CN103616909B - Method and device for controlling water cooled converter power cabinet and water cooled converter adopting same - Google Patents
Method and device for controlling water cooled converter power cabinet and water cooled converter adopting same Download PDFInfo
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- CN103616909B CN103616909B CN201310632050.7A CN201310632050A CN103616909B CN 103616909 B CN103616909 B CN 103616909B CN 201310632050 A CN201310632050 A CN 201310632050A CN 103616909 B CN103616909 B CN 103616909B
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Abstract
The invention discloses a method and device for controlling a water cooled converter power cabinet and a water cooled converter adopting the method and device. A heat exchanger of the water cooled converter is indirectly controlled to be started and stopped through the master control system of a wind power system, and the difference value between the temperature of the environment inside the power cabinet and the water output temperature of the water cooled converter is controlled below a preset temperature difference corresponding to current humidity. When circulating water temperature is low, the heat exchanger is not started, and therefore a condensation phenomenon caused by the too low circulating water temperature is avoided. When the circulating water temperature is too high, the heat exchanger is indirectly started through the master control system, part of heat of circulating water is discharged out, the temperature of the circulating water is reduced, and therefore cooling efficiency is guaranteed. Therefore, on the premise that the control system of a wind turbine generator does not need to be improved and a water cooling system does not need to be provided with a heating device, dehumidification and condensation preventing control over the power cabinet is achieved, and control cost is greatly lowered.
Description
Technical field
The application is related to current transformer control technology field, more particularly, to a kind of water-cooled current transformer power cabinet control method, dress
Put and apply its water-cooled current transformer.
Background technology
At present, wind energy turbine set extensive development, covering area includes sea, applies the high wet zones such as beach；And because moist and moist
The condensation causing, brings massive losses to the electrical system of wind power generating set, therefore, it is especially desirable to paying attention to its dehumidifying and preventing
Condensation controls, the particularly dehumidifying to the critical electrical part current transformer of wind power generating set and anti-condensation control.
For the Wind turbines using water-cooled current transformer, its water-cooling system includes water-cool control cabinet and heat exchanger, is used for
The heat that quick exclusion recirculated water absorbs；This water-cooled current transformer includes power cabinet, switch board, grid-connection cabinet etc.；Described water-cooling system
It is independently controlled by respective switch board with water-cooled current transformer, and to water-cooling system and be somebody's turn to do by the master control system of Wind turbines
The control system of water-cooled current transformer carries out centralized Control.
For realizing to the dehumidifying of water-cooled current transformer and anti-condensation control, prior art according to the humidity in water-cooled current transformer,
Control instruction is directly sent to water-cooling system by the control system of water-cooled current transformer, realizes the computer heating control to recirculated water.Cause
This, apply above-mentioned control method it is necessary first to improve to the control system of Wind turbines, make water-cooled current transformer direct
Control water-cooling system.Further, since most water-cooling systems do not possess the function to circulating water heating, therefore, apply above-mentioned control
Method, also needs to arrange heater for water-cooling system.Analyzed from above, prior art realizes dehumidifying and anti-condensation control,
Need to carry out larger improvement to Wind turbines, relatively costly.
Content of the invention
In view of this, the application purpose is to provide a kind of water-cooled current transformer power cabinet control method, device and applies it
Water-cooled current transformer, to solve the problems, such as that existing control mode need to carry out larger improvement, high cost to Wind turbines.
For achieving the above object, the following technical scheme of the application offer:
A kind of water-cooled current transformer power cabinet control method, comprising:
The leaving water temperature of ambient temperature and described water-cooled current transformer in the real-time actual humidity value obtaining in power cabinet, cabinet；
Under described power cabinet run with load state, if described actual humidity value is less than default humidity value, according to described
In cabinet, ambient temperature and leaving water temperature generate the first control instruction of the heat exchanger start and stop controlling described water-cooling system, and by institute
State the first control instruction to send to the master control system of Wind turbines, so that the difference of ambient temperature and leaving water temperature is little in described cabinet
In the first fiducial temperature；
Under described power cabinet run with load state, if described actual humidity value is not less than default humidity value, to power
Cabinet carries out heating and dehumidification, until described actual humidity value is less than described default humidity value, and according to ambient temperature in described cabinet and
Leaving water temperature generates the second control instruction of the heat exchanger start and stop controlling described water-cooling system, and by described second control instruction
Send to the master control system of Wind turbines, so that the difference of ambient temperature and leaving water temperature is less than the second default temperature in described cabinet
Difference；
Wherein, described first fiducial temperature is more than the second fiducial temperature.
