CN109358677B - Temperature and humidity sensor distribution method of automatic environment adjusting system of transformer substation distribution room - Google Patents
Temperature and humidity sensor distribution method of automatic environment adjusting system of transformer substation distribution room Download PDFInfo
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- CN109358677B CN109358677B CN201811350428.3A CN201811350428A CN109358677B CN 109358677 B CN109358677 B CN 109358677B CN 201811350428 A CN201811350428 A CN 201811350428A CN 109358677 B CN109358677 B CN 109358677B
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- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
Abstract
The invention discloses a temperature and humidity sensor distribution method of an environment automatic adjusting system of a transformer substation distribution room, which comprises the following steps: establishing a three-dimensional geometric simulation model of a distribution room of a transformer substation by using Ansys, carrying out simulation analysis on a temperature field and a humidity field of the distribution room by using the Ansys, obtaining temperature field and humidity field distribution simulation diagrams at different heights, and selecting temperature and humidity sensors for point distribution through the simulation diagrams; the technical problems that in the prior art, the sensor arrangement for monitoring the temperature and humidity environment of the power distribution room of the transformer substation depends on manual experience or is convenient and easy to install, the data acquired by the installed sensor is not representative for the description of the environmental parameters of the power distribution room, the temperature and humidity conditions of the power distribution room of the transformer substation cannot be comprehensively monitored and known, and the environmental parameters of the power distribution room cannot be effectively controlled to be adjusted are solved.
Description
Technical Field
The invention belongs to the field of automatic control, and particularly relates to a temperature and humidity sensor distribution method of an environment automatic adjusting system of a transformer substation distribution room.
Background
Whether the operation of the transformer substation is normal or not is directly related to the quality of regional power supply. A plurality of power transformation operation devices are installed in important parts such as a switch room, a capacitor room and the like in the transformer substation, and the environment requirement of the transformer substation on the normal operation of the devices is high. Meanwhile, along with the gradual increase of the construction and the operation quantity of the unattended transformer substation in China, higher requirements are put forward on the operation reliability of the equipment; the operating environment of the equipment has a great influence on the service life and the operating quality of the equipment. Due to the influence of a plurality of factors, the lack of effective supervision of indoor temperature and humidity seriously endangers the reliable operation of the switch equipment and the safety of operation and maintenance personnel if the indoor operating environment does not reach the standard for a long time. The system has the advantages of ensuring good operation environment, improving the operation reliability of the distribution room and ensuring the personal and equipment safety, and has important significance.
With the development of electronic technology, the recent measurement technology has also been developed rapidly, and an electronic temperature and humidity sensor is appeared to convert the temperature and humidity into electrical signals which can be easily measured and processed, and the temperature and humidity sensor is generally used for measuring the temperature and the relative humidity. Through gathering the change distribution room humiture, in time master the change of distribution room internal and external environment humiture, utilize control strategy to start environment regulation controlling means, the quick adjustment becomes distribution room humiture and is in setting for the within range, plays the key role to the safe and stable operation of change distribution equipment.
The temperature and humidity data measured by the temperature and humidity sensor can fully reflect indoor and outdoor actual conditions, and the numerical value is representative, most of the conventional temperature and humidity sensor distribution installation work is completed by manual experience or installation convenience, so that the data acquired by the installed sensor is not representative for the description of the environmental parameters of the distribution room, the temperature and humidity conditions of the distribution room of the transformer substation cannot be monitored and known comprehensively, and the environmental parameters of the distribution room cannot be adjusted by effective control.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the temperature and humidity sensor distribution method of the automatic environment adjusting system of the power distribution room of the transformer substation is provided, and technical problems that in the prior art, sensor arrangement for temperature and humidity environment monitoring of the power distribution room of the transformer substation depends on manual experience or installation is convenient and easy to complete, data acquired by a sensor installed in the prior art is not representative for description of environmental parameters of the power distribution room, the temperature and humidity conditions of the power distribution room of the transformer substation cannot be comprehensively monitored and known, and the environmental parameters of the power distribution room cannot be adjusted through effective control are solved.
