Introduction

In this demonstration, we are going to demonstrate the Interdependent Network Analysis to compute the connection loss and service flow reduction of an interdependent network composed of an electric power network and water network. Alternatively, we could also compute the connection loss and service flow reduction for an electric power network and gas network.

Tutorial Example

This advanced tutorial is going to look at how the damage to one utility (a power network) could effect another utility (water network) that might rely on the power network to run, for example, water pumps. Because of this interdependency, looking at the physical damage to the water network is not enough to determine if it can still operate at full capacity after an earthquake event. Using the Interdependent Network Analysis, we can determine connection loss and service flow reduction. To get started, we will need to create a new scenario.

Create Scenario

• If you have not already done so, launch the MAEviz application.
• Go to File -> New Scenario and this should bring up the new scenario dialog.
• Create a scenario with Shelby County, Tennessee as your region of interest and choose the MAEviz 3.1.1 Analysis Defaults as your default set. If you have been following other tutorials you might want to provide the scenario a name such as INA Shelby County.
• After doing this, click Finish to create the new scenario.

Interdependent Network Analysis

First, we will need to determine the physical damage to our water network. To do this, go through the following steps:

• Click on the Execute Analysis () icon to bring up the Execute Analysis wizard.
• Expand the Lifeline category and select Water Utility Network Damage Analysis. Click the Finish button.
• This should bring up the analysis graph for the Water Utility Network Damage Analysis. To bring up the form page, click on the water utility network damage box in the graph.
  1. For the Result Name field, specify a name such as Water Network Damage for INA.
  2. For the Water Network field, click the Search ( ) button and find the dataset named Memphis Water Utility Network for INA and click the Finish button.
• For the Hazard field, click the Create button to add the Create Scenario Earthquake box to the analysis graph. Click on the box to bring up the form page.
  1. For the Result Name field, specify a name such as Memphis 7.3 Scenario Earthquake.
  2. For the Magnitude field, specify 7.3.
• Go back to the Water Utility Network Damage Analysis form page so we can fill in the last few required fields.
  1. Under Advanced Parameters you will find the Pipeline Fragilities field. Click the Search ( ) icon and find the dataset called Buried Pipeline Fragilities v1.1 and click the Finish button.
  2. For the Pipeline Fragility Mapping field, click the Search ( ) icon and find the dataset called Buried Pipe Fragility Mapping 1.2.
  3. Click the Execute button to run the analysis.

Now that we have determined the damage to the water network, let's do the same for the power network.

• Click on the Execute Analysis () icon to bring up the Execute Analysis wizard again.
• Expand the Lifeline category and select Electric Power Utility Network Damage (Hazus Style). Click the Finish button.