CN111878311A - Braking logic reconstruction circuit suitable for wind generating set - Google Patents
Braking logic reconstruction circuit suitable for wind generating set Download PDFInfo
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- CN111878311A CN111878311A CN202010896149.8A CN202010896149A CN111878311A CN 111878311 A CN111878311 A CN 111878311A CN 202010896149 A CN202010896149 A CN 202010896149A CN 111878311 A CN111878311 A CN 111878311A
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- 230000001960 triggered effect Effects 0.000 claims description 10
- 230000009466 transformation Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0204—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0244—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0264—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for stopping; controlling in emergency situations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
- F03D7/043—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic
- F03D7/046—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic with learning or adaptive control, e.g. self-tuning, fuzzy logic or neural network
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/329—Azimuth or yaw angle
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Artificial Intelligence (AREA)
- Evolutionary Computation (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Software Systems (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention provides a brake logic reconstruction circuit suitable for a wind generating set. The system comprises: after the pins 11 and 14 of the hardware safety relay contact are connected with the pins 11 and 14 of the software safety relay in series, the hardware safety relay contact and the pins 14 of the software safety relay together with the newly added parallel branch 1 control the on-off of the high-speed brake electromagnetic valve of the unit; the on-off of a yaw brake solenoid valve is controlled by the feet 11 and 14 of the yaw brake relay and the newly added parallel branch 2 together; and pins 11 and 14 of the left yaw relay contact are connected with the newly added parallel branch 3 in parallel to control the power on and power off of the left yaw relay coil together. The braking logic transformation circuit suitable for the wind generating set, provided by the invention, has the advantages that air braking, crosswind yaw backup and mechanical braking assistance are preferentially carried out when the set is stopped, so that the friction fire of a braking system caused by excessive investment of the braking system is avoided to a certain extent, and the reduction of the rotating speed of the set in an overspeed state is ensured to the maximum extent.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a brake logic reconstruction circuit suitable for a wind generating set.
Background
The G58 unit adopts a variable-pitch variable-speed double-fed asynchronous power generation technical route, and two schemes of air braking of synchronous variable pitch of three blades and mechanical braking of a high-speed shaft ensure that the unit is stopped reliably. When the emergency shutdown is carried out, the two sets of braking systems act simultaneously, once air braking fails, the mechanical braking action is only used, so that the friction ignition of the braking systems is easily caused at a high rotating speed, and large impact is easily generated on mechanical parts of transmission chains such as a gear box and the like, and further, accidents such as unit ignition, tower collapse and the like are caused. How to effectively avoid or reduce the fire and tower collapse accidents of the unit, prolong the service life of a transmission chain and improve the overall safety performance of the unit is very important.
Disclosure of Invention
The invention aims to solve the technical problem of providing a braking logic transformation circuit suitable for a wind generating set, and realizing a three-level shutdown protection strategy of air braking priority, crosswind yaw backup and mechanical braking assistance.
In order to solve the technical problem, the invention provides a brake logic reconstruction circuit suitable for a wind generating set, and the system comprises: the high-speed shaft brake control circuit is characterized in that after the contacts 11 and 14 of a hardware safety relay KJ5 are connected with the contacts 11 and 14 of a software safety relay KR211 in series, the high-speed shaft brake control circuit and a newly added parallel branch 1 jointly control the on-off of a high-speed brake electromagnetic valve of a unit, and the newly added parallel branch 1 is formed by connecting the contacts 9 and 10 of an overspeed relay KJ1 in series with the contacts 11 and 14 of an emergency stop relay KJ2 in series; the yaw brake control circuit controls the on-off of a yaw brake solenoid valve D173 by the contact points 11 and 14 of a yaw brake relay KR173 and a newly added parallel branch 2, and the newly added parallel branch 2 is formed by connecting the contact points 11 and 14 of an overspeed relay KJ1 and the contact points 9 and 1 of a time relay KT in series; left driftage action circuit, by left driftage relay contact 11, 14 foot and newly-increased parallel branch 3 parallelly connected back common control left driftage relay KM180 coil get electric and lose electric, newly-increased parallel branch 3 is driftage overtime relay KJ4 contact 21, 24 foot, the on-off control circuit of driftage overtime relay contact 21, 24 foot includes, overspeed relay KJ4 contact 31, 34 foot and time relay KT coil series connection ground connection, driftage overtime relay KJ4 contact 3, 4 feet and relay KT contact 4, 12 feet, driftage overtime relay KMOO4 coil series connection ground connection.
