9 5-5 jl E q jl b ig. hasor iagram of roun rotor synchronous generator ( - ) b 滞相区姨 b - q ig. The limit power iagram of roun rotor sy

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1 5 ELECTRI C MACHINES AND CONTROL ol. 5 No. Dec q q TU A Numerical analysis of steay state stability limit of salient synchronous generator in leaing power factor operation test LI Zhi-qiang HE eng-jun CHAO Hui U Yang-lin. China Electric ower Research InstituteBeijing 9China. Sichuan rovince Electric ower Inustry Debugging InstituteChengu 66China Abstract To stuy the limit of reactive power an power angle of salient synchronous generator in leaing power factor operation testthe steay state stability power equations uner two ifferent test conitions were establishe. Through the numerical analysis on those two power equations the variation law of reactive power an power angle limit with the ifferent test voltages an electric parametersas well asthe influence of generator saturation on the steay state stability were reveale. The results show that the leaing phase epth of salient synchronous generator with the light loa mainly epens on the q-reactancewith the same conition the smaller &q reactance is the bigger leaing reactive power an limit power angle can be allowe. The test voltages have a great influence on the limit reactive power while it is contrary to the limit power angle. It is somewhat conservative if the unsaturate parameters are aopte to calculate the limit reactive power an anglean the operation safety of the generator sets may be guarantee if the leaing epth can be controlle by this metho. Key wors leaing power factor operation test salient pole synchronous steay state stability power limit power angle limit

2 9 5-5 jl E q jl b ig. hasor iagram of roun rotor synchronous generator ( - ) b 滞相区姨 b - q ig. The limit power iagram of roun rotor synchronous generator. Eq b I δ φ = E q sinδ + - q sin δ + b + b q + b δ = 9 b = + b qb = q + b + - [ ] - b 啄 = 渍 [ ] I ( b + ) 进相区 + b q q E q

3 9 = E q sinδ + - q sin δ b b qb E q sinδ b ji ( - q) E q 啄渍 ji q 驻驻 jl b I + - q sin δ = b qb - q sin δtanδ b qb 5 I φ I qb cosφ I qb cosφ tanδ = = = + I qb sinφ + I qb sinφ qb + qb 7 sinδ = I qbcosφ = qb 8 E E b + - ( ( b ) - ) = + - q qb = b E + qb [ ( b ) ] - + [ ( b ) ] = Δ Δ Δ = I q sinφ = q Isinφ = 9 q } 9 Δ = I q cosφ = q Icosφ = q 8 = = - / 8 E = + q + q = = - - b ( ) b - + b b ~ 9 + b + q + q - b + b + q + b - b - b q q + b = 4 4. ig. hasor iagram of Salient synchronous generator E E = + qb ( ) + qb ( ) 5 /δ = δ = E 5 9 q cosδ + - q cos δ = 4 b b qb 4 tanδ + b + q + b + q + b + q + b - - q q + b = = b q + b = -. q sin δtanδ 6 b qb 4 = q b + b + + b - b - b = 8 8 = = - / 4

4 9 5 7 = q ( ) + b + = - ( ) + b + = - / + b ig. 4 The limit power of salient generator euce 4 from power equation of terminal sie 4 4. = 4 7 = - / q = / b 7 - / qb < - / b 4 a 4 b 7 4 a q = + b 4 5 = + % b + b 4 a 7 4 b 5 a 5 b =; q=.7; = =; q=.6; = =; q=.8; = 4 =.9; q=.7; = 5 =.; q=.7; = (a) 不同发电机参数下的极限功率 =; q=.7; =.5 =; q=.7; = =; q=.7; = (b) 不同发电机端电压下的极限功率 + b 4 5

