CN217421417U - Low-temperature starting system of wind generating set - Google Patents
Low-temperature starting system of wind generating set Download PDFInfo
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- CN217421417U CN217421417U CN202221406223.4U CN202221406223U CN217421417U CN 217421417 U CN217421417 U CN 217421417U CN 202221406223 U CN202221406223 U CN 202221406223U CN 217421417 U CN217421417 U CN 217421417U
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Abstract
The utility model discloses embodiment provides a wind generating set low temperature start-up system belongs to wind power equipment control technical field. The intelligent temperature control system comprises a main control unit and at least one sub-control unit, wherein the main control unit comprises a main controller, and the sub-control unit comprises a sub-controller, a sub-temperature control unit and a sub-electric control switch unit; the main controller forms a power supply loop with the power supply through the normally open contact of the sub electric control switch unit, the output end of the sub temperature control unit is connected with the input end of the sub controller, and the output end of the sub controller is connected with the control end of the sub electric control switch unit. The utility model discloses can solve wind turbine generator system's sub-the control unit because of starting the order and leaning on the trouble that the back problem leads to, restart unit major control system after sub-the control unit all starts, guarantee that major control system can normally round and patrol IO equipment, can reduce the unit fault rate, improve the operating duration and the generated energy of unit.
Description
Technical Field
The utility model relates to a wind power equipment control technical field specifically relates to a wind generating set low temperature start-up system.
Background
The wind generating set comprises a wind generating set, a variable-pitch device, a converter, a master control system and other components, wherein the variable-pitch device, the converter, the master control system and other components have certain requirements on the operating temperature, when the temperature of a cabin or a tower bottom is too low, a heater is firstly started to heat the components before starting, and the wind generating set can be started when the temperature rises to a certain degree. However, the power, the heating space and the installation position of the heater of each component are different, so that the time for heating to the temperature at which the equipment can be started is different. After the master control system is started, other IO devices connected to the unit master control system are firstly subjected to round inspection, information of the devices cannot be read if the controllers of other components such as a variable pitch component, a converter and the like are not started during round inspection, the communication fault of the unit is reported due to failure of connection, and the communication fault of the unit cannot be automatically recovered even if the component controllers are started after the fault is reported, so that the fault rate of the unit is increased, and the normal operation of the unit is influenced.
For the problem of low-temperature starting of the wind generating set, a common processing method is that the set is reset through a central control room after a fault is reported or a maintainer is dispatched to a stand to reset, when a controller of a converter, a variable pitch component and the like is started, the fault can be eliminated through a reset main control system program, and the set operates normally. However, if the control system operates in the central control room and the pitch or converter control system is not started after reset is pressed down, the fault cannot be eliminated, the reset fault needs to be tried again after a period of time, the starting time cannot be accurately judged, and the generating capacity of the unit is influenced; if the unit is reset, each unit of the wind power plant needs to be started in sequence for a longer time, a large amount of manpower and material resources are wasted, and the generating capacity of the unit is also influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a wind generating set low temperature start-up system to solve above-mentioned problem.
In order to achieve the above object, in a first aspect of the present invention, a low temperature starting system for a wind generating set is provided, which includes a main control unit and at least one sub-control unit, wherein the main control unit includes a main controller, and the sub-control unit includes a sub-controller, a sub-temperature control unit and a sub-electric control switch unit;
the main controller and the power supply form a power supply loop through a normally open contact of the sub electric control switch unit, the output end of the sub temperature control unit is connected with the input end of the sub controller, and the output end of the sub controller is connected with the control end of the sub electric control switch unit;
the sub temperature control unit is used for monitoring the environment temperature of the sub control unit and starting and stopping heating the sub control unit; and the sub-controller is used for sending a control signal to the control end of the sub-electric control switch unit so as to close the normally open contact of the sub-electric control switch unit.
Optionally, the main control unit further includes a main temperature control unit, and the main temperature control unit includes:
a first temperature controller and a first heater;
the first heater and a power supply form a power supply loop through the first temperature controller, and the output end of the first temperature controller is connected with the input end of the main controller;
the first temperature controller is used for monitoring the ambient temperature of the main control unit and is used for switching on or switching off the first heater and a power supply loop of a power supply.
