of causing environmental pollution.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Accompanying drawing be briefly described.
Fig. 1 is the schematic flow sheet of the present invention.
Fig. 2 is each equipment connection structure schematic diagram used in oil regeneration processing procedure.
Fig. 3 is the structural representation of oil conditioner.
In figure, 1：Oil sac；2：Oil sac delivery valve；3：Heater oil pump, 4：Heater；5：Heater delivery valve；6：Absolute oil
Lubricating oil pump；7：No. 1 oil conditioner；8：No. 2 oil conditioners；9：Oil conditioner delivery valve；10：Vacuum oil filtering lubricating oil pump；11：Vacuum oil-filter
Inlet valve；12：Vacuum oil-filter；13：Oil sac inlet valve；14：Oil inlet；15：Adsorbent；16：Filter screen；17：Oil-out.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but protection scope of the present invention is not limited to following reality
Apply example.
In the present embodiment, handled transformer includes transformer body and conservator, leads between transformer body and conservator
Cross valve to be connected, Transformer Winding and fuel tank are provided with transformer body, transformer oil is largely distributed in transformer sheet
In body, also there is small part to be distributed in conservator.
Referring to Fig. 1, Fig. 2, a kind of in-situ processing transformer oil dielectric loss oil regeneration processing method bigger than normal, including following step
Suddenly：
A. oil sac inlet valve 13 is connected with transformer oil pumping valve, oil sac delivery valve 2 is opened, by transformer body and conservator
In transformer oil be all evacuated to oil sac 1, inject dry air or nitrogen to transformer body while oil pumping；Wait to exhaust change
After all transformer oil in depressor body, the pressure of dry air or nitrogen is maintained at 0.02MPa in transformer body, closes
Oil sac delivery valve 2；
Wherein, oil sac is independently of transformer body, the maintenance for transformer.
B. by the reconfiguration of oil sac inlet valve 13 to vacuum oil-filter 12, the transformer oil being evacuated in oil sac 1 first passes through oil sac and gone out
Fuel tap 3 is pumped into heater 4 and is heated to 65 DEG C, then opens heater delivery valve 5 and delivered to by absolute oil lubricating oil pump 6 equipped with adsorbent
Decvice for regeneration of oils is adsorbed, be adsorbed onto transformer oil dielectric loss reach standard requirement untill；
In the present embodiment, Decvice for regeneration of oils includes No. 1 oil conditioner 7 and No. 2 oil conditioners 8, the adsorbent used are micro- for high alumina
The adsorbent that ball, No. 1 oil conditioner 7 and No. 2 oil conditioners 8 use is high-alumina microsphere, every two hours changes an adsorbent；
Used oil conditioner includes cabinet, oil inlet 14 and oil-out 17, and adsorption zone, filter are provided with from outside to inside in cabinet
Net 16 and fuel-displaced area, adsorbent 15 is provided with adsorption zone, oil inlet 14 is connected with above adsorption zone, is connected with above fuel-displaced area
Oil-out 17.
C. the oil conditioner delivery valve 9 between No. 2 oil conditioners 8 and vacuum oil filtering lubricating oil pump 10, and vacuum oil-filter are opened
Vacuum oil-filter inlet valve 11 between oil pump 10 and vacuum oil-filter 12, the transformer oil after Decvice for regeneration of oils is handled pass through
Vacuum oil filtering lubricating oil pump 10 is delivered to vacuum oil-filter 12, and transformer oil is made into moisture filter processing, and oil sac is opened after processing and is entered
In the refunds oil sac of fuel tap 13, step B and above-mentioned vacuum oil-filter filtration treatment step are repeated, until detecting the transformation in oil sac
Untill device oil all refers to reference symbol standardization requirement, oil conditioner delivery valve 9 and vacuum oil-filter inlet valve 11 are closed.
