def __init__(self, system, config): ExcBase.__init__(self, system, config) self.TA = ConstService(v_str='TATB * TB') self.vref0 = ConstService( info='Initial reference voltage input', tex_name='V_{ref0}', v_str='vf0/K + v', ) self.vref = Algeb(info='Reference voltage input', tex_name='V_{ref}', unit='p.u.', v_str='vref0', e_str='vref0 - vref') # input excitation voltages; PSS outputs summed at vi self.vi = Algeb( info='Total input voltages', tex_name='V_i', unit='p.u.', ) self.vi.e_str = '(vref - v) - vi' self.vi.v_str = 'vref0 - v' self.LL = LeadLag(u=self.vi, T1=self.TA, T2=self.TB, zero_out=True) self.LAW = LagAntiWindup( u=self.LL_y, T=self.TE, K=self.K, lower=self.EMIN, upper=self.EMAX, ) self.vout.e_str = 'LAW_y - vout'
def __init__(self, system, config): TGBase.__init__(self, system, config) self.gain = ConstService(v_str='u/R', tex_name='G', ) self.pref = Algeb(info='Reference power input', tex_name='P_{ref}', v_str='tm0 * R', e_str='tm0 * R - pref', ) self.wd = Algeb(info='Generator under speed', unit='p.u.', tex_name=r'\omega_{dev}', v_str='0', e_str='(wref - omega) - wd', ) self.pd = Algeb(info='Pref plus under speed times gain', unit='p.u.', tex_name="P_d", v_str='u * tm0', e_str='u*(wd + pref + paux) * gain - pd') self.LAG = LagAntiWindup(u=self.pd, K=1, T=self.T1, lower=self.VMIN, upper=self.VMAX, ) self.LL = LeadLag(u=self.LAG_y, T1=self.T2, T2=self.T3, ) self.pout.e_str = '(LL_y + Dt * wd) - pout'
def __init__(self, system, config): ExcBase.__init__(self, system, config) self.SAT = ExcQuadSat(self.E1, self.SE1, self.E2, self.SE2, info='Field voltage saturation', ) # calculate `Se0` ahead of time in order to calculate `vr0` # The term `1-ug` is to prevent division by zero when generator is off self.Se0 = ConstService(info='Initial saturation output', tex_name='S_{e0}', v_str='Indicator(vf0>SAT_A) * SAT_B * (SAT_A - vf0) ** 2 / (vf0 + 1 - ug)', ) self.vr0 = ConstService(info='Initial vr', tex_name='V_{r0}', v_str='(KE + Se0) * vf0') self.vb0 = ConstService(info='Initial vb', tex_name='V_{b0}', v_str='vr0 / KA') self.vref = Algeb(info='Reference voltage input', tex_name='V_{ref}', unit='p.u.', v_str='v + vb0', e_str='vref0 - vref' ) self.vref0 = PostInitService(info='Constant v ref', tex_name='V_{ref0}', v_str='vref', ) self.SL = LessThan(u=self.vout, bound=self.SAT_A, equal=False, enable=True, cache=False, ) self.Se = Algeb(tex_name=r"S_e(|V_{out}|)", info='saturation output', v_str='Se0', e_str='SL_z0 * (vp - SAT_A) ** 2 * SAT_B - Se * vp', diag_eps=True, ) self.vp = State(info='Voltage after saturation feedback, before speed term', tex_name='V_p', unit='p.u.', v_str='vf0', e_str='ue * (LA_y - KE*vp - Se*vp)', t_const=self.TE, ) self.LS = Lag(u=self.v, T=self.TR, K=1.0, info='Sensing lag TF') # input excitation voltages; PSS outputs summed at vi self.vi = Algeb(info='Total input voltages', tex_name='V_i', unit='p.u.', ) self.vi.v_str = 'vb0' self.vi.e_str = '(vref - LS_y - W_y) - vi' self.LL = LeadLag(u=self.vi, T1=self.TC, T2=self.TB, info='Lead-lag for internal delays', zero_out=True, ) self.LA = LagAntiWindup(u=self.LL_y, T=self.TA, K=self.KA, upper=self.VRMAX, lower=self.VRMIN, info='Anti-windup lag', ) self.W = Washout(u=self.vp, T=self.TF1, K=self.KF1, info='Signal conditioner' ) self.vout.e_str = 'ue * omega * vp - vout'