Optionally, the at least one sub-control unit comprises:
the first sub-control unit and the second sub-control unit;
the first sub-control unit includes:
the first sub-controller, the first sub-temperature control unit and the first sub-electric control switch unit;
the output end of the first sub-temperature control unit is connected with the input end of the first sub-controller, the output end of the first sub-controller is connected with the control end of the first sub-electric control switch unit, and the normally open contact of the first sub-electric control switch unit is connected between the main controller and the power supply in series;
the second sub-control unit includes:
the second sub-controller, the second sub-temperature control unit and the second sub-electric control switch unit;
the output end of the second sub-temperature control unit is connected with the input end of the second sub-controller, the output end of the second sub-controller is connected with the control end of the second sub-electric control switch unit, and the normally open contact of the second sub-electric control switch unit is connected with the normally open contact of the first sub-electric control switch unit in parallel.
Optionally, the first sub-temperature control unit includes:
a second temperature controller and a second heater;
the second heater and a power supply form a power supply loop through the second temperature controller, and the output end of the second temperature controller is connected with the input end of the first sub-controller;
the second temperature controller is used for monitoring the ambient temperature of the first sub-control unit and is used for switching on or switching off the second heater and a power supply loop of a power supply.
Optionally, the second sub-temperature control unit includes:
a third temperature controller and a third heater;
the third heater and a power supply form a power supply loop through the third temperature controller, and the output end of the third temperature controller is connected with the input end of the second sub-controller;
the third temperature controller is used for monitoring the ambient temperature of the second sub-control unit and is used for switching on or switching off the third heater and a power supply loop of a power supply.
Optionally, the first sub-electrically controlled switch unit comprises:
a first sub electric control switch element and a second sub electric control switch element;
the output end of the first sub-controller is connected with the control end of the first sub-electric control switch element, the control end of the second sub-electric control switch element forms a power supply loop with a power supply through the normally open contact of the first sub-electric control switch element, the first end of the first normally open contact of the second sub-electric control switch element is connected with the power supply, and the second end of the first normally open contact of the second sub-electric control switch element is connected with the main controller.
Optionally, the second sub-electrically controlled switch unit comprises:
a third sub electric control switch element and a fourth sub electric control switch element;
the output end of the second sub-controller is connected with the control end of the third sub-electric control switch element, the control end of the fourth sub-electric control switch element forms a power supply loop with a power supply through the normally open contact of the third sub-electric control switch element, the first end of the first normally open contact of the fourth sub-electric control switch element is connected with the second end of the first normally open contact of the second sub-electric control switch element, and the second end of the first normally open contact of the fourth sub-electric control switch element is connected with the main controller.
Optionally, a second normally open contact of the second sub electronic control switch element is connected in parallel with a normally open contact of the first sub electronic control switch element, and a control end of the second sub electronic control switch element forms a power supply loop with the power supply through the second normally open contact of the second sub electronic control switch element.
Optionally, a second normally open contact of the fourth sub electrical control switch element is connected in parallel with a normally open contact of the third sub electrical control switch element, and a control end of the fourth sub electrical control switch element forms a power supply loop with the power supply through the second normally open contact of the fourth sub electrical control switch element.
Optionally, the system further comprises:
a delay switching element; the first end of the normally closed contact of the second sub electric control switch element is connected with the first end of the normally closed contact of the fourth sub electric control switch element and then connected with the first end of the first normally open contact of the second sub electric control switch element, the second end of the normally closed contact of the second sub electric control switch element is connected with the second end of the normally closed contact of the fourth sub electric control switch element and then connected with the first end of the delay switch element, and the second end of the delay switch element is connected with the second end of the first normally open contact of the fourth sub electric control switch element and then connected with the main controller.
The utility model discloses above-mentioned technical scheme can solve wind turbine generator system's sub-the control unit because of starting the order lean on the trouble that the back problem leads to, restart unit major control system after sub-the control unit all starts, guarantee that major control system can normally round the IO equipment of patrolling, can reduce the unit fault rate, improve the operating duration and the generated energy of unit.
