CN110571762B - Strong electric control detecting system of turbine generator - Google Patents
Strong electric control detecting system of turbine generator Download PDFInfo
- Publication number
- CN110571762B CN110571762B CN201910851966.9A CN201910851966A CN110571762B CN 110571762 B CN110571762 B CN 110571762B CN 201910851966 A CN201910851966 A CN 201910851966A CN 110571762 B CN110571762 B CN 110571762B
- Authority
- CN
- China
- Prior art keywords
- relay
- normally open
- motor
- switch
- open contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 241001584775 Tunga penetrans Species 0.000 claims abstract description 73
- 239000010687 lubricating oil Substances 0.000 claims abstract description 70
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 239000003921 oil Substances 0.000 claims description 16
- 238000005461 lubrication Methods 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 8
- 101001063878 Homo sapiens Leukemia-associated protein 1 Proteins 0.000 claims description 7
- 102100030893 Leukemia-associated protein 1 Human genes 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 238000012360 testing method Methods 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/06—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generators; for synchronous capacitors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention provides a strong electric control detection system of a turbine generator, which can be conveniently debugged, has high detection efficiency, can avoid damage to the turbine generator, and has high safety; the intelligent control system comprises a three-phase four-wire system power supply, a control unit connected to the three-phase four-wire system power supply and a power supply unit connected to the three-phase four-wire system power supply, wherein the control unit is divided into a lubricating oil pump motor control unit, a jigger motor control unit and a variable frequency motor control unit which are respectively connected with the power supply unit, the lubricating oil pump motor control unit comprises a lubricating oil pump motor, the jigger motor control unit comprises a jigger motor, the variable frequency motor control unit comprises a variable frequency motor, and the lubricating oil pump motor, the jigger motor and the variable frequency motor are respectively connected with a thermal relay, a contactor, a current transformer, a current transducer and an air switch in sequence, and then are electrically connected to the three-phase four-wire system power supply, and the current transducers connected with the lubricating oil pump motor, the jigger motor and the variable frequency motor are respectively correspondingly connected with a DCS control system.
Description
Technical Field
The invention relates to the technical field of power generation, in particular to a strong electric control detection system of a turbine generator.
Background
The supercritical carbon dioxide power generation technology is an important direction for replacing the traditional steam power generation technology and realizing the development of energy utilization to higher efficiency and lower cost, and the supercritical carbon dioxide power generation system mainly comprises a compressor, heat source equipment or heat exchanger, a turbine generator set, a cooler and other core equipment; the main function of the turbine generator set is to convert the internal energy of the supercritical carbon dioxide working medium in a high temperature state into the kinetic energy of the rotating machinery and further convert the kinetic energy of the rotating machinery into electric energy, which is one of the core devices of the system, however, before the turbine generator set is delivered to a power plant, whether the vibration, the bearing temperature rise, the overspeed protection performance, the parameters and the like of the supercritical carbon dioxide turbine generator set are normal or not needs to be tested, otherwise, larger economic loss can be caused, and in general, the power plant has a special detection system, but on one hand, the detection system is relatively expensive, the debugging is inconvenient, on the other hand, the device is delivered to the power plant for testing, so that the debugging difficulty is increased, the detection efficiency is low, the labor cost is relatively high, and in addition, in the detection process, the condition that the turbine generator is frequently started is possibly needed, and the damage to the turbine generator is easy.
Disclosure of Invention
Aiming at the problems, the invention provides a strong electric control detection system of a turbine generator, which can be conveniently debugged, has high detection efficiency, can avoid damage to the turbine generator, and has high safety.
The technical scheme is as follows: the three-phase four-wire system power supply comprises a three-phase four-wire system power supply and a control unit connected to the three-phase four-wire system power supply, and is characterized in that: the intelligent control system is characterized by further comprising a power supply unit connected to the three-phase four-wire system power supply, wherein the control unit is divided into a lubricating oil pump motor control unit, a jigger motor control unit and a variable frequency motor control unit which are connected with the power supply unit respectively, the lubricating oil pump motor control unit comprises a lubricating oil pump motor, the jigger motor control unit comprises a jigger motor, the variable frequency motor control unit comprises a variable frequency motor, and the lubricating oil pump motor, the jigger motor and the variable frequency motor are connected with the three-phase four-wire system power supply respectively through a thermal relay, a contactor, a current transformer, a current transmitter and an air switch which are connected with the lubricating oil pump motor, the jigger motor and the variable frequency motor respectively.
