Electricity taking and measurement switching device and system based on single magnetic loop
A switching device and switching system technology, which is applied in the direction of measuring devices, circuit devices, measuring electrical variables, etc., can solve the problems of unsatisfactory reliability performance, decreased reliability of primary equipment, difficulty in installation and maintenance, etc., and achieve optimal time Chip control, easy installation and post-maintenance, weight reduction effect
Pending Publication Date: 2018-10-26
SHENZHEN LANHOPE ELECTRONICS +1
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Problems solved by technology
However, this existing device is directly installed on the cable and lacks a power supply; adding a PT power supply method will inevitably increase the cost and space, and at the same time cause the overall reliability of the primary equipment to decrease
In addition, if the solar photovoltaic power supply method is used, it will be greatly affected by the environment and climate, and it is not a particularly suitable solution.
Therefore, the cost of the existing technology for power acquisition and measurement in power system distribution network fault monitoring is too high, the reliability performance cannot meet the requirements, and the installation and maintenance are difficult
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[0020] The preferred embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0021] Such as figure 1 As shown, this example provides a power-taking and measurement switching device based on a single magnetic circuit, including: a power-taking and measurement switching module 1, a power management module 2, a measurement conditioning module 3, and a main control module 4. The power taking and measuring The measurement switching module 1 is connected to the main control module 4 through the power management module 2, the power taking and measurement switching module 1 is connected to the main control module 4 through the measurement conditioning module 3, and the main control module 4 is connected with the power-taking and measurement switching module 1 .
[0022] In this example, the output end of the single magnetic coil 5 installed on the distribution cable uses the principle of electromagnetic induction...
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The invention provides an electricity taking and measurement switching device and system based on a single magnetic loop. The device comprises an electricity taking and measurement switching module, apower supply management module, a measurement conditioning module and a main control module. The electricity taking and measurement switching module is connected to the main control module through the power supply management module. The electricity taking and measurement switching module is connected to the main control module through the measurement conditioning module. The main control module is connected with the electricity taking and measurement switching module. According to the invention, by use of electromagnetic induction, big current signals on the power distribution cables are changed into secondary small signals, so power supplying can be achieved; the secondary small signals can be used as output of a sensor for achieving measurement, i.e., through the single magnetic coil, switching of electricity taking and measurement can be highly efficiently achieved; the structure is simplified; cost and weight are effectively reduced; it is quite convenient to carry out installation and later maintenance; and measurement precision and fault discrimination ability can be further improved.
Description
technical field [0001] The invention relates to the field of power system distribution network fault monitoring, in particular to a single magnetic circuit-based power-taking and measurement switching device, and to a system including the single-magnetic circuit-based power-taking and measurement switching device. Background technique [0002] The fault monitoring device of the intelligent distribution network is generally installed directly on the distribution line of 6KV to 35KV. The installation mechanism of this type of device includes a magnetic circuit, and the secondary current of the sensor is collected through electromagnetic induction to realize the monitoring of the primary current of the transmission cable. Real-time monitoring to realize the function of measurement. However, this existing device is directly installed on the cable and lacks a power supply; adding a PT power supply method will inevitably increase the cost and space, and at the same time cause the ...
Claims
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IPC IPC(8): G01R19/00G01R15/18G01R15/20H02J5/00H02J50/10
CPCH02J5/005H02J50/10G01R15/18G01R15/20G01R19/0092
Inventor 朱奇赵天启叶志锋
Owner SHENZHEN LANHOPE ELECTRONICS