CN110136929A - A kind of oily self-circulating device and control method of oil-immersed transformer - Google Patents
A kind of oily self-circulating device and control method of oil-immersed transformer Download PDFInfo
- Publication number
- CN110136929A CN110136929A CN201910490577.8A CN201910490577A CN110136929A CN 110136929 A CN110136929 A CN 110136929A CN 201910490577 A CN201910490577 A CN 201910490577A CN 110136929 A CN110136929 A CN 110136929A
- Authority
- CN
- China
- Prior art keywords
- oil
- transformer
- value
- tank
- pressure
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- 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
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/404—Protective devices specially adapted for fluid filled transformers
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
Abstract
A kind of oily self-circulating device and control method of oil-immersed transformer, belong to power supply and distribution of electric power technical field, including breaker unit matched with transformer, oil tank of transformer on transformer body is set, by pressure release oil circuit and return to fuel reserve tank and control circuit that oil circuit is connect with oil tank of transformer, the input terminal of the breaker unit connects to the control circuit, unidirectional variable capacity oil pump I is successively arranged on pressure release oil circuit, adjust the speed valve I, cooler, filter, divide water water trap and the interior pressure check valve in parallel with above-mentioned unidirectional variable capacity oil pump I and speed regulation valve I composition；It is successively arranged unidirectional variable capacity oil pump II, speed regulation valve II on returning to oil circuit and constitutes Electromagnetic Control check valve in parallel with above-mentioned unidirectional variable capacity oil pump II and speed regulation valve II.By to the oily self-cycle structure of transformer and the improvement of control strategy, solving the problems, such as to restore electricity in time after Transformer breaks down, while eliminating insulating oil adverse effect caused by environment after failure.
Description
Technical field
The present invention relates to power supply and distribution of electric power technical fields, and in particular to the oily self-circulating device of oil-immersed transformer and control
Method.
Background technique
Oil-immersed transformer is a kind of static electrical equipment, completes height by changing the size of alternating voltage or electric current
Pressure transmission of electricity, low-voltage distribution process, play the role of transmitting, converting electrical energy.Traditional oil-immersed transformer usually utilizes pressure to discharge
The safety measure of valve draining, pressure release as transformer, when oil tank of transformer internal pressure is not more than predetermined value, oil tank of transformer
In closed state；When transformer breaks down, oil tank of transformer internal pressure is increased to be made greater than predetermined value, pressure relief valve
It opens, after pressure is released into oil tank of transformer, pressure relief valve is closed.After transformer implements above-mentioned pressure release mode,
There are transformer insulation oils to overflow, is difficult to the phenomenon that clearing up, and influence but will be polluted on ambient enviroment；Transformer is implemented above-mentioned
After pressure leak process, although can prevent outside air or moisture from entering inside oil tank of transformer, due to the missing of insulating oil,
After transformer restorability troubleshooting, transformer cannot come into operation in time, cause service restoration problem not in time.
Summary of the invention
The technical problem to be solved in the present invention is to provide the oily self-circulating device and control method of a kind of oil-immersed transformer,
It is improved by the oily self-cycle structure and control strategy to transformer, solves and break down in oil-immersed transformer operation
After the problem of cannot restoring electricity in time, while eliminating insulating oil adverse effect caused by environment after transformer fault.
The technical solution adopted by the present invention is that: a kind of oily self-circulating device of oil-immersed transformer, including transformer and match
Cover breaker unit, the oil tank of transformer being arranged on transformer body, by pressure release oil circuit and return oil circuit and transformer oil
The fuel reserve tank that case connects and the control circuit with monitoring and fault diagnosis program, the input terminal of the breaker unit and control
Circuit connection processed is successively arranged unidirectional variable capacity oil pump I on pressure release oil circuit, speed regulation valve I, cooler, filter, water is divided to drain
Device and the interior pressure check valve in parallel with above-mentioned unidirectional variable capacity oil pump I and speed regulation valve I composition；It is successively set on returning to oil circuit
There are unidirectional variable capacity oil pump II, speed regulation valve II and constitutes electromagnetism control in parallel with above-mentioned unidirectional variable capacity oil pump II and speed regulation valve II
Check valve processed.
The control circuit includes the CPU module with monitoring and fault diagnosis program, is connected to CPU module data/address bus
On acquisition module, signal dispatcher module, nformation alert module and hardware device matched with above-mentioned module.
Further, oil level detection instrument, pressure detecting instrument, oil temperature detection are equipped on the oil tank of transformer and fuel reserve tank
Instrument and environment temperature detector；The output of the oil level detection instrument, pressure detecting instrument, oil temperature detector and environment temperature detector
End is connected to the input terminal of acquisition module.
Further, adjustable continuous vent valve is additionally provided on the fuel reserve tank.
