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ISO-NE Design Advisory Committee Minutes: 21 March 2019

ISO-NE Design Advisory Committee Minutes: 21 March 2019

Contents

Regional System Plan Update

WESTBOROUGH, Mass. – New broadcast updates have been introduced in New England since October, ISO-NE's Switch Designer Jon Breard advised RTO's Planning Committee on Thursday throughout a regional system plan

. As well as, 51 new asset tasks have been listed for approval – primarily by Eversource – with one undertaking in Rhode Island, seven in New Hampshire, 13 in Massachusetts and the remaining in Connecticut.

Based on the state of funding within the reliability of New England relocation tasks by 2023 ISO-NE

One stakeholder requested why RTO lists quite a lot of tasks not but beneath development in Southeast Massachusetts / Rhode Island (SEMA / RI)

] Eversource's Robert Andrew replied that the proposal and the board's evaluation process for the undertaking is long. "When we get a list from the list, we begin to do design work, local information, go through state location approvals, etc. – and these state approvals can be appealed," he stated.

RTO employees expects to submit draft RSP19 for evaluate by July 8, obtain comments from PAC by July 24, and ship a summary of comments and preliminary response on August 6th. The public draft ought to be revealed on the finish of August before the general public meeting in Boston

Natural Fuel Transmission Registers

The USA this winter units a brand new pure fuel transmission report for about 150 Bcf on January 30, but most of New England's local distribution corporations introduced new peak occasions in Jan 21, CEO of Northeast Fuel Affiliation Tom Kiley informed PAC

LNG Excalibur docked Everett, Mass., This winter throughout a snow storm. | NGA

Algonquin fuel transmission reached the peak of the brand new system on January 21, and its second highest peak on January 22, Kiley said that the pipeline ran 41 days at peak capability in the course of the winter, which is why NGA helps a brand new infrastructure improvement. The Tennessee fuel pipeline set new system capacity on January 30, and the Iroquois pipeline units the brand new peak on 1 February.

4 natural fuel associations in Massachusetts have started moratoria on new fuel assemblies as a result of provide constraints. he stated:

”The New York Consolidated Edison solely set a moratorium on new connections partly in Westchester County, and it’s a huge deal in the space of ​​robust progress. Tasks, ”Kiley stated on the New York Occasions report that day

With regard to LNG, Kiley referred to a report by the US Power Info Administration on March 12 stating that estimated deliveries of New England's LNG amenities rose from about 360 MMcfd on January 19 to over 700 MMcfd: 21 January.

He stated that this winter was robust in main delivery days from Exelon Era's Everett LNG plant and Canaport LN in G New Brunswick. In addition, the offshore facility, owned by Excelerate Power – Northeast Gateway, delivered its first deliveries to the New England system in two years and reached a document excessive on February 1.

EIA this winter launched a new web site featuring New England's every day key to electrical energy, pure fuel and oil system info, Kiley stated

Draft CELT Summer time Highlight Model Revised

ISO-NE is more likely to improve its annual long-term power and demand a forecast based mostly on a forecast of slightly stronger financial progress in New England in comparison with final yr's outlook. The forecast is included in the RTO 2019 Capacity, Power, Load and Transmission (CELT) report

The annual power and summer time peak forecast for 2019 predicts that the annual gross power is 2027 about three% greater than last yr's CELT, Jon Black, ISO-NE- In accordance with the load forecast supervisor, the summer time 50/50 peak demand forecast and the summer time 90/10 forecasts for the yr have fallen by about 1.eight% and three.2%.

doesn’t embrace reductions resulting from solar cell (BTM PV) and power efficiency. When it comes to gross power modeling, RTO rejected the annual fashions and as an alternative developed separate monthly power models to raised mirror the modifications in seasonal developments.

In comparison with final yr's 2027 draft internet annual power forecast, including BTM PV and EE, is about 4.6% larger, in summer time 50/50 and in summer time 90/10 predicted to be about 2.3% and 3.9% lower.

On the last day of summer time, the photographer exhibits that the reduction of the BTM PV peak is the distinction after the height BTM PV is redesigned and the BTM PV peak community. | ISO-NE

“You can have several years without extreme weather conditions,” Black stated, referring to 90/10 peak load predictions.

Draft 2027 BTM PV forecast is about 1% lower than final yr's CELT, EE forecast is relatively unchanged.

Last yr, RTO predicted that BTM PV would scale back final summer time's power consumption by 633 MW in each 90/10 and 50/50 peak circumstances. The actual BTM PV peak discounts in August 2018 ranged from 518 MW on 6 August to 1055 MW on 7 August.

”It will be good if it hit precisely 633 [MW],” Black stated. “We’re simply making an attempt to make use of one value. … The best way we achieved peak load discount analyzed the performance of BTM PV during a sample of historic high days and decreased reductions as a perform of PV penetration. in diploma days as one other management in its modeling in addition to the weighted temperature humidity index. It also shortened the 40-year historic interval used to supply a 25-year possible forecast

Tx Guide to Make clear Load Definitions

Brent Oberlin, Head of Broadcast Design at ISO-NE, Defined Present Masses, Mild and Shoulder Levels in Technical Design for Transmission Planning (TPTG) ), which turned confusing when the minimum load degree was revised downwards in November 2017. RTO amends this variation.

