CN107229297A - A kind of transformer station and switchyard environment remote monitoring method - Google Patents
A kind of transformer station and switchyard environment remote monitoring method Download PDFInfo
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- CN107229297A CN107229297A CN201710478915.7A CN201710478915A CN107229297A CN 107229297 A CN107229297 A CN 107229297A CN 201710478915 A CN201710478915 A CN 201710478915A CN 107229297 A CN107229297 A CN 107229297A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1917—Control of temperature characterised by the use of electric means using digital means
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/1928—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperature of one space
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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Abstract
A kind of transformer station and switchyard environment remote monitoring method, category monitoring field.It builds the grid chart of transformer station to be monitored and switchyard room area, determines the connected relation between each grid, carries out dimension-reduction treatment, and simplified model simultaneously carries out sliding-model control, calculates the Temperature Distribution relation of room area environment；To the temperature distribution model of acquisition, carry out boundary condition and primary condition is calculated；By being compared with temperature measuring point observed temperature, carry out the error of correction model；According to amended temperature distribution model or Temperature Distribution relation, the room area for treating monitoring substation and switchyard carries out temperature control.It uses the method for calculating Temperature Distribution, temperature conduction problem is converted into flow conductance problem, the amount of calculation of control unit can be greatly reduced, even if temperature measuring point quantity is very limited, still accurate room temperature control effect can be obtained, avoid causing regional area overheat supercooling, can effectively lift the novel maintenance managerial skills of unattended transformer and distribution power station.
Description
Technical field
The invention belongs to environmental monitoring, more particularly to it is a kind of for transformer station and the remote monitoring side of switchyard environment
Method.
Background technology
Restricted by factors such as soil and environment, electric substation, switchyard and power distribution station etc. (referred to as becoming (matching somebody with somebody) power station)
Layout and build more and more difficult, compact even underground station is continued to bring out.These station institute internal environments are often that hyperpyrexia is high
Wet, not smooth, dirt accumulation of divulging information, there is poison gas not discharge；In addition, the substantial amounts such as switchyard and power distribution station, distribution is wide,
Daily periodic maintenance can not almost be realized.
To improve the equipment operating environment for becoming (matching somebody with somebody) power station, air-conditioning, dehumidification equipment are installed additional in station so that become (matching somebody with somebody) power station
Equipment operating environment be greatly improved.
However, these air-conditioning equipments still need to artificial manual start and stop at present.Artificial start and stop air-conditioning, not only needs a large amount of human hands, and
And randomness is strong.If the opening time too early, wastes the energy；And the opening time is partially late, then indoor environment temperature is too high and influence is set
The standby life-span.My research and development experience of the company in terms of electric power safety monitoring for many years is relied on, with reference to field demand, a set of change (matching somebody with somebody) is built
Power station air conditioner remote monitoring system, it is ensured that become (matching somebody with somebody) power station indoor temperature and humidity and be in zone of reasonableness, to lifting power supply enterprise peace
The full level of production is significant.
In the prior art, it has been to compare into that the temperature or humidity that become in (matching somebody with somebody) power station room are controlled using remote monitoring
Ripe technology, for example, setting multiple temperature and humidity measure sensors becoming (matching somebody with somebody) power station indoor scene, is gathered throughout the room
Epidemic disaster measured value, according to the epidemic disaster measured value of collection in worksite, using the controller with CPU, remote control becomes
Air-conditioning in (matching somebody with somebody) power station room, dehumidification equipment operation, and according to the setting value of epidemic disaster, remote control air-conditioning, dehumidification equipment
Start or stop, final realize becomes the regulation of epidemic disaster and data transmission and record in (matching somebody with somebody) power station room.