The control method from pressure relief device of above-mentioned transformer, method includes the following steps:
Step 1: starting monitoring and fault diagnosis program, the matched oil level of acquisition module receiving transformer fuel tank after transformer powers on
The real-time detection parameter of detector, pressure detecting instrument, oil temperature detector and environment temperature detector；
Step 2: CPU module real-time detection parameter based on the received, judges the working condition of transformer；
2.1 when oil tank of transformer inside detection parameters, while meeting oil pressure F1≤default oil pressure value F, temperature rise value T1≤default temperature
The condition of appreciation T and oil level L1 > oil level warning value L then determine that transformer is in normal condition, maintain transformer station high-voltage side bus；
2.2 when oil tank of transformer inside detection parameters, under conditions of oil level L1 > oil level warning value L, meet default oil pressure value
When the default oil pressure value F of the F≤oil pressure F1≤105% or default temperature rise value T of default temperature rise value T≤temperature rise value T1≤105%, then sentence
Determine transformer and be in the state that transfinites, interior pressure check valve and Electromagnetic Control check valve are opened, and are carried out low speed to oil tank of transformer and are let out
Oil, oil return, and maintain transformer station high-voltage side bus；
2.3 when oil tank of transformer inside detection parameters, while meeting oil pressure F1 > 105% and presetting oil pressure value F or temperature rise value T1
When > 105% presets temperature rise value T or oil level L1≤oil level warning value L condition, then when determining that transformer is in malfunction, break
Road device unit disconnecting transformer power supply suitable for reading, while starting unidirectional variable capacity oil pump I and speed governing valve I, oil tank of transformer is carried out high
Fast draining is until complete draining；
2.3.1 the detection parameters inside oil tank of transformer, when meeting the condition of the default temperature rise value T of temperature rise value T1≤105%, electromagnetism
It controls check valve to open, low speed oil return is carried out to oil tank of transformer by returning to oil circuit；
1. in low speed oil return, as the liquid level climbing speed value V1 inside oil tank of transformer is not less than pre-set level climbing speed value
V 98.5% when, then determine that oil tank of transformer without leak source, while closing Electromagnetic Control check valve, opens unidirectional variable capacity oil pump
II and speed regulation valve II, by return oil circuit to oil tank of transformer carry out high speed oil return；
A, when detecting the oil level L1 > oil level warning value L inside oil tank of transformer, then breaker unit closed a floodgate, transformation
Device resumes operation；
B, in transformer resumes operation, such as detection parameters inside oil tank of transformer, meet the default oil of oil pressure F1 > 105% again
When pressure value F or temperature rise value T1 > 105% presets temperature rise value T or oil level L1 < oil level warning value L, breaker unit cutting becomes
Depressor power supply suitable for reading, while starting unidirectional variable capacity oil pump I and speed governing valve I, high speed draining is carried out to oil tank of transformer until draining
It completes, control circuit issues alarm signal and notifies maintenance personal；
2. in low speed oil return, as the liquid level climbing speed value V1 inside oil tank of transformer is less than pre-set level climbing speed value V
98.5%, then determine oil tank of transformer there are leakage phenomenon, while closing Electromagnetic Control check valve, to oil tank of transformer reality
Until draining is completed, control circuit issues alarm signal and notifies maintenance personal row high speed draining.
Further, during carrying out high speed draining to oil tank of transformer, when oil pressure value exceeds fuel reserve tank in fuel reserve tank
When power limit, adjustable continuous vent valve is opened, assists pressure release.
Further, the calculation formula of the temperature rise value is T1=TY-TH, wherein T1 represents temperature rise value, TYRepresent transformer
The temperature of oil, THRepresent the environment temperature of equipment operation.
Further, the calculation formula of the liquid level climbing speed value is V1=B/S, and wherein V1 represents liquid level climbing speed
Value, B represent the oil return speed for returning to oil circuit, and S represents the effective lateral cross-sectional area of oil tank of transformer.
Using the present invention generate the utility model has the advantages that being changed by the oily self-cycle structure and control strategy to transformer
Into solving the problems, such as to restore electricity in time after breaking down in oil-immersed transformer operation, while eliminating transformer
Insulating oil is adversely affected caused by environment after failure.
Detailed description of the invention
Fig. 1 is principle schematic diagram of the invention；
Fig. 2 is the logic diagram of control method of the invention；
In attached drawing: 105A is oil tank of transformer, and 105B is fuel reserve tank, and 113 be pressure release oil circuit, and 103a is unidirectional variable capacity oil pump I,
102a is speed regulation valve I, and 111 be cooler, and 110 be filter, and 104 be a point water water trap, and 112 be interior pressure check valve, 312
It is to return to oil circuit, 103b is unidirectional variable capacity oil pump II, and 102b is speed regulation valve II, and 101 be Electromagnetic Control check valve, and 107 be oil
Position detector, 108 be pressure detecting instrument, and 106 be oil temperature detector, and 109 be adjustable continuous vent valve.