Preferably, the described heat exchange generating the described water-cooling system of control according to ambient temperature in described cabinet and leaving water temperature
First control instruction of device start and stop, comprising:
Determine the first startup water temperature tw11With the first shutdown water temperature tw12；
When described leaving water temperature is more than the first startup water temperature tw11When, generate the first startup making described heat exchanger start
Instruction；
When described leaving water temperature is less than the first shutdown water temperature tw12When, generate the first shutdown making described heat exchanger shut down
Instruction；Wherein,
Described first startup water temperature tw11Computing formula be tw11=ta-△t1/n2；
Described first shutdown water temperature tw12Computing formula be tw12=ta-△t1/n1；
Ta is ambient temperature in described cabinet, △ t1For described first fiducial temperature, n1Preset negative sense return difference coefficient for first,
n2Preset negative sense return difference coefficient for second, and 1≤n1＜ n2.
Preferably, the described heat exchange generating the described water-cooling system of control according to ambient temperature in described cabinet and leaving water temperature
Second control instruction of device start and stop, comprising:
Determine the second startup water temperature tw21With the second shutdown water temperature tw22；
When described leaving water temperature is more than the second startup water temperature tw21When, generate the second startup making described heat exchanger start
Instruction；
When described leaving water temperature is less than the second shutdown water temperature tw22When, generate the second shutdown making described heat exchanger shut down
Instruction；Wherein,
Described second startup water temperature tw21Computing formula be tw21=ta-△t2/n4；
Described second shutdown water temperature tw22Computing formula be tw22=ta-△t2/n3；
Ta is ambient temperature in described cabinet, △ t2For described second fiducial temperature, n3Preset negative sense return difference coefficient for the 3rd,
n4Preset negative sense return difference coefficient for the 4th, and 1≤n3＜ n4.
Preferably, described water-cooled current transformer power cabinet control method also includes:
Under electric no-load condition on described power cabinet, if described actual humidity value is less than default humidity value, control institute
State power cabinet run with load, otherwise heating and dehumidification is carried out to power cabinet, until described actual humidity value is less than described default humidity
Value.
Preferably, described water-cooled current transformer power cabinet control method also includes:
Start shooting under non-power-up state in described power cabinet, if described actual humidity value is less than default humidity value, control institute
State electricity on power cabinet, otherwise heating and dehumidification is carried out to power cabinet, until described actual humidity value is less than described default humidity value.
Preferably, described water-cooled current transformer power cabinet control method also includes:
It is under any state in described power cabinet, when in described cabinet, ambient temperature is more than default ring temperature protection value, and/
Or, when described leaving water temperature is more than default water temperature protection value, controlling described water-cooled current transformer to shut down.
Preferably, described heating and dehumidification is carried out to power cabinet, comprising: start the heater in described power cabinet.
Preferably, when in described cabinet, ambient temperature is more than default ring temperature protection value, described water-cooled current transformer power cabinet control
Method processed also includes: closes described heater.
A kind of water-cooled current transformer power cabinet control device, comprising:
Humidity sensor, is arranged in described power cabinet, for detecting the actual humidity value in described power cabinet；
Ring temperature temperature detector, is arranged in described power cabinet, for detecting ambient temperature in the cabinet in described power cabinet；
Water temperature temperature detector, is arranged at the outlet of described water-cooled current transformer, for detecting the leaving water temperature of described outlet；
Power cabinet controller, for executing the water-cooled current transformer power cabinet control method described in any of the above item.
A kind of water-cooled current transformer, including power cabinet, switch board and grid-connection cabinet, described power cabinet includes above-mentioned water-cooled current transformer
Power cabinet control device.
