CN111653957A - Zone control method suitable for environment in transformer substation control cabinet with storage battery - Google Patents
Zone control method suitable for environment in transformer substation control cabinet with storage battery Download PDFInfo
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- CN111653957A CN111653957A CN202010471822.3A CN202010471822A CN111653957A CN 111653957 A CN111653957 A CN 111653957A CN 202010471822 A CN202010471822 A CN 202010471822A CN 111653957 A CN111653957 A CN 111653957A
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- temperature
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- control cabinet
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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
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- 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
-
- 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
Abstract
The invention relates to a zone control method suitable for the environment in a substation control cabinet with a storage battery. The method is used for establishing a partitioned remote control system of the environment in the substation modular control cabinet with the storage battery, and solves the problem of environment control of the substation modular control cabinet with the storage battery.
Description
Technical Field
The invention relates to a zone control method suitable for the environment in a substation control cabinet with a storage battery.
Background
The current intelligent control cabinet environmental control major mode has 3:
1. natural air cooling mode
The fan (axial flow fan or centrifugal fan) is adopted to realize convection of air inside and outside the cabinet, hot air inside the cabinet is discharged outside the cabinet, and cold air outside the cabinet is sucked into the cabinet to realize heat transfer inside the cabinet.
The advantages are that: (1) the fan has simple structure, small volume and convenient installation and maintenance; (2) the energy consumption is low; (3) the cost is very low;
the disadvantages are as follows: (1) when the ambient temperature is too high in summer, the heat dissipation effect is poor, and the burden of cooling the cabinet cannot be born for a long time; (2) the protection level is low, dust, moisture and corrosive gas enter the cabinet, dirt such as dust is easy to accumulate, components in the cabinet are polluted, and the heat island effect of the components is further intensified; (3) the fan can only dissipate heat and reduce temperature, and the ambient temperature is too low in winter, so that the cabinet cannot be heated and heated.
2. Heat dissipation method of heat exchanger
The heat exchanger device is used for effectively exchanging heat outside the cabinet by utilizing air outside the cabinet with the temperature lower than the temperature inside the cabinet through the heat exchange core, and transferring the heat inside the cabinet to the air outside the cabinet. When the heat exchanger works, the air outside the cabinet and the air inside the cabinet with different temperatures are driven by the fan to exchange heat through the partition plate made of metal materials, and the air flows at the two sides are completely separated by 100%.
The advantages are that: (1) the protection level is high, the possible pollution of humidity and dust to the inside of the cabinet is eliminated, and the functions of avoiding faults caused by heat, humidity, dust and other pollutants and the like are achieved. (2) The heat dissipation effect is better.
The disadvantages are as follows: (1) because the heat exchanger is essentially heat conduction, the temperature in the cabinet is always higher than the ambient temperature, and the ambient temperature is overhigh in summer; (2) the heat exchanger fan can only dissipate heat and reduce temperature, and the ambient temperature is too low in winter, so that the cabinet cannot be heated and heated.
3. Temperature control mode of air conditioner
The cabinet air conditioner has various installation modes such as wall hanging, half embedding, full embedding, top-mounting and the like, and can determine whether to refrigerate or heat according to the specific temperature condition in the cabinet.
The advantages are that: (1) the heat dissipation effect is good, and because cold air is directly sent to the vicinity of a heat source, hot spots can be prevented from occurring in the cabinet; (2) the protection level is high, and dust, moisture and corrosive gas can be prevented from entering the cabinet; (3) when the environmental temperature is too low in winter, the temperature can be raised by heating.
The disadvantages are as follows: the energy consumption is high.
The mainstream arrangement scheme of the existing intelligent substation is to place the interlayer equipment for protection, measurement and control and the like on the intelligent control cabinet at the corresponding interval. And because protection, observing and controlling, equipment such as switch, intelligent subassembly, battery require diverse to environment humiture, etc. from the intelligent control cabinet of taking the battery, when they put down the primary equipment field, the outside humiture environmental impact all is far more abominable than secondary equipment room. Especially, when the intelligent control cabinet is provided with a storage battery, the storage battery is self-ignited due to overheating and causes a fire. Therefore, the environmental control of the intelligent control cabinet with the storage battery is very important.
After the GIS prefabricated intelligent control cabinet secondary equipment is placed, the temperature control has the following problem due to inconsistent temperature requirements.
