CN113339184A - Active power control device and processing method for speed regulator of giant hydroelectric generating set - Google Patents
Active power control device and processing method for speed regulator of giant hydroelectric generating set Download PDFInfo
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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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
- F03B15/16—Regulating, i.e. acting automatically by power output
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The active power control device of the giant hydroelectric generating set speed regulator comprises a set of PLC controllers A, a set of PLC controllers B, a set of power transmitters A and a set of power transmitters B, wherein the set of power transmitters A and the set of power transmitters B are respectively connected with the input ends of the PLC controllers A and the PLC controllers B, and the input ends of the PLC controllers A and the PLC controllers B are electrically connected with a set of power transmitters C. By adopting a three-out-of-two comparison analysis method for the numerical values of the three sets of power transmitters, the active power value fault judgment and processing logic is optimized, the active power fault of the speed regulator can be automatically diagnosed in real time, active power warning and serious fault signal judgment are realized, the occurrence rate of single sensor element fault and active power serious fault is reduced, the redundant configuration of the active power transmitter of the speed regulator is realized, and the redundancy and reliability of active power acquisition signals are improved.
Description
Technical Field
The invention relates to the field of parameter adjustment of a speed regulator of a water turbine, in particular to an active power control device and a processing method of the speed regulator of a giant water turbine generator set.
Background
Active power is one of main parameters for controlling the speed regulator of the water turbine, and the stability and the reliability of a sampling value directly influence the safe and stable operation of a unit. Therefore, the active power monitoring of the speed regulator is very necessary and requires reliability and accuracy.
At present, only one set of power transmitter is configured on a speed regulator, two sets of PLC controllers share one active power signal, signals cannot be mutually acquired between the two sets of controllers, third-party data is not available for judgment, comparison and analysis, the values of sensors acquired by the controllers are respectively judged to be used as control parameters or fault judgment values, the control strategy is single, the data of the two sets of sensors cannot be fully utilized, the real data acquired by the sensors cannot be really judged, and meanwhile fault judgment cannot be really carried out.
Disclosure of Invention
The invention aims to provide an active power control device and a processing method for a speed regulator of a giant hydroelectric generating set, so that the redundancy and the reliability of active power acquisition signals are improved, and an active power logic calculation algorithm is optimized.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the active power control device of the speed regulator of the giant hydroelectric generating set comprises an A set of PLC, a B set of PLC, an A set of power transmitter and a B set of power transmitter, wherein the A set of power transmitter and the B set of power transmitter are respectively connected with the input ends of the A set of PLC and the B set of PLC, and the input ends of the A set of PLC and the B set of PLC are electrically connected with a C set of power transmitter.
The A set of power transmitter, the B set of power transmitter and the C set of power transmitter are respectively connected with the A set of isolation transmitter, the B set of isolation transmitter and the C set of isolation transmitter, and the A set of PLC controller and the B set of PLC controller receive active power signals of the A set of power transmitter, the B set of power transmitter and the C set of power transmitter through the A set of isolation transmitter, the B set of isolation transmitter and the C set of isolation transmitter.
The signal processing method of the active power control device of the giant hydroelectric generating set speed regulator is used, the set A of PLC controllers and the set B of PLC controllers are respectively used as a main controller and a standby controller of the speed regulator to collect data of three sets of power transmitters in real time, the set A of power transmitters independently transmit detected active power to the set A of PLC controllers through the set A of isolation transmitters and are marked as A1 to serve as a main sensing numerical value of the set A of PLC controllers, the set B of power transmitters independently transmit detected active power to the set B of PLC controllers through the set B of isolation transmitters and are marked as B1 to serve as a main sensing numerical value of the set B of PLC controllers, the set C of power transmitters independently transmit one part of detected active power to the set A of PLC controllers through the set C of isolation transmitters and are marked as A2 and B2 respectively, the set A of PLC controllers read active power value detected by the set B of power transmitters of the set B of PLC controllers through a communication mode and are marked as A3, the B set of PLC controller reads the active power value detected by the A set of power transmitter of the A set of PLC controller in a communication mode and records the active power value as B3, and the A1, A2, A3, B1, B2 and B3 are compared by a difference value calculation method and then the optimal value of the active power of the speed regulator is selected by a two-out-of-three calculation mode, so that the data loss caused by a certain fault is avoided.