In some embodiments, before the newly added parallel branch 1 is introduced, when the unit normally generates power, the hardware safety relay KJ5 contacts 11 and 14 pins and the software safety relay KR211 contacts 11 and 14 pins are in a closed state, the coil of the brake solenoid valve DZ11 is in an electrified state, and the high-speed shaft brake is not put into operation; when the unit reports a fault, the software safety chain or the hardware safety chain is disconnected, the corresponding safety relay KJ5 or KR211 contact is disconnected, the brake electromagnetic valve is powered off, and the high-speed shaft is braked; after a newly added parallel branch 1 is introduced, when a unit reports a fault: 1) if the unit does not detect the overspeed fault, the contact 9 and the contact 10 of the overspeed relay KJ1 are in a disconnected state, the brake electromagnetic valve is in a power-off state, and the high-speed shaft is braked and put into operation; 2) if the unit detects an overspeed fault and the emergency stop relay is not triggered, the brake electromagnetic valve is in an electrified state, and the high-speed shaft brake is not put into use; 3) if the emergency stop button is triggered, the contact 11 and 14 pins of the emergency stop relay KJ2 are in an off state, the brake electromagnetic valve is in a power-off state, and the high-speed shaft is braked.
In some embodiments, before the newly added parallel branch 2 is introduced, when the master control PLC controller sends a yaw allowing instruction, the coil of the yaw brake relay KR173 is energized, the contacts 11 and 14 are closed, the yaw brake solenoid valve is in an energized state, and the yaw caliper is released to allow yaw; after the newly-added parallel branch 2 is introduced, when the master control PLC controller does not send out a yaw allowing instruction: 1) when the unit detects overspeed fault and the yaw is not overtime, the contact 11 and 14 pins of the overspeed relay KJ4 are closed, the normally closed contact 1 and 9 pins of the time relay KT are closed, and the yaw brake electromagnetic valve is in an electrified state to allow the yaw; 2) when the yawing is overtime, the normally closed contacts 1 and 9 of the time relay are disconnected, the yawing brake electromagnetic valve is in a power-off state, and the yawing calipers are locked without allowing yawing.
In some embodiments, before the newly added parallel branch 3 is introduced, when the master PLC controller sends a left yaw instruction, the coil of the left yaw relay KR180 is powered on, the pins 11 and 14 are powered on, the coil of the left yaw relay KM180 is powered on, and the yaw system starts to yaw. The contact of the right yaw relay KM181 is in a normally closed state, and mainly acts to prevent simultaneous actions of left and right yaw; after a newly added parallel branch 3 is introduced, when a master control PLC controller does not send a left yaw instruction, 1) when a unit detects an overspeed fault, pins 31 and 34 of contacts KJ4 of an overspeed relay are also closed, a coil of a time relay KT is electrified, timing is started, pins 1, 9, 4 and 12 of the contact of the time relay KT are in a normally closed state, a coil of a yaw overtime relay KM004 is electrified, pins 21 and 24 are closed, a coil of a left yaw relay is electrified, and a yaw system starts to perform left-biased action; 2) when the timing time exceeds 180s, the pins of the KT contacts of the time relay are in an open state, or when the unit does not detect an overspeed state, the pins of the KJ4 contacts 31 and 34 of the overspeed relay are in an open state, a left yaw relay coil is in a power-off state, and the yaw system stops left-side bias action.
In some embodiments, after the emergency stop button is manually triggered in an emergency, the mechanical brake is put in, the original air brake of the unit is also put in at the same time, and the mechanical brake can be put in after the rotating speed is reduced and a set value is set when the other units break down.
In some embodiments, when the unit needs to be shut down, the original air braking protection action of the unit is adopted, when the rotating speed of the unit is still overspeed, the crosswind yaw protection is put into use, and when the rotating speed of the unit is reduced to a set overspeed value, the mechanical brake stable braking system is put into use.
After adopting such design, the invention has at least the following advantages:
according to the braking logic reconstruction circuit suitable for the wind generating set, when an emergency stop button is manually triggered in an emergency, air braking and mechanical braking can be simultaneously started, and when other units are in emergency stop failure, the mechanical braking can be started after the rotating speed is reduced and a set value is set. And an automatic crosswind yawing function is added, when the unit is overspeed due to failure of control braking, the unit starts automatic yawing, and after the rotating speed is reduced to a set value, mechanical braking is performed. When the unit needs to be shut down, a stable braking system with air braking priority, crosswind yaw backup and mechanical braking assistance is adopted.