Other features and advantages of embodiments of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention, but do not constitute a limitation of the embodiments of the invention. In the drawings:
fig. 1 is a circuit structure diagram of a main control unit of a wind turbine provided by an embodiment of the present invention;
fig. 2 is a circuit structure diagram of a converter control unit provided by the embodiment of the present invention;
fig. 3 is a circuit structure diagram of a pitch system control unit provided by the embodiment of the present invention.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As shown in fig. 1 to 3, the present embodiment provides a low temperature starting system for a wind turbine generator system, which includes a main control unit and at least one sub-control unit, wherein the main control unit includes a main controller, and the sub-control unit includes a sub-controller, a sub-temperature control unit and a sub-electric control switch unit;
the main controller forms a power supply loop with the power supply through the normally open contact of the sub electric control switch unit, the output end of the sub temperature control unit is connected with the input end of the sub controller, and the output end of the sub controller is connected with the control end of the sub electric control switch unit;
the sub-temperature control unit is used for monitoring the environment temperature of the sub-control unit and heating the sub-control unit when the environment temperature of the sub-control unit is lower than a threshold value and stopping heating the sub-control unit when the environment temperature of the sub-control unit is not lower than the threshold value, and the sub-controller is used for sending a control signal to the control end of the sub-electric control switch unit when the environment temperature of the sub-control unit is not lower than the threshold value so as to close the normally open contact of the sub-electric control switch unit.
So, this embodiment can solve the sub-control unit of wind turbine generator system because of starting the trouble that the order leads to by the back problem, restarts the main control system of unit after sub-control unit all starts, guarantees that main control system can normally round the IO equipment of patrolling, can reduce the unit fault rate, improves the operating time and the generated energy of unit.
Wherein, main control unit sets up in wind turbine generator system's tower bottom switch board, and main control unit still includes main temperature control unit, and main temperature control unit includes:
a first temperature controller and a first heater; the first heater and the power supply form a power supply loop through a first temperature controller, and the output end of the first temperature controller is connected with the input end of the main controller; the first temperature controller is used for monitoring the ambient temperature of the main control unit, conducting a power supply loop of the first heater and the power supply when the ambient temperature of the main control unit is lower than a threshold value, and disconnecting the power supply loop of the first heater and the power supply when the ambient temperature of the main control unit is not lower than the threshold value.
The first temperature controller at least comprises a control chip, a temperature sensor and a controllable switch element, wherein the temperature sensor and the controllable switch element are connected with the control chip, the first heater E1 and the contact S1 of the controllable switch element are connected in series between the live wire L and the zero wire N of the power supply of the main control system of the unit, namely, the first heater E1 and the power supply of the main control system of the unit form a power supply loop through the normally open contact S1 of the controllable switch element. Wherein, temperature sensor is used for monitoring the ambient temperature in the switch board at the bottom of the tower, and control chip is used for the break-make according to the controllable switch element of received ambient temperature control, can understand, and first temperature controller can adopt the current temperature controller that has temperature monitoring and on-off control function wantonly, and the temperature controller is prior art, and here is no longer repeated. It can be understood that, the first temperature threshold value of the first thermostat controlling the conduction of the first heater and the power supply loop of the power supply and the second temperature threshold value of the first thermostat controlling the disconnection of the first heater and the power supply loop of the power supply may be the same or different, in this embodiment, the first thermostat may be set such that when the temperature is lower than 5 ℃, the contact S1 of the first thermostat is closed, the first heater E1 is powered on to start working, and when the temperature is higher than 10 ℃, the contact S1 of the first thermostat is disconnected, at this time, the temperature of the main controller meets the start requirement, and the first heater E1 stops heating. In this embodiment, a switch S2 is further disposed between the main controller and the power supply of the unit main control system, a first end of the switch S2 is connected to a live line end L of the power supply of the unit main control system, a second end of the switch S2 is connected to a first end of a normally open contact of the sub electronic control switch unit, and a second end of the normally open contact of the sub electronic control switch unit is connected to the main controller. It can be understood that the first temperature controller can send the ambient temperature in the control cabinet to the main controller in real time, and when the main controller judges that the current temperature is greater than the threshold value, the main controller is started.
