CN101788829A - Wind energy converter heating and dehumidifying system - Google Patents

Wind energy converter heating and dehumidifying system Download PDF

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Publication number
CN101788829A
CN101788829A CN200910188562A CN200910188562A CN101788829A CN 101788829 A CN101788829 A CN 101788829A CN 200910188562 A CN200910188562 A CN 200910188562A CN 200910188562 A CN200910188562 A CN 200910188562A CN 101788829 A CN101788829 A CN 101788829A
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China
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power
cabinet
heating
contactor
wind energy
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CN200910188562A
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Chinese (zh)
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CN101788829B (en
Inventor
刘会民
周红
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艾默生网络能源有限公司
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Priority to CN2009101885622A priority Critical patent/CN101788829B/en
Publication of CN101788829A publication Critical patent/CN101788829A/en
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Publication of CN101788829B publication Critical patent/CN101788829B/en

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Abstract

The invention relates to a wind energy converter heating and dehumidifying system. The system is characterized by comprising a control cabinet heating and dehumidifying system arranged in a control cabinet and a UPS start unit, wherein the control cabinet heating and dehumidifying system comprises a control cabinet detection unit, a control cabinet heating unit and a control cabinet dehumidifying unit; the control cabinet detection unit is used for detecting environment temperature and humidity in the control cabinet, and starting the control cabinet heating unit or the control cabinet dehumidifying unit to heat or dehumidify when the environment temperature or humidity does not meet single plate start condition of the control cabinet until the condition above is met; and the UPS start unit is controlled by the control cabinet detection unit to realize breakover and self-locking when the state that both environment temperature and humidity of the control cabinet meet the single plate start condition is detected by the control cabinet detection unit for the first time, and a UPS controlling the wind energy converter is started after the breakover of the UPS start unit is done. The invention guarantees sound performance and long service life of components in the wind energy converter.

Description

A kind of wind energy converter heating and dehumidifying system

Technical field

The present invention relates to a kind of heating and dehumidifying system, more particularly, relate to a kind of wind energy converter heating and dehumidifying system.

Background technology

Along with new forms of energy become the key point of economic growth, the development of wind generator system is more and more faster, has had many wind energy product inputs to use at present.For example, wind energy converter is exactly the important component part of wind generator system.

Yet, these wind energy product great majority are operated in north cold area, for example wind energy converter need move under the environment of low temperature and high relative humidity usually, its internal components causes the reduction in performance and life-span easily under the working environment of this low temperature and high relative humidity, perhaps take place because condensation causes accidents beyond control such as short circuit.Therefore, under low temperature, high humidity environment, normally start, need dispose heating and dehumidifying system for wind energy converter for cooperating wind energy converter.

Summary of the invention

The technical problem to be solved in the present invention is, at having the defective that wind energy converter is easy to be subjected to the low temperature and high relative humidity environmental impact now, provides a kind of wind energy converter heating and dehumidifying system.

The technical solution adopted for the present invention to solve the technical problems is: construct a kind of wind energy converter heating and dehumidifying system, heating and dehumidifying system and uninterrupted power source start unit are set in the switch board of wind energy converter, the heating and dehumidification unit does not heat when environment temperature or humidity do not satisfy the single board starting condition of switch board or dehumidifies, until satisfying condition, and conducting uninterrupted power source start unit and self-locking, be the power supply of wind energy converter control system thereby start uninterrupted power source; In addition, also in the be incorporated into the power networks cabinet and the power cabinet of wind energy converter, heating system is set respectively, satisfies device working environment at low temperatures with the temperature of keeping be incorporated into the power networks cabinet and power cabinet.

The invention provides a kind of wind energy converter heating and dehumidifying system, comprise switch board heating and dehumidifying system and the uninterrupted power source start unit be located in the switch board;

Described switch board heating and dehumidifying system comprises switch board detecting unit, switch board heating unit and switch board Dehumidifying element; Described switch board detecting unit is used to detect switch board environment temperature and humidity, and respectively when environment temperature or humidity do not satisfy the single board starting condition of switch board starting switch board heating unit or switch board Dehumidifying element heat or dehumidify, when environment temperature or humidity satisfy the single board starting condition, control switch board heating unit or switch board Dehumidifying element respectively and stop heating or dehumidify;

Described switch board detecting unit is control uninterrupted power source start unit conducting and self-locking when detecting switch board environment temperature and humidity first and all satisfy the single board starting condition, and the uninterrupted power source of control wind energy converter starts after the conducting of described uninterrupted power source start unit.

