Assessment 3 Requirements Modeling: Power Generation and Data Analysis

This report delves into the requirements modeling of a power generation and data analysis system. It presents a comprehensive analysis of the system's functionality through use case diagrams, brief and full use case descriptions, and an activity diagram. The report further identifies and defines business objects, including entity, boundary, and control objects, and culminates in a domain class diagram that visually represents the relationships between these objects. This report provides a detailed understanding of the system's requirements and serves as a foundation for further development.

Assessment 3 Requirements Modeling

Table of Contents
Introduction.................................................................................................................................................3
Set of Fully Described Use Cases................................................................................................................4
Use case 1................................................................................................................................................4
Brief Use Case Description 1...................................................................................................................5
Use Case 2...............................................................................................................................................6
Brief Use Case Description 2...................................................................................................................6
Full Use Case Description.......................................................................................................................7
Activity diagram..........................................................................................................................................9
Combined set of Business Objects.............................................................................................................10
Entity Objects........................................................................................................................................10
Boundary Objects..................................................................................................................................11
Control Objects......................................................................................................................................12
Domain Class Diagram..............................................................................................................................13
Conclusion.................................................................................................................................................14
References.................................................................................................................................................15
List of Figures
Figure 1- Use Case1....................................................................................................................................4
Figure 2- Use Case 2...................................................................................................................................6
Figure 3- Activity Diagram.........................................................................................................................9
Figure 4- Domain Class Diagram..............................................................................................................13
List of Tables
Table 1- Brief Use Case Description 1........................................................................................................5
Table 2- Brief Use Case Description 2........................................................................................................6
Table 3- Full Use Case Description.............................................................................................................7
1

Introduction
This report discusses on the modelling on the given case study. The report will contain the use cases on
the case study along with the brief use case descriptions and a full use case description. The report will
also contain an activity diagram based on the flow of steps. The report also highlights the business objects
according to the case study. The report lastly contains a domain class diagram which represents the
classes and the connections.
2

Set of Fully Described Use Cases
Use case 1
Figure 1- Use Case1
(Use case diagrams are UML diagrams describing units of useful functionality (use cases) performed by a
system in collaboration with external users (actors), 2018)
3

Brief Use Case Description 1
Table 1- Brief Use Case Description 1
Use Case Brief Description
own solar panels or wind generators The home owners own the solar panels or the
wind generators.
power is generated The power is generated from these generators.
carries out data analysis The NCP governing body carries out the data
analysis.
power being fed into national grid The power generated is fed into the national grid.
checks the type of installation The NCP checks the type of installation.
keeps information of the wholesale rates The wholesale rates of power are kept.
determine profit margins The profit is calculated based on the wholesale
price.
act as monitoring service The NCP also acts as a monitoring service.
advice members The NCP advices members.
prepare monthly reports and a yearly report The NCP generates a monthly report on power
and a yearly report.
give information about intermediate faults The NCP gives information to households about
the intermediate faults.
perform research over the data The research is performed over the data.
download data For the research, the data is downloaded.
generate email The email is generated.
able to choose the downloadable data The data user should be able to choose what data
of its belonging can the research body download.
4

Use Case 2
Figure 2- Use Case 2
Brief Use Case Description 2
Table 2- Brief Use Case Description 2
Use Case Brief Description
could be wind or solar The power generator could be wind or solar.
power generated The power is generated.
power supplied either to grid to
residences
The power is supplied to either the national grid or
residences.
conversion of power Conversion of power is done after generation via an
inverter.
power fed in national grid The power is fed into national grid.
information kept of power fed The data about the power fed is kept by meter.
5

accessible via zigbee network The meters are accessible via a zigbee network.
customer is charged Upon the power dispensed, the customer is charged.
data information kept in controllers The data information is kept by the controllers.
accessibility confirmed The accessibility to data by the residences is confirmed by
the retailer.
Full Use Case Description
Table 3- Full Use Case Description
Use case name Carries out data analysis
Actor NCP governing body
Stakeholders Data user, inverter, meter, retail provider
Use Case Scenario Power generation, analysis of power data
Brief Description of the
use case
This use case describes the generation of power and then carrying out the
data analysis.
Preconditions
 The power has been generated.
 This power could be either wind or solar.
 Conversion of power is done after generation via an inverter.
Trigger The power is fed into national grid.
Postconditions  Proper data analysis has been done.
Activity Flow Action The process flow in the system
1. The NCP checks
the type of
installation.
1. The system checks whether
the installation is solar or
wind.
2. The profit is
calculated based
2. The wholesale rates of
power are kept.
6