In this embodiment, at least one of the sub-control units includes: the first sub-control unit and the second sub-control unit; the first sub-control unit is a converter control unit and is arranged in the converter control cabinet; the second sub-control unit is a variable pitch system control unit and is arranged in the variable pitch control cabinet. It can be understood that the sub-control units are not limited to the converter control unit and the pitch system control unit, and the sub-control units may include all other devices that need to communicate.
The converter control unit includes: the converter comprises a converter controller, a first sub temperature control unit and a first sub electric control switch unit; the output end of the first sub temperature control unit is connected with the input end of the first sub controller, the output end of the first sub controller is connected with the control end of the first sub electric control switch unit, and the normally open contact of the first sub electric control switch unit is connected between the main controller and the power supply in series;
the second sub-control unit includes: the variable pitch system controller, the second sub temperature control unit and the second sub electric control switch unit; the output end of the second sub-temperature control unit is connected with the input end of the second sub-controller, the output end of the second sub-controller is connected with the control end of the second sub-electric control switch unit, and the normally open contact of the second sub-electric control switch unit is connected with the normally open contact of the first sub-electric control switch unit in parallel.
Wherein, first sub-temperature control unit includes: a second temperature controller and a second heater; the second heater and the power supply form a power supply loop through a second temperature controller, and the output end of the second temperature controller is connected with the input end of the first sub-controller; the second temperature controller is used for monitoring the ambient temperature of the first sub-control unit, conducting a power supply loop of the second heater and the power supply when the ambient temperature of the first sub-control unit is lower than a threshold value, and disconnecting the power supply loop of the second heater and the power supply when the ambient temperature of the first sub-control unit is not lower than the threshold value.
In this embodiment, the second temperature controller has the same structure as the first temperature controller, or the second temperature controller may be the same type as the first temperature controller. The contact S11 of the second temperature controller is connected with the live wire L1 of the power supply of the converter controller, the second heater E11 is connected with the contact S11 of the second temperature controller in series and then is connected with the zero wire N1 of the power supply of the converter controller, and then the second heater E11 forms a power supply loop with the power supply of the converter controller through the contact S11 of the second temperature controller. It can be understood that the third temperature threshold for the second thermostat to control the conduction of the second heater and the power supply loop of the power supply and the fourth temperature threshold for the second thermostat to control the disconnection of the second heater and the power supply loop of the power supply may be the same or different, in this embodiment, the second thermostat may be set such that when the temperature is lower than 5 ℃, the contact S11 of the second thermostat is closed, the second heater E11 is powered on to start working, and when the temperature is higher than 10 ℃, the contact S11 of the second thermostat is opened, at this time, the temperature of the converter controller meets the start requirement, and the second heater E11 stops heating. In this embodiment, a switch S12 is further disposed between the converter controller and the converter controller power supply, the switch S12 is connected in series between the live line end L1 of the converter controller power supply and the power end L of the converter controller, and the power end N of the converter controller is connected to the neutral line end N1 of the converter controller power supply.
The second sub temperature control unit includes: a third temperature controller and a third heater; the third heater and the power supply form a power supply loop through a third temperature controller, and the output end of the third temperature controller is connected with the input end of the second sub-controller; the third temperature controller is used for monitoring the environment temperature of the second sub-control unit, conducting a power supply loop of the third heater and the power supply when the environment temperature of the second sub-control unit is lower than a threshold value, and disconnecting the power supply loop of the third heater and the power supply when the environment temperature of the second sub-control unit is not lower than the threshold value.
Wherein, first sub-automatically controlled switch unit includes: a first sub electric control switch element and a second sub electric control switch element; the output end of the first sub-electronic control switch element is connected with the control end of the first sub-electronic control switch element, the control end of the second sub-electronic control switch element forms a power supply loop with a power supply through the normally open contact of the first sub-electronic control switch element, the first end of the first normally open contact of the second sub-electronic control switch element is connected with the power supply, and the second end of the first normally open contact of the second sub-electronic control switch element is connected with the main controller.
