Proactive Renewables Integration for Utility Distribution Planning and Operations

March 5, 2013 - 12:00pm

The interconnection process can be a laborious and expensive process for both utilities and developers. High PV penetration levels create a number of challenges for the management and operation of the utility grid. This study presents work being completed in Hawaii to improve and innovate the interconnect process, separating perceived issues from real technical concerns.  Existing interconnection methods and standards such as IEEE 1547, Hawaii Rule 14H and California Rule 21 are evaluated in emerging high penetration scenarios.  These rules define a 15% DG penetration level as a potential trigger for detailed interconnect studies.  Historically, the 15% screen for PV penetration, was selected based on probability of islanding.  Within the Hawaiian utilities, many distribution feeders by far exceed this penetration filter.  Utilities have limited demand observability at the distribution system level.  If data is available, it is often on a longer time scale than required 1 to 30 seconds or with gaps in data.  Such data can inform generation dispatch, but there is no visibility of irradiance fluctuations at this scale.   The interaction and coordination between LTC, capacitor, and inverter operations for increased PV penetration and varying operational scenarios are a concern of many system operators. Variability is not normally considered part of the interconnection study.  This issue is generally not a problem for single distribution sites, but when a large cluster or node of sites experiences highly variable cloud cover, there could be increased tap changer operations, and inverter tripping.  Ongoing work focuses on improving the interconnection process by  identifying real issues with increasing levels of PV at the distribution level versus simply assuming ”rules of thumb” that may no longer benefit the technical conditions emerging today.

Add event to Google Calendar

Announcement List

To be added to our seminar annoucement list please, email ETA Seminars. Seminars may change without notice, stay informed by joining our seminar email list. 

Site Access

For site access please email your request to ETA Seminars. To arrive at Building 90 via the LBNL shuttle, take "Blue Uphill". Click here for the shuttle schedule. To ensure your site access is set-up send your request 36 hours in advance of the seminar.

Remote Access

Not able to attend in person? Remote participants can use ReadyTalk Audio & Net conference to phone in to listen, while viewing the presentation via the ReadyTalk site.

Web Access Code: 4864835

USA & Canada call-in number:
1 (866) 740-1260
Access Code: 4864835#

International callers:
Please visit this website to see if a toll-free call-in number is available for your international location.

If not, you will need to pay for the call yourself and use this phone number:

(303) 248-0285.