Intelligent breaker for solar cell component string and protecting method
A technology for solar cells and solar modules, applied in electrical components, emergency protection circuit devices, etc., can solve problems such as fire, economic loss, equipment or component damage, and achieve the effect of enhancing safety and reliability and achieving fault protection.
Active Publication Date: 2013-01-09
GCL ENERGY ENG CO LTD
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Problems solved by technology
However, in the solar power plants put into operation, there are often electrical faults in the solar module series DC system and the resulting fires
There are defects and deficiencies in the original solar module protection equipment and anti-reverse, one of the reasons is that it is impossible to determine the faults such as short circuit and electric arc to cut off the string circuit, causing damage to cables, equipment or components, reducing the utilization rate of solar energy resources, and generating Serious economic losses have affected the promotion and application of solar power generation
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[0018] The present invention will be further described below in conjunction with accompanying drawing:
[0019] Such as figure 1 , figure 2 shown figure 1 It shows a schematic flow chart of an electronic circuit breaker for solar cell module strings according to the present invention. As shown in the figure, the circuit breaker of the present invention includes: main contact 1, circuit breaker actuator 2, manual release 3, manual switch 4, voltage measurement and conditioning unit 5, current measurement and conditioning unit 6, computer Network unit 7 , communication interface unit 8 , circuit breaker state auxiliary contact 9 , drive coil unit 10 , and circuit breaker intelligent controller unit 11 . Voltage measurement and conditioning 5, current measurement and conditioning 6 are respectively connected to circuit breaker intelligent controller 11; circuit breaker intelligent controller 11 is connected to drive coil 10; drive coil 10 is connected to circuit breaker...
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The invention discloses an intelligent breaker for a solar cell component string, comprising a breaker intelligent controller (11); a voltage measuring and conditioning unit (5) and a current measuring and conditioning unit (6) are respectively connected with the breaker intelligent controller (11); a manual tripping device (3) and a manual switching device (4) are respectively connected with a breaker executing mechanism (2); the breaker executing mechanism (2) is connected with a main contact (1); and a breaker state auxiliary contact (9) is connected with the breaker intelligent controller (11). According to the intelligent breaker, the fault judgment and the switching-in / on controlling are realized by measuring the voltage and current signals of the solar cell component string, thereby realizing the fault protection of the solar cell component string such as short circuit as well as the electric signal remote detecting function of the solar cell component string; and furthermore, a requirement of installing a manual controller is taken into the consideration to enhance the safety of the solar power generation.
Description
technical field [0001] The invention relates to solar photovoltaic power generation technology and low-voltage electrical appliance technology, in particular to an intelligent circuit breaker and protection method for solar battery module strings, which can be widely applied to various power generation systems using solar module. Background technique [0002] Under the urgent situation of global warming, the deterioration of the ecological environment and the shortage of conventional energy resources, the renewable energy power generation technology constructed with various solar modules as generators has been rapidly developed and applied. However, in the solar power plants that are put into operation, there are often electrical faults in the string DC system of solar modules and the resulting fires. The original solar module protection equipment and anti-reverse have defects and deficiencies. One of the reasons is that the string circuit cannot be cut off due to faults suc...
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IPC IPC(8): H02H7/18
Inventor 徐永邦史君海邓霞王芳刘小宝沈恂如
Owner GCL ENERGY ENG CO LTD