It can be seen from above-mentioned technical scheme that, the application works under low humidity pattern in the power cabinet of water-cooled current transformer
When, by the heat exchanger start and stop of the master control system indirect control water-cooled current transformer of wind power system, make environment in the cabinet of power cabinet
Difference between the leaving water temperature of temperature and water-cooled current transformer controls below the first fiducial temperature；Under high wet model, a side
In the face of power cabinet carries out heating and dehumidification, on the other hand yet by the heat of the master control system indirect control water-cooled current transformer of wind power system
Exchanger start and stop, make the difference between the leaving water temperature of ambient temperature and water-cooled current transformer in the cabinet of power cabinet control pre- second
If below the temperature difference；The heat controlling the Wind turbines of recirculated water absorption different from prior art is discharged as early as possible, the embodiment of the present application
When circulating water temperature is relatively low, do not start heat exchanger, thus avoiding the dew condensation phenomenon causing because circulating water temperature is too low；?
When circulating water temperature is too high, heat exchanger is indirectly started by master control system, discharge the partial heat of recirculated water so as at a temperature of
Fall, thus ensure that cooling effectiveness.Therefore, the application is being not required to the control system of Wind turbines is improved, and is not required to as water
It is achieved that controlling to power cabinet dehumidifying condensation proof on the premise of cooling system setting heater, greatly reduce control cost, solution
Determine problem of the prior art.
Brief description
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of application, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
The water-cooled current transformer power cabinet control method flow chart that Fig. 1 provides for the embodiment of the present application one；
The water-cooled current transformer power cabinet control method flow chart that Fig. 2 provides for the embodiment of the present application two；
The water-cooled current transformer power cabinet control method flow chart that Fig. 3 provides for the embodiment of the present application three；
The structured flowchart of the water-cooled current transformer power cabinet control device that Fig. 4 provides for the embodiment of the present application four；
Water-cooled current transformer and the structure chart applying its Wind turbines that Fig. 5 provides for the embodiment of the present application five.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation describes it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on
Embodiment in the application, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of the application protection.
The embodiment of the present application discloses a kind of water-cooled current transformer power cabinet control method, device and the water-cooled unsteady flow applying it
Device, to solve the problems, such as that existing control mode need to carry out larger improvement, high cost to Wind turbines.
The water-cooled current transformer power cabinet control method providing with reference to Fig. 1, the embodiment of the present application one, comprises the steps:
In s1, actual humidity value rh obtaining in real time in power cabinet, cabinet, ambient temperature ta and described water-cooled current transformer goes out
Coolant-temperature gage tw；
S2, under described power cabinet run with load state, judge described actual humidity value rh whether less than default humidity value
rh0, if it is, execution step s3, otherwise execution step s4；
S3, generate the heat exchanger start and stop controlling described water-cooling system according to ambient temperature in described cabinet and leaving water temperature
First control instruction, and described first control instruction is sent to the master control system of Wind turbines, so that environment temperature in described cabinet
The difference of degree and leaving water temperature is less than the first fiducial temperature △ t1；
S4, heating and dehumidification is carried out to power cabinet, until described actual humidity value is less than described default humidity value, and according to institute
State the second control instruction of the heat exchanger start and stop of ambient temperature and the leaving water temperature generation described water-cooling system of control in cabinet, and will
Described second control instruction sends to the master control system of Wind turbines so that in described cabinet ambient temperature and leaving water temperature difference
Less than the second fiducial temperature △ t2.
Wherein, the first fiducial temperature △ t1More than the second fiducial temperature △ t2；If rh is ＜ rh0, illustrate that water-cooled current transformer works
In low humidity pattern, the difference that can allow ambient temperature and leaving water temperature in cabinet is in (i.e. the first temperature difference band [0, △ t in a big way1])
Interior floating；If rh is ＞ rh0, illustrate that water-cooled current transformer works in high wet model, the difference of ambient temperature and leaving water temperature in described cabinet
Value domain of walker (i.e. the second temperature difference band [0, △ t2]) relatively small.