But be present problems in above-mentioned control model, i.e., (match somebody with somebody) in the room of power station, it is necessary to set multiple in monitored change
On the one hand temperature detection sensor, while detecting the observed temperature of indoor many places, be so the increase in actually detected sensor
In-site installation quantity and installation work amount, add disposable input/acquisition cost, and the thermometric mode is for complex environment
(situations such as temperature measuring point is close to heat source body or excessively long and narrow room) is easily judged by accident, causes regional area to overheat or be subcooled；Separately
On the one hand, multiple temperature detection sensors are set, epidemic disaster controller certainly will be caused to need to perform multiple monitoring process, are increased
The I/O volumes of transmitted data and workload of operation of epidemic disaster controller, quick operation to epidemic disaster controller and improves it
Reaction sensitivity is unfavorable.In addition, also adding the disposable acquisition cost of epidemic disaster controller, temperature detection sensor quantity
Increase, also increase out of order probability, difficulty brought to on-site maintenance and maintenance.In addition, in order to solve air-conditioning thermometric
Apart from limitation, typically increase the quantity of digital external temperature probe.In this case, for larger space switch gear room
(area is more than the large space of 100 square meters), temperature-measuring range can be greatly improved.But transformer substation switch indoor location indoors
The signal that temperature probe is laid out by high-tension apparatus is disturbed, and the winding displacement of probe, setting height(from bottom) are limited by electrical equipment safe distance
System can not be installed.For these " unreachable " region thermometrics, temperature value can only be obtained by indirect method.So it is difficult to combining
Temperature in solution high-tension apparatus room is specifically distributed, and causes air-conditioning system to judge by accident.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of transformer station and switchyard environment remote monitoring method.Its
Existing remote monitoring becomes on the basis of (matching somebody with somebody) power station indoor temperature control system, by the Temperature Distribution for setting up transformer substation switch room
Figure, using the method for calculating Temperature Distribution, is converted into flow conductance problem by temperature conduction problem, amount of calculation is greatly reduced, only
Several parameters are provided, the temperature profile with regard to that can obtain transformer substation switch room, even if temperature measuring point quantity is very limited, still may be used
To obtain accurate room temperature control effect, it is to avoid cause regional area overheat supercooling, can effectively be lifted unattended
Become the novel maintenance managerial skills in (matching somebody with somebody) power station, reduction is purchased and maintenance cost.
The technical scheme is that：A kind of transformer station and switchyard environment remote monitoring method are provided, including indoors
Site setup array temperature sensor, the measured value for collection site temperature；Temperature controller is set, according to the actual measurement of scene temperature
Value and the difference of setting value, to control the operation or stopping of air-conditioning device, are monitored and adjust to indoor environment temperature, and by room
The operational factor teletransmission of interior temperature measured value and air-conditioning device carries out display, data storage accordingly to center of the centralized monitor
And access or the playback of historical data, it is characterized in that：
The room area for treating monitoring substation and switchyard carries out gridding, obtains one group of multiple grid cell, accordingly
Build the grid chart of transformer station to be monitored and switchyard room area；
The grid cell where air-conditioning device is determined, and according to the installation situation of physical device, determines the gas of air-conditioning device
Flow outbound course and path；
Air-conditioning device operation is opened, after indoor temperature is stable, trip temperature is entered to each grid cell position respectively
The test of actual value；
The position of grid cell where observed temperature minimum point and peak, sets one group of setting TEMP respectively
Device, the measured value for collection site temperature；
According to the actual building structure in scene, the connected relation between each grid is determined, actual complex space is simplified
For simple space or progress dimension-reduction treatment, simplified model simultaneously carries out sliding-model control, computational aerodynamics problem is converted into
The conducting problem of air-flow；
Build the temperature profile of transformer station to be monitored and switchyard room area；
The temperature distribution model of room area is built, the temperature of a room area environment is calculated on the basis of this model
Distribution relation；
To the temperature distribution model of acquisition, carry out boundary condition and primary condition is calculated；
By being compared with temperature measuring point observed temperature, carry out the error of correction model；
When result of calculation and temperature-measuring results error are more than the degree of error that error is set, Adjustable calculation step delta t value weight
It is new to calculate, correction result；
Carry out 2-3 corrected Calculation, you can reach the numerical result of needs, meet the requirement for calculating and controlling in real time；
According to amended temperature distribution model or Temperature Distribution relation, the indoor area of monitoring substation and switchyard is treated
Domain carries out temperature control.
Wherein, the connected relation between each described grid, is determined according to the architectural composition of Indoor environment.
Specifically, according to the architectural composition of the Indoor environment, being built according to whether there is between each grid cell
Cut-off or wall, to determine whether connected between two adjacent mesh.
Further, described temperature distribution model ties up the Navier-Stroke equations of condition for satisfaction 1.
