CN203098147U - Wind generating set safety chain control system - Google Patents
Wind generating set safety chain control system Download PDFInfo
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- CN203098147U CN203098147U CN2013200784908U CN201320078490U CN203098147U CN 203098147 U CN203098147 U CN 203098147U CN 2013200784908 U CN2013200784908 U CN 2013200784908U CN 201320078490 U CN201320078490 U CN 201320078490U CN 203098147 U CN203098147 U CN 203098147U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a wind generating set safety chain control system which comprises a master control PLC, a pitch system, a converter system, a yaw system, a rotor brake system, a power device, a plurality of failure nodes and a plurality of safety relays, wherein the output end of the power device is respectively connected with the pitch system, the converter system, the yaw system and the rotor brake system through different safety relays. The wind generating set safety chain control system further comprises a safety PLC, all the failure nodes are connected with the input end of the safety PLC, and coils of the safety relays are connected with the output end of the safety PLC respectively. According to the wind generating set safety chain control system, different failure information can be positioned accurately, and specific processing is conducted.
Description
Technical field
The utility model relates to technical field of wind power generation, specifically is a kind of wind power generating set safety chain control system.
Background technique
Wind energy is as a kind of energy of cleaning, become the current energy of giving priority to, wind generating technology is the technology that wind energy is converted to mechanical energy and then mechanical energy is converted to electric energy again, and along with the continuous development of wind generating technology, wind power generating set obtains application more and more widely.
For guaranteeing the wind power generating set safe operation; be generally wind-driven generator configuration set safety chain control system; safety chain control system can play a protective role to wind power generating set; when causing wind power generating set can not keep normally moving owing to wind power generating set control disabler, inside and outside damage or hazard event; safety chain control system can make the wind power generating set dead halt, to realize the protection to wind power generating set.
Present wind-power electricity generation safety chain control system generally comprises pitch-controlled system, converter system, yaw system, the rotor braking system, power supply unit, a plurality of malfunctioning nodes and safety relay K2, K3, K4, K5, K7, K8, K9, K10, it adopts the mode of safety relay link series connection, be about to the output terminal of power supply unit, each malfunctioning node and safety relay K2, K3, K4, K5, K7, K8, K9, the coil of K10 is connected into a loop successively, and the normally opened contact K4.1 of the output terminal of power supply unit and K4, the normally opened contact K5.1 series connection of K5 is input to pitch-controlled system, the normally opened contact K9.1 of the output terminal of power supply unit and K9, the normally opened contact K10.1 series connection of K10 is input to converter system, the normally opened contact K2.1 of the output terminal of power supply unit and K2, the normally opened contact K3.1 series connection of K3 is input to yaw system, the normally opened contact K7.1 of the output terminal of power supply unit and K7, the normally opened contact K8.1 series connection of K8 is input to the rotor braking system, when any one malfunctioning node breaks down, the safety relay link of this series connection disconnects, relay K 2, K3, K4, K5, K7, K8, K9, the equal dead electricity of the coil of K10, the normally opened contact K2.1 of K2, the normally opened contact K3.1 of K3, the normally opened contact K4.1 of K4, the normally opened contact K5.1 of K5, the normally opened contact K7.1 of K7, the normally opened contact K8.1 of K8, the normally opened contact K9.1 of K9, the normally opened contact K10.1 of K10 all disconnects, and makes pitch-controlled system carry out urgent feathering order, the converter system off-the-line, the yaw system outage, the rotor braking system starts.
This wind power generator control system has the following disadvantages: when breaking down, this wind power generating set safety chain control system can't position fault message, and can't handle targetedly according to corresponding fault when breaking down, can only make pitch-controlled system carry out urgent feathering order, converter system off-the-line, yaw system outage, the startup of rotor braking system simultaneously, reduce the working efficiency of this wind power generating set.
The model utility content
Technical problem to be solved in the utility model is, the wind power generating set safety chain control system that can accurately locate and handle targetedly different fault messages is provided.
