Project Info

Project Title 
Project Number 
Project Year(s) 
2005 - N/A

This project's goal is to obtain real-life application experience with emerging power quality mitigation technology through demonstrations at customer sites. The demonstrations will enable the project team to characterize the limitations of the technology and identify opportunities for improvement. Customers involved in demonstration projects will obtain experience with the technology and will be able to train personnel in its application.

Power quality concerns continue to be an important factor affecting the productivity of California industries. The Commission is facilitating the development of new power quality mitigation hardware for customers. This project will take the technology development into the next step of demonstration projects to obtain experience and develop expertise in the application of the technology.

This project supports the PIER program objectives of:
• Improving the Reliability/Quality of California's Electricity by developing knowledge and procedures to solve power quality problems that cause equipment failures and process disruptions.
• Improving the Energy Cost/Value of California's Electricity by reducing process inefficiency associated with power quality disturbances.

Proposed Outcomes:
1. Obtain experience and develop expertise in the application of new and emerging PQ mitigation hardware.
2. Characterize limitations and help identify opportunities for improvement of new technology developments in practical applications.
3. Develop estimates for operating and maintenance requirements as a function of the applications for the technology.

Actual Outcomes: In 2001 the project team conducted site audits to determine the best location for demonstration. In addition, the requirements for PQ mitigation were determined for those sites.

The field demonstration was conducted in 2002. The device installed was a neutral current filter. The intent of the demonstration was to determine the extent to which the device helped to conserve energy. Energy savings are possible due to the blocking of third harmonic current in the neutral conductor. This is applicable for single-phase non-linear loads supplied by a wye-connected transformer secondary. The measured results indicated that a small amount of energy savings is achieved, through the reduction of I2R losses in the neutral conductor. The payback time for the filter, based on those savings alone, was calculated. The Commission will now be able to show, for interested customers, that these filters can pay for themselves through energy savings, and also estimate how long that will take.

Status: The project will be complete in early 2003.