It can be understood that the first sub-electrically controlled switching element and the second sub-electrically controlled switching element may be a contactor, a relay, a triode, or a MOS transistor, wherein the first sub-electrically controlled switching element may be independently disposed or integrated in the converter controller, which is not limited in this embodiment. The output end of the converter controller is connected with the control end of the first sub electric control switch element, in this embodiment, the first sub electric control switch element and the second sub electric control switch element are taken as contactors, the control end of the first sub electric control switch element is a contactor coil, the first end of the normally open contact K11 of the first sub electric control switch element is connected with the live wire end L11 of the converter control signal power supply, the second end of the normally open contact K11 of the first sub electric control switch element is connected with the first end of the contactor coil K2 of the second sub electric control switch element, and the second end of the contactor coil K2 is connected with the power end N of the converter controller and the neutral wire end N1 of the converter controller power supply. The first end of the first normally open contact K21 of the second sub electrically controlled switch element is connected with the second end of the switch S2. It can be understood that the second temperature controller can send the ambient temperature in the control cabinet to the converter controller in real time, when the converter controller judges that the current temperature is greater than the threshold value, for example, 10 ℃, the converter controller sends a control signal to the contactor coil of the first sub electric control switch element to enable the first sub electric control switch element to be powered on, so that the normally open contact K11 of the first sub electric control switch element is closed, a start signal is sent to the contactor coil K2 to enable the contactor coil K2 to be powered on, and the first normally open contact K21 of the first sub electric control switch element is closed.
In order to prevent the danger caused by the loss of power of the master control suddenly due to the communication interruption in the operation process of the unit, the second normally open contact K22 of the second sub electric control switch element is connected in parallel with the normally open contact K11 of the first sub electric control switch element, and the contactor coil K2 of the second sub electric control switch element and the power supply form a power supply loop through the second normally open contact K22 of the second sub electric control switch element. Concretely, the first end of the second normally open contact K22 of the second sub electric control switch element is connected with the first end of the normally open contact K11 of the first sub electric control switch element and then is connected with the zero line end L11 of the power supply source of the converter control signal, the second end of the second normally open contact K22 of the second sub electric control switch element is connected with the first end of the contactor coil K2, and thus, the second normally open contact K22 of the second sub electric control switch element is connected with the contactor coil K2 in parallel to form a self-locking loop, sudden power loss of the main control can be effectively avoided, and the unit is caused to be out of control and is dangerous.
In this embodiment, the third temperature controller has the same structure as the first temperature controller and the second temperature controller, or the third temperature controller may be the same type temperature controller as the first temperature controller and the second temperature controller. A contact S21 of the third temperature controller is connected with a live wire L2 of a power supply of the variable pitch system controller, a third heater E21 is connected with a contact S21 of the third temperature controller in series and then is connected with a zero line N2 of the power supply of the variable pitch system controller, and then the third heater E21 and the power supply of the variable pitch system controller form a power supply loop through a contact S21 of the third temperature controller. It can be understood that, the fifth temperature threshold of the third thermostat controlling to turn on the power supply loop of the third heater and the power supply and the sixth temperature threshold of the third thermostat controlling to turn off the power supply loop of the third heater and the power supply may be the same or different, in this embodiment, the third thermostat may be set such that when the temperature is lower than 5 ℃, the contact S21 of the third thermostat is closed, the third heater E21 is powered on to start working, and when the temperature is higher than 10 ℃, the contact S11 of the second thermostat is opened, at this time, the temperature of the converter controller meets the start requirement, and the third heater E21 stops heating. In this embodiment, a switch S22 is further provided between the power supply of the pitch system controller and the pitch system controller, the switch S22 is connected in series between the live wire L2 end of the power supply of the pitch system controller and the power supply end L of the pitch system controller, and the power supply end N of the pitch system controller is connected with the zero wire end N2 of the power supply of the pitch system controller.
Wherein, the second sub-electric control switch unit includes: a third sub electric control switch element and a fourth sub electric control switch element; the output end of the second sub-controller is connected with the control end of the third sub-electric control switch element, the control end of the fourth sub-electric control switch element forms a power supply loop with the power supply through the normally open contact of the third sub-electric control switch element, the first end of the first normally open contact of the fourth sub-electric control switch element is connected with the second end of the first normally open contact of the second sub-electric control switch element, and the second end of the first normally open contact of the fourth sub-electric control switch element is connected with the main controller.