In wind energy converter heating and dehumidifying system of the present invention, described system also comprises the cabinet heating system that is incorporated into the power networks that is arranged in the cabinet that is incorporated into the power networks, the described cabinet heating system that is incorporated into the power networks comprises be incorporated into the power networks the cabinet detecting unit and the cabinet heating unit that is incorporated into the power networks, the described cabinet detecting unit that is incorporated into the power networks is used for detecting the cabinet environment temperature that is incorporated into the power networks, and do not satisfy when being incorporated into the power networks the cabinet entry condition control cabinet heating unit heating of being incorporated into the power networks in environment temperature, satisfy when being incorporated into the power networks the cabinet entry condition control cabinet heating unit that is incorporated into the power networks in environment temperature and stop heating.

In wind energy converter heating and dehumidifying system of the present invention, described system also comprises the power cabinet heating system that is arranged in the power cabinet, described power cabinet heating system comprises power cabinet detecting unit and power cabinet heating unit, described power cabinet detecting unit is used for detection power cabinet environment temperature, and control power cabinet heating unit heating when environment temperature does not satisfy the power cabinet entry condition, control power cabinet heating unit stops heating when environment temperature satisfies the power cabinet entry condition.

In wind energy converter heating and dehumidifying system of the present invention:

Described switch board detecting unit comprises coil, first temperature relay, humidity contactor, the normally closed contact of first contactor and the coil of second contactor of first contactor; The coil of described first contactor, first temperature relay and humidity relay are connected between the power supply of wind energy converter, and the coil of the normally closed contact of described first contactor and second contactor is connected between the power supply of wind energy converter; Described first temperature relay adopts normally opened contact, and operating temperature is-3 ℃ to 3 ℃; Described humidity relay adopts normally closed contact, and action humidity is 85% to 95%;

Described switch board heating unit comprises the normally opened contact and the primary heater of second contactor between the power supply that is connected on wind energy converter;

Described switch board Dehumidifying element comprises first dehumidifier between the zero-power line of the normally opened contact that is connected on second contactor and wind energy converter and the normally opened contact of humidity relay.

In wind energy converter heating and dehumidifying system of the present invention:

Described uninterrupted power source start unit comprises the normally opened contact and the 3rd contactor of first contactor; After the normally opened contact parallel connection of the normally opened contact of described first contactor and the 3rd contactor, the power firestreak of one termination wind energy converter, the other end links to each other with the zero-power line of wind energy converter by the coil of the 3rd contactor, and the coil of described the 3rd contactor is also controlled uninterrupted power source and started.

In wind energy converter heating and dehumidifying system of the present invention:

The described cabinet detecting unit that is incorporated into the power networks comprises second temperature relay between the power supply that is connected on wind energy converter and the coil of the 4th contactor; Described second temperature relay adopts normally closed contact, and operating temperature is-18 ℃ to-12 ℃;

The described cabinet heating unit that is incorporated into the power networks comprises the normally opened contact and the secondary heater of the 4th contactor between the power supply that is connected on wind energy converter.

In wind energy converter heating and dehumidifying system of the present invention:

Described power cabinet detecting unit comprises the coil of the 3rd temperature relay, the 5th contactor and the 6th contactor; The coil of described the 3rd temperature relay and the 5th contactor is connected between the power supply of wind energy converter, and the coil of the normally closed contact of the 5th contactor and the 6th contactor is connected between the power supply of wind energy converter; Described the 3rd temperature relay adopts normally closed contact, and operating temperature is-3 ℃ to 3 ℃;

Described power cabinet heating unit comprises normally opened contact, the 3rd well heater and the 4th well heater of the 6th contactor, an end is by the give a dinner for a visitor from afar live wire of power supply that can current transformer of the normally opened contact of the 6th contactor after described the 3rd well heater and the 4th well heater parallel connection, the give a dinner for a visitor from afar zero line of power supply that can current transformer of the other end.

In wind energy converter heating and dehumidifying system of the present invention, described at first contactor between the power supply of wind energy converter normally closed contact and the circuit at the coil place of second contactor on also string first temperature protection relay is arranged; Also string has second temperature protection relay on the circuit at the coil place of second temperature relay between the power supply of wind energy converter and the 4th contactor; Also string has the 3rd temperature protection relay on the circuit at the coil place of the normally closed contact of the 5th contactor between the power supply of wind energy converter and the 6th contactor; Between the zero line of the power supply of the normally opened contact of the 6th contactor and wind energy converter, also be in series with the 4th temperature protection relay on the circuit at the 4th well heater place; Described first temperature protection relay, second temperature protection relay, the 3rd temperature protection relay and the 4th temperature protection relay all adopt normally closed contact, and operating temperature is 47 ℃ to 53 ℃.

In wind energy converter heating and dehumidifying system of the present invention:

Node between the coil of described first contactor and first temperature relay, and also be provided with first isolating switch between the zero line of the power supply of wind energy converter;

The live wire of the power supply of wind energy converter is connected to the switch board detecting unit after by second isolating switch, the cabinet detecting unit that is incorporated into the power networks, power cabinet detecting unit and uninterrupted power source start unit;

The live wire of the power supply of wind energy converter is connected to switch board heating unit, switch board Dehumidifying element after by the 3rd isolating switch, cabinet heating unit and power cabinet heating unit are incorporated into the power networks.