def __init__(self, system, config): ExcBase.__init__(self, system, config) ExcVsum.__init__(self) self.UEL0.v_str = '-999' self.OEL0.v_str = '999' self.flags.nr_iter = True # NOTE: e_str `KC*XadIfd / INT_y - IN` causes numerical inaccuracies self.IN = Algeb(tex_name='I_N', info='Input to FEX', v_str='1', v_iter='KC * XadIfd - INT_y * IN', e_str='ue * (KC * XadIfd - INT_y * IN)', diag_eps=True, ) self.FEX = Piecewise(u=self.IN, points=(0, 0.433, 0.75, 1), funs=('1', '1 - 0.577*IN', 'sqrt(0.75 - IN ** 2)', '1.732*(1 - IN)', 0), info='Piecewise function FEX', ) self.FEX.y.v_str = '1' self.FEX.y.v_iter = self.FEX.y.e_str # control block begin self.LG = Lag(self.v, T=self.TR, K=1, info='Voltage transducer', ) # input excitation voltages; self.vi = Algeb(info='Total input voltages', tex_name='V_i', unit='p.u.', e_str='ue * (-LG_y + vref + UEL + OEL + Vs - vi)', v_str='-v + vref', diag_eps=True, ) self.LL = LeadLag(u=self.vi, T1=self.TC, T2=self.TB, info='V_A, Lead-lag compensator', zero_out=True, ) # LL_y == VA self.VAMAXu = ConstService('VAMAX * ue + (1-ue) * 999') self.VAMINu = ConstService('VAMIN * ue + (1-ue) * -999') self.LA = LagAntiWindup(u=self.LL_y, T=self.TA, K=self.KA, upper=self.VAMAXu, lower=self.VAMINu, info='V_A, Anti-windup lag', ) # LA_y == VA self.HVG = HVGate(u1=self.UEL, u2=self.LA_y, info='HVGate for under excitation', ) self.LVG = LVGate(u1=self.HVG_y, u2=self.OEL, info='HVGate for under excitation', ) self.INTin = 'ue * (LVG_y - VFE)' ExcACSat.__init__(self) self.vref.v_str = 'v + VFE / KA' self.vref0 = PostInitService(info='Initial reference voltage input', tex_name='V_{ref0}', v_str='vref', ) self.WF = Washout(u=self.VFE, T=self.TF, K=self.KF, info='Stablizing circuit feedback', ) self.vout.e_str = 'ue * FEX_y * INT_y - vout'
def __init__(self, system, config): ExcBase.__init__(self, system, config) self.KPC = ConstService(v_str='KP * exp(1j * radians(THETAP))', tex_name='K_{PC}', info='KP polar THETAP', vtype=np.complex) # vd, vq, Id, Iq from SynGen self.vd = ExtAlgeb( src='vd', model='SynGen', indexer=self.syn, tex_name=r'V_d', info='d-axis machine voltage', ) self.vq = ExtAlgeb( src='vq', model='SynGen', indexer=self.syn, tex_name=r'V_q', info='q-axis machine voltage', ) self.Id = ExtAlgeb( src='Id', model='SynGen', indexer=self.syn, tex_name=r'I_d', info='d-axis machine current', ) self.Iq = ExtAlgeb( src='Iq', model='SynGen', indexer=self.syn, tex_name=r'I_q', info='q-axis machine current', ) # control block begin self.LG = Lag( self.v, T=self.TR, K=1, info='Voltage transducer', ) self.UEL = Algeb(info='Interface var for under exc. limiter', tex_name='U_{EL}', v_str='0', e_str='0 - UEL') self.VE = VarService( tex_name='V_E', info='VE', v_str='Abs(KPC*(vd + 1j*vq) + 1j*(KI + KPC*XL)*(Id + 1j*Iq))', ) self.IN = Algeb( tex_name='I_N', info='Input to FEX', v_str='KC * XadIfd / VE', e_str='KC * XadIfd / VE - IN', ) self.FEX = Piecewise( u=self.IN, points=(0, 0.433, 0.75, 1), funs=('1', '1 - 0.577*IN', 'sqrt(0.75 - IN ** 2)', '1.732*(1 - IN)', 0), info='Piecewise function FEX', ) self.VBMIN = dummify(-9999) self.VGMIN = dummify(-9999) self.VB = GainLimiter( u='VE*FEX_y', K=1, upper=self.VBMAX, lower=self.VBMIN, no_lower=True, info='VB with limiter', ) self.VG = GainLimiter( u=self.vout, K=self.KG, upper=self.VGMAX, lower=self.VGMIN, no_lower=True, info='Feedback gain with HL', ) self.vrs = Algeb( tex_name='V_{RS}', info='VR subtract feedback VG', v_str='vf0 / VB_y / KM', e_str='LAW1_y - VG_y - vrs', ) self.vref = Algeb( info='Reference voltage input', tex_name='V_{ref}', unit='p.u.', v_str='(vrs + VG_y) / KA + v', e_str='vref0 - vref', ) self.vref0 = PostInitService( info='Initial reference voltage input', tex_name='V_{ref0}', v_str='vref', ) # input excitation voltages; PSS outputs summed at vi self.vi = Algeb( info='Total input voltages', tex_name='V_i', unit='p.u.', e_str='-LG_y + vref - vi', v_str='-v + vref', ) self.vil = Algeb(info='Input voltage after limit', tex_name='V_{il}', v_str='HLI_zi*vi + HLI_zl*VIMIN + HLI_zu*VIMAX', e_str='HLI_zi*vi + HLI_zl*VIMIN + HLI_zu*VIMAX - vil') self.HG = HVGate( u1=self.UEL, u2=self.vil, info='HVGate for under excitation', ) self.LL = LeadLag( u=self.HG_y, T1=self.TC, T2=self.TB, info='Regulator', zero_out=True, ) # LL_y == VA self.LAW1 = LagAntiWindup( u=self.LL_y, T=self.TA, K=self.KA, lower=self.VRMIN, upper=self.VRMAX, info='Lag AW on VR', ) # LAW1_y == VR self.HLI = HardLimiter( u=self.vi, lower=self.VIMIN, upper=self.VIMAX, info='Input limiter', ) self.LAW2 = LagAntiWindup( u=self.vrs, T=self.TM, K=self.KM, lower=self.VMMIN, upper=self.VMMAX, info='Lag AW on VM', ) # LAW2_y == VM self.vout.e_str = 'VB_y * LAW2_y - vout'
def __init__(self, system, config): ExcBase.__init__(self, system, config) self.vref0 = ConstService( info='Initial reference voltage input', tex_name='V_{ref0}', v_str='v + vf0 / KA', ) self.vref = Algeb(info='Reference voltage input', tex_name='V_{ref}', unit='p.u.', v_str='vref0', e_str='vref0 - vref') # input excitation voltages; PSS outputs summed at vi self.vi = Algeb( info='Total input voltages', tex_name='V_i', unit='p.u.', ) self.vi.v_str = 'vf0 / KA' self.vi.e_str = '(vref - LG_y - WF_y) - vi' self.LG = Lag( u=self.v, T=self.TR, K=1, info='Sensing delay', ) self.HLI = HardLimiter( u=self.vi, lower=self.VIMIN, upper=self.VIMAX, info='Hard limiter on input', ) self.vl = Algeb( info='Input after limiter', tex_name='V_l', v_str='HLI_zi*vi + HLI_zu*VIMAX + HLI_zl*VIMIN', e_str='HLI_zi*vi + HLI_zu*VIMAX + HLI_zl*VIMIN - vl', ) self.LL = LeadLag(u=self.vl, T1=self.TC, T2=self.TB, info='Lead-lag compensator', zero_out=True) self.LR = Lag(u=self.LL_y, T=self.TA, K=self.KA, info='Regulator') self.WF = Washout(u=self.LR_y, T=self.TF, K=self.KF, info='Stablizing circuit feedback') # the following uses `XadIfd` for `IIFD` in the PSS/E manual self.vfmax = Algeb( info='Upper bound of output limiter', tex_name='V_{fmax}', v_str='VRMAX - KC * XadIfd', e_str='VRMAX - KC * XadIfd - vfmax', ) self.vfmin = Algeb( info='Lower bound of output limiter', tex_name='V_{fmin}', v_str='VRMIN - KC * XadIfd', e_str='VRMIN - KC * XadIfd - vfmin', ) self.HLR = HardLimiter(u=self.WF_y, lower=self.vfmin, upper=self.vfmax, info='Hard limiter on regulator output') self.vout.e_str = 'LR_y*HLR_zi + vfmin*HLR_zl + vfmax*HLR_zu - vout'
def __init__(self, system, config): ExcBase.__init__(self, system, config) # Set VRMAX to 999 when VRMAX = 0 self._zVRM = FlagValue( self.VRMAX, value=0, tex_name='z_{VRMAX}', ) self.VRMAXc = ConstService( v_str='VRMAX + 999*(1-_zVRM)', info='Set VRMAX=999 when zero', ) self.LG = Lag( u=self.v, T=self.TR, K=1, info='Transducer delay', ) self.SAT = ExcQuadSat( self.E1, self.SE1, self.E2, self.SE2, info='Field voltage saturation', ) self.Se0 = ConstService( tex_name='S_{e0}', v_str='(vf0>SAT_A) * SAT_B*(SAT_A-vf0) ** 2 / vf0', ) self.vfe0 = ConstService( v_str='vf0 * (KE + Se0)', tex_name='V_{FE0}', ) self.vref0 = ConstService( info='Initial reference voltage input', tex_name='V_{ref0}', v_str='v + vfe0 / KA', ) self.vref = Algeb(info='Reference