The technical scheme of the invention is as follows:
a temperature and humidity sensor distribution method of an environment automatic adjusting system of a transformer substation distribution room comprises the following steps: the method comprises the steps of establishing a three-dimensional geometric simulation model of a distribution room of the transformer substation by using Ansys, carrying out simulation analysis on a temperature field and a humidity field of the distribution room by using the Ansys, obtaining temperature field and humidity field distribution simulation graphs at different heights, and selecting temperature and humidity sensors for point distribution through the simulation graphs.
The method for establishing the three-dimensional geometric simulation model of the transformer substation distribution room by using Ansys comprises the following steps of:
step 1, collecting parameters needed by modeling of a distribution room of a transformer substation, including model parameters of the distribution room of the transformer substation and the number n of foundation windows for ventilationdAnd parameters, the number of the ventilation fans nfParameters, the number of switch cabinets in the distribution room, the position of the distribution room and the parameters; the distribution room model parameters comprise length L, width W and height H; the ventilation foundation window parameters comprise the wall plane position of the ventilation foundation window and the ventilation foundation window resistance coefficient; the parameters of the ventilator comprise the plane position of the wall body where the ventilator is located and the flow of the ventilator; a distribution outdoor environment temperature parameter Tout and an outdoor relative humidity parameter Dout of the transformer substation; the method comprises the following steps of (1) measuring a wall temperature parameter Twall, an indoor environment temperature parameter Tin and an indoor relative humidity parameter Din of a power distribution room of the transformer substation; the method comprises the following steps that (1) the maximum value Tmax of the environmental temperature and the maximum value Dmax of the relative humidity of the operating environment in a distribution room of the transformer substation are required; the parameters of the switch cabinet in the distribution room comprise the heating power P of a single switch cabinetkAnd a switch cabinet porosity xi;
step 2, establishing a three-dimensional geometric simulation model of the distribution room of the transformer substation in Ansys by using the parameters required for modeling of the distribution room of the transformer substation, which are acquired in the step 1;
step 3, simplifying the model; neglecting the influence of auxiliary equipment in the high-voltage distribution room on fluid flow, setting a heat source of a switch cabinet of the distribution room as a surface heat source, and setting the enclosure structure of the high-voltage distribution room as uniform and consistent heat transfer performance; thereby obtaining a simplified three-dimensional geometric simulation model of the substation distribution room.
The method for carrying out simulation analysis on the temperature field and the humidity field of the power distribution room by using the Ansys to obtain the temperature field and humidity field distribution simulation diagrams at different heights comprises the following steps:
step 4, determining a calculation domain of a flow field of the power distribution chamber on the premise of expressing the flow characteristic of fluid in the power distribution chamber to the maximum extent, dispersing the simulation model in the calculation domain by adopting a hexahedral structure grid, then automatically dividing the grid of the power distribution chamber at the local position comprising a switch cabinet, a fan and a vent, and carrying out local encryption processing on the calculation domain to obtain the grid unit number and the node number after grid refinement;
step 5, setting boundary conditions and initial conditions of the simulation model by using the power distribution room, the foot margin window for ventilation, the ventilation fan, the power distribution room switch cabinet and the indoor and outdoor environmental parameters of the power distribution room in the step 1;
step 6, setting a solving strategy, setting a calculation model as an RNG k-turbulence model, setting a solving method as a simple algorithm, setting solving precision as a second-order attack style, and setting iteration times N and a termination condition; the simulation termination condition is that the energy residual is less than 10-7Or inlet and outlet flow error less than 10-4；
And 7, starting simulation until a simulation termination condition is reached, and acquiring temperature field and humidity field distribution simulation graphs at different heights.