1. Heat source distribution is scattered: the secondary equipment for transferring the intelligent control cabinet is added with the traditional equipment in the intelligent control cabinet, so that the types of the equipment in the intelligent control cabinet are multiple, the heating condition of each type of equipment is different, the heat source distribution is scattered, the temperature control difficulty is high, and targeted cooling cannot be performed.
2. Start-up hysteresis of refrigeration equipment: because the temperature and humidity controller is only installed one and fixed point is laid, the temperature and humidity controller can be started when the ambient temperature does not reach the starting condition of the temperature and humidity controller. The heating conditions of all the devices are inconsistent, the temperature of a certain device with large heating value reaches a very high temperature, but the ambient temperature around the temperature and humidity probe does not reach the starting temperature of the temperature and humidity controller, and an air conditioner or other refrigerating devices cannot be started immediately, so that the heating device cannot be cooled in time.
The condition of this application to the equipment in the cabinet to the modular control cabinet of transformer substation from taking the battery sets up the subregion remote control system of transformer substation from the cabinet internal environment of taking battery intelligent control cabinet from the scheme of "equipment partition arrangement + diversified accuse temperature + single cabinet control + centralized control" in the cabinet from the modularized design theory, has solved the environmental control problem of the modular control cabinet of transformer substation from taking the battery.
Disclosure of Invention
The invention aims to provide a zone control method suitable for the environment in a substation control cabinet with a storage battery, which is based on a modular design concept and solves the environment control problem of the substation modular control cabinet with the storage battery by establishing a zone remote control system for the environment in the substation intelligent control cabinet with the storage battery.
In order to achieve the purpose, the technical scheme of the invention is as follows: a partition control method suitable for the environment in a substation control cabinet with a storage battery comprises the following steps:
step S1, arranging the equipment in the intelligent control cabinet in a partition mode: respectively arranging secondary equipment, traditional equipment and energy storage equipment in an intelligent control cabinet in an intelligent area, a traditional area and an energy storage area;
step S2, configuring different environment control devices aiming at the device materials and heating conditions of different devices in the traditional area, the intelligent area and the energy storage area:
temperature and humidity probes are uniformly distributed in the traditional area, and each traditional device adopts a heater for dehumidification and is not provided with a cooling device;
the intelligent area adopts a 'fixed-point cooling and dehumidifying' strategy, a temperature and humidity probe is configured for each secondary device, a semiconductor refrigerator is arranged for each secondary device, and directional cooling is carried out according to the heating condition of each device;
temperature and humidity probes are uniformly distributed in the energy storage area, and a high-power air conditioner is configured according to the characteristics of energy storage equipment to cool and dehumidify;
step S3, controlling the environment partition of the intelligent control cabinet: connect the humiture probe in tradition district, intelligent district, energy storage district with a temperature control module, simultaneously with heater, semiconductor cooler, high-power air conditioner, the outer switch of cabinet, energy storage equipment with temperature control module connects, and energy storage equipment is used for doing the power supply of temperature control module, temperature control module control the work of heater, semiconductor cooler, high-power air conditioner respectively according to the temperature condition that the humiture probe in tradition district, intelligent district, energy storage district detected, if the arbitrary temperature in tradition district, intelligent district, energy storage district is higher than the high temperature threshold value, then the outer switch of temperature control module control cabinet cuts off the outer power of cabinet.
In an embodiment of the invention, each intelligent control cabinet environment zone control system is accessed to a switch to construct a substation total station control cabinet environment control system.
In an embodiment of the present invention, the environmental control system of the substation total station control cabinet includes the following two control modes:
A. automatic mode
In the mode, a temperature and humidity starting value and a temperature and humidity returning value can be set, when the temperature and humidity measured by the temperature and humidity probe reaches the starting value, the refrigeration dehumidifier automatically starts to work, and when the temperature and humidity measured by the temperature and humidity probe reaches the returning value, the refrigeration dehumidifier automatically stops working; the refrigeration dehumidifier is a heater, a semiconductor refrigerator or a high-power air conditioner;
acquiring regional weather big data through connection of a main server of the power station total station control cabinet environment control system and a data center, and formulating a temperature control strategy of the power station total station control cabinet environment control system according to weather forecast data;
B. manual mode
In this mode, there are two modes of remote control and local control:
when the remote control is set, the start and stop of each refrigeration dehumidifier in each intelligent control cabinet can be controlled only at the background of the environment control system;
when the intelligent control cabinet is set to be controlled on site, the start and stop of each refrigeration dehumidifier in each intelligent control cabinet can be controlled only by the intelligent control cabinet.
