CN106786111A - A kind of general GIS air chamber micro- water treatment heating device of power optimized - Google Patents
A kind of general GIS air chamber micro- water treatment heating device of power optimized Download PDFInfo
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- CN106786111A CN106786111A CN201611123838.5A CN201611123838A CN106786111A CN 106786111 A CN106786111 A CN 106786111A CN 201611123838 A CN201611123838 A CN 201611123838A CN 106786111 A CN106786111 A CN 106786111A
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- heating
- zone
- power
- gis
- air chamber
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Resistance Heating (AREA)
- Direct Air Heating By Heater Or Combustion Gas (AREA)
Abstract
The present invention relates to a kind of micro- water treatment heating device of general GIS air chamber of power optimized, the device includes zone of heating, heat-insulation layer and fixed bed, described zone of heating laminating GIS device housing is set, zone of heating is drawn power supply wiring and connects power supply, described heat-insulation layer is wrapped in zone of heating outer surface, be fixed on GIS device housing for zone of heating and heat-insulation layer by described fixed bed, the maximum heating power when heating power of zone of heating is configured to the normal operating temperature of the GIS device internal part when being heated using the heater no more than setting value.Compared with prior art, the present invention has the advantages that highly versatile, heating power are optimal, heating effect is good, power consumption is low, modularization is integrated, simple to operate, detachable.
Description
Technical field
The present invention relates to a kind of micro- water treatment facilities of GIS air chambers, more particularly, to a kind of general GIS air chamber of power optimized
Micro- water treatment heating device.
Background technology
The ultrahigh-pressure gas insulated micro- water source of switchgear (GIS) air chamber is more, with the growth of run time, easily goes out
The phenomenon of existing air chamber excessive water content, especially air chamber such as current transformer, breaker air chamber etc. of internal unit load；Micro- water surpasses
Mark reduces the dielectric strength of plenum interior, SF6Electrolysate corrosivity is stronger under the influence of Wei Shui, to device damage compared with
Greatly.The micro- water process of GIS air chambers is normally run significant to maintained equipment safety, guarantee equipment.
The heater of existing GIS switchgears as switchgear important component, switch can normally run
Important guarantee.Its effect has following 3 aspects：1) SF is prevented6SF in breaker6Gas is liquefied due to low temperature, is caused
During separating brake is switched, the arc blow-out pressure of arc-chutes not enough, causes the switch can not normal arc extinguishing；2) winter switching manipulation is prevented
Be driven in mechanism, point, the lubricating oil solidification of the part filling such as feed motion and energy storage motor gear, cause frictional force to increase, shadow
Ring the correct operation of switch；3) prevent switchgear inside from condensation occurring and cause electric discharge, flashover fault, and secondary terminals corrosion
The generation of phenomenon.But existing heater there is no the relevant design for the micro- water process of GIS air chambers, and heating effect is poor, energy
Consumption is higher, and with GIS device poor compatibility, security performance cannot be ensured.
GIS device air chamber excessive water content heat be it is existing with cyclic nitrogen wash based on maintenance craft basis
On, local heating is carried out to GIS device housing by heating module, so as to improve GIS plenum interior temperature, equipment for gasification inwall
Condensation, separates out the moisture of equipment surface material absorption, improves high pure nitrogen and rinses the moisture that drying process is taken away, and reduces cyclic nitrogen
The number of operations washed, lifts the efficiency of site examining and repairing technique.The parameter specification of different GIS devices is different, so that design is not
The heater of same specification.Heating process is from SF6Gas recovery operation starts, and is washed dried process terminates to cyclic nitrogen.GIS
Equipment normal working temperature is restricted, and temperature can not be too high.Design a highly versatile, advantages of simple, efficient energy-saving, heating work(
The micro- water process housing external heating device of the optimal GIS air chambers of rate can obviously reduce the repair time, shorten equipment power off time, protect
Hinder the safety and stability of power system.
The content of the invention
The purpose of the present invention is exactly that a kind of leading to for power optimized is provided for the defect for overcoming above-mentioned prior art to exist
With the micro- water treatment heating device of GIS air chambers.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of micro- water treatment heating device of general GIS air chamber of power optimized, the device includes zone of heating, heat-insulation layer and consolidates
Given layer, described zone of heating laminating GIS device housing is set, and zone of heating is drawn power supply wiring and connects power supply, described
Heat-insulation layer is wrapped in zone of heating outer surface, and be fixed on GIS device housing for zone of heating and heat-insulation layer by described fixed bed, heating
The normal operating temperature that the heating power of layer is configured to the GIS device internal part when being heated using the heater does not surpass
Cross maximum heating power during setting value.
