* Shaded Areas Indicate Johanna and Camden Substation Service Areas * Existing DERs Are Mostly Located in the Camden Area * Real-World Site Representative of a Large Portion of SCE's Service Territory figure 3. The location of SCE's IGP. 24 SP1: Substation and Distribution SP2: Distributed Volt/VAR Control (DVVC) The operation of distribution circuits with a high penetration of DERs is becoming increasingly complicated. In many cases, distribution operators are flying blind when they need to manage and reconfigure these circuits. This subproject leverages much of the work SCE performed in the Irvine Smart Grid Demonstration (ISGD) program from 2010 to 2015. The effort includes 1) increasing the number of monitoring devices on the distribution circuit to provide better data to drive the distribution management system's (DMS) state estimation function, 2) implementing aspects of the ISGD advanced fault isolation and restoration scheme to improve overall reliability with increasing levels of DER, and 3) integrating SCE's standard substation automation system with distributed control systems to manage DERs. In addition to measurements on the distribution circuits, the direct monitoring of customer-owned PV and battery systems larger than 100 kW will be implemented and data sent directly to the DMS. All of this additional data will help SCE operators be more aware of the generation levels on the distribution system at any given time. This improved situational awareness will help operators make proper decisions when circuits containing high levels of DERs need to be reconfigured following faults or when load and DERs need to be shifted between circuits for normal operations and maintenance. Today, voltage regulation on most of SCE's circuits is through the use of capacitors connected to the circuits and in the substations. With increasing amounts of DER connected to the circuits, additional measures need to be taken to keep customer voltage at the appropriate levels. This subproject is focused on enhancing the standard DVVC scheme used as part of the ISGD program by incorporating DERs as providers of voltage regulation services. This new voltage regulation scheme will include the two CEC smart inverter projects mentioned earlier as the incorporation of voltage control of SCE- and customer-owned generation and storage systems. Control systems are being implemented that monitor voltage data from sources at customers and on the circuits and send voltage control set points to DER devices (e.g., PV inverters or battery storage systems). These systems will regulate voltage by absorbing or injecting reactive power into the circuit using the autonomous control functions being implemented as part of California's revised Rule 21 interconnection standards. This project will evaluate how new smart inverters in coordination with existing capacitors can be used to help maintain proper voltage levels on circuits. ieee power & energy magazine SP3: Distributed Energy Management Increasing amounts of DERs are being installed on distribution circuits. As more are installed, it becomes march/april 2017