For solving the problems of the technologies described above, the wind power generating set safety chain control system that the utility model provides, it comprises main control PLC, pitch-controlled system, converter system, yaw system, the rotor braking system, power supply unit, a plurality of malfunctioning nodes and safety relay K2, K3, K4, K5, K7, K8, K9, K10, the normally opened contact K4.1 of the output terminal of power supply unit and K4, the normally opened contact K5.1 series connection back of K5 is connected with pitch-controlled system, the normally opened contact K9.1 of the output terminal of power supply unit and K9, the normally opened contact K10.1 series connection back of K10 is connected with converter system, the normally opened contact K2.1 of the output terminal of power supply unit and K2, the normally opened contact K3.1 series connection back of K3 is connected with yaw system, the normally opened contact K7.1 of the output terminal of power supply unit and K7, the normally opened contact K8.1 series connection back of K8 is connected with the rotor braking system, it is characterized in that: it also comprises safety PLC, each malfunctioning node all is connected with the input end of safety PLC, safety relay K2, K3, K4, K5, K7, K8, K9, the coil of K10 is connected with the output terminal of safety PLC respectively.
After adopting above structure, the utility model compared with prior art has following advantage:
Because each malfunctioning node all is connected with safety PLC, safety PLC can be positioned all malfunctioning nodes, when a malfunctioning node breaks down, can learn it is which malfunctioning node breaks down by safety PLC, can in time handle malfunctioning node, and when breaking down, different malfunctioning nodes can allow the coil losing electricity of corresponding safety relay, make pitch-controlled system and/or converter system and/or yaw system and/or rotor braking system carry out action accordingly, when a malfunctioning node breaks down, do not need to make simultaneously again pitch-controlled system to carry out urgent feathering order, the converter system off-the-line, the yaw system outage, the rotor braking system starts, and can not reduce the working efficiency of wind power generating set.
As preferably, each malfunctioning node is connected with the input end of safety PLC respectively by two independent normally-closed contacts, that is to say that each malfunctioning node reaches the inlet opening of safety PLC by the input channel of two-way redundancy, guarantees the reliability of fault input.
As preferably, described a plurality of malfunctioning node is meant the anxious node that stops of tower seat, the anxious node that stops in cabin, the driftage node, vibration node, hypervelocity and low speed node, the tower seat suddenly stops node to be provided by an emergency stop button that is located at the tower seat, node is suddenly stopped in the cabin to be provided by an emergency stop button that is located at the cabin, the driftage node is provided by two driftage limit switches that are located at the cabin, that is to say that wind wheel postive direction of rotating and the driftage limit switch that all is fixed with a normally-closed contact in the other direction are connected with the safety PLC input, in case trigger the driftage limit switch when rotation of wind wheel postive direction or counter-rotation, to trigger this malfunctioning node, vibration node is provided by a vibration monitoring device that is located at the cabin, hypervelocity is provided by a safety speed control relay that is located at wind wheel with the low speed node, in sum, can monitor the various malfunctioning nodes that may influence the wind power generating set proper functioning, can in time make corresponding processing when breaking down, avoid wind power generating set to damage.
As preferably, the output terminal of described power supply unit is connected with pitch-controlled system with the normally opened contact K5.2 series connection back of normally opened contact K4.2, the K5 of K4, make pitch-controlled system that two separate links be arranged, have redundancy feature, when making any one normally opened contact disconnection in two links, pitch-controlled system improves the reliability of this safety chain control system urgent feathering.
As preferably, this wind-driven generator safety chain control system also comprises safety relay K6, K11, described main control PLC is connected with safety PLC by data/address bus, the output terminal of main control PLC respectively with K6, the coil of K11 connects, the normally opened contact K6.1 of K6 is serially connected with between the normally opened contact K5.1 and pitch-controlled system of K5, the normally opened contact K6.2 of K6 is serially connected with between the normally opened contact K5.2 and pitch-controlled system of K5, the normally opened contact K11.1 of K11 is serially connected with between the normally opened contact K8.1 and rotor braking system of K8, when safety PLC receives fault message, give the main control PLC control command by data/address bus, main control PLC allows safety relay K6 according to control command, the coil of K11 gets electric or dead electricity, safety relay K6, K11 often open or normally closed electric shock will be moved the transmission control command, further improved the reliability of this safety chain control system.