The method for selecting the temperature and humidity sensors for point distribution through the simulation diagram comprises the following steps: by analyzing the temperature field and the humidity field distribution simulation diagrams at different heights, the temperature and humidity sensor is installed at the following optimal points:
are respectively at
Selecting 4 points with the highest temperature and 4 points with the lowest temperature as the mounting points of the temperature sensors at the H position to acquire representative temperature data of temperature sensitive areas with different heights, wherein the representative temperature data are respectively arranged at the positions
And 4 points with the highest relative humidity and 4 points with the lowest relative humidity are selected at the H position to serve as installation points of the humidity sensor, so that the representative relative humidity data of the relative humidity sensitive areas with different heights can be obtained.
The invention has the beneficial effects that:
according to the invention, the actual parameters of the transformer substation on site are collected, the collected actual parameters are used for modeling the transformer substation distribution room, Ansys is used for simulation analysis of the temperature field and the humidity field of the distribution room, the temperature field and the humidity field distribution simulation diagrams at different heights are obtained, the obtained temperature field and humidity field distribution simulation diagrams can reflect the accurate temperature and humidity conditions around the distribution room, and the temperature and humidity sensor optimized distribution points are selected through the distribution simulation diagrams, so that temperature and relative humidity data are obtained and transmitted to the environment regulation control system of the transformer substation; through having solved prior art medium temperature humidity sensor stationing installation work and mostly rely on artificial experience or install just easy nature and accomplish for the data that the sensor acquireed do not have the representativeness to the environmental parameter description of electricity distribution room, can not monitor comprehensively and know the humiture condition of transformer substation's electricity distribution room, so that can not carry out effective control and adjust the environmental parameter scheduling problem of electricity distribution room
Detailed Description
A temperature and humidity sensor distribution method of an environment automatic adjusting system of a transformer substation distribution room comprises the following steps: the method comprises the steps of establishing a three-dimensional geometric simulation model of a distribution room of the transformer substation by using Ansys, carrying out simulation analysis on a temperature field and a humidity field of the distribution room by using the Ansys, obtaining temperature field and humidity field distribution simulation graphs at different heights, and selecting temperature and humidity sensors for point distribution through the simulation graphs.
The method comprises the following specific steps:
1. collecting parameters required by modeling of a distribution room of a transformer substation, including model parameters of the distribution room of the transformer substation and the number n of foundation windows for ventilationdAnd parameters, the number of the ventilation fans nfAnd parameters, the number of switch cabinets in the distribution room, the position of the distribution room and the parameters.
The distribution room model parameters comprise length L, width W and height H;
the parameters of the foundation window for air exchange comprise the position of a wall plane where the foundation window for air exchange is located and the resistance coefficient of the foundation window for air exchange;
the parameters of the ventilator comprise the plane position of a wall body where the ventilator is located and the flow of the ventilator;
the system comprises a transformer substation distribution outdoor environment temperature parameter Tout and an outdoor relative humidity parameter Dout, wherein the transformer substation distribution outdoor environment temperature parameter Tout and the outdoor relative humidity parameter Dout are obtained;
the temperature parameter Twall of the power distribution room of the transformer substation, the indoor environment temperature parameter Tin and the indoor relative humidity parameter Din are measured;
the method comprises the following steps that (1) the maximum value Tmax of the environmental temperature and the maximum value Dmax of the relative humidity are required by the operating environment in a distribution room of the transformer substation;
wherein, the switch cabinet parameters of the distribution room comprise the heating power P of a single switch cabinetkAnd a switch cabinet porosity xi;
2. and (3) establishing a three-dimensional geometric simulation model of the distribution room of the transformer substation in Ansys by using the parameters of the distribution room, the foot windows for ventilation, the ventilation fan, the switch cabinet of the distribution room, the indoor and outdoor environments of the distribution room and the like in the step (1). Considering the performance and workload of a computer, neglecting the influence of other auxiliary equipment in the high-voltage distribution room on fluid flow, setting a heat source of a switch cabinet of the distribution room as a surface heat source, and simultaneously enabling the enclosure structures of the high-voltage distribution room to be uniform and consistent and have the same heat transfer performance; thereby obtaining a simplified three-dimensional geometric simulation model of the substation distribution room.