In wind energy converter heating and dehumidifying system of the present invention:

Described first temperature relay and primary heater are arranged on the middle part of switch board;

Described second temperature relay is arranged on the middle part of the cabinet that is incorporated into the power networks, and described secondary heater is arranged on the bottom of the cabinet that is incorporated into the power networks;

Described the 3rd temperature relay and the 3rd well heater are arranged on around the heat radiator of power module assembly of power cabinet, and described the 4th well heater is the heating film that is arranged on the drive plate bottom of power cabinet.

Implement wind energy converter heating and dehumidifying system of the present invention, has following beneficial effect: by in the switch board of wind energy converter, heating and dehumidifying system being set, with the device of keeping switch board in suitable temperature and humidity work, simultaneously by in be incorporated into the power networks cabinet and power cabinet, heating system being set respectively at wind energy converter, keep the working temperature of be incorporated into the power networks cabinet and power cabinet, thereby ensured the performance and the life-span of device in the wind energy converter, avoided because condensation causes accidents beyond control such as short circuit.

Description of drawings

The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the structural representation of switch board one preferred embodiment in the wind energy converter heating and dehumidifying system of the present invention;

Fig. 2 is the structural representation of cabinet one preferred embodiment of being incorporated into the power networks in the wind energy converter heating and dehumidifying system of the present invention;

Fig. 3 is the structural representation of power cabinet one preferred embodiment in the wind energy converter heating and dehumidifying system of the present invention;

Fig. 4 is the circuit theory diagrams of wind energy converter heating and dehumidifying system one preferred embodiment of the present invention.

Embodiment

In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.

The 2MW wind energy converter comprises three main racks, is respectively switch board 10, cabinet 20 and power cabinet 30 are incorporated into the power networks.Therefore, wind energy converter heating and dehumidifying system provided by the invention comprises three parts, controls temperature and/or humidity in each rack respectively.Because main control veneer is located in the switch board 10, start UPS (UninterruptiblePower Supply, uninterrupted power source) work when therefore the temperature and humidity in switch board 10 satisfies the single board starting condition.

See also Fig. 1, be the structural representation of switch board one preferred embodiment in the wind energy converter heating and dehumidifying system of the present invention.As shown in Figure 1, wind energy converter heating and dehumidifying system provided by the invention comprises switch board heating and dehumidifying system 100 and the UPS start unit of being located in the switch board 10 140.Switch board heating and dehumidifying system 100 is used for switch board 10 is carried out heating and dehumidification keeping the device operate as normal, and UPS start unit 140 is used for starting UPS work when the environment temperature of switch board 10 and humidity satisfy the single board starting condition.The single board starting condition is approximately: the temperature minimum is-3 ℃ to 3 ℃; The humidity mxm. is 85% to 95%.

Wherein, switch board heating and dehumidifying system 100 further comprises switch board detecting unit 110, switch board heating unit 120 and switch board Dehumidifying element 130 again.

Switch board detecting unit 110 is used to detect switch board 10 environment temperatures and humidity, and when switch board 10 environment temperatures are lower than the temperature minimum of single board starting, start-up control cabinet heating unit 120 heats, and reaches the temperature minimum and stops heating until switch board 10 environment temperatures.Simultaneously, switch board detecting unit 110 also when switch board 10 ambient humidities are higher than the humidity mxm. of single board starting start-up control cabinet Dehumidifying element 130 dehumidify, until switch board 10 ambient humidities be lower than the humidity mxm. and stop the dehumidifying.When environment temperature or humidity did not satisfy condition once more, switch board detecting unit 110 can detect and start-up control cabinet heating unit 120 or 130 work of switch board Dehumidifying element once more.

In addition, switch board detecting unit 110 is when the environment temperature that detects switch board 10 first and humidity all satisfy the single board starting condition, be that temperature is greater than the temperature minimum, when humidity is higher than the humidity mxm., control UPS start unit 140 conductings and self-locking, the UPS of control wind energy converter starts after described UPS start unit 140 conductings.Because UPS start unit 140 self-locking after conducting, so when switch board detecting unit 110 detects environment temperature or humidity once more and do not satisfy the single board starting condition once more, also can not be cut off, but power for wind energy converter constantly.

See also Fig. 2, be the structural representation of cabinet one preferred embodiment of being incorporated into the power networks in the wind energy converter heating and dehumidifying system of the present invention.As shown in Figure 2, wind energy converter heating and dehumidifying system provided by the invention also comprises the cabinet heating system 200 that is incorporated into the power networks that is arranged in the cabinet 20 of being incorporated into the power networks, and is used for the cabinet 20 that is incorporated into the power networks is heated to maintain under the cabinet entry condition that is incorporated into the power networks, and makes the device operate as normal.The cabinet entry condition that is incorporated into the power networks is approximately: the temperature minimum is-18 ℃ to-12 ℃.

