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INVENTION
Russian Federation Patent RU2139444
INDEPENDENT VETRODIZELELEKTRICHESKAYA INSTALLATION
Name of the inventor: Levin GH (RU); Viksman AS (RU); Radchenko VA (RU); Axelrod ML (RU); Agafonov, AN (RU); Zhuravlev AA (RU); Tolmachev VN (RU); Saydanov VO (RU); Preben Maegard (DK); Niels Vilsbel (DK)
The name of the patentee: Open Joint Stock Company "Star"
Address for correspondence: 193012, St. Petersburg, ul.Babushkina 123, "Zvezda"
Starting date of the patent: 1998.06.15
The invention relates to mechanical engineering, in particular to combined plants for vetrodizelelektricheskim autonomous power supply. The technical result consists in increasing the efficiency of battery vetrodizelelektricheskoy installation and improvement of its energy performance in the steady-state and transient conditions, it is achieved by the fact that in the autonomous vetrodizelelektricheskoy installation comprising connected to buses consumers asynchronous electric machines and synchronous machines, asynchronous electric machine is executed with a short the rotor winding is connected to the buses consumers through the circuit breaker and is connected to the wind turbine equipped with a blade angle control system propeller for stabilizing the rotational speed, the synchronous machine and connected to the busbars consumers via a circuit breaker provided with an inertial flywheel to the shaft and connected to a piston engine controlled by an internal combustion razobschitelnoy clutch. Installation and additionally equipped with a relay starting piston engine and the clutch, the current frequency relay tire consumers, sensor values of active power load, sensor values and active power flow direction of the synchronous machine, a timer, a and a comparator for comparing the values of the active power load and synchronous machine, while the output current frequency switch is connected to the input of the engine start switch and turn razobschitelnoy coupling via a timer, and the output of the comparator - to disconnect the devices automatically switch the asynchronous machine and to the input of the engine start switch and turn razobschitelnoy clutch directly.
DESCRIPTION OF THE INVENTION
The invention relates to mechanical engineering, in particular to combined plants for vetrodizelelektricheskim autonomous power consumers, with no possibility of external electricity supply grid.
The closest to the invention is a device for the author's certificate SU 1813918 AI, 07.05.93 at vetrodizelelektricheskuyu plant comprising buses connected to the consumer an asynchronous electric machine and a synchronous electric machine.
Object of the invention - increase the efficiency of battery vetrodizelelektricheskoy installation and improvement of its energy performance in the steady-state and transient conditions. This is achieved in that the autonomous vetrodizelelektricheskoy installation comprising attached to tires consumers asynchronous electric machine and a synchronous electrical machine, an asynchronous electric machine, made with a short rotor winding is connected to the buses consumers through the circuit breaker and is connected to the wind turbine, provided with an automatic control system rotation angle propeller blades in order to stabilize the rotational speed, the synchronous electrical machine and connected to the busbars consumers through the circuit breaker and is connected to the internal combustion piston engine, in which installation further introduced inertia flywheel to the shaft of the synchronous machine controlled razobschitelnaya coupling between the shafts of synchronous machines and piston motor start relay piston engine and including razobschitelnoy clutch current frequency relay tire consumers sensor value of active power load, the sensor values and the active power flow direction of the synchronous machine, a timer, a and a comparator to the first input of which is connected the output of active power value sensor load, and the second - the output of the sensor values and active power flow direction of the synchronous machine, with the output frequency of the current relay is connected to the input of the engine start switch and turn razobschitelnoy clutch via a timer, and the comparator output is connected to the shut-off device of the circuit breaker of the asynchronous machine and to an input engine start switch and turn razobschitelnoy clutch directly.