Above-mentioned corresponding control instruction is generated according to ambient temperature in described cabinet and leaving water temperature, specifically can be using as lower section
Method, when the difference of ambient temperature and leaving water temperature in cabinet is less than the minima of fiducial temperature threshold value, that is, leaving water temperature value is higher (right
In the water-cooling system of no heating function, its circulating water temperature is permanent to be less than ambient temperature, i.e. ta ＞ tw) when, generate enabled instruction simultaneously
Send to the master control system of Wind turbines, master control system starts according to the heat exchanger that this enabled instruction controls water-cooling system, plus
The rate of heat exchange of fast recirculated water and external environment, thus reduce circulating water temperature it is ensured that the cooling effectiveness of water-cooling system；Work as cabinet
The difference of interior ambient temperature and leaving water temperature is more than the maximum of fiducial temperature threshold value, when that is, leaving water temperature value is relatively low, easily occurs
Dew condensation phenomenon, therefore generate halt instruction and send to master control system, make master control system control heat exchanger to shut down, suppress recirculated water
With the heat exchange of external environment, circulating water temperature is made to gradually rise, thus avoiding dew condensation phenomenon.
Due to being more easy to dew condensation phenomenon under high wet model, therefore different humidity pattern can be directed to, warm according to presetting accordingly
Difference (the first fiducial temperature △ t1Or the second fiducial temperature △ t2) the different temperature difference threshold of setting, that is, under different humidity pattern, heat is handed over
The temperature difference critical point that parallel operation starts is different, and the temperature difference critical point of shutdown is also different.(i.e. environment in described cabinet can be required according to controlling
The difference of temperature and leaving water temperature is less than the first fiducial temperature △ t1) the different temperature difference threshold of setting.
From said method step, the embodiment of the present application works under low humidity pattern in the power cabinet of water-cooled current transformer
When, by the heat exchanger start and stop of the master control system indirect control water-cooled current transformer of wind power system, make environment in the cabinet of power cabinet
Difference between the leaving water temperature of temperature and water-cooled current transformer controls below the first fiducial temperature；Under high wet model, a side
In the face of power cabinet carries out heating and dehumidification, on the other hand yet by the heat of the master control system indirect control water-cooled current transformer of wind power system
Exchanger start and stop, make the difference between the leaving water temperature of ambient temperature and water-cooled current transformer in the cabinet of power cabinet control pre- second
If below the temperature difference；The heat controlling the Wind turbines of recirculated water absorption different from prior art is discharged as early as possible, the embodiment of the present application
When circulating water temperature is relatively low, do not start heat exchanger, thus avoiding the dew condensation phenomenon causing because circulating water temperature is too low；?
When circulating water temperature is too high, heat exchanger is indirectly started by master control system, discharge the partial heat of recirculated water so as at a temperature of
Fall, thus ensure that cooling effectiveness.Therefore, the embodiment of the present application is being not required to the control system of Wind turbines is improved, no
It is achieved that controlling to power cabinet dehumidifying condensation proof, control need to be greatly reduced on the premise of water-cooling system setting heater
Cost, solves problem of the prior art.
For above-mentioned, corresponding control instruction, the embodiment of the present application are generated according to ambient temperature in described cabinet and leaving water temperature
Two provide a kind of preferred implementation.As shown in Fig. 2 the water-cooled current transformer power cabinet controlling party that described embodiment two provides
Method, comprises the steps:
In s1, actual humidity value rh obtaining in real time in power cabinet, cabinet, ambient temperature ta and described water-cooled current transformer goes out
Coolant-temperature gage tw；
S2, under described power cabinet run with load state, judge described actual humidity value rh whether less than default humidity value
rh0, if it is, execution step s3, otherwise execution step s5；
S3, determine the first startup water temperature tw11With the first shutdown water temperature tw12；
Specifically, described first startup water temperature tw11Computing formula be tw11=ta-△t1/n2；Described first shutdown water temperature
tw12Computing formula be tw12=ta-△t1/n1；Ta is ambient temperature in described cabinet, △ t1For described first fiducial temperature, n1For
First default negative sense return difference coefficient, n2Preset negative sense return difference coefficient for second, and 1≤n1＜ n2.
Corresponding to foregoing embodiments one, that is, the temperature difference threshold under low humidity pattern is [△ t1/n2, △ t1/n1].