on the wholesale
price.
3. The NCP advices
members.
3. The monitoring is done.
4. The NCP
generates a
monthly report on
power and a
yearly report.
4. A) The data about the
power fed is kept by meter.
B) The data information is
kept by the controllers.
C) The accessibility to data
by the residences is
confirmed by the retailer.
5. The research is
performed over
the data.
5. The email is generated.
Exception condition  The power is not fed.
 The wholesale rates are wrong.
 No monthly report is generated (How to Create Use Case
Description for Your Business Analysis Report - dummies, 2018).
7

Activity diagram
Figure 3- Activity Diagram
8

This activity diagram explains the flow of the case study from the power generation to data analysis.
There are three swimlanes in the diagram- power generation, power feed and data analysis. This diagram
covers all the use cases drawn in the two use case diagrams.
Combined set of Business Objects
The business objects that have been identified from the use case diagrams and the activity diagram are as
follows:
Entity Objects
1. HomeOwner
HomeOwner can be an entity object related to the Home Owner entity.
Attributes
 HomeOwnerId
 HomeOwnerName
 HomeOwnerAddress
 HomeOwnerContact
 HomeOwnerEmail
2. DataUser
DataUser can be an entity object related to the Data User entity.
Attributes
 DataUserId
 DataUserName
 DataUserAddress
 DataUserEmail
3. PowerGenerator
9

PoweGenerator can be an entity object related to the Power Generator entity.
Attributes
 PowerGeneratorId
 PowerGeneratorType
4. RetailProvider
RetailProvider can be an entity object related to the Retail Provider entity.
Attributes
 RetailProviderId
 RetailProviderName
 RetailProviderContact
 RetailProviderEmail
Boundary Objects
1. Equipment
Equipment represents the interaction between the NCP and the user.
Attributes
 EquipmentId
 EquipmentName
 EquipmentYType
 EquipmentCost
2. Report
Attributes
 ReportId
 ReportType
 ReportDescription
3. Email
10

Attributes
 EmailNo
 EmailSubject
 EmailBody
 EmailAttachments
Control Objects
1. PowerConversion
PowerConversion object can be drawn out of power conversion activity.
Attributes
 PowerConversionType
 PowerConversionGrid (Reporting System - Business Objects ( Class Diagram (UML)) | Creately,
2018)
11

Domain Class Diagram
Figure 4- Domain Class Diagram
The above class diagram has been modelled based on the case study. The relationships depicted in this
diagram are multiplicity, association and inheritance. Each class has been defined with attributes and
methods (UML Class Diagram Tutorial, 2018).
12

Conclusion
The report discussed on the various modelling aspects of the business. The report discussed the use case
diagram along with the descriptions. The report also depicted the business objects, activity diagram and
the class diagram. The report thus depicted the business flow in the case study.
13

References
 Use case diagrams are UML diagrams describing units of useful functionality (use cases)
performed by a system in collaboration with external users (actors), 2018, [online] Uml-
diagrams.org, Available at: <https://www.uml-diagrams.org/use-case-diagrams.html> [Accessed
17 May 2018].
 How to Create Use Case Description for Your Business Analysis Report – dummies, 2018, [online]
dummies, Available at: <http://www.dummies.com/business/business-strategy/how-to-create-
use-case-description-for-your-business-analysis-report/> [Accessed 17 May 2018].
 Reporting System - Business Objects ( Class Diagram (UML)) | Creately, 2018, [online]
Creately.com, Available at: <https://creately.com/diagram/example/gupeve391/Reporting
%20System%20-%20Business%20Objects> [Accessed 17 May 2018].
 UML Class Diagram Tutorial, 2018, [online] Lucidchart, Available at:
<https://www.lucidchart.com/pages/uml-class-diagram> [Accessed 17 May 2018].
14