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Elektrische Verteilnetze & Smart Grids > System Planning > Flashcards

System Planning Flashcards

1
Q

Dimensions of system planning – Potential for decomposition

A
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2
Q

Definition and Application Cases for Target Grid Planning

A
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3
Q

Overview of the Target Planning Process

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4
Q

Target Grid Planning - Radial Grids

A
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5
Q

Target Grid Planning - Ring Grids

A
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6
Q

Meshed grid planning with genetic algorithm

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7
Q

Application Cases for Expansion Planning

A
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8
Q

Conventional measures for transformer stations

Expansion planning

A
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9
Q

Conventional measures for lines

Expansion planning

A
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10
Q

Grid splitting & Topological and operational measures

Expansion Planning - Conventional measures

A
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11
Q

Innovative measures

Exansion Planning

A
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12
Q

DC System behaviour

A
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13
Q

DC System configuration

Exemplary DC pole configurations for medium voltage (AC) cables

A
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14
Q

Name advantages and disadvantages of heuristic methods for target grid planning

A

Advantages
- Detailed modelling
- Faster runtimes

Disadvantages
- No guarantee for solution quality

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15
Q

Which graph-theoretic analog can help planning ring grid structures?

A

The Capacitated Vehicle Routing Problem (CVRP) can be seen as graph-theoretic
analog

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16
Q

Formulate the optimization problem for the Capacitated Vehicle Routing Problem
(CVRP). What do the decision variables 𝑥𝑖𝑗𝑘 mean? Include the objective function
and describe the constraints in a few words.

A
17
Q

Name at least four conventional and two innovative expansion measures for distribution grids.

A

Conventional:
- Exchange or capacity increase of transformer stations
- Parallel reinforcement of transformer stations
- Exchange of power lines
- Parallel reinforcement of power lines incl. feeder splitting
- Addition of outgoing feeders or rings
- Grid splitting
- Topological measures

Innovative:
- On-load tap changers in transformer substations
- Line voltage regulator (LVR)
- Reactive power compensation
- Storages
- Grid user flexibility

18
Q

1.2 Which of these statements are true?

a. Due to the skin effect, DC power transmission has much higher losses than AC power
transmission.

b. Due to their high inertia, the frequency control in DC distribution systems can be
much slower.

c. Today, most electricity distribution systems are not actively controlled

A

False

False

True

19
Q

Solve Exercise 1.3 on Exercise 2

Solution in Moodle

A
20
Q
A
21
Q

Task 3.2 on Exercise 2

A

Elektrische Verteilnetze & Smart Grids (11 decks)

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