voltage input', tex_name='V_{ref}', unit='p.u.', v_str='vref0', e_str='vref0 - vref') self.vi = Algeb( info='Total input voltages', tex_name='V_i', unit='p.u.', v_str='vref0 - v', e_str='(vref - v - WF_y) - vi', ) self.LL = LeadLag( u=self.vi, T1=self.TC, T2=self.TB, info='Lead-lag compensator', zero_out=True, ) self.UEL = Algeb(info='Interface var for under exc. limiter', tex_name='U_{EL}', v_str='0', e_str='0 - UEL') self.HG = HVGate( u1=self.UEL, u2=self.LL_y, info='HVGate for under excitation', ) self.VRU = VarService( v_str='VRMAXc * v', tex_name='V_T V_{RMAX}', ) self.VRL = VarService( v_str='VRMIN * v', tex_name='V_T V_{RMIN}', ) # TODO: WARNING: HVGate is temporarily skipped self.LA = LagAntiWindup( u=self.LL_y, T=self.TA, K=self.KA, upper=self.VRU, lower=self.VRL, info='Anti-windup lag', ) # LA_y == VR # `LessThan` may be causing memory issue in (SL_z0 * vout) - uncertain yet self.SL = LessThan(u=self.vout, bound=self.SAT_A, equal=False, enable=True, cache=False) self.Se = Algeb( tex_name=r"S_e(|V_{out}|)", info='saturation output', v_str='Se0', e_str='SL_z0 * (INT_y - SAT_A) ** 2 * SAT_B / INT_y - Se', ) self.VFE = Algeb(info='Combined saturation feedback', tex_name='V_{FE}', unit='p.u.', v_str='vfe0', e_str='INT_y * (KE + Se) - VFE') self.INT = Integrator( u='LA_y - VFE', T=self.TE, K=1, y0=self.vf0, info='Integrator', ) self.WF = Washout(u=self.INT_y, T=self.TF1, K=self.KF, info='Feedback to input') self.vout.e_str = 'INT_y - vout'
def __init__(self, system, config): PSSBase.__init__(self, system, config) # ALL THE FOLLOWING IS FOR INPUT 2 # retrieve indices of bus and bus freq self.buss2 = DataSelect(self.busr2, self.bus, info='selected bus (bus or busr)') self.busfreq2 = DeviceFinder(self.busf2, link=self.buss2, idx_name='bus') # from Bus self.v2 = ExtAlgeb( model='Bus', src='v', indexer=self.buss2, tex_name=r'V', info='Bus (or busr2, if given) terminal voltage', ) # from BusFreq 2 self.f2 = ExtAlgeb(model='FreqMeasurement', src='f', indexer=self.busfreq2, export=False, info='Bus frequency 2') # Config self.config.add(OrderedDict([('freq_model', 'BusFreq')])) self.config.add_extra( '_help', {'freq_model': 'default freq. measurement model'}) self.config.add_extra('_alt', {'freq_model': ('BusFreq', )}) self.busf.model = self.config.freq_model self.busf2.model = self.config.freq_model # input signal switch self.dv = Derivative(self.v) self.dv2 = Derivative(self.v2) self.SnSb = ExtService( model='SynGen', src='M', indexer=self.syn, attr='pu_coeff', info='Machine base to sys base factor for power', tex_name='(Sb/Sn)') self.SW = Switcher( u=self.MODE, options=[0, 1, 2, 3, 4, 5, 6, np.nan], ) self.SW2 = Switcher( u=self.MODE2, options=[0, 1, 2, 3, 4, 5, 6, np.nan], ) # Input signals self.sig = Algeb( tex_name='S_{ig}', info='Input signal', ) self.sig.v_str = 'SW_s1*(omega-1) + SW_s2*0 + SW_s3*(tm0/SnSb) + ' \ 'SW_s4*(tm-tm0) + SW_s5*v + SW_s6*0' self.sig.e_str = 'SW_s1*(omega-1) + SW_s2*(f-1) + SW_s3*(te/SnSb) + ' \ 'SW_s4*(tm-tm0) + SW_s5*v + SW_s6*dv_v - sig' self.sig2 = Algeb( tex_name='S_{ig2}', info='Input signal 2', ) self.sig2.v_str = 'SW2_s1*(omega-1) + SW2_s2*0 + SW2_s3*(tm0/SnSb) + ' \ 'SW2_s4*(tm-tm0) + SW2_s5*v2 + SW2_s6*0' self.sig2.e_str = 'SW2_s1*(omega-1) + SW2_s2*(f2-1) + SW2_s3*(te/SnSb) + ' \ 'SW2_s4*(tm-tm0) + SW2_s5*v2 + SW2_s6*dv2_v - sig2' self.L1 = Lag( u=self.sig, K=self.K1, T=self.T1, info='Transducer 1', ) self.L2 = Lag( u=self.sig2, K=self.K2, T=self.T2, info='Transducer 