It is further characterized by:
the thermal relay is divided into thermal relays FR1, FR2 and FR3, the contactor is divided into contactors KM1, KM2 and KM3, the current transformer is divided into current transformers A1, A2 and A3, the current transmitter is divided into a current transmitter DLB1, a current transmitter DLB2 and a current transmitter DLB3, and the air switch is divided into an air switch QF1, an air switch QF2 and an air switch QF3; the lubrication pump motor is electrically connected with the L1, L2 and L3 phase ends of the three-phase four-wire power supply after being sequentially connected with the thermal relay FR1, the contactor KM1, the current transformer A1, the current transducer DLB1 and the air switch QF1, the jigger motor is electrically connected with the L1, L2 and L3 phase ends of the three-phase four-wire power supply after being sequentially connected with the thermal relay FR2, the contactor KM2, the current transformer A2, the current transducer DLB2 and the air switch QF2, and the variable frequency motor is electrically connected with the L1, L2 and L3 phase ends of the three-phase four-wire power supply after being sequentially connected with the thermal relay FR3, the contactor KM3, the current transformer A3, the current transducer DLB3 and the air switch QF3;
the alarm unit comprises an air switch QF4, a relay KA3 and a buzzer ALLAE which are sequentially connected, wherein the air switch QF4 is connected with the L3 phase end of the three-phase four-wire power supply, and the buzzer ALLAE is connected with the N phase end of the three-phase four-wire power supply; the radiating unit comprises an air switch QF5, the air switch QF5 is connected between the L3 and N phase ends of the three-phase four-wire system power supply, the air switch QF5 is connected with an illuminating lamp L1 and a fan MI in parallel, and a proximity switch K1 is connected between the air switch QF5 and the illuminating lamp L1;
the power supply unit comprises air switches QF 6-QF 9, a transformer Y1 and fuses FU 1-FU 3, wherein a 380 AC-24 DC electric transformer is adopted by the transformer Y1, the two incoming line ends of the air switch QF6 are respectively connected with the L3 and N phase ends of the three-phase four-wire power supply, the two outgoing line ends of the air switch QF6 are connected with the two incoming line ends of the transformer Y1, and the air switches QF 7-QF 9 are respectively connected to the outgoing line ends of the transformer Y1 after passing through the fuses FU 1-FU 3; the lubricating oil pump motor control unit is connected with 100 and 101 wiring terminals of the air switch QF7, the jigger motor control unit is connected with 200 and 201 wiring terminals of the air switch QF8, and the variable frequency motor control unit is connected with 300 and 301 wiring terminals of the air switch QF 9;
the lubricating oil pump motor control unit further comprises intermediate relays KA1, KA2, KA6, KA7, delay relays KT 1-KT 3, a selector switch SA1, an oil pump fault indicator L2, an oil pump running indicator L3, button switches SB1, SB2, normally open contacts FR1-1 of the thermal relay FR1, normally open contacts KA1-1 of the intermediate relay KA1, normally open contacts KA6-2 of the intermediate relay KA6, normally open contacts KA7-1 of the intermediate relay KA7, button switches SB1, normally open contacts KM1-1 of the contactor KM1, normally closed contacts KM1-2 of the contactor KM1, and one end of the lubricating oil pump motor on are connected with 100 terminals of the air switch QF7, the intermediate relays KT 1-KT 3, the coil of the intermediate relay KA2, the coil of the contactor KM1, one end of the oil pump running indicator L3 are connected with the normally open contacts KT 7 of the air switch QF7, the normally closed contacts KT 1-6-1 of the other end of the intermediate relay K1 is connected with the coil of the intermediate relay K7, the normally open contacts of the intermediate relay 1-6 is connected with the coil of the intermediate relay 1-6, one end of the normally open contacts of the coil of the intermediate relay 1-6 is connected with the normally open contacts of the intermediate relay 1-7, one end of the normally open contacts of the coil of the intermediate relay 1-6 is connected with the coil of the normally open contacts 1-6 of the intermediate relay 1-7, the other end of the lubricant pump motor is connected with one end of a normally open contact KT3-1 of a delay relay KT3, the other end of the normally open contact KT3-1 of the delay relay KT3 is connected with the other end of a normally open contact KM1-1 of a contactor KM1 and then is connected with a normally open contact KT2-1 of a delay relay KT2, a normally open contact KT1-1 of the delay relay KT1 and one closed end of the lubricant pump motor, the closed other end of the lubricant pump motor is connected with one end pin 3 of a selector switch SA1 and one end of a button switch SB, the other end of the button switch SB is connected with one end of a normally closed contact FR1-2 of a thermal relay FR1, the normally closed contact KT1-1 of the delay relay KT2, the normally closed contact FR1-2 of the thermal relay FR1, a coil of the contactor KM1, a coil of an intermediate relay KA2 and a motor running indication lamp are connected with one end of the selector switch SA1 and one end of the selector switch SA1, and the other end of the selector switch SA1 is connected with one end of the selector switch SA1 and the other end of the selector switch SA 2;
the jigger motor control unit still includes jigger motor fault indication lamp L4, jigger motor operation indication lamp L5, select switch SA2, intermediate relay KA4, KA5, scram button JT1, button switch SB3, SB4, normally open contact KA5-1 of intermediate relay KA5, normally open contact FR2-1 of thermal relay FR2, button switch SB3, normally open contact KM2-1 of contactor KM2 and the one end that jigger motor was opened all with air switch QF 8's 200 wiring end is connected, jigger motor fault indication lamp L4, jigger motor operation indication lamp L5, coil of intermediate relay KA5, KA6, the one end of coil of contactor KM2 all with air switch QF 8's 201 wiring end is connected, normally open contact KA5-1 of intermediate relay KA5 with the other end of jigger motor fault indication lamp L4 is connected, normally open contact FR2-2 of intermediate relay FR2 is connected with the coil of intermediate relay FR2, the one end of the same type jigger motor is connected with the one end of the normally open contact SA2, the one end of the relay SA 4 is connected with the normally open contact SA2 of intermediate relay K2, the one end is connected with the switch SA2 of the selector switch SA2, the one end is connected with the normally open contact SA2 of the end of the intermediate relay K2, the one end is connected with the end 2 through the normally open contact 5 of the switch SB4, the one end is connected with the end of the switch 5, one end of a normally open contact KA4-2 of the intermediate relay KA4 is connected, the normally open contact KA2-2 of the intermediate relay KA2 and the other end of the normally open contact KA4-2 of the intermediate relay KA4 are connected with the other end of the emergency stop button JT1, and both ends of a normally open contact KA5-2 of the intermediate relay KA5 and a normally open contact KA6-1 of the intermediate relay KA6 and the 5 and 6 terminal pins of the selection switch SA2 are connected with the DCS control system;
the variable frequency motor control unit still includes selector switch SA3, emergency stop button JT2, button switch SB5, SB6, intermediate relay KA3, KA8, the normally open contact KA7-1 of intermediate relay KA7, button switch SB5 reaches the one end that the variable frequency motor opened all with the 300 wiring end of air switch QF9 is connected, the other end of button switch SB5 with the 1 terminal pin of selector switch SA3 is connected, the one end of intermediate relay KA3, KA7, KA8 coil all with the 301 wiring end of air switch QF9 is connected 300 wiring end of air switch QF9 with intermediate relay KA3, KA8 coil's the other end between equally divide and be equipped with binding post, the normally open contact KA7-1 of intermediate relay KA7, the other end that the variable frequency motor opened, the 2 terminal pin of selector switch SA3 links to each other the back with the 3 terminal pin of selector switch SB6, the other end of selector switch SA3 the 4 terminal pin, button switch SA 6 the other end link to each other with the intermediate relay 7-2, the intermediate relay 7 is connected with the intermediate relay 7 is in the intermediate relay 2-4, the intermediate relay 7 is connected with the intermediate relay 7, the other end of intermediate relay 7 is connected with the intermediate relay 2 through the normally open contact 7-2.