S4, when described leaving water temperature tw be more than first startup water temperature tw11When, generate and make the first of described heat exchanger startup
Enabled instruction, when described leaving water temperature tw is less than the first shutdown water temperature tw12When, generate and make the first of described heat exchanger shutdown to stop
Machine instructs, and described first enabled instruction or the first halt instruction are sent to master control system；
After master control system receives above-mentioned first enabled instruction or the first halt instruction, you can control the heat friendship of water-cooling system
Parallel operation starts or shuts down, hereby it is achieved that when described leaving water temperature is more than the first startup water temperature tw11When, heat exchanger starts, when
Described leaving water temperature is less than the first shutdown water temperature tw12When, heat exchanger is shut down.
S5, heating and dehumidification is carried out to power cabinet, and determine the second startup water temperature tw21With the second shutdown water temperature tw22；
Specifically, described second startup water temperature tw21Computing formula be tw21=ta-△t2/n4；Described second shutdown water temperature
tw22Computing formula be tw22=ta-△t2/n3；Ta is ambient temperature in described cabinet, △ t2For described second fiducial temperature, n3For
3rd default negative sense return difference coefficient, n4Preset negative sense return difference coefficient for the 4th, and 1≤n3＜ n4.
S6, when described leaving water temperature tw be more than second startup water temperature tw21When, generate and make the second of described heat exchanger startup
Enabled instruction, when described leaving water temperature tw is less than the second shutdown water temperature tw22When, generate and make the second of described heat exchanger shutdown to stop
Machine instructs, and described second enabled instruction or the second halt instruction are sent to master control system.
After master control system receives above-mentioned second enabled instruction or the second halt instruction, you can control the heat friendship of water-cooling system
Parallel operation starts or shuts down, hereby it is achieved that when described leaving water temperature is more than the second startup water temperature tw21When, heat exchanger starts, when
Described leaving water temperature is less than the second shutdown water temperature tw22When, heat exchanger is shut down.
Under power cabinet run with load state, by circulating execution step s2～s6, control start and stop, the realization of heat exchanger
Regulation to circulating water temperature it is ensured that the in-cabinet temperature of power cabinet and the difference of circulating water temperature are in preset range, thus
Achieve dehumidifying condensation proof control.
In view of in addition to run with load state, the state of power cabinet also includes start shooting non-power-up state and upper electric non-loaded shape
State, controls for realizing the dehumidifying condensation proof under power cabinet free position, the embodiment of the present application three provides another water-cooled unsteady flow
Device power cabinet control method, as shown in figure 3, the method comprising the steps of:
In s1, actual humidity value rh obtaining in real time in power cabinet, cabinet, ambient temperature ta and described water-cooled current transformer goes out
Coolant-temperature gage tw；
S2, start shooting under non-power-up state in described power cabinet, judge described actual humidity value rh whether less than presetting humidity
Value rh0, if it is, controlling electricity on described power cabinet, and execution step s4, otherwise execution step s3；
S3, heating and dehumidification is carried out to power cabinet, and return to step s2；
Under s4, electric no-load condition on described power cabinet, judge described actual humidity value rh whether less than default humidity
Value rh0, if it is, controlling described power cabinet run with load, and execution step s6, otherwise execution step s5；
S5, heating and dehumidification is carried out to power cabinet, and return to step s4；
S6, under described power cabinet run with load state, judge described actual humidity value rh whether less than default humidity value
rh0, if it is, execution step s7, otherwise execution step s9；
S7, determine the first startup water temperature tw11With the first shutdown water temperature tw12；
S8, when described leaving water temperature tw be more than first startup water temperature tw11When, generate and make the first of described heat exchanger startup
Enabled instruction, when described leaving water temperature tw is less than the first shutdown water temperature tw12When, generate and make the first of described heat exchanger shutdown to stop
Machine instructs, and described first enabled instruction or the first halt instruction are sent to master control system, and return to step s6；
S9, heating and dehumidification is carried out to power cabinet, and determine the second startup water temperature tw21With the second shutdown water temperature tw22；
S10, when described leaving water temperature tw be more than second startup water temperature tw21When, generate make that described heat exchanger starts the
Two enabled instructions, when described leaving water temperature tw is less than the second shutdown water temperature tw22When, generate and make the second of described heat exchanger shutdown
Halt instruction, and described second enabled instruction or the second halt instruction are sent to master control system, and return to step s6.
