ASPEN DistriView™ is an integrated suite of voltage drop, short circuit, relay coordination, and harmonics and reliability calculation software for utility distribution systems. DistriView is designed for networks that has a mixture of 3-phase, 2-phase and single-phase network components, including unbalanced loads and shunts. The user interface is very similar to that of ASPEN OneLiner, with split windows, floating menus and a data browser. Some highlights of DistriView are these:
- Native Microsoft Windows program.
- Easy-to-use interactive graphics interface under Windows XP, Vista and Windows 7.
- Models the distribution network in the phase domain (and not in the sequence domain) for short-circuit, locked-rotor and voltage-drop (load-flow) studies.
- Handles radial or network systems. Each network can have multiple feeders. Each feeder can be fed by any number of substation buses.
- Simulate short circuits: bus faults, close-in faults, line-end faults and intermediate faults.
- Simulates lock-rotor condition for single- and 3-phase induction machines, with a variety of starting methods.
- Simulates distribution transformer faults and reports on fault current on the low side.
- Simulates voltage drop with a true 3-phase load flow algorithm.
- Short-circuit and locked-rotor studies can use a voltage-drop solution as initial condition.
- Has advanced analysis tools: stepped-event analysis, voltage sag analysis, arc-flash calculation and more.
- Has built-in harmonic analysis engine for frequency scan and harmonic load-flow solution.
- Has the ability to calculate feeder reliability.
- Has built-in calculator for overhead-lines and cable impedances. Has library of large number of commonly used conductors, pole constructions and underground cable circuits.
- Advanced network modeling:
- 2-winding transformers: Balanced 3-phase, as well as transformers that are made up of one, two or three single-phase banks with different kVA ratings and impedances.
- 3-winding transformers without fictitious buses.
- 2- and 3-way switches, circuit breakers, voltage regulators and boosters, switchable capacitors, grounding banks, and single-, 2-phase and 3-phase lines and cables.
- Spot loads and section loads modeled as a mixture of constant power, constant impedance and constant current components in voltage drop studies.
- Distributed loads: modeled as ‘section loads’ on lines and cables. The total source load can be allocated to section loads using REA, kWh and kVA methods, as well as using line length.
- Synchronous machines and synchronous condensers: Each machine can be controlled to hold constant voltage or constant power in a voltage-drop study.
- Induction generators and motors: both 3-phase and single-phase.
- Advanced relay modeling:
- Overcurrent relays, fuses, reclosers and sectionalizers: The program comes with curves for about 3000 relay, fuse and recloser types. The relay library is user modifiable.
- Distance relays: Has generic mho and quadrilateral characteristics, as well as manufacturer-specific models that mimics the fault-detection and tripping logic of commercial relays from ABB, GE, SEL, Areva, Siemens, and others.
- Has the ability to import distance-relay setting parameters from files generated by GE, SEL and other relay manufacturers.
- Has automatic coordination checking algorithms for any mix of fuses, reclosers and relays.
- Has the ability to allocate loads in a batch mode using billing data or other sources.
- Plots transformer damage curve and inrush curves automatically.
- Choice of IEC or American transformer symbols, 50 or 60 Hz, English or metric units.
- Displays results of voltage-drop, short-circuit and locked-rotor simulations graphically with color visualization of over- and under-voltage areas.
- Can output vector-graphics file that can be imported into AutoCad and similar software.
- Has capacitor placement algorithm for loss reduction.
- Can read ASPEN OneLiner data files.
- Comes with data conversion program for MutiSpeak and PTI ADEPT (PSS/U) data files.
- Proven in utilities worldwide.