Wherein, the described cabinet heating system 200 that is incorporated into the power networks further comprises be incorporated into the power networks the cabinet detecting unit 210 and the cabinet heating unit 220 that is incorporated into the power networks.The described cabinet detecting unit 210 that is incorporated into the power networks is used for detecting cabinet 20 environment temperatures that are incorporated into the power networks, and do not satisfy when being incorporated into the power networks the cabinet entry condition in cabinet 20 environment temperatures that are incorporated into the power networks, control cabinet heating unit 220 heating of being incorporated into the power networks are satisfied when being incorporated into the power networks the cabinet entry condition control cabinet heating unit 220 that is incorporated into the power networks until cabinet 20 environment temperatures that are incorporated into the power networks and are stopped heating.When cabinet 20 environment temperatures that are incorporated into the power networks did not satisfy condition once more, the cabinet detecting unit 210 that is incorporated into the power networks can detect once more and start the cabinet heating unit 220 that is incorporated into the power networks and work.

See also Fig. 3, be the structural representation of power cabinet one preferred embodiment in the wind energy converter heating and dehumidifying system of the present invention.As shown in Figure 3, wind energy converter heating and dehumidifying system provided by the invention also comprises the power cabinet heating system 300 that is arranged in the power cabinet 30, is used for power cabinet 30 is heated to maintain under power cabinet 30 entry conditions, makes the device operate as normal.Power cabinet 30 entry conditions are approximately: the temperature minimum is-3 ℃ to 3 ℃.

Wherein, described power cabinet heating system 300 further comprises power cabinet detecting unit 310 and power cabinet heating unit 320.Power cabinet detecting unit 310 is used for detection power cabinet environment temperature, and when environment temperature did not satisfy the power cabinet entry condition, power controlling cabinet heating unit 320 heating control power cabinet heating unit 320 when environment temperature satisfies the power cabinet entry condition stopped heating.When power cabinet 30 environment temperatures did not satisfy condition once more, power cabinet detecting unit 310 can detect and 320 work of starting power cabinet heating unit once more.

See also Fig. 4, be the circuit theory diagrams of wind energy converter heating and dehumidifying system one preferred embodiment of the present invention.As shown in Figure 4, the circuit of wind energy converter heating and dehumidifying system is connected between the live wire and zero line of power supply of wind energy converter.

Respectively each composition and circuit theory that is arranged on three each unit in the rack is described below:

1, switch board 10

Switch board detecting unit 110 comprises coil, the first temperature relay T33, the normally closed contact of humidity relay R H31, the first contactor KM33 and the coil of the second contactor KM31 of the first contactor KM33; The coil of the described first contactor KM33, the first temperature relay T33 and humidity relay R H31 are connected between the power supply of wind energy converter, the described first temperature relay T33 adopts normally opened contact, and operating temperature is generally-3 ℃ to 3 ℃ according to the minimum setting of temperature in the single board starting condition.Humidity relay R H31 adopts normally closed contact, and action humidity is set to 85% to 95% according to the mxm. of humidity in the single board starting condition.The coil of the normally closed contact of the first contactor KM33 and the second contactor KM31 is connected between the power supply of wind energy converter; also can on this circuit, be provided for the first temperature protection relay T34 of overheat protector; this relay adopts normally closed contact, and operating temperature is 47 ℃ to 53 ℃.

Switch board heating unit 120 comprises normally opened contact and the primary heater R1 of the second contactor KM31 between the power supply that is connected on wind energy converter.Primary heater R1 is according to the capacity of switch board 10, and requires to be provided with the thermal equilibrium of be incorporated into the power networks cabinet 20 and power cabinet 30, for example can adopt the well heater of about 10 350W.

Switch board Dehumidifying element 130 comprises the first dehumidifier FM3 between the zero-power line of the normally opened contact that is connected on the second contactor KM31 and wind energy converter and the normally opened contact of humidity relay R H31.

UPS start unit 104 comprises normally opened contact and the 3rd contactor KM34 of the first contactor KM33; After the normally opened contact parallel connection of the normally opened contact of the described first contactor KM33 and the 3rd contactor KM34, the power firestreak of one termination wind energy converter, the other end links to each other with the zero-power line of wind energy converter by the coil of the 3rd contactor KM34, and the coil of described the 3rd contactor KM34 is also controlled UPS and started.

