Batch and Capacity Management

The VariSim Batch and  Capacity Management applications provide information to the operator to manage product transfer effectively and ensure security of supply

Batch Management

The Batch Management facility comprises three main functions – Batch Scheduling to schedule the batch delivery process, Batch Tracking to track the products as they traverse the pipeline and Batch Predictive to predict the movement of scheduled batches. Each can be easily expanded to include more complex management functions.

Batch Scheduling

The VariSim Batch Scheduling process provides a high level of control before the transfer of batches occurs. It allows you to pre-define the sequence of batches to be delivered in a schedule that clearly identifies the volume to be transported, its destination, customer details and its type. This process incorporates easy to use tools that allow quick definition of the schedule through drop down menus and sorting and sequencing algorithms.

Batch Tracking

Once the schedule is defined and submitted, the volumes of product entering the pipe can be monitored in accordance with the schedule with over-delivered and under-delivered volumes clearly identified to the operator. The batches are tracked in the physical sense by the VariSim simulator, and the progress of each batch can be accurately monitored as it progresses through the pipeline or network. Estimated times of arrival are continually provided for any defined locations on the pipeline or network. Virtual batch volumes and stripped batch volume can be monitored for efficient transfer of batches to the pipeline customers.

Batch Predictive

The Batch Predictive functions take the schedule and predict the future movements of batches through the pipeline using an offline VariSim simulator. The operator is able to specify pump statuses, tank starting conditions and variable supply / demand requirements that will continue to exist over the duration of the batching process in addition to the set-points of any control valves. Predictive simulations use the batch schedule as an input to the predictive process to determine the movement of the batches over the batching timeframe.

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Capacity and Storage Management

There are three levels to the standard Capacity and Storage Management process which can be easily expanded to include more complex management functions.

Current inventory distribution is available directly from the VariSim simulator and can be made available to an offline predictive simulator. At each supply or customer demand, pre-defined future flow or pressure variations can be used to drive the simulator. These variations can be nominations, fixed values or user input, or they may be taken automatically from historical input, load forecasting tools or optimiser output.

Rapid simulations are then conducted to establish the future inventory distribution, storage levels, future flow, pressure and temperature profiles and the variation in the available capacity and storage levels.

Alarms are raised if zone inventories exceed or fall below allowable limits or if maximum or minimum allowable operating pressures are exceeded. Actual storage variation can be monitored against the predicted storage variation and at any stage you can change the future flow variations to predict available capacity and storage variance.

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Pipeline Management Systems


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Batch and Capacity Management

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