In an embodiment of the present invention, the method further includes an intelligent cabinet fire determination process: the detection controllers are uniformly distributed in each partition of the intelligent control cabinet and are integrated with the smoke-sensing, temperature-sensing and gas sensors; the intelligent fire detection is carried out by a detection controller by means of fixed threshold, multi-sensor fusion and sensor trend judgment.
In an embodiment of the present invention, the intelligent fire detection method by using the sensor trend determination means includes:
judging the trend according to the change speed of the detection value detected by the detection controller, and sending an alarm signal to remind operation and maintenance personnel to pay attention even if the detection value does not exceed the alarm threshold value when the gradient of data rising is continuously increased and exceeds a preset allowable value; specifically, the method comprises the following steps:
differentiating the detection values into a plurality
Prompt detection value
、
、.......、
When is coming into contact with
When the alarm signal is sent out,
is a preset allowable value.
Compared with the prior art, the invention has the following beneficial effects: the method provided by the invention is based on a modular design concept, and solves the environmental control problem of the modular control cabinet of the transformer substation with the storage battery by establishing a partitioned remote control system of the environment in the intelligent control cabinet of the transformer substation with the storage battery.
Drawings
Fig. 1 is a schematic diagram of the arrangement of each device partition in the intelligent control cabinet.
FIG. 2 is a schematic diagram of a single cabinet environmental control system according to the present invention.
Fig. 3 is a schematic diagram of an environment control system of a total station control cabinet according to the present invention.
Detailed Description
The technical scheme of the invention is specifically explained below with reference to the accompanying drawings.
The invention provides a partition control method suitable for the environment in a transformer substation control cabinet with a storage battery, which comprises the following steps:
step S1, arranging the equipment in the intelligent control cabinet in a partition mode: respectively arranging secondary equipment, traditional equipment and energy storage equipment in an intelligent control cabinet in an intelligent area, a traditional area and an energy storage area;
step S2, configuring different environment control devices aiming at the device materials and heating conditions of different devices in the traditional area, the intelligent area and the energy storage area:
temperature and humidity probes are uniformly distributed in the traditional area, and each traditional device adopts a heater for dehumidification and is not provided with a cooling device;
the intelligent area adopts a 'fixed-point cooling and dehumidifying' strategy, a temperature and humidity probe is configured for each secondary device, a semiconductor refrigerator is arranged for each secondary device, and directional cooling is carried out according to the heating condition of each device;
temperature and humidity probes are uniformly distributed in the energy storage area, and a high-power air conditioner is configured according to the characteristics of energy storage equipment to cool and dehumidify;
step S3, controlling the environment partition of the intelligent control cabinet: connect the humiture probe in tradition district, intelligent district, energy storage district with a temperature control module, simultaneously with heater, semiconductor cooler, high-power air conditioner, the outer switch of cabinet, energy storage equipment with temperature control module connects, and energy storage equipment is used for doing the power supply of temperature control module, temperature control module control the work of heater, semiconductor cooler, high-power air conditioner respectively according to the temperature condition that the humiture probe in tradition district, intelligent district, energy storage district detected, if the arbitrary temperature in tradition district, intelligent district, energy storage district is higher than the high temperature threshold value, then the outer switch of temperature control module control cabinet cuts off the outer power of cabinet.
And connecting each intelligent control cabinet environment zone control system into the switch to construct a substation total station control cabinet environment control system.
The following is a specific implementation of the present invention.
The invention relates to a partition control method suitable for the environment in a transformer substation control cabinet with a storage battery, which is realized as follows:
1. the arrangement mode of secondary equipment in the intelligent control cabinet (as shown in figure 1).
The parallel direct-current storage battery and the super capacitor are used as a modular control cabinet of the transformer substation, and equipment in the cabinet comprises protection, measurement and control, a switch, an intelligent assembly, a storage battery and the like. Various devices have different requirements on environment temperature and humidity and the like, and have different requirements on temperature detection.
Adopt the strategy of "the subregion is concentrated to the heat source", secondary equipment to transferring prefabricated formula intelligent control cabinet is that the electron device receives the influence of generating heat easily, and the legacy equipment of prefabricated formula intelligent control cabinet is difficult to receive the influence of generating heat. Therefore, divide prefabricated formula intelligent control cabinet into traditional district, intelligent district, energy storage district.
And secondary equipment such as protection, measurement and control, a switch, an intelligent component and the like are intensively arranged in an intelligent area.
Conventional relays, status display panels, pressure plates, and the like are disposed in the conventional area.
