Rapid pressure rise detection and management system
AssigneeQualitrol Corporation
InventorJohn R. Piper
Life of this patent
Estimating the term…
Abstract
A rapid pressure rise detection and management system that detects internal pressure changes in a transformer. The rapid pressure rise detection and management system communicates with one or more pressure sensors attached to a tank of the transformer and measures the rate of pressure change versus time. The rapid pressure rise detection and management system then compares this rate of pressure change against a set of parameters to determine if this pressure change is an internal fault requiring the transformer to be taken offline or external fault to be ignored. This rapid pressure rise detection and management system may be a standalone device or work with other monitoring/controlling equipment to expand its sensing and management capabilities.
Claims34
A rapid pressure rise relay system for detecting a pressure rise within a transformer, the system comprising:
- one or more pressure sensors associated with the transformer, the one or more pressure sensors generating electrical outputs in response to pressure changes within the transformer;
- a seismic sensor that measures seismic activity and generates an electrical output in response to the seismic activity;
- a relay that includes one or more electrically controlled actuation contacts to take the transformer offline;
- one or more processors in communication with the one or more pressure sensors, one or more auxiliary transformer components associated with the transformer, the seismic sensor, and the relay, wherein the one or more auxiliary transformer components each generate an electrical output that identifies a status;
- a control system having a memory device storing a set of instructions that, when executed by the one or more processors, causes the one or more processors to:
- examine the electrical outputs generated by the one or more pressure sensors;
- calculate the pressure rise within the transformer over time using the electrical outputs generated by the one or more pressure sensors;
- compare the calculated pressure rise within the transformer over time to one or more rapid pressure rise curves;
- identify the status of the auxiliary transformer components that cause internal pressure readings and compensate for the internal pressure readings from the auxiliary transformer components to prevent unnecessary relay actuation;
- identify seismic activity using the seismic sensor and prevent unnecessary relay actuation from the seismic activity;
- and
- actuate the relay and take the transformer offline if the calculated pressure rise within the transformer over time exceeds allowable limits set by the one or more rapid pressure rise curves.
A rapid pressure rise relay system for detecting a pressure rise within a transformer, wherein the transformer contains one or more pressure sensors generating electrical outputs in response to pressure changes within the transformer, the system comprising:
- one or more processors in communication with the one or more pressure sensors, auxiliary transformer components, a seismic sensor, and a relay;
- a control system having a memory device storing a set of instructions that, when executed by the one or more processors, causes the one or more processors to:
- examine the electrical outputs generated by the one or more pressure sensors;
- calculate the pressure rise within the transformer over time using the electrical outputs generated by the one or more pressure sensors;
- compare the calculated pressure rise within the transformer over time to one or more rapid pressure rise curves;
- identify a status of the auxiliary transformer components that cause internal pressure readings and compensate for the internal pressure readings from the auxiliary transformer components to prevent unnecessary relay actuation;
- identify pressure readings caused by seismic activity using the seismic sensor and compensate for the pressure readings caused by the seismic activity to prevent unnecessary relay actuation;
- and
- actuate the relay and take the transformer offline if the calculated pressure rise within the transformer over time exceeds allowable limits set by the one or more rapid pressure rise curves.
A rapid pressure rise relay system for detecting a pressure rise within a transformer, wherein the transformer contains one or more pressure sensors generating electrical outputs in response to pressure changes within the transformer, the system comprising:
- one or more processors in communication with the one or more pressure sensors, auxiliary transformer components, a seismic sensor, and a relay;
- a control system having a memory device storing a set of instructions that when executed by the one or more processors, causes the one or more processors to:
- examine the electrical outputs generated by the one or more pressure sensors;
- calculate the pressure rise within the transformer over time using the electrical outputs generated by the one or more pressure sensors;
- compare the calculated pressure rise within the transformer over time to one or more rapid pressure rise curves;
- identify pressure readings caused by non-internal arcing events and compensate for the pressure readings caused by the non-internal arcing events to prevent unnecessary relay actuation;
- and
- actuate the relay and take the transformer offline if the calculated pressure rise within the transformer over time exceeds allowable limits set by the one or more rapid pressure rise curves.
Dependencies are inferred from the claim text.