2', ) self.IN = Algeb( tex_name='I_N', info='Sum of inputs', v_str='L1_y + L2_y', e_str='L1_y + L2_y - IN', ) self.WO = WashoutOrLag( u=self.IN, K=self.T3, T=self.T4, ) self.LL1 = LeadLag( u=self.WO_y, T1=self.T5, T2=self.T6, zero_out=True, ) self.LL2 = LeadLag( u=self.LL1_y, T1=self.T7, T2=self.T8, zero_out=True, ) self.LL3 = LeadLag( u=self.LL2_y, T1=self.T9, T2=self.T10, zero_out=True, ) self.VSS = GainLimiter(u=self.LL3_y, K=1, lower=self.LSMIN, upper=self.LSMAX) self.VOU = ConstService(v_str='VCUr + v0') self.VOL = ConstService(v_str='VCLr + v0') self.OLIM = Limiter(u=self.v, lower=self.VOL, upper=self.VOU, info='output limiter') self.vsout.e_str = 'OLIM_zi * VSS_y - vsout'
def __init__(self, system, config): PSSBase.__init__(self, system, config) self.config.add(OrderedDict([('freq_model', 'BusFreq')])) self.config.add_extra( '_help', {'freq_model': 'default freq. measurement model'}) self.config.add_extra('_alt', {'freq_model': ('BusFreq', )}) self.busf.model = self.config.freq_model self.dv = Derivative(self.v) self.SnSb = ExtService( model='SynGen', src='M', indexer=self.syn, attr='pu_coeff', info='Machine base to sys base factor for power', tex_name='(Sb/Sn)') self.SW = Switcher( u=self.MODE, options=[1, 2, 3, 4, 5, 6], ) self.sig = Algeb( tex_name='S_{ig}', info='Input signal', ) self.sig.v_str = 'SW_s0*(omega-1) + SW_s1*0 + SW_s2*(tm0/SnSb) + ' \ 'SW_s3*(tm-tm0) + SW_s4*v + SW_s5*0' self.sig.e_str = 'SW_s0*(omega-1) + SW_s1*(f-1) + SW_s2*(te/SnSb) + ' \ 'SW_s3*(tm-tm0) + SW_s4*v + SW_s5*dv_v - sig' self.F1 = Lag2ndOrd(u=self.sig, K=1, T1=self.A1, T2=self.A2) self.F2 = LeadLag2ndOrd(u=self.F1_y, T1=self.A3, T2=self.A4, T3=self.A5, T4=self.A6, zero_out=True) self.LL1 = LeadLag(u=self.F2_y, T1=self.T1, T2=self.T2, zero_out=True) self.LL2 = LeadLag(u=self.LL1_y, T1=self.T3, T2=self.T4, zero_out=True) self.Vks = Gain(u=self.LL2_y, K=self.KS) self.WO = WashoutOrLag(u=self.Vks_y, T=self.T6, K=self.T5, name='WO', zero_out=True) # WO_y == Vss self.VLIM = Limiter(u=self.WO_y, lower=self.LSMIN, upper=self.LSMAX, info='Vss limiter') self.Vss = Algeb( tex_name='V_{ss}', info='Voltage output before output limiter', e_str='VLIM_zi * WO_y + VLIM_zu * LSMAX + VLIM_zl * LSMIN - Vss') self.OLIM = Limiter(u=self.v, lower=self.VCLr, upper=self.VCUr, info='output limiter') self.vsout.e_str = 'OLIM_zi * Vss - vsout'
def __init__(self, system, config): ExcBase.__init__(self, system, config) self.Se0 = ConstService( info='Initial saturation output', tex_name='S_{e0}', v_str='Ae * exp(Be * vf0)', ) self.vr0 = ConstService(info='Initial vr', tex_name='V_{r0}', v_str='(KE + Se0) * vf0') self.vb0 = ConstService(info='Initial vb', tex_name='V_{b0}', v_str='vr0 / KA') self.vref0 = ConstService(info='Initial reference voltage input', tex_name='V_{ref0}', v_str='vb0 + v') self.Se = Algeb(info='Saturation output', tex_name='S_e', unit='p.u.', v_str='Se0', e_str='Ae * exp(Be * vout) - Se') self.vp = State( info='Voltage after saturation feedback, before speed term', tex_name='V_p', unit='p.u.', v_str='vf0', e_str='(LA_x - KE * vp - Se * vp) / TE') self.LS = Lag(u=self.v, T=self.TR, K=1.0, info='Sensing lag TF') self.vref = Algeb(info='Reference voltage input', tex_name='V_{ref}', unit='p.u.', v_str='vref0', e_str='vref0 - vref') self.vi = Algeb( info='Total input voltages', tex_name='V_i', unit='p.u.', v_str='vb0', e_str='(vref - LS_x - W_y) - vi', ) self.LL = LeadLag( u=self.vi, T1=self.TC, T2=self.TB, info='Lead-lag for internal delays', ) self.LA = LagAntiWindup( u=self.LL_y, T=self.TA, K=self.KA, upper=self.VRMAX, lower=self.VRMIN, info='Anti-windup lag', ) self.W = Washout( u=self.vp, T=self.TF1, K=self.KF1, ) self.vout.e_str = 'omega * vp - vout'