The invention has the beneficial effects that the intelligent control system is provided with the lubricating oil pump motor control unit, the jigger motor control unit and the variable frequency motor control unit which are connected with the power supply unit, the lubricating oil pump motor, the jigger motor and the variable frequency motor are respectively and sequentially connected with the thermal relay, the contactor, the current transformer, the current transducer and the air switch and then are electrically connected with the three-phase four-wire system power supply, and the current transducers which are connected with the lubricating oil pump motor, the jigger motor and the variable frequency motor are respectively correspondingly connected with the DCS control system, so that the jigger motor or the variable frequency motor can be controlled to be closed firstly after the DCS control system detects that the current of the lubricating oil pump motor is obviously larger than the rated current of the turbine generator in the non-starting stage in the detection test process of the turbine generator, and then the lubricating oil pump motor can be restarted after the set time once the lubricating oil pump motor is stopped, thereby avoiding frequent starting of the lubricating oil pump motor, realizing preferential protection of the turbine generator, and improving the safety and detection efficiency.
Drawings
FIG. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a schematic circuit diagram of a lube pump motor control unit;
FIG. 3 is a schematic circuit diagram of a jigger motor control unit;
fig. 4 is a schematic circuit diagram of a variable frequency motor control unit.
Detailed Description
As shown in fig. 1, the invention comprises a three-phase four-wire power supply and a control unit connected to the three-phase four-wire power supply, and also comprises a power supply unit connected to the three-phase four-wire power supply, wherein the control unit is divided into a lubricating oil pump motor control unit, a jigger motor control unit and a variable frequency motor control unit which are respectively connected with the power supply unit, the lubricating oil pump motor control unit comprises a lubricating oil pump motor T1, the jigger motor control unit comprises a jigger motor T2, the variable frequency motor control unit comprises a variable frequency motor T3, the lubricating oil pump motor T1, the jigger motor T2 and the variable frequency motor T3 are respectively and sequentially connected with a thermal relay, a contactor, a current transformer, a current transducer and an air switch, and then are electrically connected to the three-phase four-wire power supply, and the air switch plays roles of overload and short-circuit protection; the generated current signal of 4-20ma can be transmitted to a DCS control system through a current transmitter; the start and stop control of each motor is realized through a contactor; the thermal relay plays an overload protection role; the current transmitters connected with the lubricating oil pump motor T1, the jigger motor T2 and the variable frequency motor T3 are respectively correspondingly connected with a DCS control system (the DCS control system is an existing control system and is not shown in the figure).
The thermal relay is divided into thermal relays FR1, FR2 and FR3, the contactor is divided into contactors KM1, KM2 and KM3, the current transformer is divided into current transformers A1, A2 and A3, the current transmitter is divided into a current transmitter DLB1, a current transmitter DLB2 and a current transmitter DLB3, and the air switch is divided into an air switch QF1, an air switch QF2 and an air switch QF3; the lubrication pump motor T1 is electrically connected to the L1, L2 and L3 phase ends of the three-phase four-wire power supply after being sequentially connected with the thermal relay FR1, the contactor KM1, the current transformer A1, the current transducer DLB1 and the air switch QF1, the jigger motor T2 is electrically connected to the L1, L2 and L3 phase ends of the three-phase four-wire power supply after being sequentially connected with the thermal relay FR2, the contactor KM2, the current transformer A2, the current transducer DLB2 and the air switch QF2, and the variable frequency motor T3 is electrically connected to the L1, L2 and L3 phase ends of the three-phase four-wire power supply after being sequentially connected with the thermal relay FR3, the contactor KM3, the current transformer A3, the current transducer DLB3 and the air switch QF 3.
The alarm unit comprises an air switch QF4, a relay KA3 and a buzzer ALLAE which are sequentially connected, wherein the air switch QF4 is connected with the L3 phase end of the three-phase four-wire power supply, and the buzzer ALLAE is connected with the N phase end of the three-phase four-wire power supply; the radiating unit comprises an air switch QF5, the air switch QF5 is connected between the L3 phase end and the N phase end of the three-phase four-wire system power supply, the air switch QF5 is connected with an illuminating lamp L1 and a fan MI in parallel, and a proximity switch K1 is connected between the air switch QF5 and the illuminating lamp L1.
