Method and System for Effective Handling of Reverse Power Flow for On-Load Tap Changer Controller
AssigneeABB Schweiz AG
InventorsSimi Valsan, Arinjai Gupta
Life of this patent
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Abstract
A method and a system for controlling an on-load tap changer of a transformer during reverse power flow includes determining a loss ratio factor using voltage and current values for each of a primary side and a secondary side of a transformer. Further, the method comprises determining a relative strength of a first source connected to the primary side and a second source connected to the secondary side of the transformer based on the loss ratio factor. Thereafter, transmitting a control signal to an on-load tap changer of the transformer to regulate voltage on the primary side or on the secondary side of the transformer based on the relative strength of the first source and the second source.
Claims14
A method for effective handling of reverse power flow for an on-load tap changer of a transformer during reverse power flow, the method comprising:
- determining a loss ratio factor using voltage and current values for each of a primary side and a secondary side of a transformer when the power flow through a transformer reverses;
- determining a relative strength of a first source connected to the primary side and a second source connected to the secondary side of the transformer based on the loss ratio factor;
- and
- transmitting a control signal to an on-load tap changer of the transformer to regulate voltage on the primary side or on the secondary side of the transformer based on the relative strength of the first source and the second source.
A system for effective handling of reverse power flow for an on-load tap changer of a transformer, the system comprising:
- a memory,
- and
- one or more processors configured to:
- determine a loss ratio factor using voltage and current values for each of a primary side and a secondary side of a transformer when the power flow through a transformer reverses;
- determine a relative strength of a first source connected to the primary side and a second source connected to the secondary side of the transformer based on the loss ratio factor;
- and
- transmit a control signal to an on-load tap changer of the transformer to regulate voltage on the primary side or on the secondary side of the transformer based on the relative strength of the first source and the second source.
Dependencies are inferred from the claim text.