def __init__(self, system, config): TGBase.__init__(self, system, config, add_sn=False) # check if K1-K8 sums up to 1 self._sumK18 = ConstService(v_str='K1+K2+K3+K4+K5+K6+K7+K8', info='summation of K1-K8', tex_name=r"\sum_{i=1}^8 K_i") self._K18c1 = InitChecker( u=self._sumK18, info='summation of K1-K8 and 1.0', equal=1, ) # check if `tm0 * (K2 + k4 + K6 + K8) = tm02 *(K1 + K3 + K5 + K7) self._tm0K2 = PostInitService( info='mul of tm0 and (K2+K4+K6+K8)', v_str='zsyn2*tm0*(K2+K4+K6+K8)', ) self._tm02K1 = PostInitService( info='mul of tm02 and (K1+K3+K5+K6)', v_str='tm02*(K1+K3+K5+K7)', ) self._Pc = InitChecker( u=self._tm0K2, info='proportionality of tm0 and tm02', equal=self._tm02K1, ) self.Sg2 = ExtParam( src='Sn', model='SynGen', indexer=self.syn2, allow_none=True, default=0.0, tex_name='S_{n2}', info='Rated power of Syn2', unit='MVA', export=False, ) self.Sg12 = ParamCalc( self.Sg, self.Sg2, func=np.add, tex_name="S_{g12}", info='Sum of generator power ratings', ) self.Sn = NumSelect( self.Tn, fallback=self.Sg12, tex_name='S_n', info='Turbine or Gen rating', ) self.zsyn2 = FlagValue( self.syn2, value=None, tex_name='z_{syn2}', info='Exist flags for syn2', ) self.tm02 = ExtService( src='tm', model='SynGen', indexer=self.syn2, tex_name=r'\tau_{m02}', info='Initial mechanical input of syn2', allow_none=True, default=0.0, ) self.tm012 = ConstService( info='total turbine power', v_str='tm0 + tm02', ) self.tm2 = ExtAlgeb( src='tm', model='SynGen', indexer=self.syn2, allow_none=True, tex_name=r'\tau_{m2}', e_str='zsyn2 * u * (PLP - tm02)', info='Mechanical power to syn2', ) self.wd = Algeb( info='Generator under speed', unit='p.u.', tex_name=r'\omega_{dev}', v_str='0', e_str='(wref - omega) - wd', ) self.LL = LeadLag( u=self.wd, T1=self.T2, T2=self.T1, K=self.K, info='Signal conditioning for wd', ) # `P0` == `tm0` self.vs = Algeb( info='Valve speed', tex_name='V_s', v_str='0', e_str='(LL_y + tm012 + paux - IAW_y) / T3 - vs', ) self.HL = HardLimiter( u=self.vs, lower=self.UC, upper=self.UO, info='Limiter on valve acceleration', ) self.vsl = Algeb( info='Valve move speed after limiter', tex_name='V_{sl}', v_str='vs * HL_zi + UC * HL_zl + UO * HL_zu', e_str='vs * HL_zi + UC * HL_zl + UO * HL_zu - vsl', ) self.IAW = IntegratorAntiWindup( u=self.vsl, T=1, K=1, y0=self.tm012, lower=self.PMIN, upper=self.PMAX, info='Valve position integrator', ) self.L4 = Lag( u=self.IAW_y, T=self.T4, K=1, info='first process', ) self.L5 = Lag( u=self.L4_y, T=self.T5, K=1, info='second (reheat) process', ) self.L6 = Lag( u=self.L5_y, T=self.T6, K=1, info='third process', ) self.L7 = Lag( u=self.L6_y, T=self.T7, K=1, info='fourth (second reheat) process', ) self.PHP = Algeb( info='HP output', tex_name='P_{HP}', v_str='K1*L4_y + K3*L5_y + K5*L6_y + K7*L7_y', e_str='K1*L4_y + K3*L5_y + K5*L6_y + K7*L7_y - PHP', ) self.PLP = Algeb( info='LP output', tex_name='P_{LP}', v_str='K2*L4_y + K4*L5_y + K6*L6_y + K8*L7_y', e_str='K2*L4_y + K4*L5_y + K6*L6_y + K8*L7_y - PLP', ) self.pout.e_str = 'PHP - pout'