Navier-Stroke equation u (x, t) described in it, which are used, is expressed as below form：
Wherein, u (x, t) is temperature on X-axis (the air-flow direction of propagation) and the binary function of time；For u (x, t) on
T partial derivative,Partial derivative for u (x, t) on X, X is the distance that initial position is left along the air-flow direction of propagation, and unit is
Rice, t is the propagation time of ripple, and the second is unit；C is spread speed, and unit is m/s.
Specifically, air-flow outbound course or the air-flow direction of propagation of the described X-axis for air-conditioning device.
Further, described discretization is carried out according to the following steps：
From the definition of partial derivative, obtainWithDiscrete formula
Wherein, Δ x, Δ t are the step-length under limiting form, as Δ x, Δ t all unusual hours,WithCan be by above-mentioned two
Group formula forms equation below after substituting
The difference form of above-mentioned formula can be obtained
Formula that can be under is calculatedValue
Wherein,For numerical solution, n, n+1 is the sequence number at two adjacent intervals of a material calculation, and i, i+1 is x coordinate
Two adjacent discrete coordinates of axle；Finally, the one-dimensional simplified formula of Navier-Stroke equations is obtained.
Specifically, when the boundary condition described in progress and primary condition are calculated, existing temperature measuring point temperature is substituted into
The boundary condition of the one-dimensional simplified formula of Navier-Stroke equations, including air-conditioner air outlet temperature u0, and other temperature measuring points
Observed temperature ui, the numerical solution of the conduction of velocity of air-flow in the direction of the x axis is calculated, the point is calculated according to the conduction of velocity of air-flow
Estimation temperature, be that corrected Calculation step-length is prepared in next step.
Air-conditioner air outlet temperature u described in it0, obtained according to actual temperature sensor measurement.
Further, described by being compared with temperature measuring point observed temperature in the error step come correction model, by with
Temperature measuring point observed temperature relatively carrys out the error of correction model, and simulation is normally carried out when error is less than predetermined value and is calculated, works as error
More than setting the upper limit when then shorten each dummy spacers step-length.
Compared with the prior art, it is an advantage of the invention that：
1. indoors in temperature controlled processes, temperature conduction problem is converted into flow conductance problem, meter can be greatly reduced
Calculation amount, as long as providing several parameters, the temperature profile with regard to transformer substation switch room can be obtained, even if temperature measuring point quantity has very much
Limit, still can obtain accurate room temperature control effect；
2. controlling indoor temperature using temperature profile or temperature distribution history, indoor temperature transmitter can be greatly reduced
Setting quantity, reduce house wiring, setting penetration pipe, (power transformation safety code regulation transformer station house wiring must use poling
Structure type, to meet fire-proof and damp-proof requirement) workload, it is to avoid because equipment installation site influence indoor temperature transmitter is set
The uniformity problems put；
3. in calculating process, simulation material calculation can be adaptively adjusted according to error, reduce to greatest extent artificial
Intervene control process, intelligence degree is high.
Brief description of the drawings
Fig. 1 is the block diagram of control method of the present invention；
Fig. 2 is the temperature curve schematic diagram of of the invention grid cell；
Fig. 3 is transformer station to be monitored and switchyard room area building structure schematic diagram；
Fig. 4 be it is simplified after transformer station to be monitored and switchyard room area plane grid schematic diagram；
Fig. 5 is the temperature curve schematic diagram of each grid cell of former temperature control system；
Fig. 6 is the temperature curve schematic diagram for using each grid cell after the technical program.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
General industry air conditioner temperature sensor uses thermistor temperature detecting.Air-conditioning temperature-sensitive resistance occurs for temperature change
Change, air-conditioner temperature processing controller determines the running status of air-conditioning according to thermometric value.The air-conditioning thermometric mode is for complexity
Environment (, close to heat source body, room is excessively long and narrow for temperature measuring point) is easily judged by accident, causes regional area overheat supercooling.
In order to solve air-conditioning thermometric apart from limitation, increase digital external temperature probe (see Fig. 1).For compared with
Large space switch gear room (area is more than the large space of 100 square meters), can greatly improve temperature-measuring range.But transformer station indoors
The signal that switch indoor location temperature probe is laid out by high-tension apparatus is disturbed, and the winding displacement of probe, setting height(from bottom) are electrically set
Standby safe distance limitation can not be installed.For these " unreachable " region thermometrics, temperature value can only be obtained by indirect method.Institute
To be difficult that the temperature in comprehensive understanding high-tension apparatus room is specifically distributed, air-conditioning system is caused to judge by accident.