Specific embodiment
Referring to attached drawing 1, a kind of oily self-circulating device filling oil-immersed transformer, including transformer and mating breaker list
Member, the oil tank of transformer 105A being arranged on transformer body, by pressure release oil circuit 113 and oil circuit 312 and transformer oil are returned to
The fuel reserve tank 105B of case 105A connection and control circuit with monitoring and fault diagnosis program, the breaker unit 304
Input terminal connect to the control circuit, be successively arranged on pressure release oil circuit 113 unidirectional I 103a of variable capacity oil pump, speed regulation valve I
102a, cooler 111, filter 110, divide water water trap 104 and with above-mentioned unidirectional I 103a of variable capacity oil pump and speed regulation valve I
102a constitutes interior pressure check valve 112 in parallel；Unidirectional II 103b of variable capacity oil pump, speed regulation are successively arranged on returning to oil circuit 312
II 102b of valve and the Electromagnetic Control check valve in parallel with above-mentioned unidirectional II 103b of variable capacity oil pump and speed regulation II 102b of valve composition
101.The control circuit includes the CPU module with monitoring and fault diagnosis program, is connected on CPU module data/address bus
Acquisition module, signal dispatcher module, nformation alert module and hardware device matched with above-mentioned module.
In a particular embodiment, in Fig. 1, oil tank of transformer 105A is connected between fuel reserve tank 105B by pressure release oil circuit 113
It connects, is disposed on pressure release oil circuit 113 by the flow direction of insulating oil: I 103a of unidirectional variable capacity oil pump, speed regulation valve I
What 102a, the cooler 111 of carrying coolant, filter 110, band with indicator were automatically drained out function divides water water trap 104
And with above-mentioned oil pump 103a, the speed regulation valve 102a interior pressure check valve 112 that constitute local oil circuit in parallel.From fuel reserve tank 105B
To between oil tank of transformer 105A, connected by returning to oil circuit 312, on returning to oil circuit 312 by the flow direction of insulating oil according to
It is secondary to be provided with unidirectional II 103b of variable capacity oil pump, speed regulation II 102b of valve and the Electromagnetic Control check valve in parallel with above-mentioned oil circuit
101.Above-mentioned I 103a of unidirectional variable capacity oil pump and II 103b of unidirectional variable capacity oil pump is adjustable per se with position detection and feedback function
Electromagnetic operator；Above-mentioned interior pressure check valve 112 and Electromagnetic Control check valve 101 have position detection feedback function.
In actual operation, in order to reduce insulating oil in pressure release oil circuit 113 and return in oil circuit 312 in operational process to change
The influence that depressor fuel tank 105A oil level generates, the oil-filled 110%-115% to oil level warning value of oil tank of transformer 105A, and storing up
Pre-oiling is carried out in right amount in fuel tank 105B and pressure release oil circuit 113 and return oil circuit 312.
Oil level detection instrument 107, pressure detecting instrument 108, oil temperature inspection are equipped on oil tank of transformer 105 A and fuel reserve tank 105B
Survey instrument 106 and environment temperature detector；The oil level detection instrument 107, pressure detecting instrument 108, oil temperature detector 106 and environment temperature
The output end of degree detector is connected to the input terminal of acquisition module.Adjustable continuous deflation is additionally provided on the fuel reserve tank 105B
Valve 109.
With reference to Fig. 2, the control method from pressure relief device of above-mentioned transformer, method includes the following steps:
Step 1: starting monitoring and fault diagnosis program after transformer powers on, acquisition module receiving transformer fuel tank 105A is matched
The real-time detection parameter of oil level detection instrument 107, pressure detecting instrument 108, oil temperature detector 106 and environment temperature detector；
Step 2: CPU module real-time detection parameter based on the received, judges the working condition of transformer；
2.1 inside the oil tank of transformer 105A detection parameters, while meeting oil pressure F1≤default oil pressure value F, temperature rise value T1≤pre-
If the condition of temperature rise value T and oil level L1 > oil level warning value L, then determines that transformer is in normal condition, maintain transformer station high-voltage side bus；
2.2 when the inside oil tank of transformer 105A detection parameters, under conditions of oil level L1 > oil level warning value L, meet default oil
When pressure value F≤default oil pressure value F of the oil pressure F1≤105% or default temperature rise value T of default temperature rise value T≤temperature rise value T1≤105%,
Then determine that transformer is in the state that transfinites, interior pressure check valve 112 and Electromagnetic Control check valve 101 are opened, to oil tank of transformer
105A carries out low speed draining, oil return, and maintains transformer station high-voltage side bus；
During above-mentioned low speed draining, the cooler 111 with coolant in pressure release oil circuit 113 plays effectively oil temperature
Reduction effect.