The power supply unit comprises air switches QF 6-QF 9, a transformer Y1 and fuses FU 1-FU 3, wherein a 380 AC-to-24 DC electric transformer is adopted by the transformer Y1, the two incoming line ends of the air switch QF6 are respectively connected with the L3 and N phase ends of a three-phase four-wire power supply, the two outgoing line ends of the air switch QF6 are connected with the two incoming line ends of the transformer Y1, and the air switches QF 7-QF 9 are respectively connected with the outgoing line ends of the transformer Y1 after passing through the fuses FU 1-FU 3; the lubricating oil pump motor control unit is connected with 100 and 101 wiring terminals of the air switch QF7, the jigger motor control unit is connected with 200 and 201 wiring terminals of the air switch QF8, and the variable frequency motor control unit is connected with 300 and 301 wiring terminals of the air switch QF 9.
As shown in fig. 2, the lubrication pump motor control unit further comprises intermediate relays KA1, KA2, KA6, KA7, delay relays KT1 to KT3, a selector switch SA1, an oil pump fault indicator lamp L2, an oil pump operation indicator lamp L3, and push-button switches SB1, SB2; when 18.5KW is selected for the lubricating oil pump motor T1 and is started directly under full load, the starting current is large, and the lubricating oil pump motor T1 cannot be powered off in the normal test process, the rated current of the air switch QF1 is two grades larger than that of the lubricating oil pump motor T1, the current transducer DLB1 is connected to the DCS control system, and the DCS control system turns off the jigger motor T2 or the variable frequency motor T3 firstly and turns off the lubricating oil pump motor T1 after detecting that the lubricating oil pump motor T1 is obviously larger than the rated current of the turbine generator in the non-starting stage; the delay relays KT1 and KT2 are delay power-off relays, the delay relay KT3 is a delay power-on relay, once the lubricating oil pump motor T1 is stopped, the motor cannot be started immediately, and the motor cannot be started again after the time set by the delay relay KT3, so that the damage caused by the frequent starting of the lubricating oil pump motor T1 is avoided.
Wherein, the normally open contact FR1-1 of the thermal relay FR1, the normally open contact KA1-1 of the intermediate relay KA1, the normally open contact KA6-2 of the intermediate relay KA6, the normally open contact KA7-1 of the intermediate relay KA7, the push button switch SB1, the normally open contact KM1-1 of the contactor KM1, the normally closed contact KM1-2 of the contactor KM1 and one opened end of the lubricating oil pump motor T1 are all connected with the 100 terminal of the air switch QF7, one end of the intermediate relay KA1, the delay relays KT 1-KT 3, the intermediate relay KA2, the coil of the contactor KM1 and the oil pump fault indication lamp L2, one end of the oil pump operation indication lamp L3 are all connected with the 101 terminal of the air switch QF7, the normally open contact KA1-1 of the intermediate relay KA1 is connected with the other end of the coil of the intermediate relay KA1, the normally open contact KA6-2 of the intermediate relay KA6 is connected with the other end of the coil of the delay relay KT2, the normally open contact KA7-1 of the intermediate relay KA7 is connected with the other end of the coil of the delay relay KT1, the normally closed contact KM1-2 of the contactor KM1 is connected with the other end of the coil of the delay relay KT3, the other end of the push button switch SB1 is connected with one end of the normally open contact KT3-1 of the delay relay KT3 after being connected with the 1 and 2 terminal pins of the selector switch SA1, the other end of the lubricant pump motor T1 is opened and is connected with one end of the normally open contact KT3-1 of the delay relay KT3, the other end of the normally open contact KT3-1 of the delay relay KT3 is connected with the other end of the normally open contact KM1-1 of the contactor KM1, the normally open contact KT2-1 of the delay relay KT2, the normally open contact KT1-1 of the delay relay KT1 and one closed end of the lubricating oil pump motor T1 are connected, the other closed end of the lubricating oil pump motor T1 is connected with the 3-end pin of the selection switch SA1 and one end of the push button switch SB, the other end of the push button switch SB is connected with one end of the normally closed contact FR1-2 of the thermal relay FR1, the normally open contact KT2-1 of the delay relay KT2, the normally closed contact FR1-2 of the thermal relay FR1, the coil of the contactor KM1, the coil of the intermediate relay KA2 and the other end of the oil pump operation indicating lamp L3 are connected with the 4-end pin of the selection switch SA1, the lubricating oil pump motor T1 is started, the lubricating oil pump motor T1 is closed, the normally open contact KA1-2 of the intermediate relay KA2 and the 5-6-end pins of the selection switch SA1 are respectively connected with the DCS control system; the feedback of the running state of the lubricating oil pump motor T1 of the DCS control system is realized through the normally open contact KA2-1 of the intermediate relay KA2, the feedback of the fault state of the lubricating oil pump motor T1 of the DCS control system is realized through the normally open contact KA1-2 of the intermediate relay KA1, and the feedback of the control mode of the lubricating oil pump motor T1 of the DCS control system is realized when the selection switch SA1 is switched to the 5 terminal pin and the 6 terminal pin.