In order to overcome air-conditioning thermometric mode to produce erroneous judgement problem for complex environment, the present invention provides a kind of calculating temperature point
The mathematical modeling of cloth, is employed in CFD (Computational Fluid Dynamics computational aerodynamicses, abbreviation CFD)
Navier-Stroke methods, as long as providing several parameters, air outlet temperature, air conditioner wind speed, the temperature of several temperature measuring points, with regard to energy
The temperature profile of transformer substation switch room is obtained, even if temperature measuring point quantity is very limited, accurate room can so be obtained by appointing
Between Temperature Distribution, it is to avoid cause regional area overheat supercooling.
Technical scheme is, it is necessary to solve the model of the Temperature Distribution in indoor complex environment, and in this model
On the basis of calculate the Temperature Distribution relation of an environment, it is final that we select more complicated transformer station's indoor scene to enter
Go and calculated and test, passed through the correctness of on-the-spot test model.
The control method and specific steps of the technical program are implemented, and see shown in Fig. 1.
Step 1：Simplify spatial model, reduced equation：
Simplify spatial model：
Three-dimensional space model progress high energy highly reduces scene temperature, air-flow velocity situation, has the disadvantage that amount of calculation is huge
Simplified model, by complex space simplify simple space or carry out dimension-reduction treatment (three dimensions problem is reduced to two dimension
Plane problem, two dimensional surface problem is reduced to one-dimensional problem), and simplified model carry out sliding-model control, in this project we
Three dimensions dimensionality reduction to one-dimensional linear problem, element number is bigger, calculates that progress is higher, and computation complexity is from 0 (n3) reduction
For 0 (n)
Reduced equation：
The CFD problems will be first converted into the conducting problem of air-flow, u (x, t) meets the Navier-Stroke equations of 1 dimension：
Wherein, u (x, t) be temperature on X-axis (the air-flow direction of propagation) and the binary function of time,For u (x, t) on
T partial derivative,Partial derivative for u (x, t) on x, X is the distance that initial position is left along the air-flow direction of propagation, and unit is
Rice, t is the propagation time of ripple, and unit is the second, and c is spread speed, and unit is m/s.
From the definition of partial derivative, obtainWithDiscrete formula
Wherein, Δ x, Δ t are the step-length under limiting form, as Δ x, Δ t all unusual hours,WithCan be by above-mentioned two
Group formula forms equation after substituting
The difference form of above-mentioned formula can be obtained
Formula that can be under is calculatedValue
WhereinFor numerical solution, n, n+1 is the sequence number at two adjacent intervals of a material calculation, and i, i+1 is x coordinate axle
Two adjacent discrete coordinates.Formula (6) is final one-dimensional simplified formula.
Step 2:Boundary condition and primary condition are calculated：
Boundary condition (the boundary condition that temperature measuring point temperature substitutes into Navier-Stroke discrete equations (6) will be had:Border
Condition refers to the condition that solution of equations should be met on moving boundaries), including air-conditioner air outlet temperature u0(according to actual survey
Warm probe measurement is obtained), and other temperature measuring points observed temperature ui, the conduction speed of air-flow in the direction of the x axis can be calculated
The numerical solution of degree, the estimation temperature of the point is calculated according to the conduction of velocity of air-flow, is that step 3 corrected Calculation step-length is prepared.
Step 3:Result of calculation amendment and control principle：
By being compared the error come correction model with temperature measuring point observed temperature, in general it is normally carried out when error very little
Simulation is calculated, and each dummy spacers step-length is then shortened when error exceedes the upper limit of our settings.
Embodiment：
Step 1:Simplify spatial model, simplify numerical model
Site environment brief introduction：
Certain transformer station's doors structure is as shown in Figure 3, its 1 layer long 30 meters, wide 8 meters, and there is the separation of twice concrete walls centre,
Other parts UNICOM, 0.65 meter of intermediate region lifting.
After simplified, above-mentioned 1 layer of plane net trrellis diagram is as shown in Figure 4.
