Blog

Title images are generated by ChatGPT’s AI Tool DALL-E

2024

Subsynchronous Oscillation Screening

SSR

SSO

Inverter

NERC

Generator

SSCI

Capacitor

Series compensation

Weak grid

PLL

EMT

PSCAD

RMS

PSS/E

Sub-synchronous Oscillations can also occur in parts of a weak system that does not necessarily comprise of series-compensated transmission circuits. – NERC Reliability Guideline March 2023

FERC Order No. 901

Model

IBR

Inverter

FERC

Positive Sequence

EMT

NERC

Reliability

Model Validation

Data Sharing

New grid code is on its way!

Model Levels – MOSFET and Inverters

Model Level

MOSFET

Inverter

Level 2

Positive Sequence

EMT

Phasor

All models are wrong, but some are useful – George Box

2023

NFP Plot, Frequency Scan Plot, and Impedance Bode Plot of an Inverter

Frequency Scan

NFP

Impedance

DQ

Positive Sequence

Inverter

Let’s talk about these plots out there that are related to grid-following and grid-forming inverters.

Grid Code, IBR Simulation Software, Modeling, Verification, and Validation

MOD

Model

PSS/E

PSCAD

Electromagnetic

Positive Sequence

Inverter

Electranix

NERC MOD Standards, modeling procedures from ISOs and industries.

North America Power Grid – Organization Structure, Regulated and Deregulated Electricity Markets, and RTOs and ISOs

Power System

Power Grid

NERC

WECC

ERCOT

CAISO

This blog gives brief information on FERC, NERC, REs, RTOs, ISOs, WECC, ERCOT, and CAISO.