Described zone of heating includes polylith heating plate and thermal-insulation baffle plate, the number of described heating plate according to zone of heating plus
Thermal power is configured, and described heating plate is evenly distributed on GIS device casing surroundings, embedded between adjacent two pieces of heating plates to protect
Temperature dummy plate is isolated, and every piece of heating plate is drawn power supply wiring and connects power supply.
Described heating plate and thermal-insulation baffle plate is arcuation flexible material.
Described fixed bed is the adjustable hoop body structure of cylinder radius, and fixed bed lateral opening end is linked closely portion by screw
Part is fixed.
The device also includes control unit and execution unit, and described control unit connects described adding by execution unit
Thermosphere, described execution unit includes the relay for controlling the device whether to work, failure removal is carried out to heater melts
Disconnected device and to heater heat the timer of timing, and then described control unit includes that power switch, relay are opened
Guard's valve and heat time load button.
The power supply of the power supply wiring connection that zone of heating is drawn is the power supply in GIS operation cabinets.
Compared with prior art, the invention has the advantages that：
(1) heater of the present invention is used as the micro- water process of GIS air chambers, is set installed in GIS device housing outer surface and to GIS
Standby air chamber is heated, and can effectively improve GIS device air chamber gas and internal device temperature, is conducive to GIS device internal condensation
Gasification and adsorption moisture precipitation so that improves that nitrogen washes dries water, reduce cyclic nitrogen and wash dry number of times,
Lift the efficiency of site examining and repairing technique；
(2) heater of the present invention is divided into three layers of detachable form, and simple structure is easy for installation, and innermost layer is zone of heating,
Be brought into close contact with GIS surface of shell, it is ensured that plus heat availability, zone of heating is wrapped up by heat-insulation layer, heat-insulation layer reduce plus
The heat losses of thermosphere, improve the efficiency of heating surface, reduce energy resource consumption, and zone of heating and heat-insulation layer are fixed on GIS by fixed bed
On housing, linked closely by screw and be fixed, it is ensured that appropriate fastening dynamics, and inner-layer device is protected, prevent rainwater
With the entrance of debris；
(3) the micro- water Precipitation Characteristics of GIS device air chamber know that temperature is higher, and micro- water precipitation rate is bigger, and amount of precipitation is more, but
Be the normal operating temperature of GIS device internal part no more than setting value, therefore the present invention enters to the heating power of zone of heating
Go and distributed rationally, can not interfere with the normal operation of GIS device in the case where optimal heating is realized, and heating power
Configuration can voluntarily be configured by the number of heating plate, highly versatile, it is adaptable to GIS breakers, current transformer, isolation
The air chamber equipment such as switch；
(4) zone of heating heating plate number of the present invention can be configured voluntarily, while passing through thermal insulation separation between adjacent heating plate
Plate is isolated, and further enhances heat-insulating property；
(5) fixed bed of the present invention be the adjustable hoop body structure of cylinder radius, such that it is able to be directed to distinct device air chamber and
Different model equipment, can carry out installation heating, simple to operate, easy to disassemble and maintenance, convenient transport, and the used time is not detachable
Place；
(6) present invention sets control unit and execution unit is controlled and protects to heater, realizes heater
Reliable control, while can be automatically cut off in failure, have a safety feature；
(7) heater power supply of the present invention takes from GIS operation cabinets, without additional power supply.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the micro- water treatment heating device of general GIS air chamber of the present invention；
Fig. 2 is the fractionation schematic diagram of the invention micro- water treatment heating device of general GIS air chamber；
Fig. 3 is breaker heating power optimization result of calculation in embodiment；
Fig. 4 is current transformer heating power optimization result of calculation in embodiment.
