Georgia Power

About: Georgia Power is a company organization based out in Atlanta, Georgia, United States. It is known for research contribution in the topics: Electric power transmission & Voltage. The organization has 73 authors who have published 66 publications receiving 932 citations. The organization is also known as: Georgia Railway and Power Company.

Electrical Features of the Wallace Dam Pumped Hydro Project

Abstract: The Wallace Dam Pumped Hydro Project was placed in full commercial operation in December 1980. This paper describes the significant features of this combination run-of-river and pumped storage project. Full-voltage, across-the-line starting is used for the 83,000 hp motors, making this the largest known unit using this starting method. The control system, using hard-wired, relay logic is also described.

Vibracode System of Supervisory Control on a Carrier Communication Channel

Abstract: Besides providing a high-grade 2-way telephone circuit, this carrier current system used by the Georgia Power Company transmits control signals for operating voltage regulator and capacitor switches, alarm signals when oil circuit breakers trip or tap-changing-under-load transformers get out of step, and telemetered voltage signals

Considerations for connecting photovoltaic solar plants to distribution feeders

Abstract: This paper discussed challenges faced and lessons learned when integrating distributed generation, in particular exporting photovoltaic solar installations. Challenges discussed are related to protection, modelling, communications and synchronization. Lessons learned from field installations suggest specific test setups and procedures to prevent undesirable behaviors during operation. Given these complexities no ‘one fits all’ solution exists, and each case and application require individual analysis for selecting the best solution. For further enhancements leading to maturity of this technology collective industry-wide knowledge exchange is highly encouraged.

Pseudorandom Coding for Improved Antenna Range Measurements

Abstract: The autocorrelation function for pseudorandom binary codes is such that these codes are ideal for suppressing unwanted reflections on antenna ranges. The method presented here depends on amplitude modulating the transmitted signal with a maximum-length linear recurring modulo-two sequence (PN code) and correlating it at the receiver with a delayed version of the code. In this way reflections whose path transit times are greater than 1 bit time from the direct path transmission time are reduced in amplitude by a factor inversely proportional to the length of the code word. Also presented is a simple means for generating the maximum-length shift-register codes using delay lines and mixers that makes this method especially practical for most antenna range applications.

Mitigating System Impacts of Energization of Large Power Transformers of a Nuclear Plant

Abstract: Direct energization of large power transformers from a utility grid can be expected to result in high magnitude inrush currents to be drawn from the grid that may take several seconds to decay. The phenomenon was verified and characterized by evaluating measurements that captured energization of a large Generator Step-up transformer (GSU) in an existing nuclear facility. The highly reactive and unbalanced nature of these inrush currents means that they have the potential to cause several undesirable system and facility impacts including protective relay maloperations, significant system voltage changes and electromagnetic torques on nearby operating generating units. A comprehensive time-domain modeling and simulation study was carried out to evaluate these concerns for new nuclear units being developed by Southern Company at Vogtle Nuclear Plant (NP) in Augusta, Georgia. The AP1000 nuclear reactors to be used have a design based on a generator breaker for unit synchronization which allows large GSU and Unit Auxiliary Transformers (UATs) to be energized from the transmission grid instead of the conventional practice of energization with the generator as it builds voltage prior to synchronization with the transmission grid. To mitigate the potential system impacts, several solutions were researched and evaluated and the most optimal solution for this application in the form of Pre-Insertion Resistors (PIR) switching was identified.