2.3 inside the oil tank of transformer 105A detection parameters, while meet oil pressure F1 > 105% preset oil pressure value F or
When temperature rise value T1 > 105% presets temperature rise value T or oil level L1≤oil level warning value L condition, then determine that transformer is in failure
When state, breaker unit disconnecting transformer power supply suitable for reading, while starting I 102a of unidirectional I 103a of variable capacity oil pump and speed governing valve, it is right
Oil tank of transformer 105A carries out high speed draining until completing draining；
2.3.1 the detection parameters inside oil tank of transformer 105A, when meeting the condition of the default temperature rise value T of temperature rise value T1≤105%,
Electromagnetic Control check valve 101 is opened, and carries out low speed oil return to oil tank of transformer 105A by returning to oil circuit 312；
1. in low speed oil return, if the liquid level climbing speed value V1 inside oil tank of transformer 105A is not less than raising speed on pre-set level
Rate value V 98.5% when, then determine oil tank of transformer 105A without leak source, while closing Electromagnetic Control check valve 101, open single
To II 103b of variable capacity oil pump and speed regulation II 102b of valve, high speed oil return is carried out to oil tank of transformer 105A by returning to oil circuit 312；
Further corrective measure is: during high speed oil return, determining whether liquid level climbing speed value V1 is not less than high speed and returns
Theoretical pre-set level climbing speed value when oily；Such as less than, then determine that oil tank of transformer 105A has leak source, stop high speed immediately and return
Oil, and execute the high speed draining process of oil tank of transformer 105A；
A, when detecting that the oil level L1 inside oil tank of transformer 105A is greater than oil level warning value L, then breaker unit is closed
Lock, transformer resume operation；
B, in transformer resumes operation, such as detection parameters inside oil tank of transformer 105A, it is pre- to meet oil pressure F1 > 105% again
If oil pressure value F or temperature rise value T1 > 105% preset temperature rise value T or oil level L1 < oil level warning value L, breaker unit is cut
Disconnected transformer power supply suitable for reading, while starting unidirectional I 103a of variable capacity oil pump and I 102a of speed governing valve, oil tank of transformer 105A is carried out
Until draining is completed, control circuit issues alarm signal and notifies maintenance personal high speed draining；
2. in low speed oil return, as the liquid level climbing speed value V1 inside oil tank of transformer 105A is less than pre-set level climbing speed
The 98.5% of value V, then determining oil tank of transformer 105A, there are leakage phenomenons, while closing Electromagnetic Control check valve 101, to change
Depressor fuel tank 105A carries out high speed draining until draining is completed, and control circuit issues alarm signal and notifies maintenance personal.
Default oil pressure value F among the above, default temperature rise value T, oil level warning value L and pre-set level climbing speed value V, can root
It is determined according to actual product and actual needs；Temperature rise value T is wherein preset according to the regulation of relevant national standard, is traditionally arranged to be
60K。
The calculation formula of the temperature rise value is T1=TY-TH, wherein T1 represents temperature rise value, TYThe temperature of transformer oil is represented,
THRepresent the environment temperature of equipment operation.
In above-mentioned Transformer, the insulating oil that all draining processes are released have passed through cooler 111, filtering
Device 110 and dividing after water water trap 104 just arrives in fuel reserve tank 105B, so the insulation oil quality in fuel reserve tank 105B is preferable, pole
It ensure that the recoverable of insulating oil in big degree.
During carrying out high speed draining to oil tank of transformer 105A, when oil pressure value exceeds fuel reserve tank in fuel reserve tank 105B
When 105B power limit, adjustable continuous means of deflation 109 is opened, assists pressure release；It is great that this process can guarantee that transformer occurs
The collection to insulating oil is completed when failure, and guarantees greatly to reduce the unfavorable shadow to environment while other component is injury-free
It rings.The calculation formula of the liquid level climbing speed value is V1=B/S, and wherein V1 represents liquid level climbing speed value, and B, which is represented, returns to oil
The oil return speed on road, S represent the effective lateral cross-sectional area of oil tank of transformer.In embodiment, pre-set level climbing speed value V, root
Change according to oil return speed in real-time return oil circuit.
In conjunction with above-mentioned oil channel structures and embodiment, controlling party of the invention is described in detail:
When breaking down in the operation of the transformer, the various instrument and meters that oil tank of transformer ontology 105A is furnished with are to its item
Data and practical operation situation real-time monitoring, and control circuit is fed back to, control circuit determines that transformer is by decision condition
It is no to be able to maintain that normal operating status；It is completed again by the control to related device in pressure release oil circuit 113 and return oil circuit 312
The self diagnosis of power transformer interior fault and self-healing operational process.
One, there is abnormal work step in oil tank of transformer 105A internal oil pressure:
Control circuit carries out real-time monitoring sum number to the oil pressure F1 inside oil tank of transformer 105A in transformer normal operation
According to transmission, once oil pressure F1 exceeds default oil pressure value F, control circuit makes rapidly comparing, to judge because of failure generation
Whether oil pressure F1 is more than the 105% of default oil pressure value F, if without departing from the interior pressure check valve 112 of pressure release oil circuit 113 is beaten
It opens, the oil extraction into fuel reserve tank 105B, realizes the pressure release of low speed draining；Meanwhile real-time monitoring oil level situation of change, if oil level L1 is protected
It holds on oil level warning value L and oil pressure F1 is less than always the 105% of default oil pressure value F, then oil circuit is returned to by control
Electromagnetic Control check valve 101 in 312 returns oil from fuel reserve tank 105B to oil tank of transformer 105A in right amount, real-time monitoring during this
Pressure data and oil level data simultaneously send internal pressure abnormal maintenance information to backstage by control circuit, and system maintains operation, completes
Self diagnosis and self- recoverage process to power transformer interior fault.