Based mostly on historic tendencies, hourly masses, ISO-NE in 2017 lowered the minimum load from eight,500 MW to eight,000 MW; In addition, a revision was made to ensure that the paper mill masses have been included in the complete of 8,000 MW. These industrial masses had previously been modeled individually as a result of their inaccuracy for typical load cycles is necessary as a result of their relative measurement and site

TPTG at present describes the manufacturing unit load as a part of the 8,000 MW New England load, however it isn’t clear what to imagine if Considering doing less than 320 MW of load. In accordance with present follow, designers might conclude that the remainder of the New England masses can be raised so that the full quantity of eight,000 MW that really says the remaining clients use extra electrical energy will stay the identical.

Oberlin stated the TPTG is now modifying a system with a minimum load of 7,680 MW plus a manufacturing unit load. It will forestall a brand new manufacturing unit load from changing underneath the idea of masses from the New England mills. Because the degrees of sunshine and shoulder masses are comparable, "we turn all three back to the way that the minimum load was described three years ago," he stated.

Wants Mirror Declining Internet Load [19659002] RTO has updated its needs assessment to mirror predictions that proceed to point out a big decline in internet service weight and a changing pure useful resource combine.

The latter was introduced last month on the upcoming capability auction 13 Killingly Power Middle (632 MW) acquired a capacity supply obligation. Because of the substitution public sale, Pawtucket Power (54 MW) retires and the Winery Wind acquired a 54 MW dedication. In addition, the 48 MW Schiller four plant in New Hampshire and Maine in Yarmouth 1 and a couple of, every 50 MW, was removed from the second yr in a row, suggesting a attainable retirement for network designers.

FCA 13 was the primary public sale of Sponsored Policy Assets (CASPR) rules that established a secondary substitution auction. (See ISO-NE enhances FCA 13 despite the discrepancies.)

The purpose of wants evaluation is to avoid pointless spending on transfer tasks. Oberlin pointed out that a number of the proposed upgrade in East Connecticut might save greater than $ 20 million in the area.

Additional analysis delays the much-needed broadcast updates, but RTO tries to discover a stability

The most important influence on most research areas is the change in forecasts, as the change of assets in West and Central Massachusetts also influences power flows. from west to east. One main space of ​​affect is SEMA / RI, which sees Pawtucket Power retiring and including Vineyard Wind, modeled on each 54 MW and 160 MW.

FCA 14 Tx Transfer Capacity

Transmission Updates The SEMA / RI Reliability Upgrades and Japanese Era Pensions move to subsequent yr's FCA 14 Switch Capacity Improvement and Capability Improvement, says RTO's Switch Technique and Providers Supervisor Al McBride.

The demolition of Brayton Level in February 2019; Implantation of cooling towers is directed on April 27 Brayton Point Commerce Middle

The deliberate upgrades embrace the new 115 kV switching station, 345/115 kV auto transformer and a number of other different 115 kV upgrades, all to be completed by the top of 2021, What Increases SEMA / RI Import Capability

The Nice Era Retirement in the Area is Brayton Level, Pilgrim, and Mystic 7.

RTO estimates SEMA / RI's import and west-east interface transfer capability to research impacts on reliability and era retirement, together with steady state warmth and voltage analysis

All giant pensions acquired for FCA 14 capability dedication interval are taken under consideration within the capability zone formation process

The RTO clustering technique has been launched to a big variety of vital interconnection requests in Reputations. n's first cluster was over 600 MW within the propagation queue. (See 6 tasks to research the consequences of the first clustered system of ISO-NE.)

Additionally, the 1200 MW exterior non-compulsory knowledge switch replace (ETU) proceeds by means of the system impression research course of, however requests for interconnection of nameplates of over 6,200 MW. There’s enough new capability within the region's analysis course of, which might be export-restricted, McBride stated.

Replace of EIPC Frequency Response

Main Engineer of ISO-NE Steven Judd Leads Pressure Response to EIPC Frequency Response, which was established in 2017 at NERC's request to adapt EIPC's deliberate inertial and frequency response to East Interconnection useful resource mixing

Judd stated lowered inertia as a result of increased non-synchronous era infiltration (wind and sun, new HVDC imports and battery storage require higher frequency-sensitive simulation models.

The NERC additionally expressed concern concerning the potential for exposure to sub-frequency (UFLS) occasions and the need to set up frequency response charges for interconnection over time. ee that the NERC Multidimensional Modeling Workforce (MMWG) is contemplating creating a new library occasion to satisfy traditionally low inertia / minimal load for long-term power consumption and transient stability fashions.

Presently, the Greatest Various to Frequency Response Research is the five-year Spring Load (SLL), which does not correspond to the recorded historic minimal depth saved for East Interconnection, Judd stated.

– Michael Kuser