In figure, 1 is heating plate, and 2 is power supply wiring, and 3 is thermal-insulation baffle plate, and 4 is heat-insulation layer, and 5 is fixed bed, and 6 is that screw is tight
Buckle part.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As shown in Figure 1 and Figure 2, a kind of micro- water treatment heating device of general GIS air chamber of power optimized, the device includes adding
Thermosphere, heat-insulation layer 4 and fixed bed 5, zone of heating laminating GIS device housing are set, and zone of heating is drawn power supply wiring 2 and connects power supply
Power supply, heat-insulation layer 4 is wrapped in zone of heating outer surface, and be fixed on GIS device housing for zone of heating and heat-insulation layer 4 by fixed bed 5, plus
The heating power of thermosphere is configured to the normal operating temperature of the GIS device internal part when being heated using the heater not
Maximum heating power during more than setting value, the normal operating temperature setting value of GIS device internal part is 60 in the present embodiment
DEG C, the switchgear wrapped up in GIS device internal part here and GIS device, such as short-circuiting device, current transformer.
Wherein, zone of heating includes polylith heating plate 1 and thermal-insulation baffle plate 3, and it is flexible that heating plate 1 and thermal-insulation baffle plate 3 are arcuation
Material, the number of heating plate 1 is configured according to the heating power of zone of heating, and heating plate 1 is evenly distributed on GIS device housing week
Enclose, embedded thermal-insulation baffle plate 3 is isolated between adjacent two pieces of heating plates 1, and every piece of heating plate 1 is drawn power supply wiring 2 and connected
Power supply, the power supply of the connection of power supply wiring 2 that zone of heating is drawn is the power supply in GIS operation cabinets.Fixed bed 5 is cylinder
The adjustable hoop body structure of shape radius, the lateral opening end of fixed bed 5 is fixed by the screw part 6 that links closely, spiral shell in the embodiment
Silk links closely part 6 including screw rod and nut and is correspondingly arranged at the fixing hole at the lateral opening end of fixed bed 5, and described screw rod is worn
Cross described fixing hole and be fixed by nut, being screwed into the length of screw rod by changing nut changes cylindrical hoop body
Radius.
The device also includes control unit and execution unit, and control unit connects zone of heating, performs list by execution unit
Unit enters including control device relay for whether working, the fuse that failure removal is carried out to heater and to heater
The timer of row heating timing, and then control unit includes power switch, relay start stop switch and heat time load button.
Know that temperature is higher according to the micro- water Precipitation Characteristics of GIS device air chamber, micro- water precipitation rate is bigger, and amount of precipitation is more.But
Be the normal operating temperature of GIS internal units no more than 60 DEG C, limitation is made that to heating-up temperature.It is micro- by GIS device air chamber
The exceeded heat flow piercement simulation calculation that heats of water is optimized, by setting up the Fluid-solid-heat Coupling Model under heating state,
The thermal source of heating module inner heat power, the thermal convection current of hull outside and air, heating module and housing, housing and nitrogen are set
The correlated conditions such as heat transfer and environment temperature between gas, nitrogen and internal part, based on ANSYS Fluent thermodynamic fluids
Simulation software, carries out the decoupling computation that the micro- water of GIS device heats, and its computational mathematics model includes mass-conservation equation, moves
The Closure equation group that 4 equations such as amount conservation equation, energy conservation equation, state equation are constituted.
1) mass-conservation equation；According to mass conservation law, in flow process, the gross mass in system keeps constant,
I.e. quality in systems volume integral material derivative be equal to zero, be written as：
2) momentum conservation equation；The aggregated momentum rate of change of any system should be equal to and act on outside all in the system in flow field
Power make a concerted effort：
3) energy conservation equation；Rate is determined according to the conservation of energy, in flow process, the increment of system gross energy is equal to external force
To system work and the extraneous heat sum for coming into, can be expressed as：
4) state equation；The basic variable of motion of viscous is speed, pressure, temperature and density, therefore three basic
Equation (continuity equation, the equation of momentum and energy equation) is not enough to set up Closure equation group, need to supplement state equation to set up pressure
Relation between power, density and temperature.The physical quantity of generally description poised state fluid is pressure volume V and temperature T, contacts this
Relational expression between three variables is referred to as state equation, is represented by：
Wherein：ρ is density；V is volume；T is temperature；T is the time；P is pressure；cpIt is specific heat capacity；λ is fluid heat transferring system
Number；FiIt is unit quality mass force in some directions；ui,uj(i, j=1,2,3) is velocity in x1、x2、x3Direction point
Amount；The convection heat transfer' heat-transfer by convection that solid causes due to translate or rotating is represented,It is due to conduction
The hot-fluid for causing；R0It is gas universal constant.Four unknown numbers are v, p, T and F, and three fundamental equations add state equation just
Closing, can solve.The method coupled using subregion calculating, border, it is assumed that the Temperature Distribution on coupling boundary, to one of them
Region is solved, and draws the local heat flux density on coupling boundary and thermograde, is then solved using formula above another
One region, draws the new Temperature Distribution on coupling boundary, then is distributed the input as previous region using this, repeats above-mentioned meter
Calculate until convergence.It has been calculated the overall stable state temperature rise and airtight distribution of GIS device under heat effect.