From said method step, the embodiment of the present application all dehumidifies to the different conditions of water-cooled current transformer power cabinet
Control, and for the power cabinet under run with load state, generated according to ambient temperature in cabinet and leaving water temperature and control heat exchanger
The control instruction of start and stop, and then this control instruction is indirectly executed by master control system, realize the on off control to heat exchanger,
It is achieved that control to circulating water temperature on the premise of being not required to and increasing outward circulating water heating device, reach anti-condensation mesh
's；Separately, the enforcement of above-mentioned control method is not required to the control structure of Wind turbines is modified, and cost is relatively low, solves existing
Technical problem.
For protecting water-cooled current transformer further, the application any of the above-described embodiment methods described also comprises the steps: to work as
In described cabinet, ambient temperature ta is more than default ring temperature protection value tp1, and/or, described leaving water temperature tw is more than default water temperature protection
Value tp2When, control described water-cooled current transformer to shut down.
Preferably, described in the embodiment of the present application, heating and dehumidification is carried out to power cabinet, concrete grammar can be: in power cabinet
Interior setting, with heater, realizes the heating and dehumidification to power cabinet by starting this heater；When the actual humidity value in cabinet
When being down to below default humidity value, close this heater.
For the heating and dehumidification realized above by the heater in cabinet to power cabinet, when ambient temperature ta in judgement cabinet
More than default ring temperature protection value tp1When, except controlling water-cooled current transformer to shut down, also to ensure that the closing of this heater (such as can be straight
Connect the power supply of cut-out heater), to prevent ambient temperature in cabinet from continuing to raise.
Corresponding to said method embodiment, the embodiment of the present application four additionally provides a kind of water-cooled current transformer power cabinet and controls dress
Put；As shown in figure 4, this device at least includes humidity sensor 310, ring temperature temperature detector 320, water temperature temperature detector 330 and power cabinet
Controller 340.
Specifically, humidity sensor 310, are arranged in described power cabinet, wet for detecting the reality in described power cabinet
Angle value；
Ring temperature temperature detector 320, is arranged in described power cabinet, for detecting ambient temperature in the cabinet in described power cabinet；
Water temperature temperature detector 330, is arranged at the outlet of described water-cooled current transformer, goes out water temperature for detect described outlet
Degree；
Power cabinet controller 340, for executing the water-cooled current transformer power cabinet control method described in any of the above-described embodiment.
Particularly, under described power cabinet run with load state, by the master control system 100 of power cabinet controller 340 and Wind turbines
Communicated, indirectly realized the on off control to heat exchanger in water-cooling system 200.
From said structure and function, the embodiment of the present application is controlled to water-cooling system indirectly by master control system,
From being modified without to the control system of Wind turbines；And realized to water by controlling the heat exchanger start and stop of water-cooling system
The leaving water temperature of cold current transformer controls, and is not required to additionally arrange heater for water-cooling system, you can realize to water-cooled current transformer work(
The dehumidifying condensation proof of rate cabinet controls, and greatly reduces control cost, solves problem of the prior art.
Further, the water-cooled current transformer power cabinet control device described in above-described embodiment, may also include and be arranged at power
Heater in cabinet, for carrying out heating and dehumidification to power cabinet.
In the above embodiments of the present application, the comparison of actual humidity value and default humidity value is held by described power cabinet controller
OK, thus heater is controlled also through described power cabinet controller.In the other embodiment of the application, actual humidity value
Detection, relatively also can the passing through a humidity controller simultaneously and realize of actual humidity value and default humidity value, and by comparative result
Send to power cabinet controller；Accordingly, the control to heater is realized also through this humidity controller.
In addition, this device may also include the fan with cooled plate, it is arranged in power cabinet；When adding due to heater
The factors such as heat effect, when leading to that in cabinet, ambient temperature is too high, can by opening this fan, so that ambient temperature in cabinet is reduced it is ensured that
The safe operation of water-cooled current transformer.
