第三节电力系统的经济调度与自动调频

••)(b)(a)(c)(d)(e)(fFPFPFPPPbPoooooo3-14bbPFb∆∆=bF∆P∆3-15P'1P'2P2P1P12b2b1bb1b2b'1b'2P∆P∆2211PPPP−′=′−Q22221111bPPbbPPbSS′′′′∴nP1P2PnF1F2Fn∑=−niiFF1PL∑==niiLPP1λψ−=FLFλψ021=−+……++PPPPLn()=……PPPn,,21ψ∑=niiP10=−PL3-310=∂∂−∂∂=∂∂PPFPLiiiψλi12n3-33PL01=⎥⎦⎤⎢⎣⎡−∑∂∂−∂∂=∂∂=PPPPFPLLniiiiiλ[]001=−−∂∂λPFi0=−∂∂λPFiλ=∂∂PFiλ=∂∂PFiiλ=∂∂=…=∂∂=∂∂nnPFPFPF2211λ==…==nbbb21b1,b2,,bnλ3-16n3-16……b1b2bnb1b2bnPnP1P1P2P2PnλnP1P2PnF1F2Fn∑=+……++=niinFFFF121PLpe01=−−∑==pPPeLniiψ)(11eLniiniipPPFL−−−=∑∑==λ01=⎟⎟⎠⎞⎜⎜⎝⎛∂∂−−∂∂=∂∂ieiiPpPFPLλi12niiiieiLPFPpPF∂∂=⎟⎟⎠⎞⎜⎜⎝⎛∂∂−∂∂=1λiLieiPpL∂∂−=11λbiiiPF=∂∂bipeσiieiPp∂∂=σλσibiλσ)1(iib−=λσσσ=−=…=−=−nnbbb11122113-423-42AGC/EDC•10S•AGCAutomaticGenerationControl10S~3min•EDCEconomicDispatchControl3min2PzdfzdPfBf)(SKPc)(SN3-17AGC+++)(SNBffZdPZd)(SKfP−PGPCAGC•G1G2G3ACE+−+−+−)(1SN)(2SN)(3SN)(SKACEf∆P∆G1G3G23-18AGC12⎟⎠⎞⎜⎝⎛−++=∑∑==nibiniGiibiCiPACEPPP11αPciPbiPGiαiEDCPbiαi3-19iβαi•••ACE∑PGiPG1PGn3-19AGCAGCACEACEinibiniGiibiciPPPP⋅+⎟⎟⎟⎠⎞⎜⎜⎜⎝⎛−++=∑∑==βα11()ACEPPPPiinibiniGiibici⋅++⎟⎠⎞⎜⎝⎛−+=∑∑==βαα11ACE=0EDCACE0ACE)(iiβα+3-20PCPGBAAGCNC3-21AGCN—PPPCBA++—