Xiao Wang
@xiaowang1984.bsky.social
Principal Engineer Semiconductor Industry and now a DER/Grid Edge worker as well! Opinions own
Fwiw ai says inflation was 1.5x
November 15, 2025 at 1:47 PM
Fwiw ai says inflation was 1.5x
Yeah tall poles in the tent are still pipelines and nimbyism for build right. I went by East Boston substation the other day and I wondered if they needed to make it look like a housing complex. I had almost missed it at first...
November 14, 2025 at 2:51 PM
Yeah tall poles in the tent are still pipelines and nimbyism for build right. I went by East Boston substation the other day and I wondered if they needed to make it look like a housing complex. I had almost missed it at first...
There needs to be another name to describe Spanish PV interconnection policy. How about "connect and pray"
October 10, 2025 at 1:05 PM
There needs to be another name to describe Spanish PV interconnection policy. How about "connect and pray"
Damn Spanish grid operator not doing anything in six months was not on my bingo card! Esp when they have energy transition goals and a second blackout would... probably hurt the effort.
elperiodicodelaenergia.com/la-verdadera...
elperiodicodelaenergia.com/la-verdadera...
October 9, 2025 at 11:15 AM
Damn Spanish grid operator not doing anything in six months was not on my bingo card! Esp when they have energy transition goals and a second blackout would... probably hurt the effort.
elperiodicodelaenergia.com/la-verdadera...
elperiodicodelaenergia.com/la-verdadera...
Some other people though are snowflakes. Weak AF.
June 21, 2025 at 4:34 PM
Some other people though are snowflakes. Weak AF.
Here is a review of my thread from a NERC reliability auditor.
June 21, 2025 at 9:34 AM
Here is a review of my thread from a NERC reliability auditor.
Im getting props for my thread from the power engineers who support renewables 😁😂
June 20, 2025 at 4:50 PM
Im getting props for my thread from the power engineers who support renewables 😁😂
June 20, 2025 at 12:54 PM
"Overall, the research on controlling the generation of negative-sequence current from GFM inverters and its impact on protection schemes is still in its early stages and requires further
research."
Must warm the hearts of the protection folk!
research."
Must warm the hearts of the protection folk!
June 20, 2025 at 12:44 PM
"Overall, the research on controlling the generation of negative-sequence current from GFM inverters and its impact on protection schemes is still in its early stages and requires further
research."
Must warm the hearts of the protection folk!
research."
Must warm the hearts of the protection folk!
And the LinkedIn post points out very poor compliance with the German functionality right since it requires a hardware change
June 20, 2025 at 12:36 PM
And the LinkedIn post points out very poor compliance with the German functionality right since it requires a hardware change
I'm reading it that the regulator agrees with me that more things need PSS and AVR functions besides thermals, and apparently you agree about this too..And they agree that correct modeling is important just as I've said. They seem to dance around the fact that more thermal dispatch helps both.
June 20, 2025 at 12:20 PM
I'm reading it that the regulator agrees with me that more things need PSS and AVR functions besides thermals, and apparently you agree about this too..And they agree that correct modeling is important just as I've said. They seem to dance around the fact that more thermal dispatch helps both.
What is your comments on the PSS provisioning to dampen oscillation or if the TSO did correct EMT study to try to find the dispatches that excite the resonance modes? Pretty damn sure this is also part of the first recommendation in the study. This guy said it right
June 20, 2025 at 12:17 PM
What is your comments on the PSS provisioning to dampen oscillation or if the TSO did correct EMT study to try to find the dispatches that excite the resonance modes? Pretty damn sure this is also part of the first recommendation in the study. This guy said it right
The first event in the chain was an RE generator that tripped even with system voltage levels at nominal wasn't it. I bet you blame this the same as thermal generators not provisioning the "adequate" reactive power
June 20, 2025 at 12:13 PM
The first event in the chain was an RE generator that tripped even with system voltage levels at nominal wasn't it. I bet you blame this the same as thermal generators not provisioning the "adequate" reactive power
Maybe this is more a hanlon razors situation
June 20, 2025 at 7:54 AM
Maybe this is more a hanlon razors situation
If anything the report backs up my position that if you want to get all the way to the edge on your dispatch then it's on you as the grid operator to make sure the settings are what you *think* they are. This presumably would involve all control models for both your thermals and IBRs
June 20, 2025 at 5:25 AM
If anything the report backs up my position that if you want to get all the way to the edge on your dispatch then it's on you as the grid operator to make sure the settings are what you *think* they are. This presumably would involve all control models for both your thermals and IBRs
This section seems heavily reacted. There is an extensive history of grid following inverter controls being sources of intra area oscillations in weak grids though I'll comment
June 20, 2025 at 5:19 AM
This section seems heavily reacted. There is an extensive history of grid following inverter controls being sources of intra area oscillations in weak grids though I'll comment
The report suggests extra elements like STATCOM or BESS to do this function but given that oscillation damping is also tasked to the thermals how much a factor is the lack of this to the initial events
June 20, 2025 at 5:09 AM
The report suggests extra elements like STATCOM or BESS to do this function but given that oscillation damping is also tasked to the thermals how much a factor is the lack of this to the initial events
The oscillations are a major factor and a buried aspect of the events seem to also be that the PSS/POD functions are also predominantly on the thermals plants as well.
June 20, 2025 at 5:08 AM
The oscillations are a major factor and a buried aspect of the events seem to also be that the PSS/POD functions are also predominantly on the thermals plants as well.
The report explicitly mentions the lack of dynamic control both due to the insufficiently compliant generators but also from the low number of generator. Given that thermals were the predominant source of voltage regulation it stands that extra units dispatched increase that capacity
June 20, 2025 at 5:03 AM
The report explicitly mentions the lack of dynamic control both due to the insufficiently compliant generators but also from the low number of generator. Given that thermals were the predominant source of voltage regulation it stands that extra units dispatched increase that capacity
Friends can this be considered topology optimization as a GETS (except don't mess up)
June 18, 2025 at 2:41 PM
Friends can this be considered topology optimization as a GETS (except don't mess up)
Besides if we are talking about non compliant things you *could* point the finger at poor inverter resources ride through settings too
June 17, 2025 at 10:25 PM
Besides if we are talking about non compliant things you *could* point the finger at poor inverter resources ride through settings too