Apparatus and method for reverse power regulation with measured source side voltage
AssigneeBeckwith Electric Co., Inc.
InventorsTimothy J. Bryant, Thaichong Li
Life of this patent
Estimating the term…
Abstract
An apparatus and method for measuring the source-side line voltage from a source potential transformer (PT) of a regulator during reverse power flow. A reverse power regulation algorithm is employed during reverse power operation of the tapchanger to energize a contact relay which switches the analog voltage input from the load side to the source side of the regulator. Voltage regulation then operates based on the measured source side voltage instead of the traditional calculation of the source side voltage based upon the load-side voltage and regulator type.
Claims21
An apparatus for reverse power regulation with measured source side voltage comprising, in combination:
- a regulator for a power line, said regulator including a load potential transformer (PT) providing a load-side line voltage and a source PT providing a source-side line voltage;
- a controller including a load PT input operatively connected to said load PT providing analog load-side line voltage and a source PT input operatively connected to said source PT providing source-side line voltage;
- and
- said controller comprising a reverse-power detector that measures the real component of the current in the power line to detect reverse power flow in the power line and, upon reverse power flow, executes a reverse power regulation algorithm to provide voltage regulation based upon source-side line voltage;
- and
- said controller executes a user-selectable ignore reverse algorithm to ignore reverse operation, whereupon the controller provides voltage regulation based upon load-side line voltage.
An apparatus for reverse power regulation with measured source side voltage comprising, in combination:
- a regulator for a power line, said regulator including a load potential transformer (PT) providing a load-side line voltage and a source PT providing a source-side line voltage;
- a controller including a load PT input operatively connected to said load PT providing analog load-side line voltage and a source PT input operatively connected to said source PT providing source-side line voltage;
- and
- said controller comprising a reverse-power detector that measures the real component of the current in the power line to detect reverse power flow in the power line and, upon reverse power flow, executes a reverse power regulation algorithm to provide voltage regulation based upon source-side line voltage;
- and
- said controller executes a user-selectable block reverse algorithm to block reverse operation, whereupon the controller ceases providing voltage regulation during reverse power.
An apparatus for reverse power regulation with measured source side voltage comprising, in combination:
- a regulator for a power line, said regulator including a load potential transformer (PT) providing a load-side line voltage and a source PT providing a source-side line voltage;
- a controller including a load PT input operatively connected to said load PT providing analog load-side line voltage and a source PT input operatively connected to said source PT providing source-side line voltage;
- and
- said controller comprising a reverse-power detector that measures the real component of the current in the power line to detect reverse power flow in the power line and, upon reverse power flow, executes a reverse power regulation algorithm to provide voltage regulation based upon source-side line voltage;
- and
- said controller executes a user-selectable return-to-neutral algorithm to return a regulator's tap position to neutral when reverse power is detected.
A method for reverse power regulation with measured source side voltage comprising the steps of:
- measuring a load-side line voltage and a source-side line voltage of a regulator of a power line;
- measuring the real component of the current in the power line to detect reverse power flow in the power line;
- upon reverse power flow, providing voltage regulation based upon source-side line voltage;
- and
- obtaining user input to ignore reverse operation whereupon the step of providing voltage regulation is then based upon load-side line voltage.
A method for reverse power regulation with measured source side voltage comprising the steps of:
- measuring a load-side line voltage and a source-side line voltage of a regulator of a power line;
- measuring the real component of the current in the power line to detect reverse power flow in the power line;
- upon reverse power flow, providing voltage regulation based upon source-side line voltage;
- and
- obtaining user input to block reverse operation, whereupon the step of providing voltage regulation ceases during reverse power.
A method for reverse power regulation with measured source side voltage comprising the steps of:
- measuring a load-side line voltage and a source-side line voltage of a regulator of a power line;
- measuring the real component of the current in the power line to detect reverse power flow in the power line;
- upon reverse power flow, providing voltage regulation based upon source-side line voltage;
- and
- keeping track of the tap position of a tapchanger and returning the tap position to neutral when reverse power is detected.
Dependencies are inferred from the claim text.