As preferably, be provided with safety relay K12 in the described pitch-controlled system, K13, the normally opened contact of K12, the normally opened contact of K13 is connected with the input end of safety PLC respectively, when pitch-controlled system enters urgent feathering state, the coil losing electricity of K12 will be made, the normally opened contact of K12 disconnects, notice safety PLC pitch-controlled system is in urgent feathering state, when pitch-controlled system is in feather position, the coil losing electricity of K13 will be made, the normally opened contact of K13 disconnects, notice safety PLC pitch-controlled system is in feather position, in case that is to say that pitch-controlled system enters urgent feathering state or pitch-controlled system is in feather position, will have corresponding information feedback and give safety PLC, the expression pitch-controlled system has been carried out corresponding action, if safety PLC is not received corresponding feedback information, the expression pitch-controlled system is not carried out corresponding action, will give the alarm, but further promote the reliability of this safety chain control system.
As preferably, the normally opened contact of main disconnector Q1 in the described converter system is connected with the input end of safety PLC, converter system inside is provided with main disconnector Q1, in case converter system off-the-line, the coil losing electricity of Q1, the normally opened contact of Q1 disconnects, in case that is to say the converter system off-the-line, to have corresponding information feedback and give safety PLC, if safety PLC is not received corresponding feedback information, the expression pitch-controlled system is not carried out corresponding action, will give the alarm, and has further promoted the reliability of this safety chain control system.
As preferably, the normally-closed contact K2.2 of the output terminal of described power supply unit and K2, the normally-closed contact K3.2 series connection back of K3 is connected with the input end of safety PLC, the normally-closed contact K4.3 of the output terminal of power supply unit and K4, the normally-closed contact K5.3 series connection back of K5 is connected with the input end of safety PLC, the normally-closed contact K7.2 of the output terminal of power supply unit and K7, the normally-closed contact K8.2 series connection back of K8 is connected with the input end of safety PLC, when triggering, certain malfunctioning node makes the yaw system outage, the rotor braking system starts, pitch-controlled system is carried out urgent feathering order, make accordingly K2 normally-closed contact K2.2 or/and the normally-closed contact K3.2 of K3 or/and the normally-closed contact K4.3 of K4 or/and the normally-closed contact K5.3 of K5 or/and the normally-closed contact K7.2 of K7 or/and the normally-closed contact K8.2 closure of K8, that is to say to have and feed back to safety PLC accordingly, if safety PLC is not received corresponding feedback information, the expression pitch-controlled system or/and converter system or/and yaw system or/and the rotor braking system is not carried out corresponding action, to give the alarm, further promote the reliability of this safety chain control system.
As preferably, this wind-driven generator safety chain control system also comprises grid monitoring system, grid monitoring system is connected with main control PLC by Field bus respectively with converter system and carries out communication, converter system and grid monitoring system all can be used for monitoring the output power of wind power generating set, converter system and grid monitoring system be independent operating separately, have redundancy feature, the power information of converter system and grid monitoring system is transferred to safety PLC by Field bus, when safety PLC monitors power greater than setting value, to carry out urgent feathering operation, order allows the coil losing electricity of safety relay K6 to safety PLC to main control PLC by Field bus, the normally opened contact K6.1 of K6, K6.2 disconnects, give the urgent feathering order of system, further promote the reliability of this safety chain control system.
As preferably, this wind-driven generator safety chain control system also comprise electric time-delay reset relay K 1, be respectively equipped with reset switch S5 and S6 in the tower seat of wind power generating set and the cabin, the output terminal of power supply unit is connected with the coil of K1, the output terminal of power supply unit and S5, be connected with the input end of safety PLC after the normally opened contact parallel connection of S6 and K1, after safety chain control system triggers, by reset switch S5 and S6, system is in time resetted, fault can in time be replied normal working after eliminating, when system boot, because the effect of time delay relay makes pitch-controlled system, converter system, yaw system, after the rotor braking system all starts, just make the normally opened contact closure of K1, make system reset, system normally resets when having guaranteed start.
Description of drawings
Fig. 1 is the structural representation of the utility model wind power generating set safety chain control system.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
By shown in Figure 1; the utility model wind power generating set safety chain control system comprises main control PLC, pitch-controlled system, converter system, yaw system, rotor braking system, power supply unit, a plurality of malfunctioning node and safety relay K2, K3, K4, K5, K7, K8, K9, K10; K2 herein, K3, K4, K5, K7, K8, K9, K10 all are for convenience of description, can not be considered as the restriction to the claim protection domain.