def __init__(self, system, config): TG2Data.__init__(self) TGBase.__init__(self, system, config) self.config.add({'deadband': 0, 'hardlimit': 1}) self.config.add_extra("_help", deadband="enable input dead band", hardlimit="enable output hard limit") self.config.add_extra( "_alt", deadband=(0, 1), hardlimit=(0, 1), ) self.config.add_extra( "_tex", deadband="z_{deadband}", hardlimit="z_{hardlimit}", ) self.gain = ConstService( v_str='u / R', tex_name='G', ) self.w_d = Algeb( info= 'Generator speed deviation before dead band (positive for under speed)', tex_name=r'\omega_{dev}', v_str='0', e_str='u*(wref-omega) - w_d', ) self.w_db = DeadBandRT( u=self.w_d, center=self.dbc, lower=self.dbl, upper=self.dbu, enable=self.config.deadband, ) self.w_dm = Algeb(info='Measured speed deviation after dead band', tex_name=r'\omega_{dm}', v_str='0', e_str='(1 - w_db_zi) * w_d + ' 'w_db_zlr * dbl + ' 'w_db_zur * dbu - ' 'w_dm') self.w_dmg = Algeb( info='Speed deviation after dead band after gain', tex_name=r'\omega_{dmG}', v_str='0', e_str='gain * w_dm - w_dmg', ) self.ll = LeadLag( u=self.w_dmg, T1=self.T1, T2=self.T2, ) self.pnl = Algeb( info='Power output before hard limiter', tex_name='P_{nl}', v_str='tm0', e_str='tm0 + ll_y - pnl', ) self.plim = HardLimiter( u=self.pnl, lower=self.pmin, upper=self.pmax, enable=self.config.hardlimit, ) self.pout.e_str = 'pnl * plim_zi + pmax * plim_zu + pmin * plim_zl - pout'
def __init__(self, system, config): ExcBase.__init__(self, system, config) self.flags.nr_iter = True self.SAT = ExcQuadSat(self.E1, self.SE1, self.E2, self.SE2, info='Field voltage saturation', ) self.SL = LessThan(u=self.vout, bound=self.SAT_A, equal=False, enable=True, cache=False) self.Se0 = ConstService(info='Initial saturation output', tex_name='S_{e0}', v_str='Indicator(vf0>SAT_A) * SAT_B * (SAT_A - vf0) ** 2 / vf0', ) self.IN = Algeb(tex_name='I_N', info='Input to FEX', v_str='1', v_iter='KC * XadIfd - INT_y * IN', e_str='KC * XadIfd / INT_y - IN', ) self.FEX = Piecewise(u=self.IN, points=(0, 0.433, 0.75, 1), funs=('1', '1 - 0.577*IN', 'sqrt(0.75 - IN ** 2)', '1.732*(1 - IN)', 0), info='Piecewise function FEX', ) self.FEX.y.v_iter = '1' self.FEX.y.v_iter = self.FEX.y.e_str self.LG = Lag(self.v, T=self.TR, K=1, info='Voltage transducer', ) self.vi = Algeb(info='Total input voltages', tex_name='V_i', unit='p.u.', e_str='-v + vref - WF_y - vi', v_str='-v + vref', ) self.LL = LeadLag(u=self.vi, T1=self.TC, T2=self.TB, info='Regulator', zero_out=True, ) self.LA = LagAntiWindup(u=self.LL_y, T=self.TA, K=self.KA, lower=self.VRMIN, upper=self.VRMAX, info='Lag AW on VR', ) self.INT = Integrator(u='LA_y - VFE', T=self.TE, K=1, y0=0, info='Integrator', ) self.INT.y.v_str = 0.1 self.INT.y.v_iter = 'INT_y * FEX_y - vf0' self.Se = Algeb(tex_name=r"S_e(|V_{out}|)", info='saturation output', v_str='Se0', e_str='SL_z0 * (INT_y - SAT_A) ** 2 * SAT_B / INT_y - Se', ) self.VFE = Algeb(info='Combined saturation feedback', tex_name='V_{FE}', unit='p.u.', v_str='INT_y * (KE + Se) + XadIfd * KD', e_str='INT_y * (KE + Se) + XadIfd * KD - VFE' ) self.vref = Algeb(info='Reference voltage input', tex_name='V_{ref}', unit='p.u.', v_str='v + VFE / KA', e_str='vref0 - vref', ) self.vref0 = PostInitService(info='Initial reference voltage input', tex_name='V_{ref0}', v_str='vref', ) self.WF = Washout(u=self.VFE, T=self.TF, K=self.KF, info='Stablizing circuit feedback', ) self.vout.e_str = 'INT_y * FEX_y - vout'