According to heat flow piercement simulation result, the optimization design experiment of heating power, the power setting of heater are set up
For 2400,4800,7200,9600W, breaker uses two sets heaters, current transformer to be obtained using a set of heater
Breaker, the Distribution of temperature rise of current transformer air chamber different structure under different heating power, the experimental result such as institute of accompanying drawing 3 and 4
Show, transverse axis heating module power is the power of zone of heating in Fig. 3 and Fig. 4, longitudinal axis stable state maximum temperature is to be used in zone of heating
When corresponding heating power is heated in GIS device each part maximum temperature.For maximum lift air chamber temperature and breaker,
Current transformer body equipment maximum temperature is no more than 60 DEG C, and the breaker optimal heating power of single heater is obtained from Fig. 3
7200W, zone of heating is divided into three pieces of heating plates 1, every piece of 2400W, two groups of heating devices heats, because insulating barrier is current transformer
One layer of outermost, so choosing current transformer insulating barrier temperature is no more than 60 DEG C, from fig. 4, it can be seen that current transformer insulate
When layer temperature is no more than 60 DEG C, the optimal heating power 4800W of the single heater of current transformer, zone of heating is divided into two pieces of heating
Plate 1, one group of heating devices heat, the same current transformer of disconnecting switch.
Zone of heating uses the flexible module of arc, every piece of heating plate 1 width 800mm, thick 5mm, using silicon rubber in the present embodiment
Derive the end of power supply wiring 2 in glue heating plate 1, every piece of heating power 2400W, rated voltage 220V, side.Thermal-insulation baffle plate 3 will be heated
Plate 1 separates, the adjustable length of thermal-insulation baffle plate 3, respectively can be isolated polylith heating plate 1, so as to adjust GIS housing heated perimeters
And power.Under conditions of ensureing maximum temperaturerise no more than 60 DEG C of GIS device normal operating temperature, its heating effect is solid through hot-fluid
Coupling Simulation is calculated optimization, and specific result of calculation is as shown in Figure 3 and Figure 4.Analysis result obtains the optimal work(of breaker
Rate 7200W, under rated pressure 0.5MPa, air chamber density of nitrogen highest 5.64kg/m3, minimum 4.51kg/m3, near heated mould
Density of nitrogen near block is relatively low, and the density of nitrogen away from heating module is higher；Breaker body is under heating state due to dissipating
The limitation of heat condition, temperature rise highest can reach 59.95 DEG C or so, greatly improve the micro- water of breaker body surfacing
Separate out.Current transformer, the optimal 4800W of disconnecting switch heating power, current transformer chamber volume are smaller, flow range compared with
Narrow, density of nitrogen distribution highest 5.60kg/m3, minimum 5.46kg/m3, airtight changes in distribution scope are smaller；Current transformer gas
57.39 DEG C of room maximum temperature, is insulation sides and Secondary Winding part, and minimum temperature is bus part, substantially without temperature rise.
Warming plate wraps up heating plate 1 and thermal-insulation baffle plate 3 and fixed, it is ensured that heating plate 1 does not produce displacement, thickness 10mm,
Width 800mm, it is therefore intended that reduce scattering and disappearing for heat, improve the heating effect of zone of heating.
Fixed bed 5 is full wrap, and side is provided with guard plate apparatus, further zone of heating and heat-insulation layer 4 are protected,
Prevent rainwater, debris from entering, the width 800mm of fixed bed 5, thickness 5mm, junction uses three screw fastening devices, fastens model
Enclose and be provided with allowance, it is ensured that zone of heating is brought into close contact the heat insulation effect with heat-insulation layer 4 with GIS housings.
The heater highly versatile, heating power is optimal, and heating effect is good, and energy consumption is relatively low, and working stability, installation is torn open
Unload conveniently, beneficial to the expansion of GIS device site examining and repairing work.