In addition, the embodiment of the present application five additionally provides a kind of water-cooled current transformer being applied to Wind turbines, as shown in figure 5,
It includes power cabinet 301, switch board 302 and grid-connection cabinet 303, and wherein, power cabinet 301 includes water-cooled current transformer power cabinet and controls dress
Put；Described water-cooled current transformer power cabinet control device at least includes humidity sensor 310, ring temperature temperature detector 320, water temperature temperature detector
330 and power cabinet controller 340.Power cabinet controller 340 by being communicated with the master control system 100 of Wind turbines, indirectly
Realize the on off control to heat exchanger in water-cooling system 200.
Further, described water-cooled current transformer power cabinet control device may also include heater 340 and has cooled plate
Fan 350.
One of ordinary skill in the art will appreciate that realizing all or part of flow process in above-described embodiment method, it is permissible
Instruct related hardware to complete by computer program, described program can be stored in a computer read/write memory medium
In, described program is upon execution, it may include as the flow process of the embodiment of above-mentioned each method.Wherein, described storage medium can be
Magnetic disc, CD, read-only memory (read-only memory, rom) or random access memory (random access
Memory, ram) etc..
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation are made a distinction with another entity or operation, and not necessarily require or imply these entities or deposit between operating
In any this actual relation or order.
Each embodiment in this specification is all described by the way of going forward one by one, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.To disclosed enforcement
The described above of example, makes professional and technical personnel in the field be capable of or uses the application.Multiple modifications to these embodiments
Will be apparent from for those skilled in the art, generic principles defined herein can be without departing from this
In the case of the spirit or scope of application, realize in other embodiments.Therefore, the application be not intended to be limited to illustrated herein
These embodiments, and be to fit to the wide scope consistent with principles disclosed herein and features of novelty.
Claims (9)
1. a kind of water-cooled current transformer power cabinet control method, obtains ambient temperature in power cabinet in real time it is characterised in that including:
The leaving water temperature of the actual humidity value in acquisition power cabinet and described water-cooled current transformer in real time；
Under described power cabinet run with load state, if described actual humidity value is less than default humidity value, according in described cabinet
First control instruction of the heat exchanger start and stop of ambient temperature and leaving water temperature generation control water-cooling system, and described first is controlled
System instruction sends to the master control system of Wind turbines, so that the difference of ambient temperature and leaving water temperature is pre- less than first in described cabinet
If the temperature difference；
Under described power cabinet run with load state, if described actual humidity value is not less than default humidity value, power cabinet is entered
Row heating and dehumidification, until described actual humidity value is less than described default humidity value, and according to ambient temperature and water outlet in described cabinet
Temperature generates the second control instruction of the heat exchanger start and stop controlling described water-cooling system, and described second control instruction is sent
To the master control system of Wind turbines, so that the difference of ambient temperature and leaving water temperature is less than the second fiducial temperature in described cabinet；
Wherein, described first fiducial temperature is more than the second fiducial temperature；
Under electric no-load condition on described power cabinet, if described actual humidity value is less than default humidity value, control described work(
Rate cabinet run with load, otherwise carries out heating and dehumidification to power cabinet, until described actual humidity value is less than described default humidity value.
2. water-cooled current transformer power cabinet control method according to claim 1 it is characterised in that described according in described cabinet
First control instruction of the heat exchanger start and stop of ambient temperature and the leaving water temperature generation described water-cooling system of control, comprising:
Determine the first startup water temperature tw11With the first shutdown water temperature tw12；
When described leaving water temperature is more than the first startup water temperature tw11When, generate the first enabled instruction making described heat exchanger start；
When described leaving water temperature is less than the first shutdown water temperature tw12When, generate the first halt instruction making described heat exchanger shut down；
Wherein,
Described first startup water temperature tw11Computing formula be tw11=ta- △ t1/n2；
Described first shutdown water temperature tw12Computing formula be tw12=ta- △ t1/n1；
Ta is ambient temperature in described cabinet, △ t1For described first fiducial temperature, n1For the first default negative sense return difference coefficient, n2For
Second default negative sense return difference coefficient, and 1≤n1＜ n2.
