Switch Change (schg)

A packaged to identify problems in switching on eletricity distribution systems.

There are two types of switches:

• OnLoad: Which can change its the state (toggle) with energy (Eg: protection devices). This switches could be in the substation.
• OffLoad: Which can not change its the state (toggle) with energy.

When the operator try to operate these switches, the follow problems could occours:

• OFFLOAD_SWITCHING_ON_LOAD: Trying to switch an OffLoad in loading.
• CAUSES_MESH: The operation causes mesh in the topology.
• CAUSES_SUBSTATIONS_INTERCONNECTION: The operation causes interconnection between substations (Eg: short-circuit).

This packaged aims to identify this problems and report.

However, it is not fully tested yet. So, its is not ready to publishing.

Basic usage:

from schg import OnLoad, OffLoad, State, System

sw0 = OnLoad("sw0"), State.ON, on_substation=True)
sw1 = OffLoad("sw1"), State.ON)
sw2 = OnLoad("sw2"), State.OFF)
sys = System()

sys.link(sw0, sw1)
sys.link(sw1, sw2)

sw2.toggle_state() # It will raise if any problem happen.

Usage from files

For .schg files:

Syntax

{name} {type} {state} {substation (only for OnLoad type)} {name of switches linked}

Example

In the .schg file:

sw1 OnLoad ON substation sw2 sw3
sw2 OffLoad ON sw1 sw3
sw3 OnLoad OFF sw2 sw1

In the python file:

from schg import FromFile
path = "path/to/file.schg"
sys = FromFile(path)
sys.toggle_sw("sw3")  # It will raise if any problem happen.

For .dss files:

Syntax

New Line.{name}... {// or !} schg: {type} {state} {substation (only for OnLoad type)} {name of switches linked} `

Example

In the .dss file:

New Line.SW1 Phases=3  ... // schg: OnLoad ON substation SW2
New Line.SW2 Phases=3  ... ! schg: OffLoad ON SW1
New Line.SW3 Phases=3  ... ! schg: OnLoad ON SW2

In the python file:

from schg import FromFile
path = "path/to/file.dss"
sys = FromFile(path)
sys.toggle_sw("sw2")  # It will raise if any problem happen.

License

Copyright 2023 Felipe M. dos S. Monteiro fmarkson@outlook.com

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.