In the lubricating oil pump motor control unit, the on-site control and DCS control can be realized on the start and stop of the lubricating oil pump motor T1 through the conversion of the selector switch SA1, and the frequent start of the lubricating oil pump motor T1 can be avoided by restarting the lubricating oil pump motor after the set time after the lubricating oil pump motor T1 is stopped through the normally closed contact KM1-2 of the contactor KM1 and the normally open contact KT3-1 of the delay relay KT 3; when the selection switch SA1 is switched in the on-site control mode, as the jigger motor T2 and the variable frequency motor T3 are not started at this time, once overload can be realized by directly closing the lubricating oil pump motor T1 through the normally closed contact FR1-2 of the thermal relay FR1, the selection switch SA1 is switched to the remote control mode after the lubricating oil pump motor T1 is started, and a test flow stage is entered, if overload occurs in the stage, the normally open contact KA1-1 of the intermediate relay KA1 is closed through the normally open contact FR1-1 of the thermal relay FR1, then the signal is fed back to the DCS control system through the normally open contact KA1-2 of the intermediate relay KA1, the DCS control system controls the jigger motor T2 and the variable frequency motor T3 to cut off immediately, and after a period of time, the lubricating oil pump motor T1 is closed, and the turbine generator is protected preferentially; the lubrication oil pump motor T1 can not be closed under the condition that the jigger motor T2 and the variable frequency motor T3 are started through the normally open contacts KA6-2 and KA7-1 of the intermediate relay KA6 and the normally open contacts KA7-1 of the delay relay KT1 and the normally open contacts KT1-1 of the delay relay KT2, the jigger motor T2 and the variable frequency motor T3 can be closed after the jigger motor T2 and the variable frequency motor T3 are closed after the delay relay is set for a period of time such as three minutes, the lubrication oil pump motor T1 can be automatically closed after the variable frequency motor T3 is closed in a normal experiment process, the field mode can be switched to, and the lubrication oil pump motor T1 can be closed after 3 minutes.
Specifically, the intermediate relay KA1 is controlled through the normally open contact FR1-1 of the thermal relay FR1, once the thermal relay FR1 is overloaded, the normally open contact FR1-1 of the thermal relay FR1 is attracted, the intermediate relay KA1 acts, the normally open contact KA1-1 of the intermediate relay KA controls the oil pump fault indicator lamp L2, and fault information of overload of the lubricating oil pump motor T1 is fed back to the DCS control system through the normally open contact KA 1-2; when the selection switch SA1 is at the position 1, the start and stop of the lubricating oil pump motor T1 can be controlled only remotely, and when the selection switch SA1 is at the position 2, the on-site control and the start and stop of the lubricating oil pump motor T1 can be controlled remotely; and once the jigger motor T2 and the variable frequency motor T3 are started, the normally open contact KT1-1 of the delay relay KT1 and the normally open contact KT2-1 of the delay relay KT2 are in vertical motor attraction, so that only the jigger motor T2 and the variable frequency motor T3 are started, the lubricating oil pump motor T1 cannot be closed anyhow, only the jigger motor T2 and the variable frequency motor T3 are stopped, and after the setting time of the delay relay KT1 and the delay relay KT2, the lubricating oil pump motor T1 can be closed, thereby avoiding misoperation of the turbine machine under the running condition, and enabling the lubricating oil pump motor T1 to be closed to cause dry friction of the turbine machine.
As shown in fig. 3, the jigger motor control unit further comprises a jigger motor T2 fault indicator lamp L4, a jigger motor T2 running indicator lamp L5, a selector switch SA2, intermediate relays KA4, KA5, a sudden stop button JT1, button switches SB3, SB4, a normally open contact KA5-1 of the intermediate relay KA5, a normally open contact FR2-1 of the thermal relay FR2, a button switch SB3, a normally open contact KM2-1 of the contactor KM2, and an opened end of the jigger motor T2 are all connected with a 200 terminal of an air switch QF8, coils of the jigger motor T2 fault indicator lamp L4, the jigger motor T2 running indicator lamp L5, coils of the intermediate relays KA5, KA6, one end of the coils of the contactor KM2 are all connected with a 201 terminal of the air switch QF8, the normally open contact KA5-1 of the intermediate relay KA5 is connected with the other end of the jigger motor T2 fault indicator lamp L4, the normally open contact FR2-1 of the thermal relay FR2 is connected with the other end of the coil of the intermediate relay KA5, the coil of the contactor KM2, the coil of the intermediate relay KA6 and the other end of the turning motor T2 running indicator L5 are connected with one end of the emergency stop button JT1, the other end of the button switch SB3 is connected with the 1 end pin of the selection switch SA2, the turning motor T2 is started, the other end of the normally open contact KM2-1 of the contactor KM2 and the 2 end pin of the selection switch SA2 are connected with one closed end of the turning motor T2, the closed other end of the turning motor T2 is connected with the 3 end pin of the selection switch SA2 and one end of the button switch SB4, the normally closed contact FR2-2 of the intermediate relay KA2 and one end of the normally open contact KA4-2 of the intermediate relay KA2 are connected after the other end of the selection switch SA2 and the other end of the button switch SB4 are connected, the normally open contact KA2-2 of the intermediate relay KA2, the other end of the normally open contact KA4-2 of the intermediate relay KA4 and the other end of the emergency stop button JT1 are connected, and the normally open contact KA5-2 of the intermediate relay KA5, the two ends of the normally open contact KA6-1 of the intermediate relay KA6 and the 5 and 6 terminal pins of the selection switch SA2 are connected with a DCS control system; the feedback of the running state of the jigger motor T2 of the DCS control system is realized through a normally open contact KA6-1 of the intermediate relay KA6, the feedback of the fault state of the jigger motor T2 of the DCS control system is realized through a normally open contact KA5-2 of the intermediate relay KA5, and the feedback of the control mode of the jigger motor T2 of the DCS control system is realized when the selection switch SA2 is converted into 5 and 6 terminal pins.