When the environment temperature of switch board 10 is lower than in the single board starting condition temperature minimum; the first temperature relay T33 is in normally open; the coil of the first contactor KM33 does not power on; the normally closed contact closure of the first contactor KM33; the first temperature protection relay T34 closure; the coil of the second contactor KM31 powers on, thereby makes the normally opened contact closure of KM31, and primary heater R1 begins heating.When the environment temperature of switch board 10 is higher than in the single board starting condition temperature minimum; the first temperature relay T33 closure; the coil of the first contactor KM33 powers on; the normally closed contact of the first contactor KM33 disconnects; the first temperature protection relay T34 closure; the coil power down of the second contactor KM31, thus make the normally opened contact of KM31 disconnect, and primary heater R1 stops heating.

Correspondingly, when environment temperature is lower than in the single board starting condition temperature minimum, and the ambient humidity of switch board 10 is when being higher than in the single board starting condition humidity mxm., the normally opened contact closure of humidity relay R H31, and the first dehumidifier FM3 begins dehumidifying.When ambient humidity was lower than in the single board starting condition humidity mxm., the normally opened contact of humidity relay R H31 disconnected, and the first dehumidifier FM3 quits work.

When environment temperature and humidity all satisfy the single board starting condition, the first temperature relay T33 closure, humidity relay R H31 closure, the coil of the first contactor KM33 powers on, the normally opened contact closure of the first contactor KM33, the coil of the 3rd contactor KM34 powers on, and makes the UPS of wind energy converter work.Simultaneously, the normally opened contact closure of the 3rd contactor KM34 realizes self-locking, makes the coil of the 3rd contactor KM34 power on always, thereby does not cut off the UPS of wind energy converter.

In addition, can also be provided with first circuit breaker Q 33 between the zero line of the node between the coil of the first contactor KM33 and the first temperature relay T33 and the power supply of wind energy converter, so that can force start when low temperature, the coil of the contactor KM33 that wins is powered on, and then conducting UPS unit.

2, the cabinet 20 that is incorporated into the power networks

The cabinet detecting unit 210 that is incorporated into the power networks comprises the second temperature relay T31 between the power supply that is connected on wind energy converter and the coil of the 4th contactor KM30; The described second temperature relay T31 adopts normally closed contact, and operating temperature is generally-18 ℃ to-12 ℃ according to temperature minimum setting in the entry condition of the cabinet that is incorporated into the power networks.In addition, can also go here and there the second temperature protection relay T32 that is useful on overheat protector on this circuit, this relay adopts normally closed contact, and operating temperature is 47 ℃ to 53 ℃.

The cabinet heating unit 220 that is incorporated into the power networks comprises normally opened contact and the secondary heater R2 of the 4th contactor KM30 between the power supply that is connected on wind energy converter.Secondary heater R2 is according to being incorporated into the power networks the capacity of cabinet 20, and requires to be provided with the thermal equilibrium of switch board 10 and power cabinet 30, for example can adopt the well heater of about 5 350W.

When the environment temperature of the cabinet 20 that is incorporated into the power networks was lower than the temperature minimum of the cabinet entry condition that is incorporated into the power networks, the second temperature relay T31 was in normally off, the second temperature protection relay T32 closure, and the coil of the 4th contactor KM30 powers on, and secondary heater R2 begins heating.When the environment temperature of the cabinet 20 that is incorporated into the power networks was higher than the temperature minimum of the cabinet entry condition that is incorporated into the power networks, the second temperature relay T31 disconnected, the coil power down of the 4th contactor KM30, and secondary heater R2 stops heating.

3, power cabinet 30

Power cabinet detecting unit 310 comprises the coil of the 3rd temperature relay T35, the 5th contactor KM35 and the 6th contactor KM32; The coil of described the 3rd temperature relay T35 and the 5th contactor KM35 is connected between the power supply of wind energy converter.Described the 3rd temperature relay T35 adopts normally closed contact, and operating temperature is provided with according to the temperature minimum of the entry condition of power cabinet, is generally-3 ℃ to 3 ℃.The coil of the normally closed contact of the 5th contactor KM35 and the 6th contactor KM32 is connected between the power supply of wind energy converter; and can also be provided for the 3rd temperature protection relay T36 of overheat protector on this circuit; this relay adopts normally closed contact, and operating temperature is 47 ℃ to 53 ℃.

Power cabinet heating unit 320 comprises normally opened contact, the 3rd well heater R3 and the 4th well heater R4 of the 6th contactor KM32, an end is by the give a dinner for a visitor from afar live wire of power supply that can current transformer of the normally opened contact of the 6th contactor KM32 after described the 3rd well heater R3 and the 4th well heater R4 parallel connection, the give a dinner for a visitor from afar zero line of power supply that can current transformer of the other end.The well heater that the 3rd well heater R3 heats for the heat radiator to the IGBT (Insulated Gate BipolarTransistor, insulated gate bipolar transistor) of power cabinet 30.The 3rd well heater R3 is according to the capacity of power cabinet 30, and requires to be provided with the thermal equilibrium of the switch board 10 and the cabinet 20 that is incorporated into the power networks, and for example can adopt the well heater of about 6 200W.The heating film that the 4th well heater R4 heats for the Signals Transfer Board to power cabinet 30.The 4th well heater R4 can need to be provided with more, adopts the heating film of 7 70W in the present embodiment.In addition; between the zero line of the power supply of the normally opened contact of the 6th contactor KM32 and wind energy converter; can also be in series with the 4th temperature protection relay T38 that is used for overheat protector on the circuit at the 4th well heater R4 place, it adopts normally closed contact, and operating temperature is 47 ℃ to 53 ℃.

