Three-phase imbalance load simulation test device and test method
A technology of balancing load and simulating test, applied in the direction of measuring devices, instruments, measuring electricity, etc., can solve the problem that the three-phase balanced current cannot meet the adjustment performance of the three-phase controllable reactor, and achieve the effect of reliable operation
Active Publication Date: 2020-08-04
杭州银湖电气设备有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to solve the situation that the normal use of three-phase balanced current cannot meet the test requirements for the adjustment performance of three-phase controllable reactors, and proposes a three-phase unbalanced load simulation test device and its method. Incorporating fixed capacitor banks, switching capacitor banks and adjustable reactors can artificially create a three-phase unbalanced current, and this unbalanced current is controllable, which can verify that the three-phase controllable reactor works under the condition of three-phase unbalance The ability to adjust and verify whether the response time of the YMSVC-type phase-splitting compensation device can meet user requirements
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[0035] Example: such as figure 1 As shown, the structural diagram of the three-phase unbalanced load simulation test device consists of a power cabinet 1, a voltage regulator 2, an intermediate transformer 3, a capacitor device, an electrical signal detection device for measuring and testing bus voltage and current signals, an adjustable reactor and a standby The test device 7 is composed of a power cabinet 1 with a three-phase power output terminal, and three test buses are respectively electrically connected to the three-phase power output ports of the power cabinet 1, and each test bus is connected with a voltage regulator 2, an intermediate transformer 3, Capacitor device, electrical signal detection device for measuring and testing bus voltage and current signals, adjustable reactor and device 7 to be tested, the power input end of voltage regulator 2 is electrically connected with a power output end of power supply cabinet 1 through a switch, and the voltage is adjusted ...
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The invention discloses a three-phase imbalance load simulation test device and a test method. The device comprises a power supply cabinet, wherein the power supply cabinet is provided with a three-phase power supply output end, three test buses are correspondingly and electrically connected with three-phase power supply output ports of the power supply cabinet respectively, each test bus is connected with a voltage regulator, an intermediate transformer, a capacitor device, an electric signal detection device for measuring voltage and current signals of the test bus, an adjustable reactance device and a to-be-tested device, the power supply input end of the voltage regulator is electrically connected with one power supply output end of the power supply cabinet through a switch, the powersupply output end of the voltage regulator is electrically connected with the power supply input end of the intermediate transformer, and the power supply output end of the intermediate transformer iselectrically connected with the capacitor device, the adjustable reactance device and the capacitor device. According to the technical scheme, the three-phase imbalance controllable current can be artificially manufactured, the adjusting capacity of the three-phase controllable reactor under the three-phase imbalance condition can be verified, and whether the response time of a YMSVC type split-phase compensation device can meet the user requirements or not can be verified.
Description
technical field [0001] The invention relates to the technical field of power product testing, in particular to a three-phase unbalanced load simulation test device and a method thereof. Background technique [0002] In some enterprises, such as steel mills or railways, the load equipment uses a single-phase system for power consumption. Since the power grid is a three-phase system, this will cause unbalanced loads on the three-phase lines. In order to solve this problem, it is necessary to adjust the unbalanced circuit according to the actual situation. To compensate and reduce the unbalance of the three-phase system, this problem can be solved by using a three-phase controllable reactor device. Since the three-phase controllable reactor is in actual operation, there will be inconsistencies in the three-phase load, that is, the load of the three-phase The voltage is constant, and the three-phase current is unbalanced. At this time, the output of the reactor will be greatly a...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 何建伟杨圣利杨富文荣峻峰张钊袁成
Owner 杭州银湖电气设备有限公司