Variable pitch super capacitor field capacitance test tool and method
A supercapacitor and capacity testing technology, which is applied in power supply testing and other directions, can solve problems such as operational safety hazards, low measurement accuracy, and long measurement time, and achieve the effects of compensating for the impact of measurement accuracy, improving work efficiency, and eliminating potential safety hazards
Pending Publication Date: 2017-07-14
ZHEJIANG WINDEY
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Problems solved by technology
[0008] In order to overcome the deficiencies of hidden dangers of operation safety, low measurement accuracy and long measurement time involved in the field test of supercapacitors, the present invention provides a fast and efficient method that can greatly reduce operation safety, greatly improve measurement accuracy On-site capacity test tool and method of pitch supercapacitor
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[0028] The present invention will be further described below in conjunction with the accompanying drawings.
[0029] refer to Figure 1 ~ Figure 4 , a pitch supercapacitor field capacity test tool, including a portable simple electronic load instrument, a portable simple voltage regulation constant current source and a transfer switch for realizing selective conduction switching of the charging circuit and the discharging circuit, the transfer switch is passed through all the The wires are respectively connected to the electronic load instrument and the voltage-regulating constant-current source, so as to realize free switching between the charging circuit and the discharging circuit. The first state of the transfer switch is that the electronic load meter, the voltage regulating constant current source and the super capacitor to be tested are all disconnected; the second state is that the voltage regulating constant current source and the super capacitor to be tested are conn...
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The invention relates to a variable pitch super capacitor field capacitance test tool and method. The tool comprises an electronic load meter, a voltage regulation constant voltage source and a changeover switch. One side of the changeover switch is connected with the electronic load meter and the voltage regulation constant voltage source through wires. The other side of the changeover switch is connected with positive and negative poles of a super capacitor module to be tested through a wire. The first state of the changeover switch is that the electronic load meter, the voltage regulation constant voltage source and the super capacitor to be tested are disconnected. The second state is that the voltage regulation constant voltage source and the super capacitor to be tested are connected to form a charging circuit and the electronic load meter is disconnected from the super capacitor to be tested. The third state is that the electronic load meter is connected with the super capacitor to be tested are connected to form a discharge circuit and the voltage regulation constant voltage source is disconnected from the super capacitor to be tested. The invention further provides the variable pitch super capacitor field capacitance test method. According to the invention, operational safety hazards can be greatly reduced; the measurement accuracy is greatly improved; and the test tool and method are fast and efficient.
Description
technical field [0001] The invention belongs to the field of wind generator set maintenance, and in particular relates to a tool and a method for field testing the supercapacitor capacity of a backup power supply of a pitch control system. Background technique [0002] The domestic mainstream products of the backup power supply used in the pitch control system of wind turbines include valve-regulated lead-acid batteries, lithium batteries and super capacitors. Most of the early 1.5MW wind turbines used valve-regulated lead-acid batteries. With the advent of super capacitors, there are more and more applications in the backup power supply of the pitch control system. At present, most of the pitch control systems of wind turbines use super capacitors. Because some advantages of supercapacitors are more prominent than batteries: high energy density, good discharge characteristics, short charging time, good low temperature characteristics, easy status monitoring, long working li...
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Login to View More IPC IPC(8): G01R31/40
CPCG01R31/40
Inventor 王庆峰周显勇王杭烽应有许国东
Owner ZHEJIANG WINDEY