When the environment temperature of power cabinet 30 is lower than the temperature minimum of power cabinet 30 entry conditions; the 3rd temperature relay T35 is in normally open; the coil power down of the 5th contactor KM35; the normally closed contact closure of the 5th contactor KM35; the 3rd temperature protection relay T36 closure; the coil of the 6th contactor KM32 powers on, the normally opened contact closure of the 6th contactor KM32, and the 3rd well heater R3 and the 4th well heater R4 begin heating.When the environment temperature of power cabinet 30 is higher than the temperature minimum of power cabinet 30 entry conditions, the 3rd temperature relay T35 closure, the coil of the 5th contactor KM35 powers on, the normally closed contact of the 5th contactor KM35 disconnects, the coil power down of the 6th contactor KM32, the normally opened contact of the 6th contactor KM32 disconnects, and the 3rd well heater R3 and the 4th well heater R4 stop heating.

Each unit in above-mentioned three racks, second circuit breaker Q 32 and the 3rd circuit breaker Q 33 are set respectively at the live wire end of the power supply of wind energy converter, thereby as the master switch of the detecting unit in three racks and heating or Dehumidifying element.For example, the live wire of the power supply of wind energy converter is connected to switch board detecting unit 110 after by second circuit breaker Q 32, the cabinet detecting unit 210 that is incorporated into the power networks, power cabinet detecting unit 310 and UPS start unit 140.The live wire of the power supply of wind energy converter is connected to switch board heating unit 120, switch board Dehumidifying element 130 after by the 3rd circuit breaker Q 31, cabinet heating unit 220 and power cabinet heating unit 320 are incorporated into the power networks.

The needs that the present invention also distributes according to the device of different racks are arranged the locus of wind energy converter heating and dehumidifying system.In switch board 10, the first temperature relay T33 is located at the middle part of switch board 10 so that detect environment temperature in the switch board 10 more accurately, and since the bottom of switch board 10 be provided with device such as electric capacity and do not need heating, therefore, primary heater R1 also is arranged on the middle part of switch board 10, makes heat upwards transmit.In the cabinet 20 that is incorporated into the power networks, the second temperature relay T31 is arranged on the middle part of the cabinet 20 that is incorporated into the power networks so that detect environment temperature in the cabinet 20 that is incorporated into the power networks more accurately, thereby described secondary heater R2 then is arranged on the bottom of the cabinet 20 that is incorporated into the power networks upwards transmits heat, and the device of bottom is also realized heating well.In power cabinet 30, the 3rd temperature relay T35 and the 3rd well heater R3 are arranged on around the heat radiator of IGBT of power module assembly of power cabinet 30, so that to the detection and the heating of power module assembly surrounding environment.The 4th well heater R4 then is arranged on the drive plate bottom of power cabinet 30.

Wind energy converter heating and dehumidifying system of the present invention is by being provided with heating and dehumidifying system in the switch board of wind energy converter, with the device of keeping switch board in suitable temperature and humidity work, by in the be incorporated into the power networks cabinet and the power cabinet of wind energy converter, heating system being set respectively, keep the working temperature of be incorporated into the power networks cabinet and power cabinet simultaneously.The heating system choice of capacity of each cupboard will reach three cupboards and arrive a machine temperature (i.e. the thermal equilibriums of three cupboard heating) that requires simultaneously in the identical time that requires, be incorporated into the power networks cabinet and the switch board heating system of this heating system can reach the type that satisfies the varying environment temperature requirement by simple increase and the number that reduces well heater, thereby ensured the performance and the life-span of device in the wind energy converter, avoided because condensation causes accidents beyond control such as short circuit.

The present invention is described according to specific embodiment, but it will be understood by those skilled in the art that when not breaking away from the scope of the invention, can carry out various variations and be equal to replacement.In addition, for adapting to the specific occasion or the material of the technology of the present invention, can carry out many modifications and not break away from its protection domain the present invention.Therefore, the present invention is not limited to specific embodiment disclosed herein, and comprises that all drop into the embodiment of claim protection domain.