Described wind power generating set safety chain control system also comprises safety PLC, safety PLC is the safety PLC of wind power generating set special use, each malfunctioning node all is connected with the input end of safety PLC, one end of the coil of safety relay K2, K3, K4, K5, K7, K8, K9, K10 is connected with the output terminal of safety PLC respectively, the equal ground connection of the other end of the coil of safety relay K2, K3, K4, K5, K7, K8, K9, K10.
The vanepiston angle of pitch-controlled system control wind power generating set can automatically adjust with the size of wind speed. and when low wind speed started, the blade pitch can forward suitable angle to, made wind wheel have maximum starting torque; When wind speed is too high, by adjusting the blade pitch, change the angle of attack of air-flow, thereby change the aerodynamic torque that wind power generating set obtains blade, make generator power output keep stable; Converter system is made of main circuit system, electrical distribution system and control system, comprise the stator parts such as switch, rectification module, inversion module, I/O wave filter, circuit breaker, IGBT, PLC, JCE1000-AXS current sensor, blower fan, active C rowbar circuit, controller, monitoring interface that are incorporated into the power networks, be used to change output power, voltage, frequency, the number of phases of generator etc.; Yaw system is also referred to as wind apparatus, its role is to when the direction of wind vector changes, make wind wheel aim at wind direction in quick and stable ground, so that wind wheel obtains maximum wind energy, when wind direction changes, be positioned at wind wheel back two steering wheels (its plane of rotation and wind wheel plane of rotation are perpendicular) rotation, and make wind wheel deflection by the set of gears transmission system, after wind wheel was aimed at wind direction again, steering wheel stopped operating, and the wind process is finished; The rotor braking system is used to make the rotor braking with locked motor; Power supply unit provides the DC electrical source of 24V to be this system's power supply, and the direct current of power supply unit is provided by the ups power of wind-driven generator.
Described a plurality of malfunctioning node comprises the anxious node that stops of tower seat, the anxious node that stops in cabin, the driftage node, vibration node, hypervelocity and low speed node, the tower seat suddenly stops node to be provided by an emergency stop button that is located at the tower seat, node is suddenly stopped in the cabin to be provided by an emergency stop button that is located at the cabin, when needs are carried out the emergency shutdown operation, can operator can be by the emergency stop button on lower tower socket or the cabin, the driftage node is provided by two driftage limit switches that are located at the cabin, the postive direction that wind wheel rotates is connected with the input end of safety PLC with the driftage limit switch that all is fixed with a normally-closed contact in the other direction, in case trigger the driftage limit switch in rotation of wind wheel postive direction or the counter-rotation process, will trigger this malfunctioning node; Vibration node is provided by a vibration monitoring device that is located at the cabin, surpasses predetermined value in case the vibration monitoring device detects motor oscillating, will trigger this malfunctioning node; Hypervelocity is provided by a safety speed control relay that is located at wind wheel with the low speed node, the safety speed control relay is used to monitor rotating speed of motor, the safety speed control relay is provided with hypervelocity predetermined value and low speed predetermined value, when detecting motor speed above the hypervelocity predetermined value, promptly trigger the hypervelocity node, when detecting motor speed, promptly trigger the low speed node above the low speed predetermined value.
Each malfunctioning node is connected with the input end of safety PLC respectively by two independent normally-closed contacts, that is to say each malfunctioning node respectively by two independently link be connected to the input end of safety PLC, promptly have redundancy feature, when any one malfunctioning node triggered, two links of this malfunctioning node were all carried out open-circuit operation.
Described wind-driven generator safety chain control system also comprises safety relay K6, K11, described main control PLC is connected with safety PLC by data/address bus, the output terminal of main control PLC is connected the other end ground connection of the coil of K6, K11 with an end of the coil of K6, K11 respectively.