In the jigger motor control unit, a normally open contact FR2-1 of a thermal relay FR2 is used for controlling an intermediate relay KA5, once the thermal relay FR2 is overloaded, the normally open contact FR2-1 of the thermal relay FR2 is sucked, the intermediate relay KA5 acts, the normally open contact KA5-1 of the intermediate relay KA5 is used for controlling a jigger motor T2 fault indicator lamp L4, and fault information of overload of the jigger motor T2 is fed back to a DCS control system through the normally open contact KA5-2 of the intermediate relay KA 5; when the selection switch SA2 is at the position 1, only the turning motor T2 can be started and stopped in a remote control mode, when the selection switch SA2 is at the position 2, the on-site control can be realized, the starting and stopping of the turning motor T2 can be realized, and the function that the turning motor T2 cannot be started under the condition that the lubricating oil pump motor T1 is not started can be realized through the normally open contact KA2-2 of the intermediate relay KA2 and the normally open contact KA4-2 of the intermediate relay KA 4.
As shown in fig. 4, the variable frequency motor control unit further comprises a selection switch SA3, an emergency stop button JT2, button switches SB5 and SB6, and intermediate relays KA3 and KA8, wherein one end of the normally open contact KA7-1 of the intermediate relay KA7, one end of the button switch SB5 and one end of the variable frequency motor T3, which are opened, are respectively connected with the 300 terminal of the air switch QF9, the other end of the button switch SB5 is connected with the 1 terminal of the selection switch SA3, one end of each of the intermediate relays KA3, KA7 and KA8 coils is respectively connected with the 301 terminal of the air switch QF9, a connection terminal Z1 is respectively arranged between the 300 terminal of the air switch QF9 and the other end of the intermediate relay KA3 and KA8 coil, the normally open contact KA7-1 of the intermediate relay KA7, the other end of the variable frequency motor T3, the 2 terminal pin of the selection switch SA3 is connected with the 3 terminal pin of the selection switch SA3, one end of the button switch SB6 is uniformly connected with the 4 terminal pin of the variable frequency switch SB3, the other end of the button switch SB6 is connected with the normally open contact system of the intermediate relay 2-7, the normally open contact system is connected with the intermediate relay 2-7, the normally open contact KA 7-7 is connected with the other end of the intermediate relay 2, and the intermediate relay 7-7 is connected with the other end of the intermediate relay 2-7, and the normally open contact 7 is connected with the intermediate relay 2-7 and the other end of the intermediate relay 2; the function that the variable frequency motor T3 cannot be started under the condition that the lubricating oil pump motor T1 is not started can be realized through the normally open contact KA2-3 of the intermediate relay KA2 and the normally open contact KA4-3 of the intermediate relay KA 4; when the selection switch SA3 is switched to the 5 terminal pin and the 6 terminal pin, feedback of the start-stop control mode of the variable frequency motor T3 of the DCS control system is realized.
According to the detection test, the strong current part to be controlled is a lubrication oil pump motor T1 with the power of 18.5kw, a jigger motor T2 with the power of 22kw and a variable frequency motor T3 with the power of 600kw, 1 can be realized, and before the lubrication oil pump motor T1 is not started, the jigger motor T2 and the variable frequency motor T3 cannot be started; 2. in the starting state of the jigger motor T2 and the variable frequency motor T3, the lubricating oil pump motor T1 can not be stopped, and after the jigger motor T2 and the variable frequency motor T3 are stopped for 1 minute, the lubricating oil pump motor T1 can be stopped; 3. once the lubricating oil pump motor T1 stops, the lubricating oil pump motor T1 can be started again after a set time is required, so that the damage of the lubricating oil pump motor T1 caused by frequent starting is avoided, and the damage of the turbine generator is also avoided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. The utility model provides a strong electric control detecting system of turbo generator, its includes three-phase four-wire system power and connect in the control unit on the three-phase four-wire system power, its characterized in that: the intelligent control system comprises a power supply unit, a control unit and a control unit, wherein the power supply unit is connected to a three-phase four-wire system power supply, the control unit is divided into a lubricating oil pump motor control unit, a jigger motor control unit and a variable frequency motor control unit which are respectively connected with the power supply unit, the lubricating oil pump motor control unit comprises a lubricating oil pump motor, the jigger motor control unit comprises a jigger motor, the variable frequency motor control unit comprises a variable frequency motor, and the lubricating oil pump motor, the jigger motor and the variable frequency motor are respectively and sequentially connected with a thermal relay, a contactor, a current transformer, a current transducer and an air switch, and then are electrically connected to the three-phase four-wire system power supply, and the current transducer connected with the lubricating oil pump motor, the jigger motor and the variable frequency motor is respectively correspondingly connected with a DCS control system; the thermal relay is divided into thermal relays FR1, FR2 and FR3, the contactor is divided into contactors KM1, KM2 and KM3, the current transformer is divided into current transformers A1, A2 and A3, the current transmitter is divided into a current transmitter DLB1, a current transmitter DLB2 and a current transmitter DLB3, and the air switch is divided into an air switch QF1, an air switch QF2 and an air switch QF3; the lubrication pump motor is electrically connected with the L1, L2 and L3 phase ends of the three-phase four-wire power supply after being sequentially connected with the thermal relay FR1, the contactor KM1, the current transformer A1, the current transducer DLB1 and the air switch QF1, the jigger motor is electrically connected with the L1, L2 and L3 phase ends of the three-phase four-wire power supply after being sequentially connected with the thermal relay FR2, the contactor KM2, the current transformer A2, the current transducer DLB2 and the air switch QF2, and the variable frequency motor is electrically connected