The active power processing method of the speed regulator of the giant hydroelectric generating set comprises the following specific processing steps:
step1, judging whether the three sets of power transmitters have numerical value jump or disconnection fault through the data values, if the judgment result is fault, sequentially judging whether the set A of power transmitters, the set B of power transmitters and the set C of power transmitters have fault one by one, and preferentially selecting the detection numerical value of the power transmitter without fault, wherein the selection principle is as follows: when the A set of power transmitter has no fault, the A set of power transmitter value is preferably selected; if the A set of power transmitter has faults and the B set of power transmitter has no faults, the value of the B set of power transmitter is preferentially selected; if the A set of power transmitter and the B set of power transmitter have faults, selecting the numerical value of the C set of power transmitter; if A, B, C sets of power transmitters have faults, the active power of the set A of PLC controllers has limited use of the current sampling value of the main power transmitter, and sends out a serious fault alarm of the active power, and the main controller is switched to the standby set B of PLC controllers; if the judgment result shows that the three sets of power transmitters have no fault, entering Step;
step2, calculating absolute values by mutually taking difference values of the numerical values of the three sets of power transmitters, judging active power faults, and if the threshold value of the allowed deviation percentage value set by the system is delta P, comparing the received 3 sets of numerical values by the A set of PLC controllers, if 2| A1-A2|/A1+ A2< deltaP, 2| A1-A3|/A1+ A3< deltaP and 2| A2-A3|/A2+ A3< deltaP, the deviation values of the three sets of power transmitters are normal, and selecting the numerical value A1 of the A set of power transmitters; if 2| A1-A2|/A1+ A2> Δ P or 2| A1-A3|/A1+ A3> Δ P or 2| A2-A3|/A2+ A3> Δ P indicates that at least one of the deviation values of the three sets of power transmitters has overlarge acquisition deviation, an active power warning fault is reported; if 2| A1-A2|/A1+ A2 >. DELTA.P and 2| A1-A3|/A1+ A3 >. DELTA.P and 2| A2-A3|/A2+ A3 >. DELTA.P indicate that the deviation values of the three sets of power transmitters are overlarge, the active power serious fault is reported, the set A PLC controller selects the current sampling value Pa = A1 of the main power transmitter, switches the controller to the standby set B PLC controller, and selects B1, B2 and B3 to continue to select the active power numerical value according to the operation of the step;
step3, judging that the acquired value A1 of the A set of power transmitter is abnormal if 2| A1-A2|/A1+ A2> delta P and 2| A1-A3|/A1+ A3> delta P, judging that the acquired value A2 of the C set of power transmitter is abnormal if 2| A1-A2|/A1+ A2> delta P and 2| A2-A3|/A2+ A3> -delta P, and judging that the acquired value A3 of the B set of power transmitter is abnormal if 2| A2-A3|/A2+ A3> -delta P and 2| A1-A3|/A1+ A3> -delta P;
and Step4, further judging and selecting active power data according to the processing result of the abnormal judgment logic of the power transmitter.
The specific process of Step4 is as follows:
step4.1, when the collection of the set A of power transmitters is abnormal and the set A of power transmitters has no fault, selecting a set A of power transmitter collection value Pa = A1, if the set A of power transmitters has a fault and the set B of power transmitters has no fault, preferentially selecting a set B of power transmitter collection value Pa = A3, if the set A of power transmitters and the set B of power transmitters have faults, preferentially selecting a set C of power transmitter collection value Pa = A2, and if the set A of power transmitters, the set B of power transmitters and the set C of power transmitters have faults, selecting a current sampling value of a main power transmitter as active power of the set A of PLC controller, and switching the controller to a standby set B of PLC controller;
step4.2, when the collection of the A set of power transmitter is abnormal and the collection of the B set of power transmitter is abnormal, if the B set of power transmitter has no fault, the collection value Pa = A3 of the B set of power transmitter is selected, if the B set of power transmitter has fault and the C set of power transmitter has no fault, the collection value Pa = A2 of the C set of power transmitter is selected, if the B set of power transmitter and the C set of power transmitter have faults, the A set of PLC controller selects the current sampling value of the main power transmitter and switches the controller to the standby B set of PLC controller;
step4.3, when the collection of the A set of power transmitter is abnormal and the collection of the B set of power transmitter is abnormal, if the collection of the C set of power transmitter is not abnormal and the C set of power transmitter is not in fault, selecting the collection value Pa = A2 of the C set of power transmitter, if the collection of the C set of power transmitter is abnormal or the C set of power transmitter is in fault, selecting the data of the main power transmitter, and switching the controller to the standby B set of PLC controller.