It can be understood that the third sub-electrically controlled switching element and the fourth sub-electrically controlled switching element may be a contactor, a relay, a triode, or a MOS transistor, wherein the third sub-electrically controlled switching element may be independently disposed or integrated in the converter controller, which is not limited in this embodiment. The output end of the pitch system controller is connected with the control end of the third sub-electric control switch element, in this embodiment, the third sub-electric control switch element and the fourth sub-electric control switch element are taken as contactors, the control end of the third sub-electric control switch element is a contactor coil, the first end of the normally open contact K12 of the third sub-electric control switch element is connected with the live wire end L21 of the pitch system control signal power supply, the second end of the normally open contact K12 of the third sub-electric control switch element is connected with the first end of the contactor coil K3 of the fourth sub-electric control switch element, and the second end of the contactor coil K3 is connected with the power supply end N of the pitch system controller and the neutral wire end N2 of the pitch system controller power supply. The first end of the first normally open contact K31 of the fourth sub electric control switch element is connected with the second end of the first normally open contact K21 of the second sub electric control switch element, and the second end of the first normally open contact K31 of the fourth sub electric control switch element is connected with the power end L of the main controller. It can be understood that the third temperature controller can send the ambient temperature in the control cabinet to the variable pitch system controller in real time, if the current temperature is greater than the threshold value when the variable pitch system controller judges that the current temperature is 10 ℃, the variable pitch system controller sends a control signal to the contactor coil of the third sub electric control switch element to enable the third sub electric control switch element to be powered on, so that the normally open contact K12 of the third sub electric control switch element is closed, the started signal is sent to the contactor coil K3, the contactor coil K3 is powered on, and the first normally open contact K31 of the third sub electric control switch element is closed.
In order to prevent the danger caused by the loss of power of the master control suddenly due to the communication interruption in the operation process of the unit, the second normally open contact K32 of the fourth sub electric control switch element is connected in parallel with the normally open contact K12 of the third sub electric control switch element, and the contactor coil K3 of the fourth sub electric control switch element forms a power supply loop with the power supply through the second normally open contact K32 of the fourth sub electric control switch element. Concretely, the first end of the second normally open contact K32 of the fourth sub electric control switch element is connected with the first end of the normally open contact K12 of the third sub electric control switch element and then connected with the zero line end L21 of the power supply source for the control signal of the pitch control system, the second end of the second normally open contact K32 of the fourth sub electric control switch element is connected with the first end of the contactor coil K3, and thus, the second normally open contact K32 of the fourth sub electric control switch element is connected with the contactor coil K3 in parallel to form a self-locking loop, sudden power loss of the main control can be effectively avoided, and the machine set is caused to be out of control and is dangerous.
In order to avoid the unit to damage and lead to the unit unable start late because of communication module after the unit is electrified, the system still includes:
a delay switching element; the first end of the normally closed contact of the second sub electric control switch element is connected with the first end of the first normally open contact of the second sub electric control switch element after being connected with the first end of the normally closed contact of the fourth sub electric control switch element, the second end of the normally closed contact of the second sub electric control switch element is connected with the second end of the normally closed contact of the fourth sub electric control switch element and then is connected with the first end of the delay switch element, and the second end of the delay switch element is connected with the second end of the first normally open contact of the fourth sub electric control switch element and then is connected with the main controller.
In this embodiment, the time delay switch element is a time relay KT, the normally closed contact K23 of the second sub electrical control switch element is connected in parallel with the normally closed contact K33 of the fourth sub electrical control switch element and then connected in series with the time relay KT, specifically, the first end of the normally closed contact K23 of the second sub electrical control switch element is connected between the first end of the first normally open contact K21 of the second sub electrical control switch element and the second end of the switch S2 after being connected with the first end of the normally closed contact K33 of the fourth sub electrical control switch element, the second end of the normally closed contact K23 of the second sub electrical control switch element is connected with the second end of the normally closed contact K33 of the fourth sub electrical control switch element and then connected with the first end of the time delay switch element KT, and the second end of the time delay switch element KT is connected with the second end of the first normally open contact K31 of the fourth sub electrical control switch element and then connected with the power source terminal L of the main controller. Therefore, when the unit cannot be started after being electrified due to delay caused by damage of the communication module, the master control system can be started through the delay circuit, and a fault signal is sent to the central control room through the master control system to prompt maintenance personnel to go to the unit position for maintenance.