Claims (6)
1. the micro- water treatment heating device of general GIS air chamber of a kind of power optimized, it is characterised in that the device include zone of heating,
Heat-insulation layer (4) and fixed bed (5), described zone of heating laminating GIS device housing are set, zone of heating draw power supply wiring (2) and
Connection power supply, described heat-insulation layer (4) is wrapped in zone of heating outer surface, and described fixed bed (5) is by zone of heating and insulation
Layer (4) is fixed on GIS device housing, and the heating power of zone of heating is configured to the GIS when being heated using the heater
The normal operating temperature of device interior part is no more than maximum heating power during setting value.
2. a kind of micro- water treatment heating device of general GIS air chamber of power optimized according to claim 1, its feature exists
Include polylith heating plate (1) and thermal-insulation baffle plate (3) in, described zone of heating, the number of described heating plate (1) is according to zone of heating
Heating power configured, described heating plate (1) is evenly distributed on GIS device casing surroundings, adjacent two pieces of heating plates (1)
Between embedded thermal-insulation baffle plate (3) isolated, every piece of heating plate (1) is drawn power supply wiring (2) and connects power supply.
3. a kind of micro- water treatment heating device of general GIS air chamber of power optimized according to claim 2, its feature exists
In described heating plate (1) and thermal-insulation baffle plate (3) is arcuation flexible material.
4. a kind of micro- water treatment heating device of general GIS air chamber of power optimized according to claim 1, its feature exists
In described fixed bed (5) is the adjustable hoop body structure of cylinder radius, and fixed bed (5) lateral opening end is linked closely by screw
Part (6) is fixed.
5. a kind of micro- water treatment heating device of general GIS air chamber of power optimized according to claim 1, its feature exists
In, the device also includes control unit and execution unit, and described control unit connects described zone of heating by execution unit,
Described execution unit include controlling the device relay for whether working, failure removal is carried out to heater fuse and
To heater heat the timer of timing, and then described control unit includes power switch, relay start stop switch
With heat time load button.
6. a kind of micro- water treatment heating device of general GIS air chamber of power optimized according to claim 1, its feature exists
In the power supply of power supply wiring (2) connection that zone of heating is drawn is the power supply in GIS operation cabinets.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611123838.5A CN106786111B (en) | 2016-12-08 | 2016-12-08 | A kind of micro- water treatment heating device of general GIS gas chamber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611123838.5A CN106786111B (en) | 2016-12-08 | 2016-12-08 | A kind of micro- water treatment heating device of general GIS gas chamber |
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| CN106786111B CN106786111B (en) | 2018-07-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631330A (en) * | 2018-11-20 | 2019-04-16 | 广西电网有限责任公司电力科学研究院 | Mutual inductor heating and thermal insulation air bag |
| CN110793196A (en) * | 2019-10-30 | 2020-02-14 | 广西电网有限责任公司电力科学研究院 | Heating device of current transformer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0222541A (en) * | 1988-07-11 | 1990-01-25 | Mitsubishi Electric Corp | Water detection sensor |
| CN105387342B (en) * | 2015-11-17 | 2016-10-26 | 国网新疆电力公司检修公司 | The micro-water treatment system of GIS air chamber |
| CN205353061U (en) * | 2016-02-04 | 2016-06-29 | 湖南工程学院 | A device that is arranged in little water content of short -term test GIS equipment |
| CN205691995U (en) * | 2016-06-16 | 2016-11-16 | 国网新疆电力公司检修公司 | The composite control apparatus administered for 750 kilovolts of GIS air chamber excessive water content |
| CN205681643U (en) * | 2016-06-16 | 2016-11-09 | 国网新疆电力公司检修公司 | The heater processing for 750 kilovolts of GIS air chamber excessive water content |
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2016
- 2016-12-08 CN CN201611123838.5A patent/CN106786111B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631330A (en) * | 2018-11-20 | 2019-04-16 | 广西电网有限责任公司电力科学研究院 | Mutual inductor heating and thermal insulation air bag |
| CN109631330B (en) * | 2018-11-20 | 2024-03-15 | 广西电网有限责任公司电力科学研究院 | Mutual inductor heating heat preservation gasbag |
| CN110793196A (en) * | 2019-10-30 | 2020-02-14 | 广西电网有限责任公司电力科学研究院 | Heating device of current transformer |
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