The normally opened contact K4.1 of the output terminal of power supply unit and K4, the normally opened contact K5.1 of K5, the normally opened contact K6.1 series connection back of K6 is connected with pitch-controlled system, the normally opened contact K4.2 of the output terminal of power supply unit and K4, the normally opened contact K5.2 of K5, the normally opened contact K6.2 series connection back of K6 is connected with pitch-controlled system, the normally opened contact K9.1 of the output terminal of power supply unit and K9, the normally opened contact K10.1 series connection back of K10 is connected with converter system, the normally opened contact K2.1 of the output terminal of power supply unit and K2, the normally opened contact K3.1 series connection back of K3 is connected with yaw system, the normally opened contact K7.1 of the output terminal of power supply unit and K7, the normally opened contact K8.1 of K8, the normally opened contact K11.1 series connection back of K11 is connected with the rotor braking system
Safety PLC is by the function of data/address bus monitoring main control PLC; when monitoring communication failure; safety PLC will be carried out shutdown operation; safety PLC allows the coil losing electricity of K4, K5, and normally opened contact K4.1, the K4.2 of K4 disconnects, and normally opened contact K5.1, the K5.2 of K5 disconnects; give the urgent feathering order of pitch-controlled system; order allows the coil losing electricity of K6 to main control PLC by data/address bus, and the normally opened contact K6.2 of K6 disconnects, as the redundancy of urgent feathering order.
Stop the anxious node that stops in node or cabin when triggering when the tower seat is anxious, safety PLC receives the emergency shutdown order, safety PLC at first allows safety relay K2, K3, the coil losing electricity of K4 and K5, the normally opened contact K4.1 of K4, the normally opened contact K5.1 of K4.2 and k5, K5.2 all disconnects, give the urgent feathering order of pitch-controlled system, the normally opened contact K2.1 of K2, the normally opened contact K3.1 of K3 disconnects, the power supply of yaw system breaks, order allows safety relay K6 coil losing electricity to safety PLC to main control PLC by data/address bus, the normally opened contact K6.1 of K6, K6.2 all disconnects, as the redundancy of urgent feathering order; When safety PLC is passed through hypervelocity with the low speed node acquisition signal that rotating speed is too high or rotating speed is low excessively, safety PLC will allow the coil losing electricity of safety relay K7 and K8, the normally opened contact K7.1 of K7, the normally opened contact K8.1 of K8 all disconnects, give rotor braking system rotor brake command, and by data/address bus order allows safety relay K11 coil losing electricity to main control PLC, the normally opened contact K11.1 of K11 disconnects, redundancy as the rotor brake command, last safety PLC allows safety relay K9, the K10 coil losing electricity, the normally opened contact K9.1 of K9, the normally opened contact K10.1 of k10 all disconnects, and gives the order of inverter off-the-line; After the driftage node triggers, safety PLC obtains the signal of driftage fault by the driftage limit switch, safety PLC at first allows the coil losing electricity of safety relay K2, K3, the normally opened contact K3.1 of normally opened contact K2.1, the K3 of K2 all disconnects, the break power supply of yaw system and the order of giving an orderly closedown of main control PLC by bus; After vibration node triggers, safety PLC obtains motor by the vibration monitoring device and crosses the information of vibration, safety PLC allows the coil losing electricity of safety relay K4, K5, normally opened contact K4.1, the K4.2 of K4 and normally opened contact K5.1, the K5.2 of K5 all disconnect, give the urgent feathering order of pitch-controlled system, and by bus order allows the coil losing electricity of safety relay K6 to main control PLC, normally opened contact K6.1, the K6.2 of K6 all disconnect, as the redundancy of urgent feathering order.
Be provided with safety relay K12 in the described pitch-controlled system, K13, the normally opened contact of K12, the normally opened contact of K13 is connected with the input end of safety PLC respectively, the output terminal that is to say power supply unit is the normally opened contact by K12 respectively, the normally opened contact of K13 is connected with the input end of safety PLC, when pitch-controlled system enters urgent feathering state, the coil losing electricity of K12 will be made, the normally opened contact of K12 disconnects, notice safety PLC pitch-controlled system is in urgent feathering state, when pitch-controlled system is in feather position, promptly all blades are when feather position, to make the coil losing electricity of K13, the normally opened contact of K13 disconnects, and notice safety PLC pitch-controlled system is in feather position.
The normally opened contact of main disconnector Q1 in the described converter system is connected with the input end of safety PLC, the output terminal that is to say power supply unit is connected with the input end of safety PLC by the normally opened contact of Q1, converter system inside is provided with main disconnector Q1, in case converter system off-the-line, the coil losing electricity of Q1, the normally opened contact of Q1 disconnects, in case that is to say the converter system off-the-line, will have corresponding information feedback and give safety PLC.