5 9 4 6 b ig =; q=.7; = =; q=.6; = =; q=.8; = 4 =.9; q=.7; = 5 =.; q=.7; = (a) 不同参数下的发电机极限功率 =; q=.7; =.5 =; q=.7; = =; q=.7; = (b) 不同系统电压下的发电机极限功率 4 The limit power of salient generator euce from power equation of system sie 4 δ g E q 珘 = K s q 珘 q = K qs q - q 9% 95% q δ g = atan( + q ) q K s < K qs < 6 a 6 b =; q=.7; %= =; q=.6; %= =; q=.8; %= =.9; q=.7; %= =.; q=.7; %= a q q 6 ig (a) 不同参数下的发电机极限功角 =; q=.7; =.5 =; q=.7; = =; q=.7; = (b) 不同系统电压下的发电机极限功角 The limit power angle of salient generator euce from power equation of system sie 5 K s K qs. 95

6 K s=;k qs= K s=.9;k qs=.95 K s=.85;k qs=.95 K s=.85;k qs=.9 K s=.8;k qs= J. ig. 7 The limit power of salient generator on ifferent saturation egree TANG YongZHONG WuzhiSUN Huaonget al. Stuy on 9 mechanism of power system voltage stabilityj. ower System Technology J. 9 6 K s=;k qs= K s=.9;k qs=.95 K s=.85;k qs=.95 SHAO YixiangCHEN NingZHU Lingzhiet al. Reuce Jacobian matrix base metho to assess local static reactive power / volt- 4 K s=.85;k qs=.9 K s=.8;k qs=.9 age supporting ability of interconnecte win farm J. ower System.5.5 Technology J LI ZuohongLI JianhuaLI Changxin. Stuy on static voltage stability of win power J. Avances of ower System & Hyroelectric 8 Engineering ig. 8 The limit power angle of salient generator 4NASER I SGARBA A O. Anaya-Laraet al. oltage stability of on ifferent saturation egree transmission network with ifferent penetration levels of win generationc/ /CariffUnite kingom International Universities ower Engineering Conference NGUYEN Tung Linh. oltage stability analysis of gris connecte 7 8 win generatorsc/ /9 IEEE Conference on Inustrial Electronics an Applications J WEI iaoguangchi YongningWEI iaoyunet al. Transient voltage stability enhancement of inuction generator-base win 6 farm by SC-HDC J. Transactions of China Electrotechnical Society WANG iaoyuwalmir reitas. Influence of voltage positive feeback anti-islaning scheme on inverter-base istribute generator stability J. IEEE Transactions on ower Delivery RAOUI HKALANTAR M. Reactive power rescheuling with generator ranking for voltage stability improvementj. Energy Conversion an Management q 9DL /T 4-7 S. q DL /T 97-5 S. GB /T764-8 S.

7 95 GB /T S. 6. J J LIANG Ruxuan. Stability-limit of Salient-pole Synchronous Generator J. Large Electric Machine an Hyraulic Turbine LO AANDERSSON GHILL D J. oltage epenent reactive power limits for voltage stability stuiesj. IEEE Transac- 5. tions on ower Systems J GUO JingbingSHAN Zhouping. Analytic metho of the static stable bounary for hyro-generator an its applicationj. Electric ower J ANINI AYOHN T J. iel assessment of generators reactive capabilityj. IEEE Transactions on ower Systems 檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪檪 88 BHAT S BERNSTEIN D S. inite-time stability of continuous autonomous systems J. SIAM Journal on Control an Optimization CHEN WeishengJIAO L C. inite-time stability theorem of stochastic nonlinear systems J. Automatica AMATO AMBROSINO RCOSENTINO Cet al. Input-output finite time stabilization of linear systems J. Automatica SHIMA TOSHMAN YSHINAR J. Efficient multiple moel a- aptive estimation in ballistic missile interception scenarios J. Journal of Guiance Control an Dynamics

2001年博士、硕士研究生招生计划表

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9 5-5 jl E q jl b ig. hasor iagram of roun rotor synchronous generator ( - ) b 滞相区 姨 b - q ig. The limit power iagram of roun rotor sy

9 5-5 jl E q jl b ig. hasor iagram of roun rotor synchronous generator ( - ) b 滞相区姨 b - q ig. The limit power iagram of roun rotor sy