Drawings
The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.
FIG. 1 is a high speed shaft brake control circuit suitable for use with the present invention;
FIG. 2 is a yaw brake control circuit suitable for use with the present invention;
fig. 3 shows a left yaw operation circuit to which the present invention is applied.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The utility model provides a break-make of unit high speed brake solenoid valve is controlled with newly-increased parallelly connected branch road 1 jointly to the back is established ties with software safety relay KR211 contact 11, 14 foot to the braking logic transformation circuit suitable for G58 unit, hardware safety relay KJ5 contact 11, 14 foot, forms high-speed shaft brake control circuit. The newly added parallel branch 1 is formed by connecting pins 9 and 10 of a contact point of an overspeed relay KJ1 in series with pins 11 and 14 of a contact point of an emergency stop relay KJ 2.
The contact 11 and the contact 14 of the yaw brake relay KR173 and the newly added parallel branch 2 jointly control the on-off of the yaw brake solenoid valve D173 to form a yaw brake control circuit. The newly added parallel branch 2 is formed by connecting pins 11 and 14 of a contact KJ1 of an over-speed relay and pins 9 and 1 of a contact KT of a time relay in series.
The left yawing relay contact 11 and the pin 14 are connected in parallel with the newly added parallel branch 3 to jointly control the power on and power off of the coil of the left yawing relay KM180, so that a left yawing action circuit is formed. The newly added parallel branch 3 is a yaw overtime relay KJ4 contact 21 and a 24 pin. The on-off control circuit of driftage time-out relay contact 21, 24 feet includes, overspeed relay KJ4 contact 31, 34 feet and time relay KT coil series connection ground connection, and driftage time-out relay KJ4 contact 3, 4 feet and relay KT contact 4, 12 feet, driftage time-out relay KMOO4 coil series connection ground connection.
Further, before a newly added parallel branch 1 is introduced, when the unit normally generates power, the hardware safety relay KJ5 contacts 11 and 14 and the software safety relay KR211 contacts 11 and 14 are in a closed state, the coil of the brake solenoid valve DZ11 is in a power-on state, and the high-speed shaft brake is not put into operation, as shown in fig. 1. When the unit reports faults, the software safety chain or the hardware safety chain is disconnected, the corresponding safety relay KJ5 or KR211 contact is disconnected, the brake electromagnetic valve is powered off, and the high-speed shaft brake is put into use. After a newly added parallel branch 1 is introduced, when a unit reports a fault: 1) if the unit does not detect an overspeed fault (1100r/min), the contact 9 and the contact 10 of the overspeed relay KJ1 are in a disconnected state, the brake electromagnetic valve is in a power-off state, and the high-speed shaft is braked and put into operation; 2) if the unit detects an overspeed fault and the emergency stop relay is not triggered, the brake electromagnetic valve is in an electrified state, and the high-speed shaft brake is not put into use; 3) if the emergency stop button is triggered, the contact 11 and 14 pins of the emergency stop relay KJ2 are in an off state, the brake electromagnetic valve is in a power-off state, and the high-speed shaft is braked.
Further, as shown in fig. 2, before the newly added parallel branch 2 is introduced, when the master control PLC controller sends a command allowing yaw, the coil of the yaw brake relay KR173 is energized, the contacts 11 and 14 are closed, the yaw brake solenoid valve is in an energized state, and the yaw caliper is released to allow yaw. After the newly-added parallel branch 2 is introduced, when the master control PLC controller does not send out a yaw allowing instruction: 1) when the unit detects an overspeed fault (1800r/min) and the yawing is not overtime, the contact 11 and 14 pins of an overspeed relay KJ4 are closed, the contact 1 and 9 pins of a time relay KT normally closed contact are closed, and the yawing brake electromagnetic valve is in an electrified state to allow yawing; 2) when the yawing is overtime, the normally closed contacts 1 and 9 of the time relay are disconnected, the yawing brake electromagnetic valve is in a power-off state, and the yawing calipers are locked without allowing yawing.