The normally-closed contact K2.2 of the output terminal of described power supply unit and K2, the normally-closed contact K3.2 series connection back of K3 is connected with the input end of safety PLC, the normally-closed contact K4.3 of the output terminal of power supply unit and K4, the input end of the normally-closed contact K5.3 series connection back safety PLC of K5 connects, the normally-closed contact K7.2 of the output terminal of power supply unit and K7, the normally-closed contact K8.2 series connection back of K8 is connected with the input end of safety PLC, when vibration node triggers, the normally opened contact K4.1 of K4, K4.2, the normally opened contact K5.1 of K5, K5.2 disconnects, make the normally-closed contact K4.3 of K4 accordingly, the normally-closed contact K5.3 closure of K5, give feedback signal of safety PLC, that is to say to have and feed back to safety PLC accordingly, show that vibration node triggers the back system and carried out corresponding operation, if safety PLC is not received corresponding feedback information, the expression pitch-controlled system is not carried out corresponding action, to give the alarm, when other each nodes trigger, have equally and feed back to safety PLC accordingly, do not describing in detail one by one here.
It also comprises grid monitoring system, grid monitoring system is connected with main control PLC by Field bus respectively with converter system, converter system and grid monitoring system all can be used for monitoring the output power of wind power generating set, converter system and grid monitoring system be independent operating separately, promptly have redundancy feature, the power information of converter system and grid monitoring system is transferred to safety PLC by Field bus, when safety PLC monitors power greater than setting value, to carry out urgent feathering operation, order allows the coil losing electricity of safety relay K6 to safety PLC to main control PLC by Field bus, the normally opened contact K6.1 of K6, K6.2 all disconnects, and gives the urgent feathering order of system.
It also comprise electric time-delay reset relay K 1, be respectively equipped with reset switch S5 and S6 in the tower seat of wind power generating set and the cabin, the output terminal of power supply unit is connected with an end of the coil of K1, the other end ground connection of the coil of K1, the output terminal of power supply unit and S5, be connected with the input end of safety PLC after the normally opened contact parallel connection of S6 and K1, after safety chain control system triggers, by reset switch S5 and S6, system is in time resetted, fault can in time be replied normal working after eliminating, when system boot, because the effect of time delay relay, make pitch-controlled system, converter system, yaw system, after the rotor braking system all starts, just make the normally opened contact closure of K1, make system reset.
Below only use preferable example with regard to the utility model and made explanation, but can not be interpreted as it is restriction to claim, structure of the present utility model can have other variations, is not limited to said structure.In a word, all various variations of being done in the protection domain of independent claims of the present utility model are all in protection domain of the present utility model.
Claims (10)
1. wind power generating set safety chain control system, it comprises main control PLC, pitch-controlled system, converter system, yaw system, the rotor braking system, power supply unit, a plurality of malfunctioning nodes and safety relay K2, K3, K4, K5, K7, K8, K9, K10, the normally opened contact K4.1 of the output terminal of power supply unit and K4, the normally opened contact K5.1 series connection back of K5 is connected with pitch-controlled system, the normally opened contact K9.1 of the output terminal of power supply unit and K9, the normally opened contact K10.1 series connection back of K10 is connected with converter system, the normally opened contact K2.1 of the output terminal of power supply unit and K2, the normally opened contact K3.1 series connection back of K3 is connected with yaw system, the normally opened contact K7.1 of the output terminal of power supply unit and K7, the normally opened contact K8.1 series connection back of K8 is connected with the rotor braking system, it is characterized in that: it also comprises safety PLC, each malfunctioning node all is connected with the input end of safety PLC, safety relay K2, K3, K4, K5, K7, K8, K9, the coil of K10 is connected with the output terminal of safety PLC respectively.
2. wind power generating set safety chain control system according to claim 1 is characterized in that: each malfunctioning node is connected with the input end of safety PLC respectively by two independent normally-closed contacts.
3. wind power generating set safety chain control system according to claim 2 is characterized in that: described a plurality of malfunctioning nodes are meant anxious node, anxious node, driftage node, vibration node, hypervelocity and the low speed node of stopping in cabin of stopping of tower seat.
4. wind power generating set safety chain control system according to claim 1 is characterized in that: the output terminal of described power supply unit is connected with pitch-controlled system with the normally opened contact K5.2 series connection back of normally opened contact K4.2, the K5 of K4.
