Electric vehicle recognition method and device based on electric quantity

Abstract

The invention discloses an electric vehicle recognition method and device based on electric quantity. The method comprises the following steps: acquiring a current waveform and a voltage waveform of amain loop of a power consumer; judging whether the current variation in the circuit of the power consumer exceeds a set variation value or not according to the current waveform; if yes, judging whether the stable time duration that the current variation of the power consumer exceeds the set variation value reaches the set time duration or not; if yes, judging that the current variation of the power consumer is triggered by an electric appliance event; acquiring electric appliance quantity characteristics of a circuit user main loop through the current waveform and the voltage waveform; judging whether the electric appliance event is an electric vehicle event according to the electric appliance quantity characteristics. Whether an electric vehicle is used in a power consumer or not can beaccurately obtained. The system can provide a timely and accurate electric vehicle charging state for a user without entering a power consumer house, provides a basis for checking and renovating potential safety hazards of power utilization, and is low in cost.

Description

technical field [0001] The invention relates to the field of identification of household appliances, more specifically to an electric vehicle identification method and device based on electrical quantity. Background technique [0002] Now household electricity consumption has become an important part of social electricity consumption. With the large-scale popularization of household electric vehicles, electric vehicles also have many safety accidents, mainly because some electric vehicle chargers are unqualified electrical equipment, or circuit It is an inferior product, which is likely to cause dangers such as fire when charging. Indoor fires can easily cause surrounding objects to catch fire, which will cause great losses and casualties if they are not found in time. [0003] At present, electricity safety is the primary condition and research focus of intelligent electricity solutions. Unsafe electricity use behavior is the main cause of personal injury and property loss...

AI Technical Summary

Problems solved by technology

[0004] At present, the monitoring of user load status data mainly relies on installing a large number of electrical appliance status monitoring and sensing devices inside the user to identify the status of electrical appliances, which not only interferes with the lives of users, but also requires a lot of time for installation and maintenance. And money, hardware maintenance costs are also high, and the high cost of monitoring devices has also brought economic problems. It is difficult to popularize among electric residential users. Therefore, the use of electrical status monitoring and sensing devices to identify electrical status has great limitations. sex

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