Two new methods to assess short-term transmission reliability - Power Engineering Society Summer Meeting, 2001

fn thN paper Jve pre,ren( [he short-term re[iabdi~ assessment problem os a risk mormgement problem, ~t,here the uncer[amry involved IS rela(ed with [ransousslon outages and [he consequences are tneusored by the dejtctt experanented b) ioads T>vo new rnethodf are formulated and vnplemented m an academic lest system First, v e formulate the short-term re[labdl~ related twks associated wIih the po: sib[hry OJ transmission fadures, whtch are measured through the probabllty of several scenar!os MIconstderatlon and the respecrlve consequences e.~perwnen(edby sotne market partlcipatrts, in [11 !.spaper the load cltrtatitnent Second we develop a neu market-based method to allocate reserve consdetvt?g explicit(v reltabiit~ reqalrertrenfs wbrni((ed by (he demand in t;lls new method the et?er~ price after the occurrence of conlmgerq {redispatch) n calculated after [heJact, dae (o (IIIsIssue the method IScalled ex-post Thwd, we~ormalate another market-based method to allocate reserve CO>I~[derlng the reltub[l[(> requrremen( sabmrtted by the demand In an explfclt way In IhIScase the enera gmcecalculated beforethe occurrence qf contingency (redispatch} does not change, mdependem [Jf the .r~stem condltlon, therefore the method ISculled ex-unte Ftmdlj, we Lotnpare bodl new twthods m an ucadetmc [es: system >vbere )te conclade that both metbod~ ullocate reserve jhl)l[mg pre .speclfiedrelioblhp reqaownenls The difference m allocation re.salts in u difference m COSISbut not in reltabtlip level IVoreover, the tradeoff M m between the econotntc slgna[ green by stabdt~ OJthe energI prtce tn presence of contingencies and cost necessap to have different amount of reserve Kqwords: Short-[erm rellabiliij ussesstnent, rehobilly related ~isks rel[abtll~~requr~ement. e.v-postmethod e.~-antemethod