Further, before the newly added parallel branch circuit 3 is introduced, as shown in fig. 3, when the master control PLC controller sends a left yaw instruction, the coil of the left yaw relay KR180 is powered on, the pins 11 and 14 are powered on, the coil of the left yaw relay KM180 is powered on, and the yaw system starts yawing. The contact of the right yaw relay KM181 is in a normally closed state, and the right yaw relay KM mainly acts to prevent the left yaw and the right yaw from acting simultaneously. After a newly added parallel branch 3 is introduced, when a master control PLC does not send a left yaw instruction, 1) when the unit detects an overspeed fault, the contacts 31 and 34 of the overspeed relay KJ4 are also closed, the coil of the time relay KT is electrified, timing is started, the contacts 1, 9, 4 and 12 of the time relay KT are in a normally closed state, the coil of the yaw overtime relay KM004 is electrified, the contacts 21 and 24 are closed, the coil of the left yaw relay is electrified, and a yaw system starts to perform left-yaw action. 2) When the timing time exceeds 180s, the pins of the KT contacts of the time relay are in an open state, or when the unit does not detect an overspeed state, the pins of the KJ4 contacts 31 and 34 of the overspeed relay are in an open state, a left yaw relay coil is in a power-off state, and the yaw system stops left-side bias action.
Furthermore, after the emergency stop button is manually triggered in an emergency situation, the high-speed shaft brake control circuit puts in the mechanical brake, the original air brake of the unit is put in at the same time, and the mechanical brake can be put in after the rotating speed is reduced and a set value is set when other units break down suddenly.
Further, the braking logic transformation circuit suitable for the G58 unit adopts the original air braking protection action of the unit when the unit needs to be shut down, the crosswind yaw protection is put into use when the rotating speed of the unit is still overspeed (not less than 1800r/min), and the mechanical braking stable braking system is put into use when the rotating speed of the unit is reduced to a set overspeed value (1100 r/min). The three-level shutdown protection strategy of air braking priority, crosswind yaw backup and mechanical braking assistance is realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the above description of the present invention can be applied to various modifications, equivalent variations or modifications without departing from the spirit and scope of the present invention.
Claims (6)
1. A brake logic reconstruction circuit suitable for a wind generating set, comprising:
the high-speed shaft brake control circuit is characterized in that after the contacts 11 and 14 of a hardware safety relay KJ5 are connected with the contacts 11 and 14 of a software safety relay KR211 in series, the high-speed shaft brake control circuit and a newly added parallel branch 1 jointly control the on-off of a high-speed brake electromagnetic valve of a unit, and the newly added parallel branch 1 is formed by connecting the contacts 9 and 10 of an overspeed relay KJ1 in series with the contacts 11 and 14 of an emergency stop relay KJ2 in series;
the yaw brake control circuit controls the on-off of a yaw brake solenoid valve D173 by the contact points 11 and 14 of a yaw brake relay KR173 and a newly added parallel branch 2, and the newly added parallel branch 2 is formed by connecting the contact points 11 and 14 of an overspeed relay KJ1 and the contact points 9 and 1 of a time relay KT in series;
left driftage action circuit, by left driftage relay contact 11, 14 foot and newly-increased parallel branch 3 parallelly connected back common control left driftage relay KM180 coil get electric and lose electric, newly-increased parallel branch 3 is driftage overtime relay KJ4 contact 21, 24 foot, the on-off control circuit of driftage overtime relay contact 21, 24 foot includes, overspeed relay KJ4 contact 31, 34 foot and time relay KT coil series connection ground connection, driftage overtime relay KJ4 contact 3, 4 feet and relay KT contact 4, 12 feet, driftage overtime relay KMOO4 coil series connection ground connection.
2. The braking logic reconstruction circuit suitable for the wind generating set according to claim 1, wherein before the newly added parallel branch 1 is introduced, when the set normally generates power, the hardware safety relay KJ5 contacts 11 and 14 pins and the software safety relay KR211 contacts 11 and 14 pins are in a closed state, the coil of the braking electromagnetic valve DZ11 is in a power-on state, and the high-speed shaft brake is not put into use; when the unit reports a fault, the software safety chain or the hardware safety chain is disconnected, the corresponding safety relay KJ5 or KR211 contact is disconnected, the brake electromagnetic valve is powered off, and the high-speed shaft is braked; after a newly added parallel branch 1 is introduced, when a unit reports a fault: 1) if the unit does not detect the overspeed fault, the contact 9 and the contact 10 of the overspeed relay KJ1 are in a disconnected state, the brake electromagnetic valve is in a power-off state, and the high-speed shaft is braked and put into operation; 2) if the unit detects an overspeed fault and the emergency stop relay is not triggered, the brake electromagnetic valve is in an electrified state, and the high-speed shaft brake is not put into use; 3) if the emergency stop button is triggered, the contact 11 and 14 pins of the emergency stop relay KJ2 are in an off state, the brake electromagnetic valve is in a power-off state, and the high-speed shaft is braked.