1 layer of grid chart numbering of the transformer station is as shown in the table：
| 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 |
| 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 |
| 40 | 39 | 38 | 37 | 36 | 35 | 34 | 33 | 32 | 31 |
Step 2:Boundary condition and primary condition are calculated
According to the building structure of the transformer station, the communication direction of each grid cell is determined.
Wherein, grid cell is in lateral attitude UNICOM, such as grid cell 30, grid cell 29.
Grid cell 1, grid cell 11, grid cell 21, grid cell 31 are in lengthwise position UNICOM
Grid cell 10, grid cell 20, grid cell 30, grid cell 40 are in lengthwise position UNICOM, and remaining direction is not
Connection.
In grid cell 3, grid cell 8 is provided with temperature measurement module, and air outlet position is the position of cell 1, when wind direction is solid
In the case of fixed (all the time to the left), the problem can be simplified to 1 dimension Navier-Stroke problems.
Boundary condition is set：
Wherein, i, j are the numbering of cell,
For heat source position；tsFor steady state value；It is steady state value for air outlet temperature；
Directly utilize formula (6)：
WhereinThe temperature walked for the 1st position n and n+1
Δ t=0.25 (second)
C is wind speed, 3 (m/s) (according to air-conditioning specification gain of parameter).
Step 3:Result of calculation amendment and control principle
Actual measurement grid cell temperature is as follows：
| Unit | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Temperature | 22 | 22 | 22 | 22.68 | 24.23 | 26.12 | 27.79 | 28.928 | 29.01 | 27.56 |
Grid cell 1 arrives the temperature curve of grid cell 10 as shown in Figure 2.
According in grid cell 3, grid cell 8 is provided with temperature measurement module.
When being calculated, using following numerical value and setting：
Material calculation 1 is Δ t=0.25 (second)
Material calculation 2 is Δ t=0.20 (second)
| Unit | Δt | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Calculate 1 | 0.25 | 22 | 22 | 22 | 22.68 | 24.23 | 26.12 | 27.79 | 28.928 | 29.01 | 27.56 |
| Calculate 2 | 0.20 | 22 | 22.6 | 23.1 | 22.98 | 24.43 | 26.33 | 27.81 | 28.928 | 29.15 | 27.63 |
| Thermometric | 23.4 | 29.3 |
When result of calculation and temperature-measuring results error are larger, during the degree of error set more than error, the value for reducing Δ t is counted again
Calculate, the size of error amount, correction result can be reduced, probably 40-50 seconds time is needed because obtaining the cycle of real time temperature every time
(sampling time), generally carry out 2-3 Navier-Stroke formula and calculate the numerical value knot that can just reach that we need
Really, the requirement calculated in real time is met.
What is provided in Fig. 5 is the temperature curve that grid cell 40 is arrived using grid cell 1 during former temperature control system, and Fig. 6 is provided
The temperature curve of grid cell 40 is arrived using grid cell 1 after the technical program.
The two groups of vertical lines in left and right are respectively two big heat source positions in figure, and wavy curve is the curve of temperature conduction.
As seen from the figure, after using the technical program, the waveform change of temperature propagation curve is obviously improved.
Technical solution of the present invention can directly be generalized to linear working region, the working region of L-type, T-shaped work
Region, situations such as multiple thermals source, change thermal source situation and multiple air-conditionings can also be extended to etc., with good adaptability.
Technical scheme, by setting up the temperature profile of transformer substation switch room, using calculating Temperature Distribution
The temperature conduction problems of 2 dimensions are converted into the flow conductance problem of 1 dimension by method, and control unit or controller can be greatly reduced
Amount of calculation, as long as providing several operational factors of air-conditioning device, with reference to the doors structure plane grid of transformer station, with regard to that can obtain
The temperature profile of transformer substation switch room is obtained, even if temperature measuring point quantity is very limited, accurate room still can be obtained
Temperature control effect, it is to avoid cause regional area overheat supercooling, can effectively lift the novel maintenance in unattended change (matching somebody with somebody) power station
Managerial skills.
It the method can be widely used in the indoor environment monitoring field that power station (is matched somebody with somebody) in change.