The active power control device and the processing method of the speed regulator of the giant hydroelectric generating set provided by the invention realize the redundant configuration of the active power transmitter of the speed regulator, improve the redundancy and the reliability of active power acquisition signals, optimize the fault judgment and processing logic of active power values by adopting a three-out-of-two comparison analysis method for the numerical values of three sets of power transmitters, automatically diagnose the active power fault of the speed regulator in real time, realize the active power warning and the judgment of serious fault signals, and reduce the fault rate of a single sensor element and the serious fault rate of the active power.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic diagram of the configuration of the active power control of the governor of a hydraulic turbine according to the present invention;
fig. 2 is a logic diagram of the active power processing of the governor of the hydraulic turbine.
Wherein: a set of PLC controller 1, B set of PLC controller 2, A set of isolation transmitter 3, B set of isolation transmitter 4, C set of isolation transmitter 5, switch 6, A set of power transmitter 7, B set of power transmitter 8 and C set of power transmitter 9.
Detailed Description
The technical scheme of the invention is explained in detail in the following by combining the drawings and the embodiment.
As shown in fig. 1, the active power control device of the giant hydroelectric generating set speed regulator comprises a set of PLC controllers 1 and a set of PLC controllers 2, and a set of power transmitters 7 and a set of power transmitters 8 which are respectively connected with the input ends of the PLC controllers 1 and 2, wherein the input ends of the PLC controllers 1 and 2 are electrically connected with a set of power transmitters 9.
The A set of power transmitter 7, the B set of power transmitter 8 and the C set of power transmitter 9 are respectively connected with the A set of isolation transmitter 3, the B set of isolation transmitter 4 and the C set of isolation transmitter 5, and the A set of PLC controller 1 and the B set of PLC controller 2 receive active power signals of the A set of power transmitter 7, the B set of power transmitter 8 and the C set of power transmitter 9 through the A set of isolation transmitter 3, the B set of isolation transmitter 4 and the C set of isolation transmitter 5.
Three sets of power transmitters and three sets of isolation transmitters, 2 sets of power transmitters are configured on the speed regulator electrical cabinet, 1 set of power transmitter is configured on the LCU electrical cabinet, the three sets of isolation transmitters are all installed in the speed regulator electrical cabinet, and collected signals are respectively sent to the double sets of controllers of the speed regulator.
Through 3 actual measurement's active power value and 2 way PLC controllers, can carry out self-checking and cross comparison to the power transmitter numerical value of current sampling, avoid appearing the trouble all the way and lead to total data distortion, arouse the accumulative effect to lead to the hydraulic turbine maladjustment.
As shown in fig. 2, in the signal processing method using the active power control device of the giant hydroelectric generating set speed regulator, the set a of PLC controller 1 and the set B of PLC controller 2 are respectively used as a master controller and a standby controller of the speed regulator to collect data of three sets of power transmitters in real time, the set a of power transmitter 7 independently transmits the detected active power to the set a of PLC controller 1 through the set a of isolation transmitter 3 and records as a1, the set a of PLC controller 1 is used as a master sensing value of the set a of PLC controller 1, the set B of power transmitter 8 independently transmits the detected active power to the set B of PLC controller 2 through the set B of isolation transmitter 4 and records as a1, the set B of PLC controller 2 is used as a master sensing value of the set B of PLC controller 2, the set C of power transmitter 9 transmits the detected active power to the set a set of PLC controller 1 in two parts through the set C of isolation transmitter 5, and the set B of PLC controller 2 is respectively recorded as a2, B2, the active power value detected by the B set of power transmitter 8 of the B set of PLC controller 2 is read by the A set of PLC controller 1 through a communication mode is recorded as A3, the active power value detected by the A set of power transmitter 7 of the B set of PLC controller 1 is read by the B set of PLC controller 2 through a communication mode is recorded as B3, the optimal value of the active power of the speed regulator is selected through a two-out-of-three calculation mode after the A1, the A2, the A3, the B1, the B2 and the B3 are compared through a difference value calculation method, and data loss caused by a certain fault is avoided.
