Electronic watt-hour meter
An electric energy meter, electronic technology, applied in the field of electric energy meter, can solve problems such as three-phase load imbalance, and achieve the effect of improving safety
Inactive Publication Date: 2018-07-10
NANJING DIANRUN TECH
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- Application Information
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Problems solved by technology
[0005] In order to solve the problem of unbalanced three-phase load in the low-voltage power grid in the prior art, the embodiment of the present invention provides an electronic energy meter
Method used
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[0024] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
[0025] figure 1 It is a schematic structural diagram of an electronic electric energy meter according to an exemplary embodiment of the present invention. like figure 1 As shown, the electronic energy meter 10 includes a first incoming terminal 11, a second incoming terminal 12, a third incoming terminal 13, a commutation device 20 and a processor 30, wherein:
[0026] The first incoming terminal 11 is used to connect with the first phase wire, the second incoming terminal 12 is used to connect to the second phase wire, the third incoming terminal 13 is used to connect to the third phase wire, the first The phase line, the second phase line and the third phase line form a three-phase power supply;
[0027] The first input terminal of the c...
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The present invention discloses an electronic watt-hour meter, belonging to the technical field of watt-hour meters. The watt-hour meter comprises a first incoming line terminal connected with a firstphase line, a second incoming line terminal connected with a second phase line, a third incoming line terminal connected with a third phase line, a commutation device and a processor. A first input terminal of the commutation device is connected with the first incoming line terminal, a second input internal of the commutation device is connected with the second incoming line terminal, a third input terminal of the commutation device is connected with the third incoming line terminal, and a first output terminal conducting with a first output terminal, a second output terminal conducting witha second output terminal and a third output terminal conducting with a third output terminal in the commutation device are connected with a single-phase load; and a control terminal of the commutationdevice is connected with the processor. The problem is solved that three-phase load is not balance in the low-voltage power network in the prior art.
Description
technical field [0001] The invention relates to the technical field of electric energy meters, in particular to an electronic electric energy meter. Background technique [0002] The three-phase balance of the low-voltage power grid has always been one of the main problems that plagued power supply units. Most of the low-voltage power grids are powered by a three-phase four-wire system after being stepped down by a 10 / 0.4KV transformer. The power supply network for load mixed power consumption. [0003] When installing single-phase users, the power supply department should evenly tap the single-phase load on the three-phase A, B, and C. However, in actual work and operation, the signs of the line, the negligence of the power connection personnel, coupled with the uncontrollable capacity expansion of single-phase users, the access of high-power single-phase loads, and the asynchrony of single-phase load power consumption, etc. and other problems, resulting in the problem of...
Claims
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IPC IPC(8): G01R11/04G01R11/02
CPCG01R11/02G01R11/04
Inventor 沈镇炜周旋朱海双樊腾化杨海方朱蓬辉
Owner NANJING DIANRUN TECH