3. And determining a calculation domain of the flow field of the distribution chamber on the premise of maximally representing the fluid flow characteristics in the distribution chamber. The simulation model is dispersed in a calculation domain by adopting a hexahedral structural grid, automatic grid division is carried out on the local positions of a distribution room including a switch cabinet, a fan and a vent, and the number of grid units and the number of nodes after grid refinement are obtained by carrying out local encryption processing on the calculation domain.
4. And (3) setting boundary conditions and initial conditions of the simulation model by using parameters of the power distribution room, the foot margin window for ventilation, the ventilation fan, the power distribution room switch cabinet, the indoor and outdoor environment of the power distribution room and the like in the step (1). 5. And setting a solving strategy. Setting a calculation model as an RNG k-turbulence model, setting a solving method as a simple algorithm, setting solving precision as a second-order attack style, and setting iteration times N and termination conditions.
Wherein, the simulation termination condition is that the energy residual is less than 10-7Or inlet and outlet flow error less than 10-4。
6. And starting simulation until a simulation termination condition is reached, and acquiring temperature field and humidity field distribution simulation graphs at different heights.
7. The method for selecting the temperature and humidity sensors for point distribution through the simulation diagram comprises the following steps: by analyzing the temperature field and the humidity field distribution simulation diagrams at different heights, the temperature and humidity sensor is installed at the following optimal points:
are respectively at
Selecting 4 points with the highest temperature and 4 points with the lowest temperature as temperature sensor mounting points at the position H to acquire representative temperature data of temperature sensitive areas with different heights, wherein the height H is calculated from the ground and is respectively arranged at the positions H
And 4 points with the highest relative humidity and 4 points with the lowest relative humidity are selected at the H position to serve as installation points of the humidity sensor, so that the representative relative humidity data of the relative humidity sensitive areas with different heights can be obtained. The acquired temperature and relative humidity data are transmitted to an environment adjusting and controlling system of the transformer substation, and the environment adjusting and controlling system is used for temperature and humidity environment monitoring of a transformer substation distribution room and used as a power distribution room temperature and humidity environment adjusting and controlling device for controlling the start-stop condition.
Claims (2)
1. A temperature and humidity sensor distribution method of an environment automatic adjusting system of a transformer substation distribution room comprises the following steps: establishing a three-dimensional geometric simulation model of a distribution room of a transformer substation by using Ansys, carrying out simulation analysis on a temperature field and a humidity field of the distribution room by using the Ansys, obtaining temperature field and humidity field distribution simulation diagrams at different heights, and selecting temperature and humidity sensors for point distribution through the simulation diagrams;
the method for establishing the three-dimensional geometric simulation model of the transformer substation distribution room by using Ansys comprises the following steps of:
step 1, collecting parameters needed by modeling of a distribution room of a transformer substation, including model parameters of the distribution room of the transformer substation and the number n of foundation windows for ventilationdAnd parameters, the number of the ventilation fans nfAnd parameters, preparationThe number of electric room switch cabinets, the positions and parameters of the power distribution rooms; the distribution room model parameters comprise length L, width W and height H; the ventilation foundation window parameters comprise the wall plane position of the ventilation foundation window and the ventilation foundation window resistance coefficient; the parameters of the ventilator comprise the plane position of the wall body where the ventilator is located and the flow of the ventilator; a distribution outdoor environment temperature parameter Tout and an outdoor relative humidity parameter Dout of the transformer substation; the method comprises the following steps of (1) measuring a wall temperature parameter Twall, an indoor environment temperature parameter Tin and an indoor relative humidity parameter Din of a power distribution room of the transformer substation; the method comprises the following steps that (1) the maximum value Tmax of the environmental temperature and the maximum value Dmax of the relative humidity of the operating environment in a distribution room of the transformer substation are required; the parameters of the switch cabinet in the distribution room comprise the heating power P of a single switch cabinetkAnd a switch cabinet porosity xi;