And the storage battery, the super capacitor and other equipment are arranged in the energy storage area.
2. Environmental control equipment in the intelligent control cabinet is diversified.
Different environment control devices are configured aiming at the device materials and the heating conditions of different devices in a traditional area, an intelligent area and an energy storage area.
(1) The humiture probes are evenly distributed in the traditional area. The equipment adopts a common heater for dehumidification and is not provided with cooling equipment.
(2) The intelligent area adopts a 'fixed-point cooling and dehumidifying' strategy, and a temperature and humidity probe is configured for each secondary device. By utilizing the characteristics of simple structure, small volume, rapid refrigeration time and the like of the semiconductor refrigerators, one semiconductor refrigerator is arranged in each equipment, and the oriented cooling is carried out according to the heating condition of each equipment.
(3) And the energy storage area is provided with a professional high-power air conditioner for cooling and dehumidifying according to the characteristics of the storage battery.
3. Control mode
(1) Single cabinet environment control system (as shown in figure 2)
A. Zoned temperature control
And a temperature and humidity probe is configured for each secondary device in the intelligent area.
B. Over-temperature self-protection
And the temperature of any detection area is higher than the maximum allowable value, so that the power supply outside the cabinet is cut off.
(2) Total station control cabinet environment control system (as shown in figure 3)
And the single-cabinet environment control system is accessed into the switch, and then the switch is accessed into the total-station control cabinet environment control system.
The structure of the whole set of control system is shown in fig. 3, and the following two control modes are provided:
A. automatic mode
In this mode, a temperature and humidity start value and a return value can be set. When the temperature and humidity measured by the sensor reaches a starting value, the refrigeration dehumidifier automatically starts to work. When the temperature and humidity measured by the sensor reaches a return value, the refrigeration dehumidifier automatically stops working. The whole process does not need manual intervention.
And obtaining regional weather big data through the connection of the main server of the environment control system and the data center, and formulating a temperature control strategy of the total-station intelligent control cabinet according to weather forecast data.
B. Manual mode
In this mode, there are two modes of remote control and local control.
When the intelligent control cabinet is set to be in remote control, the start and stop of each refrigeration dehumidifier in each intelligent control cabinet can be controlled only in the background of the environment control system (generally set in a centralized control building or a secondary equipment room).
When the intelligent control cabinet is set to be controlled on site, the start and stop of each refrigeration dehumidifier in each intelligent control cabinet can be controlled only by the intelligent control cabinet.
4. Intelligent fire judgment for cabinet body
Detection controllers (integrating smoke, temperature and gas sensors) are uniformly arranged in each subarea of the cabinet body.
The temperature control system integrates the intelligent fire judgment function and carries out intelligent fire detection through the detection controller. And various means such as fixed threshold, multi-sensor fusion, sensor trend judgment and the like are adopted for judgment. When the high-sensitivity gas sensor detects that the concentration of the thermal runaway gas is abnormal or the smoke sensor detects that the visible smoke or the multi-sensor (gas, smoke and temperature) composite judgment is abnormal, early warning prompt can be carried out, and on the premise of early warning, when the temperature sensor detects that the temperature characteristic value is abnormal and has an obvious rising trend, fire early warning can be carried out, and an external power supply is cut off.
In this embodiment, the intelligent fire detection by means of sensor trend determination is as follows:
judging the trend according to the change speed of the detection value detected by the detection controller, and sending an alarm signal to remind operation and maintenance personnel to pay attention even if the detection value does not exceed the alarm threshold value when the gradient of data rising is continuously increased and exceeds a preset allowable value; specifically, the method comprises the following steps:
differentiating the detection values into a plurality
Prompt detection value
、
、.......、
When is coming into contact with
When the alarm signal is sent out,
is a preset allowable value.
The above are preferred embodiments of the present invention, and all changes made according to the technical scheme of the present invention that produce functional effects do not exceed the scope of the technical scheme of the present invention belong to the protection scope of the present invention.
