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This document compares and contrasts spreadsheets and relational databases for managing data. Spreadsheets are grids that organize data into cells and allow for calculations. They are simple to use but can contain repeated data and errors. Relational databases store data in tables that can be linked to reduce duplication. They eliminate repeated data through these links but are more difficult to set up. The document outlines examples of using each and highlights advantages and disadvantages of spreadsheets and databases.
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5th LF Energy Power Grid Model Meet-up Slides
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
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My Presentation
- 1. Management of Data in Spreadsheets & Databases
- 2. SPREADSHEETS? •A grid that organises data into cells •Allows us to record, compare and display data efficiently and easily •Can be thought of as a large calculator •Capable of simple and complex mathematical calculations •Commonly used in budgets, financial analysis, and sales forecasting
- 5. OUR SPREADSHEET •Created in Google Docs •Two week record of each student’s activities rounded to the nearest half-hour block of time •Consists of six categories: student, category, activity, day, time & duration in hours
- 7. RELATIONAL DATABASES •A collection of data •Structured •Displayed in rows and columns, and linked to other tables •Minimises duplication of data •Commonly used for school/university student records, business partnership or product records, etc.
- 8. EXAMPLE? •School’s student records in a particular class •Same teacher, same home room, same class name •This data would be duplicated in a spreadsheet •This data would be entered ONCE in a relational database •It would then be linked, or “related” to each student
- 10. SPREADSHEETS Advantages Disadvantages Simple to use Repeated data Easy data duplication Data entry errors Cell formulas & calculations Formula errors
- 11. RELATIONAL DATABASES Advantages Disadvantages Elimination of repeated data Difficult to set up Search, retrieval and subsets Calculations are not cell-based Tabular or other display formats Cross-platform support difficult
- 12. CONTRAST Spreadsheets Relational Databases Repeated data Elimination of repeated data Simple to use Difficult to set up Cell formulas & calculations Calculations are not cell-based Data entry errors Search & retrieval of data Cell format view Many display formats Graphics are easy to insert Graphics are harder to set up