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The drawing shows a diagram of the device autonomous vetrodizelelektricheskoy installation. The apparatus includes a wind power unit (WPU) containing an asynchronous electric machine 1 with a short-circuited rotor windings connected to the wind turbine 2 and 3 connected to the buses of consumers 4 via a circuit breaker 5. The wind turbine is equipped with a 6 speed sensor and automatic control system 7 angle wind turbine blades 2 to stabilize the turbine shaft speed. The device includes a diesel-generator set (DGS), comprising a synchronous electric machine 8 with the inertial flywheel 9 on a shaft connected to the piston internal combustion engine 10 via a controlled razobschitelnoy clutch 11 and connected to the tires 3 via the circuit breaker 12. ICE 10 and razobschitelnaya clutch 11 are provided with a relay 13 start and turn. For tires 3 consumers connected 14 relay frequencies. Between the tires 3 and 4 is connected consumers sensor 15 values of active power load between the tires and the synchronous machine 3 and 8 connected magnitude sensor 16 and active power flow direction of the synchronous machine, outputs of which are connected to first and second inputs of the comparator 17. The output of comparator 17 directly and the output frequency relay 14 are connected via a timer 18 according to the scheme "OR" to the input of the relay 13 start the engine and turn on razobschitelnoy clutch. The output of the comparator 17 is connected to and disconnect the device breaker 5 asynchronous machine. |
INSTALLATION WORKS AS FOLLOWS
To start the wind turbine shaft it is necessary to make the starting point, so the start-up carried out by the synchronous machine flywheel diesel generator set. In this case turned on razobschitelnaya clutch 11 connecting the crankshaft internal combustion engine 10 with the shaft of the synchronous machine 8 and starts the engine. After the synchronous machine at the rated frequency and its connection to the switch 12 turns on the switch rails 3 and 5, a voltage is applied to the asynchronous machine 1 for the promotion of wind turbine 2 to the rated speed. The presence on the shaft of the synchronous machine inertia flywheel 9 due to the significant amount of kinetic energy facilitates the launch conditions of wind turbines. At a wind speed sufficient to operate the wind turbine and the power consumer is disconnected razobschitelnaya clutch 11 and stops the internal combustion engine 10, then the synchronous machine 8 consuming active power from the wind turbine in order to maintain the rotation inertia of the flywheel 9 with a nominal frequency and generates reactive power to generate a magnetic flux in the asynchronous 1 car wind turbines and for power consumers 4. presence on the shaft of the synchronous machine inertia flywheel contributes to the stabilization of the current frequency and active power at the consumer tire both steady and transient modes at change of wind speed or dynamically changing the value of the active power load than easier CAP task to stabilize the wind turbine speed asynchronous machine. In case of reduction of wind speed, wind turbines generated when the active power is insufficient to power consumers, the current is frequency reduction. At the current rate below the minimum for the signal frequency relay 14 time-delayed by a timer 18 a signal to the relay 13 start the engine and turn on razobschitelnoy clutch. After starting the DSU generates reactive power and active missing. Setting timer 18 should be several times higher than the transient setup with dynamic load increase or decrease in wind speed within the permissible values. The presence on the shaft of the synchronous machine inertia flywheel provides power consumers lacking the active power and reduces the frequency of the current failure during start the engine and turn on razobschitelnoy clutch. In the case where the value of the active power flow generated by the synchronous machine 8, is equal to or greater than the active power value consumers that there is a sharp decrease in wind speed or failure of the wind turbine, the comparator 17 issues a command without delay on the circuit breaker 5 asynchronous machine 1 wind turbine 3 of tires consumers, and the relay 13 start the internal combustion engine 10 and the inclusion of razobschitelnoe clutch 11. The comparator 17 carries out the formation of the team based on a comparison of its constituent values of the output signals of the sensor 15, the load active power and the sensor 16 the magnitude and direction of active power flow synchronous machine 8. Transfer of power consumers from the wind turbines to a diesel generator is carried out without interrupting the supply voltage sinusoid.
Thus, the proposed autonomous combined vetrodizelelektricheskaya setting provides increased efficiency by incorporating the work of the internal combustion engine only in cases of lack of wind turbine air flow rate, improving energy performance in the steady-state and transient conditions by stabilizing the frequency and power and can be used for consumers of guaranteed power, not admitting gap sine wave voltage.
CLAIM
Autonomous vetrodizelelektricheskaya unit comprising the connected busbar consumers asynchronous electric machine and a synchronous electric machine, characterized in that the asynchronous electric machine, made with short-circuited winding of the rotor is connected to the buses consumers through the circuit breaker and is connected to the wind turbine equipped with automatic control angle system blade propeller to stabilize the speed, synchronous electric machine, and is connected to the buses consumers through a circuit breaker and is connected to the internal combustion piston engine, in which the installation is further introduced inertia flywheel on the shaft of the synchronous machine controlled razobschitelnaya coupling between the shafts of the synchronous machine and the piston engine, relay starter piston engine and including razobschitelnoy clutch current frequency relay tire consumers sensor value of active power load, a sensor value and direction of the flow of active power of the synchronous machine, a timer, a, and a comparator to the first input of which is connected the output of the sensor values of active power load, and the second - the output of the sensor values and active power flow direction of the synchronous machine, with the output frequency of the current relay is connected to the input of the engine start switch and turn razobschitelnoy clutch via a timer, and the comparator output is connected to the shut-off device of the circuit breaker of the asynchronous machine and to the input of the start relay engine and enable razobschitelnoy clutch directly.
print version
Publication date 11.01.2007gg
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