Claims (5)
1. A partition control method suitable for the environment in a substation control cabinet with a storage battery is characterized by comprising the following steps:
step S1, arranging the equipment in the intelligent control cabinet in a partition mode: respectively arranging secondary equipment, traditional equipment and energy storage equipment in an intelligent control cabinet in an intelligent area, a traditional area and an energy storage area;
step S2, configuring different environment control devices aiming at the device materials and heating conditions of different devices in the traditional area, the intelligent area and the energy storage area:
temperature and humidity probes are uniformly distributed in the traditional area, and each traditional device adopts a heater for dehumidification and is not provided with a cooling device;
the intelligent area adopts a 'fixed-point cooling and dehumidifying' strategy, a temperature and humidity probe is configured for each secondary device, a semiconductor refrigerator is arranged for each secondary device, and directional cooling is carried out according to the heating condition of each device;
temperature and humidity probes are uniformly distributed in the energy storage area, and a high-power air conditioner is configured according to the characteristics of energy storage equipment to cool and dehumidify;
step S3, controlling the environment partition of the intelligent control cabinet: connect the humiture probe in tradition district, intelligent district, energy storage district with a temperature control module, simultaneously with heater, semiconductor cooler, high-power air conditioner, the outer switch of cabinet, energy storage equipment with temperature control module connects, and energy storage equipment is used for doing the power supply of temperature control module, temperature control module control the work of heater, semiconductor cooler, high-power air conditioner respectively according to the temperature condition that the humiture probe in tradition district, intelligent district, energy storage district detected, if the arbitrary temperature in tradition district, intelligent district, energy storage district is higher than the high temperature threshold value, then the outer switch of temperature control module control cabinet cuts off the outer power of cabinet.
2. The method of claim 1, wherein each intelligent control cabinet environmental zone control system access switch is configured to construct a substation total station control cabinet environmental control system.
3. The zonal control method for the environment inside the substation control cabinet with the battery as claimed in claim 2, wherein the substation total station control cabinet environment control system comprises the following two control modes:
A. automatic mode
In the mode, a temperature and humidity starting value and a temperature and humidity returning value can be set, when the temperature and humidity measured by the temperature and humidity probe reaches the starting value, the refrigeration dehumidifier automatically starts to work, and when the temperature and humidity measured by the temperature and humidity probe reaches the returning value, the refrigeration dehumidifier automatically stops working; the refrigeration dehumidifier is a heater, a semiconductor refrigerator or a high-power air conditioner;
acquiring regional weather big data through connection of a main server of the power station total station control cabinet environment control system and a data center, and formulating a temperature control strategy of the power station total station control cabinet environment control system according to weather forecast data;
B. manual mode
In this mode, there are two modes of remote control and local control:
when the remote control is set, the start and stop of each refrigeration dehumidifier in each intelligent control cabinet can be controlled only at the background of the environment control system;
when the intelligent control cabinet is set to be controlled on site, the start and stop of each refrigeration dehumidifier in each intelligent control cabinet can be controlled only by the intelligent control cabinet.
4. The zone control method suitable for the environment in the substation control cabinet with the storage battery of any one of claims 1 to 3, further comprising a cabinet body fire intelligent judgment process: the detection controllers are uniformly distributed in each partition of the intelligent control cabinet and are integrated with the smoke-sensing, temperature-sensing and gas sensors; the intelligent fire detection is carried out by a detection controller by means of fixed threshold, multi-sensor fusion and sensor trend judgment.
5. The zone control method suitable for the environment in the substation control cabinet with the storage battery as claimed in claim 4, wherein the intelligent fire detection by means of sensor trend judgment is as follows:
judging the trend according to the change speed of the detection value detected by the detection controller, and sending an alarm signal to remind operation and maintenance personnel to pay attention even if the detection value does not exceed the alarm threshold value when the gradient of data rising is continuously increased and exceeds a preset allowable value; specifically, the method comprises the following steps:
differentiating the detection values into a plurality
Prompt detection value
、
、.......、
When is coming into contact with
When the alarm signal is sent out,
is a preset allowable value.
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| CN202010471822.3A CN111653957B (en) | 2020-05-29 | 2020-05-29 | Zone control method suitable for environment in transformer substation control cabinet with storage battery |
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| CN202010471822.3A CN111653957B (en) | 2020-05-29 | 2020-05-29 | Zone control method suitable for environment in transformer substation control cabinet with storage battery |
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| CN111653957B CN111653957B (en) | 2022-03-08 |
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Cited By (2)
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| CN112701674A (en) * | 2021-01-22 | 2021-04-23 | 国网福建省电力有限公司 | Novel transformer substation direct current system and reliable power supply method |
| CN115145338A (en) * | 2022-07-29 | 2022-10-04 | 北京无线电测量研究所 | Temperature and humidity control device and control method |
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| CN115145338A (en) * | 2022-07-29 | 2022-10-04 | 北京无线电测量研究所 | Temperature and humidity control device and control method |
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| Publication number | Publication date |
|---|---|
| CN111653957B (en) | 2022-03-08 |
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