If in above-mentioned operational process, once detect that oil pressure F1 is more than that the 105% or oil level L1 of default oil pressure value F reaches
To oil level warning value L, then control circuit starting protection program immediately, passes through control breaker unit disconnecting transformer source side
Power supply, while I 103a of unidirectional variable capacity oil pump and I 102a of the speed governing valve operation of pressure release oil circuit 113, transformer quickly complete high speed and let out
Oily pressure leak process.After the completion of draining, control circuit judges that the temperature rise value T1 inside oil tank of transformer 105A is by comparing
No 105% lower than default temperature rise value T passes through alarm device and communication module if being higher than the 105% of default temperature rise value T
It carries out scene and backstage alerts, personnel is needed to carry out on-site maintenance, device reset and restore electricity；If it is determined that oil tank of transformer
Temperature rise value T1 in 105A is lower than the 105% of default temperature rise value T, then by Electromagnetic Control check valve 101 from fuel reserve tank 105B extremely
Oil tank of transformer 105A carries out low speed oil return, and real-time monitoring oil level situation, to judge that tank body of oil tank whether there is leakage, if
There is no leakages, then return to II 103b of unidirectional variable capacity oil pump in oil circuit 312 and speed regulation II 102b of valve operation, carry out high speed and return
Fuel injection system is returned, still real-time monitoring oil level situation during this judges whether tank body of oil tank has leakage situation, if this
Oil level has reached the oil level warning value L that transformer can operate normally in the process, then control circuit is by controlling breaker suitable for reading
The combined floodgate of unit realizes resuming operation for transformer.
In transformer during resuming operation, the oil pressure F1 inside oil tank of transformer 105A is again above default oil pressure value
The 105% of F, then control circuit starting protection program immediately, controls breaker unit disconnecting transformer power supply suitable for reading, and pass through announcement
Alarm device and communication module carry out scene and backstage alerts, and personnel is needed to carry out on-site maintenance, device reset and restore electricity.
Two, there is the work step of temperature anomaly inside oil tank of transformer 105A:
Control circuit carries out real-time monitoring and data to the oil temperature inside oil tank of transformer 105A in transformer normal operation
Transmission, and the temperature rise value T1 of combining environmental temperature computation oil, once temperature rise value T1 exceeds default temperature rise value T, control circuit is rapid
Comparing is made, to judge whether the temperature rise value T1 generated by failure is more than the 105% of default temperature rise value T, if without departing from,
Then the interior pressure check valve 112 of pressure release oil circuit 113 is opened, the oil extraction into fuel reserve tank 105B, realizes the pressure release of low speed draining；Meanwhile
Real-time monitoring oil level situation of change, if oil level L1 be maintained on oil level warning value L and temperature rise value T1 be less than always it is pre-
If the 105% of temperature rise value T, then the Electromagnetic Control check valve 101 in oil circuit 312 is returned to from fuel reserve tank 105B to transformation by control
Device fuel tank 105A returns oil in right amount, monitoring pressure in real time data and oil level data and is sent by control circuit to backstage during this
Temperature anomaly safeguards that information, system maintain operation, completes self diagnosis and self- recoverage process to power transformer interior fault.
If in above-mentioned logical process, once detect that temperature rise value T1 is more than the 105% or oil level L1 of default temperature rise value T
Reach oil level warning value L, then control circuit starting protection program immediately, passes through control breaker unit disconnecting transformer source side
Power supply, while pressure release oil circuit 113 I 103a of unidirectional variable capacity oil pump and I 102a of speed governing valve operation, transformer quickly complete high speed
Draining pressure leak process.After the completion of draining, control circuit judges that the temperature rise value T1 in oil tank of transformer 105A is by comparing
No 105% lower than default temperature rise value T passes through alarm device and communication module if being higher than the 105% of default temperature rise value T
It carries out scene and backstage alerts, personnel is needed to carry out on-site maintenance, device reset and restore electricity；If it is determined that oil tank of transformer
Temperature rise value T1 in 105A is lower than the 105% of default temperature rise value T, then by Electromagnetic Control check valve 101 from fuel reserve tank 105B extremely
Oil tank of transformer 105A carries out low speed oil return, and real-time monitoring oil level situation, to judge that tank body of oil tank whether there is leakage, if
There is no leakages, then return to II 103b of unidirectional variable capacity oil pump in oil circuit 312 and speed regulation II 102b of valve operation, carry out high speed and return
Fuel injection system is returned, still real-time monitoring oil level situation during this judges whether tank body of oil tank has leakage situation, if this
Oil level has reached the oil level warning value L that transformer can operate normally in the process, then control circuit is by controlling breaker suitable for reading
The combined floodgate of unit realizes resuming operation for transformer.