The working principle of the system is as follows:
before the system is started, switches S2, S12 and S22 are closed, the temperature in the tank is monitored through temperature controllers arranged in the tower bottom control cabinet, the converter control cabinet and the variable pitch control cabinet, when the temperature is lower than 5 ℃, contacts of the temperature controllers are attracted, and the heater is electrified to start working. When the temperature in the cabinet is higher than 10 ℃, the contact of the temperature controller is disconnected, the temperature of the controller meets the starting requirement, and the heater stops heating.
The converter controller starts and carries out self-checking after starting requirements, and after the self-checking is correct, the converter controller sends out a started signal to control a contactor coil K2 to be electrified, normally open contacts K21 and K22 are attracted, and simultaneously, a normally closed contact K23 is disconnected. The variable pitch system controller starts to be started and carries out self-checking after starting requirements, and after the self-checking is correct, the variable pitch system controller sends a started signal to control a contactor coil K3 to be electrified, normally open contacts K31 and K32 attract each other, and meanwhile, the normally closed contact K33 is disconnected. When all contactor contacts K21 and K31 are attracted, the main control system, namely the main controller of the unit, is electrified to start, and the unit starts to operate.
If the variable pitch system and the converter system can be heated to the starting temperature within m hours of electrification and started normally, wherein the value of m is set in advance according to actual environmental conditions in a cabinet and on site, after the unit is electrified for 1.5m hours, the master control system is still not started, communication of components is indicated to be possible to break down, the master control system is started through a starting loop established by a delay circuit, then a main controller of the unit sends a fault signal to a central control room, and a maintainer processes the fault on site. When the unit normally performs low-temperature starting, the normally closed contacts K23 and K33 are in an open state, the time delay circuit does not work, and the time delay starting is performed only when the low-temperature starting is not performed after the unit is electrified for 1.5m hours.
The present invention has been described in detail with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the details of the above embodiments, and the technical idea of the embodiments of the present invention can be within the scope of the present invention, and can be modified to various simple modifications, and these simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not separately describe various possible combinations.
Claims (10)
1. A low-temperature starting system of a wind generating set comprises a main control unit and at least one sub-control unit, and is characterized in that the main control unit comprises a main controller, and the sub-control unit comprises a sub-controller, a sub-temperature control unit and a sub-electric control switch unit;
the main controller forms a power supply loop with a power supply through a normally open contact of the sub electric control switch unit, the output end of the sub temperature control unit is connected with the input end of the sub controller, and the output end of the sub controller is connected with the control end of the sub electric control switch unit;
the sub temperature control unit is used for monitoring the environment temperature of the sub control unit and starting and stopping heating the sub control unit; and the sub-controller is used for sending a control signal to the control end of the sub-electric control switch unit so as to close the normally open contact of the sub-electric control switch unit.
2. The wind generating set cold start system of claim 1, wherein the main control unit further comprises a main temperature control unit, the main temperature control unit comprising:
a first temperature controller and a first heater;
the first heater and a power supply form a power supply loop through the first temperature controller, and the output end of the first temperature controller is connected with the input end of the main controller;
the first temperature controller is used for monitoring the ambient temperature of the main control unit and is used for switching on or switching off the first heater and a power supply loop of a power supply.
3. The wind park cold start system according to claim 1, wherein the at least one sub-control unit comprises:
the first sub-control unit and the second sub-control unit;
the first sub-control unit includes:
the first sub-controller, the first sub-temperature control unit and the first sub-electric control switch unit;
the output end of the first sub-temperature control unit is connected with the input end of the first sub-controller, the output end of the first sub-controller is connected with the control end of the first sub-electric control switch unit, and the normally open contact of the first sub-electric control switch unit is connected between the main controller and the power supply in series;
the second sub-control unit includes:
the second sub-controller, the second sub-temperature control unit and the second sub-electric control switch unit are arranged on the base;
the output end of the second sub-temperature control unit is connected with the input end of the second sub-controller, the output end of the second sub-controller is connected with the control end of the second sub-electric control switch unit, and the normally open contact of the second sub-electric control switch unit is connected with the normally open contact of the first sub-electric control switch unit in parallel.
