Voltage stability monitoring in power systems
US-9876352-B2 · Jan 23, 2018 · US
US10368312B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10368312-B2 |
| Application number | US-201414902285-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 30, 2014 |
| Priority date | May 30, 2014 |
| Publication date | Jul 30, 2019 |
| Grant date | Jul 30, 2019 |
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Embodiments of the present invention provide a method, a device, and a system for detecting device power. The method for detecting device power according to the present invention includes: detecting, by a monitoring terminal, power information of a monitored device; setting a monitoring time interval according to the power information and a preset time interval; and detecting the power information of the monitored device according to the monitoring time interval. The embodiments of the present invention implement that a time interval between next detection and current detection is determined according to detected power information, which can fully save resources without affecting use of a user.
Opening claim text (preview).
What is claimed is: 1. A method for detecting device power comprising: detecting, by a monitoring terminal, power information of a monitored device; setting, by the monitoring terminal, a monitoring time interval according to the power information of the monitored device and a preset time interval; and detecting, by the monitoring terminal after setting the monitoring time interval, the power information of the monitored device according to the monitoring time interval; wherein, prior to setting the monitoring time interval, the power information of the monitored device is detected at two consecutive times; wherein setting the monitoring time interval further comprises: calculating a power decline rate of the monitored device according to the power information of the monitored device detected at the two consecutive times and the preset time interval; comparing the calculated power decline rate to a preset power decline rate; and setting the monitoring time interval to be greater than the preset time interval in response to the calculated power decline rate being less than the preset power decline rate, or setting the monitoring time interval to be less than the preset time interval in response to the calculated power decline rate being greater than the preset power decline rate. 2. The method according to claim 1 , wherein before setting the monitoring time interval, the method further comprises: dividing a power range into different power intervals; and determining, according to the power information of the monitored device, a power interval corresponding to a current power level of the monitored device. 3. The method according to claim 2 , wherein the power intervals comprise a high-level power interval and a low-level power interval, wherein a minimum power value of the high-level power interval is greater than a preset power threshold and a minimum power value of the low-level power interval is less than the preset power threshold; and wherein determining that the power interval corresponding to the current power level of the monitored device is the high-level interval corresponds to setting the monitoring time interval to be greater than the preset time interval and determining that the power interval corresponding to the current power level of the monitored device is the low-level interval corresponds to setting the monitoring time interval to be less than the preset time interval. 4. The method according to claim 1 , wherein the power information of the monitored device comprises a use frequency of the monitored device; and wherein setting the monitoring time interval further comprises: comparing the use frequency indicated by the power information of the monitored device to a preset use frequency; and setting the monitoring time interval to be less than the preset time interval in response to the use frequency indicated by the power information of the monitored device being higher than the preset use frequency; or setting the monitoring time interval to be greater than the preset time interval in response to the use frequency indicated by the power information of the monitored device being lower than the preset use frequency. 5. The method according to claim 1 , wherein detecting the power information of the monitored device further comprises: sending, by the monitoring terminal, a query request for the power information of the monitored device to the monitored device. 6. The method according to claim 1 , wherein after detecting the power information of the monitored device according to the monitoring time interval, the method further comprises: determining, by the monitoring terminal according to the power information of the monitored device and a preset power threshold, whether to provide an alarm; or sending, by the monitoring terminal, the monitoring time interval and the preset power threshold to the monitored device to enable the monitored device to detect the power information of the monitored device according to the monitoring time interval, and determine, according to the power information of the monitored device and the preset power threshold, whether to provide an alarm. 7. A monitoring terminal comprising: a transmitter configured to send a query request to a monitored device; a receiver configured to receive power information of the monitored device from the monitored device; a non-transitory memory configured to store processor-executable instructions; and a processor configured, based on execution of the processor-executable instructions stored on the non-transitory memory, to: detect the power information of the monitored device; set a monitoring time interval according to the power information of the monitored device and a preset time interval; and detect, after setting the monitoring time interval, the power information of the monitored device according to the monitoring time interval; wherein the processor is further configured to: detect the power information of the monitored device at two consecutive times prior to setting the monitoring time interval; calculate a power decline rate of the monitored device according to the power information of the monitored device detected at the consecutive two times and the preset time interval; if the power decline rate of the monitored device is less than a preset power decline rate, set the monitoring time interval to be greater than the preset time interval; and if the power decline rate of the monitored device is greater than the preset power decline rate, set the monitoring time interval to be less than the preset time interval. 8. The monitoring terminal according to claim 7 , wherein the processor is further configured to: divide a power range into different power intervals; and determine, according to the power information of the monitored device, a power interval corresponding to a current power level of the monitored device. 9. The monitoring terminal according to claim 8 , wherein the power intervals comprise a high-level power interval and a low-level power interval, wherein a minimum power value of the high-level power interval is greater than a preset power threshold and a minimum power value of the low-level power interval is less than the preset power threshold; and wherein the processor is further configured to: if the power interval corresponding to the current power level of the monitored device is the high-level power interval, set the monitoring time interval to be greater than the preset time interval; and if the power interval corresponding to the current power level of the monitored device is the low-level power interval, set the monitoring time interval to be less than the preset time interval. 10. The monitoring terminal according to claim 7 , wherein the power information of the monitored device comprises a use frequency of the monitored device; and wherein the processor is further configured to: when the use frequency indicated by the power information of the monitored device is higher than a preset use frequency, set the monitoring time interval to be less than the preset time interval; and when the use frequency indicated by the power information of the monitored device is lower than the preset use frequency, set the monitoring time interval to be greater than the preset time interval. 11. The monitoring terminal according to claim 7 , wherein the processor is further configured to: determine, according to the power information of the monitored device and a preset power threshold, whether to provide an alarm; or send the monitoring time interval and the preset power threshold to the monitored device to enable the monitored device to detect the po
controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day · CPC title
detecting a user operation or a tactile contact or a motion of the device · CPC title
involving only voltage measurements · CPC title
managing power supply demand, e.g. depending on battery level · CPC title
by using digital technique · CPC title
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