with the L1, L2 and L3 phase ends of the three-phase four-wire power supply after being sequentially connected with the thermal relay FR3, the contactor KM3, the current transformer A3, the current transducer DLB3 and the air switch QF3; the detection system further comprises an alarm unit and a heat dissipation unit which are connected to the three-phase four-wire power supply in parallel, wherein the alarm unit comprises an air switch QF4, a relay KA3 and a buzzer ALLAE which are sequentially connected, the air switch QF4 is connected with the L3 phase end of the three-phase four-wire power supply, and the buzzer ALLAE is connected with the N phase end of the three-phase four-wire power supply; the radiating unit comprises an air switch QF5, the air switch QF5 is connected between the L3 and N phase ends of the three-phase four-wire system power supply, the air switch QF5 is connected with an illuminating lamp L1 and a fan MI in parallel, and a proximity switch K1 is connected between the air switch QF5 and the illuminating lamp L1; the power supply unit comprises air switches QF 6-QF 9, a transformer Y1 and fuses FU 1-FU 3, wherein a 380 AC-to-24 DC power transformer is adopted by the transformer Y1, the two incoming line ends of the air switch QF6 are respectively connected with the L3 and N phase ends of the three-phase four-wire power supply, the two outgoing line ends of the air switch QF6 are connected with the two incoming line ends of the transformer Y1, and the air switches QF 7-QF 9 are respectively connected to the outgoing line ends of the transformer Y1 after passing through the fuses FU 1-FU 3; the lubricating oil pump motor control unit is connected with 100 and 101 wiring terminals of the air switch QF7, the jigger motor control unit is connected with 200 and 201 wiring terminals of the air switch QF8, and the variable frequency motor control unit is connected with 300 and 301 wiring terminals of the air switch QF 9.
2. The system for detecting the strong electric control of a turbine generator according to claim 1, wherein: the lubricating oil pump motor control unit further comprises an intermediate relay KA1, KA2, KA6, KA7, a delay relay KT 1-KT 3, a selection switch SA1, an oil pump fault indicator L2, an oil pump running indicator L3, a button switch SB1 and SB2, a normally open contact FR1-1 of the thermal relay FR1, a normally open contact KA1-1 of the intermediate relay KA1, a normally open contact KA6-2 of the intermediate relay KA6, a normally open contact KA7-1 of the intermediate relay KA7, a button switch SB1, a normally open contact KM1-1 of the contactor KM1, a normally closed contact KM1-2 of the contactor KM1, and one end of the lubricating oil pump motor is connected with a 100 terminal coil of the air switch QF7, a normally closed contact KT1-1 of the relay KT1, a normally open contact K1-2 of the relay KT1 is connected with a coil of the intermediate relay QF7, a normally closed contact K1-1 of the relay K1 is connected with a normally open contact K1 of the intermediate relay K1, another end of the relay K1 is connected with a normally open contact K1-6 of the relay K1 of the intermediate relay K7, another end of the normally open contact K1 is connected with another end of the relay K1-6 of the relay K1, another end of the relay K1 is connected with another end of the normally open contact K1-6 of the relay K1 is connected with another end of the relay K1, the other end that the lubricant pump motor was opened with the one end of normally open contact KT3-1 of delay relay KT3 is connected, the other end of normally open contact KT3-1 of delay relay KT3 with the other end of normally open contact KM1-1 of contactor KM1 links to each other the back with normally open contact KT2-1 of delay relay KT2, the one end homogeneous phase connection that the lubricant pump motor closed, the other end that the lubricant pump motor closed with the 3 end foot of selector switch SA1, the one end homogeneous phase connection of button switch SB, the other end of button switch SB with the one end of normally closed contact FR1-2 of relay FR1, normally closed contact KT1-1 of delay relay KT2, normally closed contact FR1-2 of relay FR1, the coil of contactor KM1, the coil of intermediate relay KA2, the running indication lamp L3 of lubricant pump and the one end of selector switch SA1, the other end of intermediate relay KA2 are connected with the one end of selector switch SA1, the one end of selector switch SA1 and the one end of selector switch SA1, the two ends of selector switch SA1 and the equal to be connected with the normally open end of selector switch SA 1.
3. The system for detecting the strong electric control of a turbine generator according to claim 1, wherein: the jigger motor control unit still includes jigger motor fault indication lamp L4, jigger motor operation indication lamp L5, select switch SA2, intermediate relay KA4, KA5, scram button JT1, button switch SB3, SB4, normally open contact KA5-1 of intermediate relay KA5, normally open contact FR2-1 of thermal relay FR2, button switch SB3, normally open contact KM2-1 of contactor KM2 and the one end that jigger motor was opened all with air switch QF 8's 200 wiring end is connected, jigger motor fault indication lamp L4, jigger motor operation indication lamp L5, coil of intermediate relay KA5, KA6, the one end of coil of contactor KM2 all with air switch QF 8's 201 wiring end is connected, normally open contact KA5-1 of intermediate relay KA5 with the other end of jigger motor fault indication lamp L4 is connected, normally open contact FR2-2 of intermediate relay FR2 is connected with the coil of intermediate relay FR2, the one end of the same type jigger motor is connected with the one end of the normally open contact SA2, the one end of the relay SA 4 is connected with the normally open contact SA2 of intermediate relay K2, the one end is connected with the switch SA2 of the selector switch SA2, the one end is connected with the normally open contact SA2 of the end of the intermediate relay K2, the one end is connected with the end 2 through the normally open contact 5 of the switch SB4, the one end is connected with the end of the switch 5, one end of a normally open contact KA4-2 of the intermediate relay KA4 is connected, the other ends of a normally open contact KA2-2 of the intermediate relay KA2 and a normally open contact KA4-2 of the intermediate relay KA4 are connected with the other end of the emergency stop button JT1, and two ends of a normally open contact KA5-2 of the intermediate relay KA5 and a normally open contact KA6-1 of the intermediate relay KA6 and 5 and 6 terminal pins of the selection switch SA2 are connected with the DCS control system.