D. close valve between conservator and transformer body, will be handled in step C qualified transformer oil be heated to 50~
The Transformer Winding surface in transformer body is cleaned after 70 DEG C, until the transformer oil of transformer body bottom outflow
Dielectric loss reaches standard requirement；
Clean Transformer Winding when, be from cleaning transformer top, side manhole to the transformer in transformer body around
Group surface is carried out.
E. qualified transformer oil will be handled in step D, is heated to 60 DEG C, conservator inside is rinsed, until conservator
The transformer oil dielectric loss of oil exit pipe outflow reaches standard requirement.
F. valve between conservator and transformer body is opened, transformer is vacuumized, be then injected into processed conjunction
The transformer oil of lattice, and hot-oil circulation is carried out, the hot-oil circulation time meets to take transformer oil experiment after requiring until transformer oil
Reference symbol standardization requirement is all referred to, is then stood transformer oil, end-of-job after the completion of standing, hot-oil circulation and standing
Time all referring to national standard perform.
It is the 220kV transformer data comparison before and after the processing that oil regeneration processing is carried out using the inventive method below：
| Project | Initial value | After processing |
| Transformer oil dielectric loss value (90 DEG C, %) | 11.6 | 0.78 |
| Transformer oil pressure voltage (kV) | 36 | 52 |
| Transformer Winding insulaion resistance (M Ω) | 1100 | 3400 |
| Transformer Winding dielectric loss (%) | 3.50 | 0.33 |
From result, the transformer oil whole index after the method processing of the present embodiment has met standard will
Ask.
Claims (9)
1. a kind of in-situ processing transformer oil dielectric loss oil regeneration processing method bigger than normal, it is characterised in that comprise the following steps：
A. the transformer oil in transformer body and conservator is all evacuated to oil sac, injected while oil pumping to transformer body
Dry air or nitrogen；After all transformer oil in transformer body are exhausted, dry air or nitrogen in transformer body
Pressure be maintained at 0.015 ~ 0.025MPa；
B. the transformer oil being evacuated in oil sac first passes through heater and is heated to 60 DEG C ~ 70 DEG C, then by the oil equipped with adsorbent again
Generating apparatus is adsorbed, be adsorbed onto transformer oil dielectric loss reach standard requirement untill；
C. the transformer oil after Decvice for regeneration of oils is handled is delivered to vacuum oil-filter, by transformer water content in oil filtration treatment,
Handle in backlash oil return capsule, repeat step B and above-mentioned vacuum oil-filter filtration treatment step, until detecting the transformation in oil sac
Untill device oil all refers to reference symbol standardization requirement；
D. valve between conservator and transformer body is closed, will be handled in step C after qualified transformer oil is heated to 50 ~ 70 DEG C
Transformer Winding surface in transformer body is cleaned, until the transformer oil dielectric loss of transformer body bottom outflow reaches
To standard requirement；
E. qualified transformer oil will be handled in step D, is heated to 50 ~ 70 DEG C, conservator inside is rinsed, until conservator is arranged
The transformer oil dielectric loss of oil pipe outflow reaches standard requirement；
F. valve between conservator and transformer body is opened, transformer is vacuumized, it is processed qualified to be then injected into
Transformer oil, and hot-oil circulation is carried out, the hot-oil circulation time meets to take transformer oil experiment after requiring until transformer oil is whole
Index meets standard requirement, is then stood transformer oil, end-of-job after the completion of standing.
2. in-situ processing transformer oil dielectric loss according to claim 1 oil regeneration processing method bigger than normal, it is characterised in that：
The oil sac is carried out independently of transformer body, the B, step C by oil sac.
3. in-situ processing transformer oil dielectric loss according to claim 1 oil regeneration processing method bigger than normal, it is characterised in that：
The Decvice for regeneration of oils includes oil conditioner, and the adsorbent used is high-alumina microsphere.
4. in-situ processing transformer oil dielectric loss according to claim 1 oil regeneration processing method bigger than normal, it is characterised in that：
In the step D, Transformer Winding is rinsed using 60 DEG C of transformer oil.
