Results of NTC Calculation Exercises on BSTP Regional Model Energy Technology and Governance Program Black Sea Transmission System Planning Project (BSTP) Results of NTC Calculation Exercises on BSTP Regional Model xxxxx, 2017 Xxxxx, Xxxxx This presentation is made possible by the support of the American people through the United States Agency for International Development (USAID). The contents are the responsibility of the United States Energy Association and do not necessarily reflect the views of USAID or the United States Government.

Results of NTC Calculation Exercises on BSTP Regional Model [please enter considered border] LOGO TSO, COUNTRY Authors: Name and Surname, Organization

Contents Introduction NTC Calculation Prerequisites: Base Case Exchange (BCE) and Notified Transmission Flows (NTF) Transmission Reliability Margin (TRM) Already Allocated Capacity (AAC) Generation Shift Keys (GSK) NTC Calculation Procedure: Algorithm Creation of Auxiliary Files for Calculation (MON, CON, SUB) Static and Dynamic Security Calculations NTC Calculation Results Conclusions 3 3

Introduction Short description of the NTC calculation scenario i.e. observed border between two areas, in one or two slides (list of active tie-lines given by voltage levels? single line diagram of bordering substations with observed tie-lines? position in the systems with geographical scope?) Xxxxx 4 4

NTC Calculation Prerequisites: BCE&NTF Explanation of assumed Base Case Exchange programs (BCE) between two areas for observed regimes and their physical cross-border flows – Notified Transmission Flow (NTF) (why these amounts? why these directions?) Xxxxx 5 5

NTC Calculation Prerequisites: TRM Explanation of assumed value for Transmission Reliability Margin (TRM) (if any? if exists, why this value? which kind of uncertainties are included there?) Xxxxx 6 6

NTC Calculation Prerequisites: AAC Explanation of Already Allocated Capacity (AAC) if exists at observed border (if exists, why this value? which kind of already allocated transmission rights are included there?) Xxxxx 7 7

NTC Calculation Prerequisites: GSK Explanation of applied Generation Shift Keys (GSK) in both areas in one or two slides (why this type of shift keys? list of generation units which are engaged? what are the possible limits in generation shifting in both directions (in case of power increasing and power decreasing)? what is the solution in case of exceeded power limit?) Xxxxx 8 8

NTC Calculation Procedure: Algorithm Short description of applied NTC calculation procedure in one or two slides (with algorithm chart) taking into account local specifics and necessary assumptions (do you perform usually any kind of capacity calculation and capacity allocation in your practice? if yes, which kind of standard procedure is usually applied in capacity calculation? do you have some expected loop flows?) Xxxxx 9 9

NTC Calculation Procedure: MON, CON, SUB Short description of applied auxiliary files for calculation (MON, CON, SUB) (explain list of observed critical branches and critical outages in considered TSOs? what are the specific loading limits applied within the calculation process?) Xxxxx 10 10

NTC Calculation Procedure: Static and Dynamic Security Calculations Explanation of achieved static/dynamic security limits within the calculation process for each observed regime and each considered direction (if dynamic security limits exist, please stress critical elements and critical contingencies? explain them?) Xxxxx 11 11

NTC Calculation Results Table with calculation results for observed border and observed regimes (please see an example below) Xxxxx

Conclusions Summary of the results. General observation and comments concerning differences between regimes and directions Xxxxx 13 13

Questions and Discussion

Proposal for Homework Scenarios BSTP Member Border Regime Direction Armenia AM-GE 2020 year Winter Maximum Summer Minimum Both Bulgaria BG-RO Georgia GE-TR Moldova MD-UA Romania RO-MD Turkey TR-BG Ukraine UA-RO 15 15