4. The system for detecting the strong electric control of a turbine generator according to claim 1, wherein: the variable frequency motor control unit still includes selector switch SA3, emergency stop button JT2, button switch SB5, SB6, intermediate relay KA3, KA8, the normally open contact KA7-1 of intermediate relay KA7, button switch SB5 reaches the one end that the variable frequency motor opened all with the 300 wiring end of air switch QF9 is connected, the other end of button switch SB5 with the 1 terminal pin of selector switch SA3 is connected, the one end of intermediate relay KA3, KA7, KA8 coil all with the 301 wiring end of air switch QF9 is connected 300 wiring end of air switch QF9 with intermediate relay KA3, KA8 coil's the other end between equally divide and be equipped with binding post, the normally open contact KA7-1 of intermediate relay KA7, the other end that the variable frequency motor opened, the 2 terminal pin of selector switch SA3 links to each other the back with the 3 terminal pin of selector switch SB6, the other end of selector switch SA3 the 4 terminal pin, button switch SA 6 the other end link to each other with the intermediate relay 7-2, the intermediate relay 7 is connected with the intermediate relay 7 is in the intermediate relay 2-4, the intermediate relay 7 is connected with the intermediate relay 7, the other end of intermediate relay 7 is connected with the intermediate relay 2 through the normally open contact 7-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910851966.9A CN110571762B (en) | 2019-09-10 | 2019-09-10 | Strong electric control detecting system of turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910851966.9A CN110571762B (en) | 2019-09-10 | 2019-09-10 | Strong electric control detecting system of turbine generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110571762A CN110571762A (en) | 2019-12-13 |
| CN110571762B true CN110571762B (en) | 2024-03-22 |
Family
ID=68778763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910851966.9A Active CN110571762B (en) | 2019-09-10 | 2019-09-10 | Strong electric control detecting system of turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110571762B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111047851B (en) * | 2020-03-13 | 2020-06-19 | 山东奇美仪器有限公司 | Control system of multifunctional mechanical testing machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201607499U (en) * | 2010-03-26 | 2010-10-13 | 哈尔滨国力电气有限公司 | Generator-transformer composite monitoring and recording device |
| CN206133295U (en) * | 2016-09-06 | 2017-04-26 | 首帆动力科技江苏有限公司 | Generating set control box test circuit |
| CN210577762U (en) * | 2019-09-10 | 2020-05-19 | 昆山江锦机械有限公司 | Strong current control detection system of turbine generator |
-
2019
- 2019-09-10 CN CN201910851966.9A patent/CN110571762B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201607499U (en) * | 2010-03-26 | 2010-10-13 | 哈尔滨国力电气有限公司 | Generator-transformer composite monitoring and recording device |
| CN206133295U (en) * | 2016-09-06 | 2017-04-26 | 首帆动力科技江苏有限公司 | Generating set control box test circuit |
| CN210577762U (en) * | 2019-09-10 | 2020-05-19 | 昆山江锦机械有限公司 | Strong current control detection system of turbine generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110571762A (en) | 2019-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110571762B (en) | Strong electric control detecting system of turbine generator | |
| CN203399029U (en) | Dual-motor switching starting control device | |
| CN210577762U (en) | Strong current control detection system of turbine generator | |
| CN201563003U (en) | Dual-power switching device for air-cooled control box of large-size power transformer | |
| CN1549281A (en) | Transformer cooling fan controlling apparatus | |
| CN201557068U (en) | Control device of electromotor lift-up oil pump for fan | |
| CN111734580B (en) | Multi-variable monitoring and protecting system and method for fan grid-connected loop | |
| CN202749184U (en) | Pre-magnetizing device for transformer of high-power wind power complete machine test bench | |
| CN201509066U (en) | Power generating set circuit with electric power monitoring system | |
| CN103532445B (en) | A kind of startup control device of heavy load start of motor and control method thereof | |
| CN216290739U (en) | Energy-saving heat dissipation controller of high-voltage variable frequency motor | |
| CN211924865U (en) | Dry oil lubrication constant-temperature electrical control system of heavy-load transmission equipment | |
| CN207559894U (en) | A kind of fuel frequency converter | |
| CN204633646U (en) | A kind of disintegrating machine threephase asynchronous machine soft starting device | |
| CN202474823U (en) | Integrated protection device for electromotor | |
| CN105575616A (en) | Automatic cooling system for transformer | |
| CN111313370A (en) | Power supply open-phase protection circuit of alternating current servo speed regulation system | |
| CN202455042U (en) | Three-phase alternating-current motor control device | |
| CN220522640U (en) | Sound-proof housing temperature regulating device | |
| CN105564622A (en) | Ship electric energy distribution control device based on contacts and control method | |
| CN217135153U (en) | Open-phase fault accurate monitoring system of three-phase motor start-stop device | |
| CN111379846B (en) | Dry oil lubrication constant-temperature electrical control system of heavy-duty transmission equipment | |
| CN205377719U (en) | A time delay electrical control cabinet for railway construction car motor control | |
| CN220623646U (en) | Permanent magnet speed regulation lubricating oil station control device | |
| CN219953617U (en) | Oil pump switching control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |