Fault Detection: Power Quality is an algorithm that identifies voltage dips and spikes in your home. In a split-phase 120/240V electric panel, each leg should sustain a voltage of around 120V. This experiment identifies fluctuations outside of a normal range.
If you’ve received a notification in the Sense app about a Power Quality issue, we’d like you to share details here in the Sense Labs community. Here is an example of a correctly formatted post.
Please post Power Quality-specific project feedback below.
How to create a Power Quality post for community feedback
- Title - For the title of your new post, please label the post: Power Quality - [SUBJECT]
- Completeness - In order for the Sense community to provide feedback or insight, please share the below details when posting a Sense Labs detection to the community. Below is an example of a properly formatted submission.
- Tagging - Please make sure the entry is tagged correctly as “Power Quality”
- Consistent formatting - Please make sure you have as many of the above criteria as possible in your post so Sense community members can offer feedback or questions.
Required information to include:
How your Power issue was detected?
Did you notice anything to indicate a voltage dip or spike in your house (flickering lights, etc.)?
Voltage graph screenshot
Event Timestamp screenshot
Resources for Power Quality
Below are some initial resources for Power Quality issues. If you have suggestions for additional resources to add to this list, please reach out to @JustinAtSense.
Types of Power Quality Issues
Brief voltage dips and spikes can be harmless. You may notice voltage spikes and dips throughout the day in your home. If you are seeing a high amount of spikes and dips, please share your information with our Sense Labs community.
Voltage dips can occur when a motor in a large appliance in your home starts up (like a refrigerator), and greatly reduces the energy available for other devices. If you share the same power mains with your neighbors, you might even experience a voltage dip when a large appliance in your neighbor’s home starts up. Dips can be caused by a line-to-ground fault due to a tree falling on a power line or a lightning strike. They can also be caused by a temporary short circuit or sudden load change in utility power lines. You may notice a light flickering or a computer rebooting when a dip occurs.
Voltage spikes are the opposite of dips, but share many of the same causes such as a lightning strike or a short circuit on a utility power line. They can also occur when a large utility load is turned off resulting in voltage on the power line increasing for a short period of time, or when the utility switches power from one geographic area to another as supply and demand changes. Voltage spikes can be harmful to sensitive electronics in your home. However, using inexpensive surge protection equipment can ensure that your important devices remain safe