5. in-situ processing transformer oil dielectric loss according to claim 1 oil regeneration processing method bigger than normal, it is characterised in that：
In the step E, conservator is rinsed using 60 DEG C of transformer oil.
6. in-situ processing transformer oil dielectric loss according to claim 1 oil regeneration processing method bigger than normal, it is characterised in that：
In the step B, Decvice for regeneration of oils changes an adsorbent per 1-2 hours.
7. in-situ processing transformer oil dielectric loss according to claim 1 oil regeneration processing method bigger than normal, it is characterised in that：
In the step D, the Transformer Winding surface in transformer body is carried out from cleaning transformer top, side manhole.
8. in-situ processing transformer oil dielectric loss according to claim 1 oil regeneration processing method bigger than normal, it is characterised in that：
In the step A, the pressure of dry air or nitrogen is maintained at 0.02MPa in transformer body.
9. in-situ processing transformer oil dielectric loss according to claim 3 oil regeneration processing method bigger than normal, it is characterised in that：
The oil conditioner includes cabinet, oil inlet and oil-out, is provided with adsorption zone, filter screen and fuel-displaced in the cabinet from outside to inside
Area, adsorbent is provided with the adsorption zone, oil inlet is connected with above adsorption zone, oil-out is connected with above fuel-displaced area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403682.4A CN107376486A (en) | 2017-06-01 | 2017-06-01 | A kind of in-situ processing transformer oil dielectric loss oil regeneration processing method bigger than normal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403682.4A CN107376486A (en) | 2017-06-01 | 2017-06-01 | A kind of in-situ processing transformer oil dielectric loss oil regeneration processing method bigger than normal |
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| Publication Number | Publication Date |
|---|---|
| CN107376486A true CN107376486A (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710403682.4A Pending CN107376486A (en) | 2017-06-01 | 2017-06-01 | A kind of in-situ processing transformer oil dielectric loss oil regeneration processing method bigger than normal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111462987A (en) * | 2020-04-28 | 2020-07-28 | 岭东核电有限公司 | Adsorbed gas extraction treatment method for oil-immersed power transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2236680Y (en) * | 1995-11-03 | 1996-10-02 | 朝阳电力设备厂 | Oil storage cabinet of oil bag type full-sealed transformer |
| CN201796685U (en) * | 2010-07-12 | 2011-04-13 | 杜正旺 | Vertical oil storage cabinet for power transformer |
| CN103594231A (en) * | 2012-08-14 | 2014-02-19 | 国家电网公司 | Handing method for reducing dielectric loss of deteriorated transformer oil |
| CN103646755A (en) * | 2013-12-24 | 2014-03-19 | 中山凯旋真空技术工程有限公司 | Treatment system and method for reducing dielectric loss value of transformer oil |
-
2017
- 2017-06-01 CN CN201710403682.4A patent/CN107376486A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2236680Y (en) * | 1995-11-03 | 1996-10-02 | 朝阳电力设备厂 | Oil storage cabinet of oil bag type full-sealed transformer |
| CN201796685U (en) * | 2010-07-12 | 2011-04-13 | 杜正旺 | Vertical oil storage cabinet for power transformer |
| CN103594231A (en) * | 2012-08-14 | 2014-02-19 | 国家电网公司 | Handing method for reducing dielectric loss of deteriorated transformer oil |
| CN103646755A (en) * | 2013-12-24 | 2014-03-19 | 中山凯旋真空技术工程有限公司 | Treatment system and method for reducing dielectric loss value of transformer oil |
Non-Patent Citations (1)
| Title |
|---|
| 黎自用等: "变压器检修后油介损异常原因分析及处理", 《广西电力》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111462987A (en) * | 2020-04-28 | 2020-07-28 | 岭东核电有限公司 | Adsorbed gas extraction treatment method for oil-immersed power transformer |
| CN111462987B (en) * | 2020-04-28 | 2021-08-03 | 岭东核电有限公司 | Adsorbed gas extraction treatment method for oil-immersed power transformer |
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Application publication date: 20171124 |