def __init__(self, system, config): ExcBase.__init__(self, system, config) self.flags.nr_iter = True ExcVsum.__init__(self) self.UEL0.v_str = '-999' self.OEL0.v_str = '999' self.ulim = ConstService('9999') self.llim = ConstService('-9999') self.SWUEL = Switcher(u=self.UELc, options=[0, 1, 2, 3], tex_name='SW_{UEL}', cache=True) self.SWVOS = Switcher(u=self.VOSc, options=[0, 1, 2], tex_name='SW_{VOS}', cache=True) # control block begin self.LG = Lag( self.v, T=self.TR, K=1, info='Voltage transducer', ) self.SG0 = ConstService(v_str='0', info='SG initial value.') self.SG = Algeb( tex_name='SG', info='SG', v_str='SG0', e_str='SG0 - SG', ) self.zero = ConstService('0') self.LR = GainLimiter( u='XadIfd - ILR', K=self.KLR, R=1, upper=self.ulim, lower=self.zero, no_upper=True, info='Exciter output current gain limiter', ) self.VA0 = PostInitService(tex_name='V_{A0}', v_str='vf0 - SWVOS_s2 * SG + LR_y', info='VA (LA_y) initial value') self.vref.v_str = 'ue * (v + (vf0 - SWVOS_s2 * SG + LR_y) / KA - SWVOS_s1 * SG - SWUEL_s1 * UEL)' self.vref.v_iter = 'ue * (v + (vf0 - SWVOS_s2 * SG + LR_y) / KA - SWVOS_s1 * SG - SWUEL_s1 * UEL)' self.vref0 = PostInitService( info='Initial reference voltage input', tex_name='V_{ref0}', v_str='vref', ) self.vi = Algeb( info='Total input voltages', tex_name='V_i', unit='p.u.', e_str= 'ue * (-LG_y + vref - WF_y + SWUEL_s1 * UEL + SWVOS_s1 * SG + Vs) - vi', v_iter= 'ue * (-LG_y + vref - WF_y + SWUEL_s1 * UEL + SWVOS_s1 * SG + Vs)', v_str= 'ue * (-LG_y + vref - WF_y + SWUEL_s1 * UEL + SWVOS_s1 * SG + Vs)', ) self.vil = GainLimiter( u=self.vi, K=1, R=1, upper=self.VIMAX, lower=self.VIMIN, info='Exciter voltage input limiter', ) self.UEL2 = Algeb( tex_name='UEL_2', info='UEL_2 as HVG1 u1', v_str='ue * (SWUEL_s2 * UEL + (1 - SWUEL_s2) * llim)', e_str='ue * (SWUEL_s2 * UEL + (1 - SWUEL_s2) * llim) - UEL2', ) self.HVG1 = HVGate( u1=self.UEL2, u2=self.vil_y, info='HVGate after V_I', ) self.LL = LeadLag( u=self.HVG1_y, T1=self.TC, T2=self.TB, info='Lead-lag compensator', zero_out=True, ) self.LL1 = LeadLag( u=self.LL_y, T1=self.TC1, T2=self.TB1, info='Lead-lag compensator 1', zero_out=True, ) self.LA = LagAntiWindup( u=self.LL1_y, T=self.TA, K=self.KA, upper=self.VAMAX, lower=self.VAMIN, info='V_A, Anti-windup lag', ) # LA_y is VA self.vas = Algeb( tex_name=r'V_{As}', info='V_A after subtraction, as HVG u2', v_str='ue * (SWVOS_s2 * SG + LA_y - LR_y)', v_iter='ue * (SWVOS_s2 * SG + LA_y - LR_y)', e_str='ue * (SWVOS_s2 * SG + LA_y - LR_y) - vas', ) self.UEL3 = Algeb( tex_name='UEL_3', info='UEL_3 as HVG u1', v_str='ue * (SWUEL_s3 * UEL + (1 - SWUEL_s3) * llim)', e_str='ue * (SWUEL_s3 * UEL + (1 - SWUEL_s3) * llim) - UEL3', ) self.HVG = HVGate( u1=self.UEL3, u2=self.vas, info='HVGate for under excitation', ) self.LVG = LVGate( u1=self.HVG_y, u2=self.OEL, info='HVGate for over excitation', ) # vd, vq, Id, Iq from SynGen self.vd = ExtAlgeb( src='vd', model='SynGen', indexer=self.syn, tex_name=r'V_d', info='d-axis machine voltage', ) self.vq = ExtAlgeb( src='vq', model='SynGen', indexer=self.syn, tex_name=r'V_q', info='q-axis machine voltage', ) self.efdu = VarService( info='Output exciter voltage upper bound', tex_name=r'efd_{u}', v_str='Abs(vd + 1j*vq) * VRMAX - KC * XadIfd', ) self.efdl = VarService(info='Output exciter voltage lower bound', tex_name=r'efd_{l}', v_str='Abs(vd + 1j*vq) * VRMIN') self.vol = GainLimiter( u=self.LVG_y, K=1, R=1, upper=self.efdu, lower=self.efdl, info='Exciter output limiter', ) self.WF = Washout( u=self.LVG_y, T=self.TF, K=self.KF, info='V_F, Stablizing circuit feedback', ) self.vout.e_str = 'ue * vol_y - vout'