PRISM Advanced DMS



Today’s utilities recognize that customers have different needs, and are acutely aware of the definition of “service reliability” as it pertains to various customer classes.  Each of these customer types may require a different type of solution to deliver the expected level of service and power quality.  The proliferation of intelligent devices and sensors on the network, and the wide-scale deployment of smart meters also demand an operational system that provides a more holistic and efficient view of the network in real-time.  And the increasing penetration of distributed generation and renewable energy sources presents its own particular set of challenges in the operation of a stable and secure grid.  As a result, a unique blend of network modeling, automation and analysis tools is needed—one that transcends the typical distribution SCADA system, and even the traditional idea of distribution management. 


What today’s utility demands is Advanced Distribution Management—combining real-time data acquisition, distribution automation, system analysis and outage management into a true Smart Grid operations system.  When disparate systems are implemented to achieve these functions, less than optimal interfaces and integration methods can yield undesirable results. That is why a common, integrated platform for advanced DMS is now the solution of choice.


ACS offers one of the most advanced and integrated suite of applications available today for distribution network management.  Our PRISM advanced DMS, which is based on more than 30 years of experience delivering “mission critical” real-time systems with an open architecture design, features maximum reliability and availability, and offers several key advantages over competing solutions:

•a fully-integrated single database and network model, using the GIS and available planning data as the source

•a full suite of advanced applications for visualization, optimization, analysis and operation

•a completely integrated OMS suite that eliminates the need for costly and complex interfaces for data transfer between different SCADA/DMS/OMS platforms

•a unified and comprehensive user interface, providing safer and more efficient system control

•a high-performance real-time engine for all Smart Grid functions, designed to deliver when you need it most 

•a sophisticated simulator platform that enables training of operators and other personnel based on realistic operational scenarios and actual events captured from the operating system

Model Building


Effectively monitoring and managing the distribution system using today’s advanced DMS applications involves a sophisticated electrical model that is more complex than those needed for static, balanced transmission systems.  Real-time power flow and load estimation for an unbalanced, three-phase network must incorporate telemetered data from a variety of sources on the system, along with information from GIS and planning models.

Learn More >

Topology Processor

Smart Grid distribution management and distribution automation functions and applications all rely on an accurate model of the state of the network. Rather than each application determining the network state or network topology, the Topology Processor (TP) calculates the current real-time state to be used by all of the applications as well as by the user interface to colorize the network maps.

Learn More >


Fault Detection, Isolation & Restoration

The PRISM Fault detection, isolation and restoration (FDIR) application is designed for automated fault handling on distribution systems with radial or open loop configurations. The distribution system can consist of feeder sections with three phases, two phases or single phase.

Learn More >

Integrated Volt/VAR Control

The primary objective of the Integrated Volt/VAR Control (IVVC) function is to reduce electric feeder losses while minimizing distribution voltage within acceptable operating limits. The controls used to achieve these objectives are transformer Load Tap Changers (LTCs), substation and feeder capacitor bank controls plus substation and feeder voltage regulators.

Learn More >


Optimal Capacitor Placement

The Optimal Capacitor Placement (OCP) application is a study mode function that directly connects to the DASdb and the RTDB. The objective of OCP is to minimize feeder losses while maintaining the capacitor bank voltages and power factors within given limits.

Learn More >

Intelligent Switching

Similar to the Optimal Switch Plan application, the Intelligent Switching (ISW) application provides the capability to generate various switch plans for both planned and unplanned operational situations. It is expected that these switch plans will be generated on an ad hoc basis by the dispatcher, or generated as scheduled switching operations.

Learn More >

Optimal Switching

The Optimal Switching (OSW) application is designed to generate recommended switch plans to reconfigure a distribution system in order to meet a specified optimization objective with regards to operation.

Learn More >


Distribution Load Flow

The PRISM dispatcher distribution load flow (DLF) is used as a dispatcher query tool for ad-hoc load flow queries, as a planning tool for in-depth network analysis, and as a basis for many advanced distribution analysis / automation applications such as Short Circuit Analysis, Switch Order Optimization, Fault Detection Isolation and Restoration, etc. The PRISM DLF operates from the same network model as that created by DASmap for all advanced applications.

Learn More >

Real-time Study Mode

PRISM DMS provides two different analysis modes:  Real-time and Study.  Each mode is independent of the other mode, i.e., changes made by one user in one analysis mode do not affect the other user in study mode.  In study mode the user can operate various devices and observe the effect on the system through topology processor or by running a load flow and viewing the results.

Learn More >

Short Circuit Analysis

Short Circuit Analysis (SCA) calculates fault current sources to fault points, using programmable criteria for theoretical or reconstructed situations and scenarios. SCA uses the same solution algorithm as Distribution Power Flow (DPF), representing all loads, capacitor banks and short circuit faults as constant impedances. Source voltages behind the internal impedances are calculated based on the DPF solution.

Learn More >

Protection Coordination

Protection Coordination (PCN) provides the system operation engineer and dispatcher a tool to review, edit or analyze the protective device settings. The protective devices include relays, reclosing relays and fuses. PCN presents to the dispatcher the actual “time-current” curves of protective devices along the feeder for graphical analysis and manipulation based on known fault currents.

Learn More >

Load Estimator

Load Estimation (LE) is a function used to estimate individual loads on a feeder based on load classes, load type, load curve, and load measurements.

Learn More >



GridVu is a geographical product which is designed to provide general DMS and OMS incident summary and location information via the internet to utility personnel and to the public.

Learn More >

ReShape Schematic Generator

PRISM DMS and OMS support both a dynamic geographic based view of the network diagram and a schematic based view for switching, tagging etc. Both types of views can be drawn using DASmap and linked to the network model for dynamic topology colorization. However, the PRISM system also supports an automatically generated schematic view of a selected feeder using an optional application called ReShape.

Learn More >

Real-time Redline

Real-time Redline is an application that enables the dispatcher/operator to maintain changes to the network connectivity directly through the dispatcher/operators user interface. Not all changes to the network connectivity are a result of planned changes, such as those resulting from storm damage.

Learn More >

Enterprise Reporting

PRISM Portal

The ACS PRISM Portal solution is an integrated set of applications designed to deliver a broad range of information, graphics, and data not only satisfying the needs of all functional departments within the utility enterprise, but also answering the expectations of demanding users in an ad-hoc manner. Built 

Learn More >

System Simulator


ThXpertSim™ from ACS is a breakthrough in dynamic distribution system simulation that can be used for system optimization/planning as well as dispatcher training with real-life system scenarios. With its innovative applications, utilities can achieve cost savings and operating performance increases previously considered unattainable.

Learn More >


Distributed Energy Resources Management System suite

The ACS Distributed Energy Resources Management System (DERMS) offers this flexibility, enabling communication between the various devices necessary to accomplish the coordinated optimization of the feeder controlling devices..


Learn More >

More Information

For more information call 800.831.7223 or contact This email address is being protected from spambots. You need JavaScript enabled to view it.



PRISM Advanced DMS Brochure PDF


ACS PRISM Advanced DMS Product Brochure