In transformer during resuming operation, oil temperature appreciation T1 is again above default temperature rise value in oil tank of transformer 105A
The 105% of T, then control circuit starting protection program immediately, controls breaker unit disconnecting transformer power supply suitable for reading, and pass through announcement
Alarm device and communication module carry out scene and backstage alerts, and personnel is needed to carry out on-site maintenance, device reset and restore electricity.
Claims (8)
1. a kind of oily self-circulating device of oil-immersed transformer, including breaker unit matched with transformer, setting are in transformation
Oil tank of transformer (105A) on device ontology by pressure release oil circuit (113) and returns oil circuit (312) and oil tank of transformer (105A)
The fuel reserve tank (105B) and control circuit of connection, the input terminal of the breaker unit connect to the control circuit, and feature exists
In: be successively arranged on pressure release oil circuit (113) unidirectional variable capacity oil pump I (103a), speed regulation valve I (102a), cooler (111),
Filter (110) divides water water trap (104) and constitutes with above-mentioned unidirectional variable capacity oil pump I (103a) and speed regulation valve I (102a)
Interior pressure check valve (112) in parallel；Unidirectional variable capacity oil pump II (103b), speed governing valve are successively arranged on returning to oil circuit (312)
II (102b) of door and the Electromagnetic Control list in parallel with above-mentioned unidirectional variable capacity oil pump II (103b) and speed regulation valve II (102b) composition
To valve (101).
2. the oily self-circulating device of oil-immersed transformer according to claim 1, it is characterised in that: the control circuit packet
Include the CPU module with monitoring and fault diagnosis program, acquisition module, the information transmit-receive being connected on CPU module data/address bus
Module, nformation alert module and hardware device matched with above-mentioned module.
3. the oily self-circulating device of oil-immersed transformer according to claim 2, it is characterised in that: the oil tank of transformer
Be equipped on (105A) and fuel reserve tank (105B) oil level detection instrument (107), pressure detecting instrument (108), oil temperature detector (106) and
Environment temperature detector；The oil level detection instrument (107), pressure detecting instrument (108), oil temperature detector (106) and environment temperature
The output end of detector is connected to the input terminal of acquisition module.
4. the oily self-circulating device of oil-immersed transformer according to claim 1, it is characterised in that: the fuel reserve tank
Adjustable continuous vent valve (109) is additionally provided on (105B).
5. the control method of the oily self-circulating device based on oil-immersed transformer described in claim 1-4, it is characterised in that the party
Method the following steps are included:
Step 1: starting monitoring and fault diagnosis program, acquisition module receiving transformer fuel tank (105A) institute after transformer powers on
Real-time detection ginseng with oil level detection instrument (107), pressure detecting instrument (108), oil temperature detector (106) and environment temperature detector
Number；
Step 2: CPU module real-time detection parameter based on the received, judges the instantaneous operating conditions of transformer；
2.1 when oil tank of transformer (105A) internal detection parameters, at the same meet oil pressure F1≤default oil pressure value F, temperature rise value T1≤
The condition of default temperature rise value T and oil level L1 > oil level warning value L then determine that transformer is in normal condition, maintain transformer fortune
Row；
2.2 when oil tank of transformer (105A) internal detection parameters, under conditions of oil level L1 > oil level warning value L, meet default
The default oil pressure value F of the oil pressure value F≤oil pressure F1≤105% or default temperature rise value T of default temperature rise value T≤temperature rise value T1≤105%
When, then determine that transformer is in the state that transfinites, interior pressure check valve (112) and Electromagnetic Control check valve (101) are opened, to transformation
Device fuel tank (105A) carries out low speed draining, oil return, and maintains transformer station high-voltage side bus；
2.3 when oil tank of transformer (105A) internal detection parameters, while meeting oil pressure F1 > 105% and presetting oil pressure value F or temperature rise
When value T1 > 105% presets temperature rise value T or oil level L1≤oil level warning value L condition, then determine that transformer is in malfunction
When, breaker unit disconnecting transformer power supply suitable for reading, while starting unidirectional variable capacity oil pump I (103a) and speed governing valve I (102a), it is right
Oil tank of transformer (105A) carries out high speed draining until completing draining；
2.3.1 in the internal detection parameters of oil tank of transformer (105A), meet the condition of the default temperature rise value T of temperature rise value T1≤105%
When, Electromagnetic Control check valve (101) is opened, and carries out low speed oil return to oil tank of transformer (105A) by returning to oil circuit (312)；
1. during low speed oil return, as the internal liquid level climbing speed value V1 of oil tank of transformer (105A) is not less than pre-set level
Climbing speed value V 98.5% when, then determine that oil tank of transformer (105A) without leak source, closes Electromagnetic Control check valve (101)
Meanwhile unidirectional variable capacity oil pump II (103b) and speed regulation valve II (102b) are opened, by returning to oil circuit (312) to oil tank of transformer
(105A) carries out high speed oil return；
A, when detecting the oil level L1 > oil level warning value L of oil tank of transformer (105A) inside, then breaker unit is closed
Lock, transformer resume operation；
B, in transformer resumes operation, such as the internal detection parameters of oil tank of transformer (105A), meet oil pressure F1 > 105% again
When default oil pressure value F or temperature rise value T1 > 105% presets temperature rise value T or oil level L1 < oil level warning value L, breaker unit
Disconnecting transformer power supply suitable for reading, while starting unidirectional variable capacity oil pump I (103a) and speed governing valve I (102a), to oil tank of transformer
(105A) carries out high speed draining until draining is completed, and control circuit issues alarm signal and notifies maintenance personal；
2. during low speed oil return, as the internal liquid level climbing speed value V1 of oil tank of transformer (105A) is less than on pre-set level
The 98.5% of rate value V is risen, then determining oil tank of transformer (105A), there are leakage phenomenons, close Electromagnetic Control check valve (101)
While, high speed draining is carried out to oil tank of transformer (105A) until draining is completed, control circuit issues alarm signal and notifies
Maintenance personal.
