Microwave self-heating power cable and de-icing device applying same
A power cable and microwave generating device technology, applied in the field of power cables, can solve the problems of no thermal energy conversion, inability to melt cable icing, and inability to solve power line icing, so as to increase reliability and reduce indirect economic losses.
Inactive Publication Date: 2012-03-07
星际漫步(北京)航天科技有限公司
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Problems solved by technology
The loss of the coaxial cable itself is very small, and it can almost be considered that microwaves can propagate without loss in the coaxial cable. According to the principle of energy conservation, there is no power loss, and there is no heat energy conversion. , unable to melt the icing on the cable, it is also unable to solve the problem of melting ice on the power line
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[0040] figure 1 It is a system block diagram of a device that uses power cable heating with a "microwave energy-thermal energy" conversion function to eliminate ice coating on power lines. For the device of the present invention that utilizes a power cable with a "microwave energy-thermal energy" conversion function to heat and eliminate power line icing, the entire device is composed of the following sub-devices: a power cable with a "microwave energy-thermal energy" conversion function (1) , a microwave transmission device (2), a microwave generating device (3), an ice coating thickness detection device (4), a backup power supply device (5), and a power supply device (6) (7).
[0041]The microwave generating device (3) is connected to the power cable (1) with the conversion function of "microwave energy-heat energy" by a microwave transmission device (2); the power cable (1) with the conversion function of "microwave energy-heat energy" is as follows: image 3 The electric...
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The invention relates to a power cable capable of converting microwave energy into heat energy, and a device for solving de-icing problem of power lines by applying the cable. The power cable capable of converting microwave energy into heat energy has three basic functions of 50Hz power frequency electricity current transmission, microwave power signal transmission and conversion from microwave energy to heat energy, wherein the 50Hz power frequency electricity current and the microwave power signal can be transmitted on the cable simultaneously without interfering each other. The heat energyproduced by the cable is completely provided by the microwave power signal, and the 50Hz power frequency electricity current is transmitted on the cable without consumption. The device for solving thede-icing problem of power lines by applying the cable consists of a microwave generation device, a microwave transmission device, an ice-coating thickness sensing device and a power device. The device can monitor ice conditions under unattended state and supply microwave energy during de-icing period for the power cable capable of converting microwave energy into heat energy to produce heat energy, so as to heat coating ice on the power lines.
Description
technical field [0001] The invention relates to a power cable with a "microwave energy-heat energy" conversion function, and a device for solving the ice-melting problem of a power line by using the cable when a freezing rain disaster occurs. During the application of the invention to the power line melting operation, the 50Hz power frequency power supply of the power grid does not need to be interrupted. technical background [0002] In 2008, the large-scale low-temperature freezing rain weather that hit central and southern China caused a large-scale power pylon collapse accident in the Southern Power Grid, resulting in interruption of power supply in the affected areas, suspension of railway electric locomotives, and direct economic losses of 150 billion yuan. The root cause is that the low temperature and freezing rain for several days in a row caused the weight of ice coating on the power network line to exceed the design load limit of the power network line, which crus...
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IPC IPC(8): H01B9/00H01B7/42H02G7/16
Inventor 康迪刘海涛
Owner 星际漫步(北京)航天科技有限公司