3. water-cooled current transformer power cabinet control method according to claim 1 it is characterised in that described according in described cabinet
Second control instruction of the heat exchanger start and stop of ambient temperature and the leaving water temperature generation described water-cooling system of control, comprising:
Determine the second startup water temperature tw21With the second shutdown water temperature tw22；
When described leaving water temperature is more than the second startup water temperature tw21When, generate the second enabled instruction making described heat exchanger start；
When described leaving water temperature is less than the second shutdown water temperature tw22When, generate the second halt instruction making described heat exchanger shut down；
Wherein,
Described second startup water temperature tw21Computing formula be tw21=ta- △ t2/n4；
Described second shutdown water temperature tw22Computing formula be tw22=ta- △ t2/n3；
Ta is ambient temperature in described cabinet, △ t2For described second fiducial temperature, n3For the 3rd default negative sense return difference coefficient, n4For
4th default negative sense return difference coefficient, and 1≤n3＜ n4.
4. water-cooled current transformer power cabinet control method according to claim 1 is it is characterised in that also include:
Start shooting under non-power-up state in described power cabinet, if described actual humidity value is less than default humidity value, control described work(
On rate cabinet, electricity, otherwise carries out heating and dehumidification to power cabinet, until described actual humidity value is less than described default humidity value.
5. the water-cooled current transformer power cabinet control method according to any one of Claims 1 to 4 is it is characterised in that also include:
It is under any state in described power cabinet, when in described cabinet, ambient temperature is more than default ring temperature protection value, and/or, institute
When stating leaving water temperature more than default water temperature protection value, described water-cooled current transformer is controlled to shut down.
6. water-cooled current transformer power cabinet control method according to claim 5 is it is characterised in that described carried out to power cabinet
Heating and dehumidification, comprising: start the heater in described power cabinet.
7. water-cooled current transformer power cabinet control method according to claim 6 is it is characterised in that work as environment temperature in described cabinet
When degree is more than default ring temperature protection value, described water-cooled current transformer power cabinet control method also includes: closes described heater.
8. a kind of water-cooled current transformer power cabinet control device is it is characterised in that include:
Humidity sensor, is arranged in described power cabinet, for detecting the actual humidity value in described power cabinet；
Ring temperature temperature detector, is arranged in described power cabinet, for detecting ambient temperature in the cabinet in described power cabinet；
Water temperature temperature detector, is arranged at the outlet of described water-cooled current transformer, for detecting the leaving water temperature of described outlet；
Power cabinet controller, for water-cooled current transformer power cabinet control method as described in any one of claim 1～7 for the execution.
9. a kind of water-cooled current transformer, including power cabinet, switch board and grid-connection cabinet it is characterised in that described power cabinet is included as power
Profit requires the water-cooled current transformer power cabinet control device described in 8.
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| CN103944358B (en) * | 2014-05-07 | 2016-07-20 | 湘电风能有限公司 | A kind of power model condensation prevention control method of wind power generating set water-cooled current transformer |
| CN105283035B (en) * | 2015-03-04 | 2017-11-21 | 爱美达（上海）热能系统有限公司 | A kind of flexible anti-condensation protection system |
| CN107885246A (en) * | 2016-09-30 | 2018-04-06 | 维谛技术有限公司 | A kind of water cooling converter system and its dehumanization method, starting-up method |
| CN108518319B (en) * | 2018-03-09 | 2023-12-29 | 远景能源有限公司 | Tower bottom cooling and dehumidifying system of offshore wind generating set and control method |
| CN112105238B (en) * | 2020-09-24 | 2022-09-20 | 安擎(天津)计算机有限公司 | Liquid cooling system for server and control method thereof |
| CN112668198A (en) * | 2021-01-05 | 2021-04-16 | 株洲中车时代电气股份有限公司 | Early warning method and device for filter screen blockage of current transformer in rail train and related equipment |
| CN114353412A (en) * | 2022-01-12 | 2022-04-15 | 广东美的暖通设备有限公司 | Control method and device of liquid cooling unit, readable storage medium and liquid cooling unit |
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