Claims (10)

1. a wind energy converter heating and dehumidifying system is characterized in that, comprises switch board heating and dehumidifying system and the uninterrupted power source start unit be located in the switch board;
Described switch board heating and dehumidifying system comprises switch board detecting unit, switch board heating unit and switch board Dehumidifying element; Described switch board detecting unit is used to detect switch board environment temperature and humidity, and respectively when environment temperature or humidity do not satisfy the single board starting condition of switch board starting switch board heating unit or switch board Dehumidifying element heat or dehumidify, when environment temperature or humidity satisfy the single board starting condition, control switch board heating unit or switch board Dehumidifying element respectively and stop heating or dehumidify;
Described switch board detecting unit is control uninterrupted power source start unit conducting and self-locking when detecting switch board environment temperature and humidity first and all satisfy the single board starting condition, and the uninterrupted power source of control wind energy converter starts after the conducting of described uninterrupted power source start unit.
2. wind energy converter heating and dehumidifying system according to claim 1, it is characterized in that, described system also comprises the cabinet heating system that is incorporated into the power networks that is arranged in the cabinet that is incorporated into the power networks, the described cabinet heating system that is incorporated into the power networks comprises be incorporated into the power networks the cabinet detecting unit and the cabinet heating unit that is incorporated into the power networks, the described cabinet detecting unit that is incorporated into the power networks is used for detecting the cabinet environment temperature that is incorporated into the power networks, and do not satisfy when being incorporated into the power networks the cabinet entry condition control cabinet heating unit heating of being incorporated into the power networks in environment temperature, satisfy when being incorporated into the power networks the cabinet entry condition control cabinet heating unit that is incorporated into the power networks in environment temperature and stop heating.
3. wind energy converter heating and dehumidifying system according to claim 1, it is characterized in that, described system also comprises the heating system that is arranged in the power cabinet, described power cabinet heating system comprises power cabinet detecting unit and power cabinet heating unit, described power cabinet detecting unit is used for detection power cabinet environment temperature, and control power cabinet heating unit heating when environment temperature does not satisfy the power cabinet entry condition, control power cabinet heating unit stops heating when environment temperature satisfies the power cabinet entry condition.
4. wind energy converter heating and dehumidifying system according to claim 1 is characterized in that:
Described switch board detecting unit comprises coil, first temperature relay (T33), humidity relay (RH31), the normally closed contact of first contactor (KM33) and the coil of second contactor (KM31) of first contactor (KM33); The coil of described first contactor (KM33), first temperature relay (T33) and humidity relay (RH31) are connected between the power supply of wind energy converter, and the coil of the normally closed contact of described first contactor (KM33) and second contactor (KM31) is connected between the power supply of wind energy converter; Described first temperature relay (T33) adopts normally opened contact, and operating temperature is-3 ℃ to 3 ℃; Described humidity relay (RH31) adopts normally closed contact, and action humidity is 85% to 95%;
Described switch board heating unit comprises the normally opened contact and the primary heater (R1) of second contactor (KM31) between the power supply that is connected on wind energy converter;
Described switch board Dehumidifying element comprises first dehumidifier (FM3) between the zero-power line of the normally opened contact that is connected on second contactor (KM31) and wind energy converter and the normally opened contact of humidity relay (RH31).
5. wind energy converter heating and dehumidifying system according to claim 4 is characterized in that:
Described uninterrupted power source start unit comprises the normally opened contact and the 3rd contactor (KM34) of first contactor (KM33); After the normally opened contact parallel connection of the normally opened contact of described first contactor (KM33) and the 3rd contactor (KM34), the power firestreak of one termination wind energy converter, the other end links to each other with the zero-power line of wind energy converter by the coil of the 3rd contactor (KM34), and the coil control uninterrupted power source of described the 3rd contactor (KM34) starts.
6. wind energy converter heating and dehumidifying system according to claim 2 is characterized in that:
The described cabinet detecting unit that is incorporated into the power networks comprises second temperature relay (T31) between the power supply that is connected on wind energy converter and the coil of the 4th contactor (KM30); Described second temperature relay (T31) adopts normally closed contact, and operating temperature is-18 ℃ to-12 ℃;
The described cabinet heating unit that is incorporated into the power networks comprises the normally opened contact and the secondary heater (R2) of the 4th contactor (KM30) between the power supply that is connected on wind energy converter.
7. wind energy converter heating and dehumidifying system according to claim 3 is characterized in that:
Described power cabinet detecting unit comprises the coil of the 3rd temperature relay (T35), the 5th contactor (KM35) and the 6th contactor (KM32); The coil of described the 3rd temperature relay (T35) and the 5th contactor (KM35) is connected between the power supply of wind energy converter, and the coil of the normally closed contact of the 5th contactor (KM35) and the 6th contactor (KM32) is connected between the power supply of wind energy converter; Described the 3rd temperature relay (T35) adopts normally closed contact, and operating temperature is-3 ℃ to 3 ℃;
Described power cabinet heating unit comprises main contact, the 3rd well heater (R3) and the 4th well heater (R4) of the 6th contactor (KM32), described the 3rd well heater (R3) and the 4th well heater (R4) back in parallel one end is by the give a dinner for a visitor from afar live wire of power supply that can current transformer of the normally opened contact of the 6th contactor (KM32), the give a dinner for a visitor from afar zero line of power supply of energy current transformer of the other end.
8. according to any described wind energy converter heating and dehumidifying system in the claim 4 to 7, it is characterized in that, described at first contactor (KM33) between the power supply of wind energy converter normally closed contact and the circuit at the coil place of second contactor (KM31) on also string first temperature protection relay (T34) is arranged; Also string has second temperature protection relay (T32) on the circuit at the coil place of second temperature relay (T31) between the power supply of wind energy converter and the 4th contactor (KM30); Also string has the 3rd temperature protection relay (T36) on the circuit at the coil place of the normally closed contact of the 5th contactor (KM35) between the power supply of wind energy converter and the 6th contactor (KM32); Between the zero line of the power supply of the normally opened contact of the 6th contactor (KM32) and wind energy converter, also be in series with the 4th temperature protection relay (T38) on the circuit at the 4th well heater (R4) place; Described first temperature protection relay (T34), second temperature protection relay (T32), the 3rd temperature protection relay (T36) and the 4th temperature protection relay (T38) all adopt normally closed contact, and operating temperature is 47 ℃ to 53 ℃.
9. wind energy converter heating and dehumidifying system according to claim 8 is characterized in that:
Node between the coil of described first contactor (KM33) and first temperature relay (T33), and also be provided with first isolating switch (Q33) between the zero line of the power supply of wind energy converter;
The live wire of the power supply of wind energy converter is connected to the switch board detecting unit after by second isolating switch (Q32), the cabinet detecting unit that is incorporated into the power networks, power cabinet detecting unit and uninterrupted power source start unit;
The live wire of the power supply of wind energy converter is connected to switch board heating unit, switch board Dehumidifying element after by the 3rd isolating switch (Q31), cabinet heating unit and power cabinet heating unit are incorporated into the power networks.
10. according to any described wind energy converter heating and dehumidifying system in the claim 4 to 7, it is characterized in that:
Described first temperature relay (T33) and primary heater (R1) are arranged on the middle part of switch board;
Described second temperature relay (T31) is arranged on the middle part of the cabinet that is incorporated into the power networks, and described secondary heater (R2) is arranged on the bottom of the cabinet that is incorporated into the power networks;
Described the 3rd temperature relay (T35) and the 3rd well heater (R3) are arranged on around the heat radiator of power module assembly of power cabinet, and described the 4th well heater (R4) is the heating film of the drive plate bottom that is arranged on power cabinet.
CN2009101885622A 2009-11-27 2009-11-27 Wind energy converter heating and dehumidifying system CN101788829B (en)