Claims (10)
1. a kind of transformer station and switchyard environment remote monitoring method, are included in indoor scene and set array temperature sensor, use
In the measured value of collection site temperature；Temperature controller is set, according to the measured value of scene temperature and the difference of setting value, to control air-conditioning
The operation or stopping of device, are monitored and adjust to indoor environment temperature, and by indoor temperature measured value and air-conditioning device
Operational factor teletransmission to center of the centralized monitor, carry out access or the playback of display, data storage and historical data accordingly,
It is characterized in that：
The room area for treating monitoring substation and switchyard carries out gridding, obtains one group of multiple grid cell, builds accordingly
Transformer station to be monitored and the grid chart of switchyard room area；
The grid cell where air-conditioning device is determined, and according to the installation situation of physical device, determines that the air-flow of air-conditioning device is defeated
Outgoing direction and path；
Air-conditioning device operation is opened, after indoor temperature is stable, enters trip temperature to each grid cell position respectively actual
The test of value；
The position of grid cell where observed temperature minimum point and peak, sets one group of setting temperature sensor respectively, uses
In the measured value of collection site temperature；
According to the actual building structure in scene, the connected relation between each grid is determined, actual complex space is reduced to letter
Single space carries out dimension-reduction treatment, and simplified model simultaneously carries out sliding-model control, computational aerodynamics problem is converted into air-flow
Conducting problem；
Build the temperature profile of transformer station to be monitored and switchyard room area；
The temperature distribution model of room area is built, the Temperature Distribution of a room area environment is calculated on the basis of this model
Relation；
To the temperature distribution model of acquisition, carry out boundary condition and primary condition is calculated；
By being compared with temperature measuring point observed temperature, carry out the error of correction model；
When result of calculation and temperature-measuring results error are more than the degree of error that error is set, Adjustable calculation step delta t value is counted again
Calculate, correction result；
Carry out 2-3 corrected Calculation, you can reach the numerical result of needs, meet the requirement for calculating and controlling in real time；
According to amended temperature distribution model or Temperature Distribution relation, the room area for treating monitoring substation and switchyard enters
Trip temperature is controlled.
2. according to the transformer station described in claim 1 and switchyard environment remote monitoring method, it is characterized in that each described grid
Between connected relation, according to the architectural composition of Indoor environment determine.
3. according to the transformer station described in claim 2 and switchyard environment remote monitoring method, it is characterized in that according to the building
Architectural composition in thing room, according to whether there is building partition or wall between each grid cell, to determine two adjacent mesh
Between whether connect.
4. according to the transformer station described in claim 1 and switchyard environment remote monitoring method, it is characterized in that described temperature point
Cloth model ties up the Navier-Stroke equations of condition for satisfaction 1.
5. according to the transformer station described in claim 4 and switchyard environment remote monitoring method, it is characterized in that described Navier-
Stroke equation u (x, t) are used and form are expressed as below：
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Wherein, u (x, t) is temperature on X-axis (the air-flow direction of propagation) and the binary function of time；It is u (x, t) on t's
Partial derivative,Partial derivative for u (x, t) on X, X is the distance that initial position is left along the air-flow direction of propagation, and unit is rice,
T is the propagation time of ripple, and the second is unit；C is spread speed, and unit is m/s.
6. according to the transformer station described in claim 5 and switchyard environment remote monitoring method, it is characterized in that described X-axis is sky
Adjust air-flow outbound course or the air-flow direction of propagation of device.