As shown in fig. 2, the active power processing method of the speed regulator of the giant water turbine generator set comprises the following specific steps:
step1, judging whether the three sets of power transmitters have numerical value jump or disconnection fault through the data values, if the judgment result is fault, sequentially judging whether the set A of power transmitters 7, the set B of power transmitters 8 and the set C of power transmitters 9 have fault one by one, and preferentially selecting the detection numerical value of the power transmitter without fault, wherein the selection principle is as follows: when the A set of power transmitter 7 has no fault, the A set of power transmitter 7 is preferentially selected; if the A set of power transmitter 7 has a fault and the B set of power transmitter 8 has no fault, the B set of power transmitter 8 is preferentially selected; if the A set of power transmitter and the B set of power transmitter have faults, selecting the value of the C set of power transmitter 9; if A, B, C sets of power transmitters have faults, the active power of the set A of PLC controllers 1 has limited use of the current sampling value of the main power transmitter, and sends out a serious fault alarm of the active power, and the main controller is switched to the standby set B of PLC controllers 2; if the judgment result shows that the three sets of power transmitters have no fault, entering Step 2;
the numerical values of the Step2 and the three sets of power transmitters are mutually differenced to calculate absolute values and make active power fault judgment, assuming that the threshold of allowable deviation percentage value set by the system is delta P, the set A PLC controller 1 compares the received 3 sets of numerical values, if 2| A1-A2|/A1+ A2< deltaP and 2| A1-A3|/A1+ A3< deltaP and 2| A2-A3|/A2+ A3< deltaP, the deviation values of the three sets of power transmitters are normal, and the set A power transmitter 7 numerical value A1 is selected; if 2| A1-A2|/A1+ A2> Δ P or 2| A1-A3|/A1+ A3> Δ P or 2| A2-A3|/A2+ A3> Δ P indicates that at least one of the deviation values of the three sets of power transmitters has overlarge acquisition deviation, an active power warning fault is reported; if 2| A1-A2|/A1+ A2 >. DELTA.P and 2| A1-A3|/A1+ A3 >. DELTA.P and 2| A2-A3|/A2+ A3 >. DELTA.P indicate that the deviation values of the three sets of power transmitters are overlarge, the active power serious fault is reported, the set A PLC controller 1 selects the current sampling value Pa = A1 of the main power transmitter, and simultaneously switches the controller to the standby set B PLC controller 2, and selects B1, B2 and B3 to continue to operate and select the active power value according to the step;
step3, judging that the acquired value A1 of the power transmitter set A7 is abnormal if 2| A1-A2|/A1+ A2> delta P and 2| A1-A3|/A1+ A3> delta P, judging that the acquired value A2 of the power transmitter set C is abnormal if 2| A1-A2|/A1+ A2> delta P and 2| A2-A3|/A2+ A3> delta P, and judging that the acquired value A3 of the power transmitter set B8 is abnormal if 2| A2-A3|/A2+ A3 delta > P and 2| A1-A3|/A1+ A3> -delta P;
and Step4, further judging and selecting active power data according to the processing result of the abnormal judgment logic of the power transmitter.
The specific process of Step4 is as follows:
step4.1, when the collection of the set A of power transmitters 7 is abnormal and the set A of power transmitters 7 has no fault, selecting a collection value Pa = A1 of the set A of power transmitters 7, preferentially selecting a collection value Pa = A3 of the set B of power transmitters 8 if the set A of power transmitters 7 has a fault and the set B of power transmitters 8 has no fault, preferentially selecting a collection value Pa = A2 of the set C of power transmitters 9 if the set A of power transmitters 7 and the set B of power transmitters 8 have faults, and selecting a current sampling value of a main power transmitter for the active power of the set A of PLC controller 1 and switching the controller to a standby set B of PLC controller 2 if the set A of power transmitters 7, the set B of power transmitters 8 and the set C of power transmitters 9 have faults;
step4.2, when the A set of power transmitter 7 acquires abnormity and the B set of power transmitter 8 acquires abnormity, if the B set of power transmitter 8 has no fault, selecting a collection value Pa = A3 of the B set of power transmitter 8, if the B set of power transmitter 8 has fault and the C set of power transmitter 9 has no fault, selecting a collection value Pa = A2 of the C set of power transmitter 9, and if the B set of power transmitter 8 and the C set of power transmitter 9 both have faults, selecting a current sampling value of a main power transmitter by the A set of PLC controller 1, and switching the controller to the standby B set of PLC controller 2;
step4.3, when the collection of the set A of power transmitters 7 is abnormal and the collection of the set B of power transmitters 8 is abnormal, if the collection of the set C of power transmitters 9 is abnormal and the set C of power transmitters 9 has no fault, selecting the collection value Pa = A2 of the set C of power transmitters 9, and if the collection of the set C of power transmitters 9 is abnormal or the set C of power transmitters 9 has a fault, selecting the data of the main power transmitter and switching the controller to the standby set B of PLC controllers 2.