6. the control method of the oily self-circulating device of oil-immersed transformer according to claim 5, it is characterised in that: right
During oil tank of transformer (105A) carries out high speed draining, when fuel reserve tank (105B) interior oil pressure value is born beyond fuel reserve tank (105B)
When the limit, adjustable continuous vent valve (109) is opened, assists pressure release.
7. the control method of the oily self-circulating device of oil-immersed transformer according to claim 5, it is characterised in that: described
The calculation formula of temperature rise value is T1=TY-TH, wherein T1 represents temperature rise value, TYRepresent the oil temperature of transformer, THRepresent equipment operation
Environment temperature.
8. the control method of the oily self-circulating device of oil-immersed transformer according to claim 5, it is characterised in that: described
The calculation formula of liquid level climbing speed value is V1=B/S, and wherein V1 represents liquid level climbing speed value, and B represents the oil return for returning to oil circuit
Speed, S represent the effective lateral cross-sectional area of oil tank of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910490577.8A CN110136929B (en) | 2019-06-06 | 2019-06-06 | Oil self-circulation device of oil-immersed transformer and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910490577.8A CN110136929B (en) | 2019-06-06 | 2019-06-06 | Oil self-circulation device of oil-immersed transformer and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110136929A true CN110136929A (en) | 2019-08-16 |
| CN110136929B CN110136929B (en) | 2020-05-26 |
Family
ID=67580563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910490577.8A Active CN110136929B (en) | 2019-06-06 | 2019-06-06 | Oil self-circulation device of oil-immersed transformer and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110136929B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790399A (en) * | 2021-09-15 | 2021-12-14 | 广东电网有限责任公司 | Automatic oil pressure regulating device for transformer |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1681054A (en) * | 2004-04-07 | 2005-10-12 | 日立工业设备系统株式会社 | Transformer monitoring system |
| CN101976893A (en) * | 2010-11-23 | 2011-02-16 | 广州德昊电子科技有限公司 | Intelligent transformer |
| CN104252948A (en) * | 2013-06-26 | 2014-12-31 | 成都昊地科技有限责任公司 | Transformer oil storage cabinet having filtering function |
| CN204229989U (en) * | 2014-12-09 | 2015-03-25 | 张玮琦 | The insulating oil cooling back installation of locomotive transformer |
| CN204276793U (en) * | 2014-12-04 | 2015-04-22 | 荆州市江汉众力实业有限公司 | A kind of novel hydraulic riveting system |
| CN204436902U (en) * | 2015-01-13 | 2015-07-01 | 潘胜文 | Gas changes the steady row system of liquid |
| CN205109109U (en) * | 2015-11-05 | 2016-03-30 | 国家电网公司 | Insulating oily degasser of mutual -inductor |
| CN205783432U (en) * | 2016-05-26 | 2016-12-07 | 江西清华泰豪三波电机有限公司 | A kind of I grade of hazardous area explosion-proof air-conditioner dehumidifying integrated machine |
| CN206338264U (en) * | 2016-12-21 | 2017-07-18 | 宜宾市雪富玻璃制品有限责任公司 | Rail kibbling mill multistage speed hydraulic control system |
| CN108799224A (en) * | 2018-08-20 | 2018-11-13 | 西北农林科技大学 | A kind of hilly and mountainous land tractor hydraulic levelling control system |
| CN208397667U (en) * | 2018-06-07 | 2019-01-18 | 浙江易普润滑设备制造有限公司 | A kind of lubricating oil station applied to bulb-type hydraulic generating set jacked up with high pressure |
-
2019
- 2019-06-06 CN CN201910490577.8A patent/CN110136929B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1681054A (en) * | 2004-04-07 | 2005-10-12 | 日立工业设备系统株式会社 | Transformer monitoring system |
| CN101976893A (en) * | 2010-11-23 | 2011-02-16 | 广州德昊电子科技有限公司 | Intelligent transformer |
| CN104252948A (en) * | 2013-06-26 | 2014-12-31 | 成都昊地科技有限责任公司 | Transformer oil storage cabinet having filtering function |
| CN204276793U (en) * | 2014-12-04 | 2015-04-22 | 荆州市江汉众力实业有限公司 | A kind of novel hydraulic riveting system |
| CN204229989U (en) * | 2014-12-09 | 2015-03-25 | 张玮琦 | The insulating oil cooling back installation of locomotive transformer |
| CN204436902U (en) * | 2015-01-13 | 2015-07-01 | 潘胜文 | Gas changes the steady row system of liquid |