5. wind power generating set safety chain control system according to claim 4, it is characterized in that: it also comprises safety relay K6, K11, described main control PLC is connected with safety PLC by data/address bus, the output terminal of main control PLC is connected with the coil of K6, K11 respectively, the normally opened contact K6.1 of K6 is serially connected with between the normally opened contact K5.1 and pitch-controlled system of K5, the normally opened contact K6.2 of K6 is serially connected with between the normally opened contact K5.2 and pitch-controlled system of K5, and the normally opened contact K11.1 of K11 is serially connected with between the normally opened contact K8.1 and rotor braking system of K8.
6. wind power generating set safety chain control system according to claim 1 is characterized in that: be provided with safety relay K12, K13 in the described pitch-controlled system, the normally opened contact of K12, the normally opened contact of K13 are connected with the input end of safety PLC respectively.
7. wind power generating set safety chain control system according to claim 1 is characterized in that: the normally opened contact of the main disconnector Q1 in the described converter system is connected with the input end of safety PLC.
8. wind power generating set safety chain control system according to claim 1, it is characterized in that: the output terminal of described power supply unit is connected with the input end of safety PLC with the normally-closed contact K3.2 series connection back of normally-closed contact K2.2, the K3 of K2, the output terminal of power supply unit is connected with the input end of safety PLC with the normally-closed contact K5.3 series connection back of normally-closed contact K4.3, the K5 of K4, and the output terminal of power supply unit is connected with the input end of safety PLC with the normally-closed contact K8.2 series connection back of normally-closed contact K7.2, the K8 of K7.
9. wind power generating set safety chain control system according to claim 1 is characterized in that: it also comprises grid monitoring system, and grid monitoring system is connected with main control PLC by Field bus respectively with converter system.
10. wind power generating set safety chain control system according to claim 1, it is characterized in that: it also comprise electric time-delay reset relay K 1, be respectively equipped with reset switch S5 and S6 in the tower seat of wind power generating set and the cabin, the output terminal of power supply unit is connected with the coil of K1, and the input end of safety PLC is connected after the normally opened contact parallel connection of the output terminal of power supply unit and S5, S6 and K1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200784908U CN203098147U (en) | 2013-02-20 | 2013-02-20 | Wind generating set safety chain control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013200784908U CN203098147U (en) | 2013-02-20 | 2013-02-20 | Wind generating set safety chain control system |
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| CN203098147U true CN203098147U (en) | 2013-07-31 |
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| CN2013200784908U Expired - Fee Related CN203098147U (en) | 2013-02-20 | 2013-02-20 | Wind generating set safety chain control system |
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| CN (1) | CN203098147U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089541A (en) * | 2013-02-20 | 2013-05-08 | 欣达重工股份有限公司 | Wind generating set safety chain control system |
| CN110630439A (en) * | 2019-09-24 | 2019-12-31 | 重庆科凯前卫风电设备有限责任公司 | Safety control system and control method of yaw motor |
| CN112963304A (en) * | 2021-02-26 | 2021-06-15 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Wind turbine generator overspeed protection auxiliary control method with torque control |
| WO2022088376A1 (en) * | 2020-10-28 | 2022-05-05 | 华能新能源股份有限公司河北分公司 | Automatic emergency yaw control system and method for preventing runaway of wind generator set |
-
2013
- 2013-02-20 CN CN2013200784908U patent/CN203098147U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089541A (en) * | 2013-02-20 | 2013-05-08 | 欣达重工股份有限公司 | Wind generating set safety chain control system |
| CN110630439A (en) * | 2019-09-24 | 2019-12-31 | 重庆科凯前卫风电设备有限责任公司 | Safety control system and control method of yaw motor |
| WO2022088376A1 (en) * | 2020-10-28 | 2022-05-05 | 华能新能源股份有限公司河北分公司 | Automatic emergency yaw control system and method for preventing runaway of wind generator set |
| CN112963304A (en) * | 2021-02-26 | 2021-06-15 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Wind turbine generator overspeed protection auxiliary control method with torque control |
| CN112963304B (en) * | 2021-02-26 | 2023-11-24 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Wind turbine generator overspeed protection auxiliary control method comprising torque control |
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