Claims (5)
1. The active power control device of the speed regulator of the giant hydroelectric generating set is characterized by comprising an A set of PLC (1), a B set of PLC (2) and an A set of power transmitter (7) and a B set of power transmitter (8) which are respectively connected with the input ends of the A set of PLC controller and the B set of PLC controller, wherein the input ends of the A set of PLC controller (1) and the B set of PLC controller (2) are electrically connected with a C set of power transmitter (9).
2. The active power control device of the giant hydroelectric generating set speed regulator according to claim 1, wherein the A set of power transmitter (7), the B set of power transmitter (8) and the C set of power transmitter (9) are respectively connected with the A set of isolation transmitter (3), the B set of isolation transmitter (4) and the C set of isolation transmitter (5), and the A set of PLC controller (1) and the B set of PLC controller (2) receive active power signals of the A set of power transmitter (7), the B set of power transmitter (8) and the C set of power transmitter (9) through the A set of isolation transmitter (3), the B set of isolation transmitter (4) and the C set of isolation transmitter (5).
3. The signal processing method of the active power control device of the giant hydroelectric generating set speed regulator according to claim 1 or 2, wherein the A set of PLC controllers (1) and the B set of PLC controllers (2) are respectively used as a main controller and a standby controller of the speed regulator to collect data of three sets of power transmitters in real time, the A set of power transmitters (7) independently transmit detected active power to the A set of PLC controllers (1) through the A set of isolation transmitters (3) to be recorded as A1 and used as a main sensing value of the A set of PLC controllers (1), the B set of power transmitters (8) independently transmit detected active power to the B set of PLC controllers (2) through the B set of isolation transmitters (4) to be recorded as B1 and used as a sensing value of the B set of PLC controllers (2), and the C set of power transmitters (9) transmit detected active power to the A set of PLC controllers (1) and the standby controllers (1) through the C set of isolation transmitters (5) one portion to be recorded as two, The B sets of PLC controllers (2) are respectively marked as A2 and B2, the A set of PLC controllers (1) read the active power value detected by the B set of power transmitters (8) of the B set of PLC controllers (2) in a communication mode and record the active power value as A3, the B set of PLC controllers (2) read the active power value detected by the A set of power transmitters (7) of the A set of PLC controllers (1) in a communication mode and record the active power value as B3, A1, A2, A3, B1, B2 and B3 are compared by a difference calculation method and then the optimal value of the active power of the speed regulator is selected by a two-out-of-three calculation method, so that data loss caused by a certain fault is avoided.