| CN205109109U (en) * | 2015-11-05 | 2016-03-30 | 国家电网公司 | Insulating oily degasser of mutual -inductor |
| CN205783432U (en) * | 2016-05-26 | 2016-12-07 | 江西清华泰豪三波电机有限公司 | A kind of I grade of hazardous area explosion-proof air-conditioner dehumidifying integrated machine |
| CN206338264U (en) * | 2016-12-21 | 2017-07-18 | 宜宾市雪富玻璃制品有限责任公司 | Rail kibbling mill multistage speed hydraulic control system |
| CN208397667U (en) * | 2018-06-07 | 2019-01-18 | 浙江易普润滑设备制造有限公司 | A kind of lubricating oil station applied to bulb-type hydraulic generating set jacked up with high pressure |
| CN108799224A (en) * | 2018-08-20 | 2018-11-13 | 西北农林科技大学 | A kind of hilly and mountainous land tractor hydraulic levelling control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790399A (en) * | 2021-09-15 | 2021-12-14 | 广东电网有限责任公司 | Automatic oil pressure regulating device for transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110136929B (en) | 2020-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104251959B (en) | A kind of system for detecting and positioning one-phase earthing failure in electric distribution network | |
| US11422204B2 (en) | Method for detecting open phase of startup/standby transformer based on optical CT | |
| CN108847660B (en) | Prevention control optimization decision method based on online checking of offline strategy of security control system | |
| CN106169740A (en) | 110kV single-trunk segmental wiring incoming relay-protection locking prepared auto restart relay protecting method | |
| CN107276052B (en) | A kind of DC protection system and its control method | |
| CN105406601A (en) | Intelligent power distribution cabinet monitoring system and monitoring method | |
| CN208571394U (en) | A kind of photovoltaic power generation box-type substation based on intelligent controller | |
| CN203368127U (en) | Spare power automatic switching control equipment for transformer substation network | |
| CN104297676B (en) | Method, device and system for monitoring circuit breaker of wind generating set | |
| CN110136929A (en) | A kind of oily self-circulating device and control method of oil-immersed transformer | |
| CN106529824B (en) | One kind being used for secondary equipment of intelligent converting station and electrical secondary system function damage degree analysis method | |
| CN105529681A (en) | Leakage protection circuit for low-voltage ungrounded system and realization method | |
| CN116865205B (en) | Wireless breaker fault early warning method and system | |
| CN105515014A (en) | Wind farm integrated reactive power control system based on protection action information and control method thereof | |
| CN105655972A (en) | Self-adaptive leakage protection method for residual current operated protective device | |
| CN109655715A (en) | A kind of electric network fault recognition methods based on intelligent grid fault recognition equipment | |
| CN103630810A (en) | Diagnosis method for insulation state of parallel compensation capacitor | |
| CN103051057A (en) | Transformer equipment state overhaul intelligent management monitoring system | |
| CN109167342A (en) | Lightning protection monitoring device | |
| CN105656086B (en) | Overload processing method | |
| CN204883333U (en) | Monitored control system is synthesized to multi -functional water conservancy pump station | |
| CN107769156A (en) | A kind of method of achievable equipment safety adaptive guard action | |
| CN202940644U (en) | Intelligent management and monitoring system for substation equipment state maintenance | |
| CN105870879A (en) | Method for intelligent measurement and control over low-voltage electric leakage switch | |
| CN114594408A (en) | Non-electric quantity protection instant monitoring system for transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220708 Address after: 050222 South Jiangbi section of Hongqi Street, Shijiazhuang City, Hebei Province Patentee after: SHIJIAZHUANG KELIN ELECTRIC EQUIPMENT Co.,Ltd. Patentee after: Shijiazhuang Taida Electrical Equipment Co., Ltd Address before: 050222 South Jiangbi section of Hongqi Street, Shijiazhuang City, Hebei Province Patentee before: SHIJIAZHUANG KELIN ELECTRIC EQUIPMENT Co.,Ltd. |