3. The braking logic reconstruction circuit suitable for the wind generating set according to claim 1, wherein before the newly added parallel branch 2 is introduced, when the master control PLC controller sends out a command allowing yaw, the coil of the yaw braking relay KR173 is energized, the contacts 11 and 14 are closed, the yaw braking solenoid valve is in an energized state, and the yaw caliper is released to allow yaw; after the newly-added parallel branch 2 is introduced, when the master control PLC controller does not send out a yaw allowing instruction: 1) when the unit detects overspeed fault and the yaw is not overtime, the contact 11 and 14 pins of the overspeed relay KJ4 are closed, the normally closed contact 1 and 9 pins of the time relay KT are closed, and the yaw brake electromagnetic valve is in an electrified state to allow the yaw; 2) when the yawing is overtime, the normally closed contacts 1 and 9 of the time relay are disconnected, the yawing brake electromagnetic valve is in a power-off state, and the yawing calipers are locked without allowing yawing.
4. The braking logic reconstruction circuit applicable to the wind generating set according to claim 1, wherein before the new parallel branch 3 is introduced, when the master control PLC controller sends a left yaw command, the coil of the left yaw relay KR180 is powered, the pins 11 and 14 are powered, the coil of the left yaw relay KM180 is powered, and the yaw system starts to yaw. The contact of the right yaw relay KM181 is in a normally closed state, and mainly acts to prevent simultaneous actions of left and right yaw; after a newly added parallel branch 3 is introduced, when a master control PLC controller does not send a left yaw instruction, 1) when a unit detects an overspeed fault, pins 31 and 34 of contacts KJ4 of an overspeed relay are also closed, a coil of a time relay KT is electrified, timing is started, pins 1, 9, 4 and 12 of the contact of the time relay KT are in a normally closed state, a coil of a yaw overtime relay KM004 is electrified, pins 21 and 24 are closed, a coil of a left yaw relay is electrified, and a yaw system starts to perform left-biased action; 2) when the timing time exceeds 180s, the pins of the KT contacts of the time relay are in an open state, or when the unit does not detect an overspeed state, the pins of the KJ4 contacts 31 and 34 of the overspeed relay are in an open state, a left yaw relay coil is in a power-off state, and the yaw system stops left-side bias action.
5. The braking logic reconstruction circuit for the wind generating set according to claim 1, wherein after the emergency button is manually triggered in an emergency, the mechanical brake is activated, the original air brake of the wind generating set is activated at the same time, and the mechanical brake is activated after the rotational speed is reduced and the set value is reached when the emergency stop of the other wind generating sets fails.
6. The braking logic reconstruction circuit suitable for the wind generating set according to claim 1, wherein when the set needs to be shut down, the original air braking protection action of the set is adopted, when the rotating speed of the set is still overspeed, the crosswind yaw protection is put into use, and when the rotating speed of the set is reduced to a set overspeed value, the mechanical braking smooth braking system is put into use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010896149.8A CN111878311A (en) | 2020-08-31 | 2020-08-31 | Braking logic reconstruction circuit suitable for wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010896149.8A CN111878311A (en) | 2020-08-31 | 2020-08-31 | Braking logic reconstruction circuit suitable for wind generating set |
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| Publication Number | Publication Date |
|---|---|
| CN111878311A true CN111878311A (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010896149.8A Pending CN111878311A (en) | 2020-08-31 | 2020-08-31 | Braking logic reconstruction circuit suitable for wind generating set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036825A (en) * | 2021-03-16 | 2021-06-25 | 天津航空机电有限公司 | High-reliability load power distribution control circuit |
| CN117989256A (en) * | 2024-04-07 | 2024-05-07 | 广东省能源集团贵州有限公司江苏分公司 | Electromagnetic brake control circuit applied to yaw system of wind turbine generator |
-
2020
- 2020-08-31 CN CN202010896149.8A patent/CN111878311A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036825A (en) * | 2021-03-16 | 2021-06-25 | 天津航空机电有限公司 | High-reliability load power distribution control circuit |
| CN117989256A (en) * | 2024-04-07 | 2024-05-07 | 广东省能源集团贵州有限公司江苏分公司 | Electromagnetic brake control circuit applied to yaw system of wind turbine generator |
| CN117989256B (en) * | 2024-04-07 | 2024-06-14 | 广东省能源集团贵州有限公司江苏分公司 | Electromagnetic brake control circuit applied to yaw system of wind turbine generator |
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