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Automatically voltage-loss missing electric-energy recording method and its multifunctional electric-energy gauge

An automatic recording and electric energy meter technology, applied in the measurement of electrical variables, measuring devices, instruments, etc., can solve the problems of voltage loss of electric energy meters, not knowing the size of the electricity load, etc., to achieve the effect of improving accuracy

Inactive Publication Date: 2008-10-22
浙江晨泰科技股份有限公司
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Problems solved by technology

However, after the fuse is blown, the electric energy meter will lose pressure, which is one of the main faults of the high-voltage metering device.
In order to make up for the electric energy leaked by the watt-hour meter when the voltage is lost, a voltage-loss timer is generally used to record the time of the voltage-loss fault, but time is only a quantity, and only the time of voltage loss is known. Don't know the size of the power load, power factor, etc. when the user loses voltage

Method used

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  • Automatically voltage-loss missing electric-energy recording method and its multifunctional electric-energy gauge
  • Automatically voltage-loss missing electric-energy recording method and its multifunctional electric-energy gauge
  • Automatically voltage-loss missing electric-energy recording method and its multifunctional electric-energy gauge

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Embodiment Construction

[0041] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0042] A method for automatically recording the electric energy of a pressure loss meter, such as figure 1 , figure 2 , containing at least:

[0043] (1) Electric energy meter data collection circuit H collects voltage and current signals on the load circuit, and inputs the above signals to the analog input interface of the single-chip microcomputer;

[0044] As shown in Figure 3 and Figure 10, the voltage of the high-voltage power supply system passes through the insurance and the high-voltage metering voltage transformer (TV1) to change the high voltage, that is, the primary voltage, into a low voltage, that is, the secondary voltage, and the current passes through the high-voltage metering current transformer (TA1) Change the primary current into a secondary current, and then introduce it to the analog input interface of the single-chip mi...

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Abstract

A method for automatically recording drain logging (DL) electric energy of under-voltage includes collecting voltage and current signals of load circuit, sampling alternation signal of voltage and current in each period, converting said signal to be digital value by A / D conversion circuit, calculating out actual active W and reactive Q by logic circuit, judging whether any phase in three phases is on open-phase or not and calculating out active W' and reactive Q' at phase-on time as per deviation principle if it is then calculating out DL active W' - W and reactive Q' - Q. The multifunction electric energy meter is also disclosed.

Description

【Technical field】 [0001] The invention relates to a method and an electric energy meter for automatically recording the electric energy of a voltage loss meter, which are usually used in a method and a device for measuring active electric energy and reactive electric energy in a power system. 【Background technique】 [0002] In the high-voltage electric energy metering device, in order to isolate the fault of the voltage transformer, a fuse is installed on the primary side of the voltage transformer. However, after the fuse is blown, the electric energy meter will lose pressure, which is one of the main faults of the high-voltage metering device. In order to make up for the electric energy leaked by the watt-hour meter when the voltage is lost, a voltage-loss timer is generally used to record the time of the voltage-loss failure, but time is only a quantity, and only the time of voltage loss is known. I don't know the size of the power load, power factor, etc. when the user ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R11/17G01R11/20G01R11/02
Inventor 陈劲游
Owner 浙江晨泰科技股份有限公司
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