7. according to the transformer station described in claim 1 and switchyard environment remote monitoring method, it is characterized in that described discretization
Carried out according to the following steps：
From the definition of partial derivative, obtainWithDiscrete formula
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<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>3</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein, Δ x, Δ t are the step-length under limiting form, as Δ x, Δ t all unusual hours,WithCan be public by above-mentioned two groups
Formula forms equation below after substituting
<mrow>
<mfrac>
<mrow>
<mi>u</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>x</mi>
<mo>+</mo>
<mi>&Delta;</mi>
<mi>x</mi>
</mrow>
<mo>)</mo>
</mrow>
<mo>-</mo>
<mi>u</mi>
<mrow>
<mo>(</mo>
<mi>x</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mi>&Delta;</mi>
<mi>t</mi>
</mrow>
</mfrac>
<mo>+</mo>
<mi>c</mi>
<mi>u</mi>
<mrow>
<mo>(</mo>
<mi>x</mi>
<mo>,</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mfrac>
<mrow>
<mi>u</mi>
<mo>(</mo>
<mrow>
<mi>x</mi>
<mo>+</mo>
<mi>&Delta;</mi>
<mi>x</mi>
</mrow>
<mo>)</mo>
<mo>-</mo>
<mi>u</mi>
<mrow>
<mo>(</mo>
<mi>x</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<mi>&Delta;</mi>
<mi>x</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mn>0</mn>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>4</mn>
<mo>)</mo>
</mrow>
</mrow>
The difference form of above-mentioned formula can be obtained
<mrow>
<mfrac>
<mrow>
<msubsup>
<mi>u</mi>
<mi>i</mi>
<mrow>
<mi>n</mi>
<mo>+</mo>
<mn>1</mn>
</mrow>
</msubsup>
<mo>-</mo>
<msubsup>
<mi>u</mi>
<mi>i</mi>
<mi>n</mi>
</msubsup>
</mrow>
<mrow>
<mi>&Delta;</mi>
<mi>t</mi>
</mrow>
</mfrac>
<mo>+</mo>
<msubsup>
<mi>cu</mi>
<mi>i</mi>
<mi>n</mi>
</msubsup>
<mfrac>
<mrow>
<msubsup>
<mi>u</mi>
<mi>i</mi>
<mi>n</mi>
</msubsup>
<mo>-</mo>
<msubsup>
<mi>u</mi>
<mrow>
<mi>i</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</msubsup>
</mrow>
<mrow>
<mi>&Delta;</mi>
<mi>x</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mn>0</mn>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>5</mn>
<mo>)</mo>
</mrow>
</mrow>
Formula that can be under is calculatedValue
<mrow>
<msubsup>
<mi>u</mi>
<mi>i</mi>
<mrow>
<mi>n</mi>
<mo>+</mo>
<mn>1</mn>
</mrow>
</msubsup>
<mo>=</mo>
<msubsup>
<mi>u</mi>
<mi>i</mi>
<mi>n</mi>
</msubsup>
<mo>-</mo>
<msubsup>
<mi>cu</mi>
<mi>i</mi>
<mi>n</mi>
</msubsup>
<mfrac>
<mrow>
<mi>&Delta;</mi>
<mi>t</mi>
</mrow>
<mrow>
<mi>&Delta;</mi>
<mi>x</mi>
</mrow>
</mfrac>
<mrow>
<mo>(</mo>
<msubsup>
<mi>u</mi>
<mi>i</mi>
<mi>n</mi>
</msubsup>
<mo>-</mo>
<msubsup>
<mi>u</mi>
<mrow>
<mi>i</mi>
<mo>-</mo>
<mn>1</mn>
</mrow>
<mi>n</mi>
</msubsup>
<mo>)</mo>
</mrow>
<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>6</mn>
<mo>)</mo>
</mrow>
</mrow>
Wherein,For numerical solution, n, n+1 is the sequence number at two adjacent intervals of a material calculation, and i, i+1 is x coordinate axle two
Individual adjacent discrete coordinates；Finally, the one-dimensional simplified formula of Navier-Stroke equations is obtained.
8. according to the transformer station described in claim 1 and switchyard environment remote monitoring method, it is characterized in that described in progress
When boundary condition and primary condition calculating, existing temperature measuring point temperature is substituted into the one-dimensional simplified formula of Navier-Stroke equations
Boundary condition, including air-conditioner air outlet temperature u0, and other temperature measuring points observed temperature ui, calculate air-flow in the direction of the x axis
Conduction of velocity numerical solution, the estimation temperature of the point is calculated according to the conduction of velocity of air-flow, is corrected Calculation in next step
Step-length is prepared.
9. according to the transformer station described in claim 8 and switchyard environment remote monitoring method, it is characterized in that described air-conditioning goes out
Draught temperature u0, obtained according to actual temperature sensor measurement.
10. according to the transformer station described in claim 1 and switchyard environment remote monitoring method, it is characterized in that it is described by with
Temperature measuring point observed temperature relatively comes in the error step of correction model, by being compared with temperature measuring point observed temperature come correction model
Error, simulation is normally carried out when error is less than predetermined value and is calculated, each simulation is then shortened when error exceedes the upper limit of setting
Interval steps.
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