4. The wind turbine generator system cold start system of claim 3, wherein the first sub temperature control unit comprises:
a second temperature controller and a second heater;
the second heater and a power supply form a power supply loop through the second temperature controller, and the output end of the second temperature controller is connected with the input end of the first sub-controller;
the second temperature controller is used for monitoring the ambient temperature of the first sub-control unit and is used for switching on or switching off the second heater and a power supply loop of a power supply.
5. The wind generating set low-temperature starting system according to claim 4, wherein the second sub temperature control unit comprises:
a third temperature controller and a third heater;
the third heater and a power supply form a power supply loop through the third temperature controller, and the output end of the third temperature controller is connected with the input end of the second sub-controller;
the third temperature controller is used for monitoring the ambient temperature of the second sub-control unit and is used for switching on or switching off the third heater and a power supply loop of a power supply.
6. The wind turbine generator system cold-start system of claim 3, wherein said first sub-electronically controlled switch unit comprises:
a first sub electric control switch element and a second sub electric control switch element;
the output end of the first sub-controller is connected with the control end of the first sub-electric control switch element, the control end of the second sub-electric control switch element forms a power supply loop with a power supply through the normally open contact of the first sub-electric control switch element, the first end of the first normally open contact of the second sub-electric control switch element is connected with the power supply, and the second end of the first normally open contact of the second sub-electric control switch element is connected with the main controller.
7. The wind turbine generator system cold-start system of claim 6, wherein said second sub-electronically controlled switch unit comprises:
a third sub electric control switch element and a fourth sub electric control switch element;
the output end of the second sub-controller is connected with the control end of the third sub-electric control switch element, the control end of the fourth sub-electric control switch element forms a power supply loop with a power supply through the normally open contact of the third sub-electric control switch element, the first end of the first normally open contact of the fourth sub-electric control switch element is connected with the second end of the first normally open contact of the second sub-electric control switch element, and the second end of the first normally open contact of the fourth sub-electric control switch element is connected with the main controller.
8. The wind generating set low-temperature starting system according to claim 6, wherein the second normally-open contact of the second sub-electrically-controlled switching element is connected in parallel with the normally-open contact of the first sub-electrically-controlled switching element, and the control end of the second sub-electrically-controlled switching element and the power supply form a power supply loop through the second normally-open contact of the second sub-electrically-controlled switching element.
9. The wind generating set low-temperature starting system according to claim 7, wherein the second normally-open contact of the fourth sub-electrically-controlled switching element is connected in parallel with the normally-open contact of the third sub-electrically-controlled switching element, and the control end of the fourth sub-electrically-controlled switching element forms a power supply loop with a power supply through the second normally-open contact of the fourth sub-electrically-controlled switching element.
10. The wind turbine generator set cold start system of claim 7, further comprising:
a delay switching element; the first end of the normally closed contact of the second sub electric control switch element is connected with the first end of the normally closed contact of the fourth sub electric control switch element and then connected with the first end of the first normally open contact of the second sub electric control switch element, the second end of the normally closed contact of the second sub electric control switch element is connected with the second end of the normally closed contact of the fourth sub electric control switch element and then connected with the first end of the delay switch element, and the second end of the delay switch element is connected with the second end of the first normally open contact of the fourth sub electric control switch element and then connected with the main controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221406223.4U CN217421417U (en) | 2022-06-06 | 2022-06-06 | Low-temperature starting system of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221406223.4U CN217421417U (en) | 2022-06-06 | 2022-06-06 | Low-temperature starting system of wind generating set |
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| Publication Number | Publication Date |
|---|---|
| CN217421417U true CN217421417U (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221406223.4U Active CN217421417U (en) | 2022-06-06 | 2022-06-06 | Low-temperature starting system of wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217421417U (en) |
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2022
- 2022-06-06 CN CN202221406223.4U patent/CN217421417U/en active Active
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