4. The active power signal processing method of the giant hydroelectric generating set speed regulator according to claim 3, wherein the processing comprises the following specific steps:
step1, judging whether the three sets of power transmitters have numerical value jump or disconnection fault through the data values, if the judgment result is fault, sequentially judging whether the A set of power transmitter (7), the B set of power transmitter (8) and the C set of power transmitter (9) have fault one by one, and preferentially selecting the detection numerical value of the fault-free power transmitter, wherein the selection principle is as follows: when the A set of power transmitter (7) has no fault, the A set of power transmitter (7) is preferentially selected; if the A set of power transmitter (7) has faults and the B set of power transmitter (8) has no faults, the value of the B set of power transmitter (8) is preferably selected; if the A set of power transmitter and the B set of power transmitter have faults, selecting the numerical value of the C set of power transmitter (9); if A, B, C sets of power transmitters have faults, the active power of the set A of PLC controllers (1) has limited use of the current sampling value of the main power transmitter, and sends out a serious fault alarm of the active power, and the main controller is switched to the standby set B of PLC controllers (2); if the judgment result shows that the three sets of power transmitters have no fault, entering Step 2;
the numerical values of the Step2 and the three sets of power transmitters are mutually differenced to calculate absolute values and make active power fault judgment, assuming that an allowable deviation percentage value threshold set by a system is delta P, the set A of PLC controllers (1) compare 3 received sets of numerical values, if 2| A1-A2|/A1+ A2< deltaP and 2| A1-A3|/A1+ A3< deltaP and 2| A2-A3|/A2+ A3 delta P, the three sets of power transmitters are normal, and the numerical value A deviation value of the set A power transmitter (7) is selected as A1; if 2| A1-A2|/A1+ A2> Δ P or 2| A1-A3|/A1+ A3> Δ P or 2| A2-A3|/A2+ A3> Δ P indicates that at least one of the deviation values of the three sets of power transmitters has overlarge acquisition deviation, an active power warning fault is reported; if 2| A1-A2|/A1+ A2 >. DELTA.P and 2| A1-A3|/A1+ A3 >. DELTA.P and 2| A2-A3|/A2+ A3 >. DELTA.P indicate that the deviation values of the three sets of power transmitters are overlarge, the active power serious fault is reported, the set A of PLC controllers (1) select the current sampling value Pa = A1 of the main power transmitter, and simultaneously switch the controllers to the standby set B of PLC controllers (2), and select B1, B2 and B3 to continue to select the active power value according to the operation of the step;
step3, judging that the acquired value A1 of the set A power transmitter (7) is abnormal if 2| A1-A2|/A1+ A2> delta P and 2| A1-A3|/A1+ A3> delta P, judging that the acquired value A2 of the set C power transmitter (9) is abnormal if 2| A1-A2|/A1+ A2> delta P and 2| A2-A3|/A2+ A3> delta P, and judging that the acquired value A3 of the set B power transmitter (8) is abnormal if 2| A2-A3|/A2+ A3 delta P and 2| A1-A3|/A1+ A3> -delta P;
and Step4, further judging and selecting active power data according to the processing result of the abnormal judgment logic of the power transmitter.
5. The active power signal processing method of the giant hydroelectric generating set speed regulator according to claim 4, wherein the Step4 comprises the following specific steps:
step4.1, when the collection of the set A of power transmitters (7) is abnormal and the set A of power transmitters (7) has no fault, selecting a collection value Pa = A1 of the set A of power transmitters (7), if the set A of power transmitters (7) has fault and the set B of power transmitters (8) has no fault, preferentially selecting a collection value Pa = A3 of the set B of power transmitters (8), if the set A of power transmitters (7) and the set B of power transmitters (8) have fault, preferentially selecting a collection value Pa = A2 of the set C of power transmitters (9), and if the set A of power transmitters (7), the set B of power transmitters (8) and the set C of power transmitters (9) have fault, selecting a current sampling value of the power transmitter for the active power of the set A of PLC controller (1), and switching the controller to a standby set B of PLC controller (2);
step4.2, when the A set of power transmitter (7) acquires abnormity and the B set of power transmitter (8) acquires abnormity, if the B set of power transmitter (8) has no fault, selecting the acquisition value Pa = A3 of the B set of power transmitter (8), if the B set of power transmitter (8) has fault and the C set of power transmitter (9) has no fault, selecting the acquisition value Pa = A2 of the C set of power transmitter (9), and if the B set of power transmitter (8) and the C set of power transmitter (9) both have faults, selecting the current sampling value of the main power transmitter by the A set of PLC controller (1), and switching the controller to the standby B set of PLC controller (2);
step4.3, when the A set of power transmitter (7) acquires abnormity and the B set of power transmitter (8) acquires abnormity, if the C set of power transmitter (9) acquires no abnormity and the C set of power transmitter (9) has no fault, selecting the acquisition value Pa = A2 of the C set of power transmitter (9), and if the C set of power transmitter (9) acquires abnormity or the C set of power transmitter (9) has fault, selecting the data of the main power transmitter, and switching the controller to the standby B set of PLC controller (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110628089.6A CN113339184A (en) | 2021-06-06 | 2021-06-06 | Active power control device and processing method for speed regulator of giant hydroelectric generating set |
Applications Claiming Priority (1)
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