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CN102468776A (en) * 2010-10-29 2012-05-23 永济新时速电机电器有限责任公司 Inverter used in low temperature environment and photovoltaic system
CN102570790A (en) * 2012-02-21 2012-07-11 深圳市禾望电气有限公司 Low-temperature starting method for wind power current transformer
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CN111290444A (en) * 2020-03-04 2020-06-16 阳光电源股份有限公司 Heating and dehumidifying system of converter and control method thereof

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CN102468776B (en) * 2010-10-29 2015-04-08 永济新时速电机电器有限责任公司 Inverter used in low temperature environment and photovoltaic system
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CN102866718A (en) * 2012-09-25 2013-01-09 广东易事特电源股份有限公司 Method and device for preventing condensation of PCB (printed circuit board) of UPS (uninterrupted power supply) or EPS (emergency power supply) host
CN103838276A (en) * 2012-11-26 2014-06-04 浙江海得新能源有限公司 Heating and dehumidification logic circuit
CN103838277A (en) * 2012-11-26 2014-06-04 浙江海得新能源有限公司 Heating and dehumidification logic circuit with defrosting function
CN103838275A (en) * 2012-11-26 2014-06-04 浙江海得新能源有限公司 Heating and dehumidification logic circuit
CN103616909B (en) * 2013-11-29 2017-01-25 阳光电源股份有限公司 Method and device for controlling water cooled converter power cabinet and water cooled converter adopting same
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CN104767177B (en) * 2015-03-31 2017-10-03 株洲南车时代电气股份有限公司 A kind of converter plant with temperature control defencive function
CN104767177A (en) * 2015-03-31 2015-07-08 株洲南车时代电气股份有限公司 Conversion device with temperature control protecting function
CN105514838A (en) * 2015-12-31 2016-04-20 北京天诚同创电气有限公司 Method and device for heating control of converter cabinet of wind generating set
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CN111290444A (en) * 2020-03-04 2020-06-16 阳光电源股份有限公司 Heating and dehumidifying system of converter and control method thereof

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