step 2, establishing a three-dimensional geometric simulation model of the distribution room of the transformer substation in Ansys by using the parameters required for modeling of the distribution room of the transformer substation, which are acquired in the step 1;
step 3, simplifying the model; neglecting the influence of auxiliary equipment in the high-voltage distribution room on fluid flow, setting a heat source of a switch cabinet of the distribution room as a surface heat source, and setting the enclosure structure of the high-voltage distribution room as uniform and consistent heat transfer performance; thereby obtaining a simplified three-dimensional geometric simulation model of the substation distribution room;
the method for carrying out simulation analysis on the temperature field and the humidity field of the power distribution room by using the Ansys to obtain the temperature field and humidity field distribution simulation diagrams at different heights comprises the following steps:
step 4, determining a calculation domain of a flow field of the power distribution chamber on the premise of expressing the flow characteristic of fluid in the power distribution chamber to the maximum extent, dispersing the simulation model in the calculation domain by adopting a hexahedral structure grid, then automatically dividing the grid of the power distribution chamber at the local position comprising a switch cabinet, a fan and a vent, and carrying out local encryption processing on the calculation domain to obtain the grid unit number and the node number after grid refinement;
step 5, setting boundary conditions and initial conditions of the simulation model by using the power distribution room, the foot margin window for ventilation, the ventilation fan, the power distribution room switch cabinet and the indoor and outdoor environmental parameters of the power distribution room in the step 1;
step 6, setting a solving strategy and setting a calculation model as an RNG k-turbulence modelThe solving method is a simple algorithm, the solving precision is a second-order welcome style, and the iteration number N and the termination condition are set; the simulation termination condition is that the energy residual is less than 10-7Or inlet and outlet flow error less than 10-4；
And 7, starting simulation until a simulation termination condition is reached, and acquiring temperature field and humidity field distribution simulation graphs at different heights.
2. The temperature and humidity sensor arrangement method for the automatic environment adjustment system of the substation distribution room, according to claim 1, is characterized in that: the method for selecting the temperature and humidity sensors for point distribution through the simulation diagram comprises the following steps: selecting the temperature field and humidity field distribution simulation graphs with different heights respectively
Selecting 4 points with the highest temperature and 4 points with the lowest temperature as the mounting points of the temperature sensors at the H position to acquire representative temperature data of temperature sensitive areas with different heights, wherein the representative temperature data are respectively arranged at the positions
And 4 points with the highest relative humidity and 4 points with the lowest relative humidity are selected at the H position to serve as installation points of the humidity sensor, so that the representative relative humidity data of the relative humidity sensitive areas with different heights can be obtained.
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| CN110764470A (en) * | 2019-08-31 | 2020-02-07 | 华南理工大学 | 10kV power distribution room temperature and humidity sensor optimized point distribution method |
| CN110826201B (en) * | 2019-10-24 | 2023-11-03 | 深圳供电局有限公司 | Three-dimensional visualization platform for operation and maintenance management system of data center |
| CN112417674B (en) * | 2020-11-19 | 2024-03-19 | 广西电网有限责任公司电力科学研究院 | Method for simulating thermal faults of dynamic correction switch cabinet |
| CN112417675B (en) * | 2020-11-19 | 2024-03-19 | 广西电网有限责任公司电力科学研究院 | Thermal fault simulation precision correction method |
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| CN103995553B (en) * | 2014-06-14 | 2016-04-06 | 福建农林大学 | The points distributing method of a kind of ash tree flower mushroom room Temperature Humidity Sensor |
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