Integration &amp; automation: From protection to advanced energy management systems

Meliopoulos, Sakis; Cokkinides, G.J.; Grijalva, Santiago; Huang, Renke; Polymeneas, Evangelos; Myrda, Paul; Farantatos, Evangelos; Gehrs, M.

doi:10.1109/irep.2013.6629373

Cited by 10 publications

(8 citation statements)

References 12 publications

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“…Stefanos Sofroniou (IPTO): I would like to comment and I have a question for professor Meliopoulos [2]. First, I would like to give my credits to the paper.…”

Section: Sakis Meliopoulosmentioning

confidence: 99%

“…Alex Papalexopoulos (ECCO International): This is a question for professor Meliopoulos [2]. This is` a promising technology, indeed.…”

Section: S Meliopoulosmentioning

confidence: 99%

“…Papalexopoulos: But it seems your relays respond, actuate based on the information they sense locally. Emmanuel Thalassinakis (HEDNO): I have a question for professor Meliopoulos [2]. In your interesting work you propose an integrated scheme for control operation and for protection.…”

Section: S Meliopoulosmentioning

confidence: 99%

“…Sofroniou: Two more comments again after the last question, if I am allowed, regarding professor Meliopoulos' work [2]. The first point is that we must consider also the problem we have with the renewables and all these converters.…”

Section: E Barociomentioning

confidence: 99%

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Oral discussions on Session: “Control and protection” - Part II

Costa

2013

2013 IREP Symposium - Bulk Power System Dynamics and Control - IX Optimization, Security and Control of the Emerging Power Grid

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“…Stefanos Sofroniou (IPTO): I would like to comment and I have a question for professor Meliopoulos [2]. First, I would like to give my credits to the paper.…”

Section: Sakis Meliopoulosmentioning

confidence: 99%

“…Alex Papalexopoulos (ECCO International): This is a question for professor Meliopoulos [2]. This is` a promising technology, indeed.…”

Section: S Meliopoulosmentioning

confidence: 99%

Section: S Meliopoulosmentioning

confidence: 99%

Section: E Barociomentioning

confidence: 99%

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Oral discussions on Session: “Control and protection” - Part II

Costa

2013

2013 IREP Symposium - Bulk Power System Dynamics and Control - IX Optimization, Security and Control of the Emerging Power Grid

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“…importantly, does not require coordination with other protective relay functions [3], [4]. The setting-less protection relay monitors all physical laws that the device under protection must satisfy when it operates normally (i.e.…”

Section: Introductionmentioning

confidence: 99%

Integrated Centralized Substation Protection

Meliopoulos

Cokkinides

Albinali³

et al. 2018

Proceedings of the 51st Hawaii International Conference on System Sciences

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Substation cyber assets are mission critical for protection and control of substations. Managing and ensuring their secure operation is of paramount importance. A known vulnerability is hidden failures which are responsible for about 10% of misoperations and their detrimental effects on system reliability. The paper presents an integrated centralized substation protection approach that is based on the recently developed setting-less relays which are integrated into a centralized substation protection scheme with the following features: (a) fast, dependable and secure protection of each substation protection zone by a settingless relay, (b) supervision of each settingless relay by validating relay input data by a substation wide state estimator, (c) self-healing against hidden failures by detecting and identifying compromised data and replacing them with estimated values, thus ensuring that the settingless relays will always operate on validated data. The paper provides a summary review of the settingless protective relay and introduces the Integrated Centralized Substation Protection Scheme (ICSP) which uses the data from all settingless relays in the substation to perform a substation wide state estimation. The state estimator uses a hypothesis testing algorithm to determine whether (a) data are valid with no faults or hidden failures, (b) data are valid and a fault exists in the system, or (c) some data are invalid due to hidden failures. In the last case, the state estimator uses the substation state and model to replace the compromised data with estimated values and thus enabling self-immunization against hidden failures. A byproduct of the method is the substation state estimate which is transmitted to the control center where it is used with the state from all substations to synthesize the system wide state estimate and model. Architectural issues are addressed as well as migration issues of existing systems into the proposed ICSP.

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Oral discussions on Session: “Control and protection” - Part I

Costa

2013

2013 IREP Symposium - Bulk Power System Dynamics and Control - IX Optimization, Security and Control of the Emerging Power Grid

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This paper contains the first part of the transcribed oral discussions of Session "Control and Protection" of the 2013 IREP Symposium -Bulk Power System Dynamics and Control, held on Tuesday morning, August 27, 2013. Papers [1]-[4] were presented. DiscussionChair: The floor is now open for questions.James Lyons (retired General Electric): For the last speaker [4]: There are three start-up companies in the USA right now working on distribution voltage control with low voltage power electronics. Two of them are pursuing UPFC type architecture with voltage series and shunt compensation, and there is also another initiative in California, called smart-inverter initiative, which is built on German experience. I am told that the shunt compensation, just VArs, doesn't work so well. And the fundamental issue on high penetration of PV in Germany etc. is cloud passing and then pumping up and down the distribution voltage. Can you comment on that? Have you thought through these types of controls? David Hill (Univ. of Sydney): Just really not much more than what I said. There are colleagues around me who are trying. They see the issues and they are taking a fresh approach. They tried some of the existing methods, like scaling down STATCOMs and similar approaches, that didn't work very well. So now, and I think that I know the initiative that you mentioned in California, they are starting all over again in a sense to design new controllers for low voltages. My point was that we need to follow that, and model them and include them in our coordination techniques. Hopefully, those controllers would be decentralized. You can't coordinate millions of things like that or even thousands perhaps but you can include them in your models of the higher voltage. J. Lyons: One of the claims made is, looking at series compensation that more isolates a sensitive load from the distribution medium voltage directly. That should be quite effective in controlling actual delivered voltage to given customers. So, when you have problematic customers on the distribution feeder and you can isolate a few of those, you can live with wider swing of the feeder voltage and keep everybody on.

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Integration & automation: From protection to advanced energy management systems

Cited by 10 publications

References 12 publications

Oral discussions on Session: “Control and protection” - Part II

Oral discussions on Session: “Control and protection” - Part II

Integrated Centralized Substation Protection

Oral discussions on Session: “Control and protection” - Part I

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Integration & automation: From protection to advanced energy management systems

Cited by 10 publications

References 12 publications

Oral discussions on Session: &#x201C;Control and protection&#x201D; - Part II

Oral discussions on Session: &#x201C;Control and protection&#x201D; - Part II

Integrated Centralized Substation Protection

Oral discussions on Session: &#x201C;Control and protection&#x201D; - Part I

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Oral discussions on Session: “Control and protection” - Part II

Oral discussions on Session: “Control and protection” - Part II

Oral discussions on Session: “Control and protection” - Part I