電力專業(yè)-專業(yè)外語-第3章

1、Chap.3 Power System Stability Part 1. Transient Stability Words and Expressions (A) transient stability 暫（瞬）態(tài)穩(wěn)定 pseudo-steady-state 準穩(wěn)態(tài) electromechanical transient 機電暫（瞬）態(tài) inertia 慣性 synchronism 同步 severe disturbance 劇烈的擾動 lightning stroke 雷擊Chap.3 Power System Stability break down 擊穿 ionized 已電離的 d

2、eionize v. 除去離子，電離消失 shock 沖擊，浪涌 break up 解列 subsystem 子系統(tǒng) resort 求助，訴清 quantitatively 數(shù)量上 qualitative 質量上，性質上Chap.3 Power System Stability Notes: 1. Because of the high moments of inertia of turbine-generator sets, the key requirement of slowly varying phase can be justified. Chap.3 Power System St

3、ability 2. Sixty-hertz line currents also flow through this ionized path, maintaining the ionization even after the lightning stroke energy has been dissipated. Chap.3 Power System Stability 3. The key question of transient stability is this: After a transient period, will the system “l(fā)ock” back int

4、o a steady-state condition, maintaining synchronism? Chap.3 Power System Stability 4. The insights one gets by using this method extend in a qualitative way to more general cases. Chap.3 Power System Stability Part 2 ModelWords and Expressions (A) equilibrium state 平衡狀態(tài)designate 指示，指派synchronous spe

5、ed 同步轉速 mechanical power 機械功率 sinusoidal steady state 正弦穩(wěn)態(tài) infinite bus 無窮大母線 approximate v.近似，接近, adj. 近似的，大約的Chap.3 Power System Stability Notes: 1. For simplicity, we ignore any transformers or assume that they have been “absorbed” into the generator or line models.Chap.3 Power System Stability P

6、art 3 Dynamic ModalWords and Expressions (A) instantaneous 瞬間的，即刻的，即時的dynamic modal 動態(tài)模型in nature 本質上rotor angle swing 轉子角度搖擺with respect to 相對于a synchronous rotating reference frame 同步旋轉參考坐標系superimpose 添加，雙重疊加 Chap.3 Power System Stablity oscillate 振蕩 mean 平均數(shù)，中間，中庸 uniform rotation 均勻轉速 proportio

7、ned to 與成比例 phase angle 相角 couple 連接，結合，耦合 Chap.3 Power System Stability Notes: Equation(3-7) gives the vital connection between , the internal voltage phase angle, and Qo+Q, the wafer angle (with respect to the synchronous rotating reference frame) . 譯：gives the connection between Chap.3 Power Syst

8、em Stablity Part 4 Energy Balance Words and Expressions (A) per unit system 標么制 kinetic energy 動能 bearing 軸承 conservation 保存，保持，守恒 instantaneous power 瞬時功率 angular momentum 角動量 normalize 規(guī)格化，正常地，標準地 normalize A with respect to B 以B為基準對A進行歸一化Chap.3 Power System Stability per unit inertia constant 標么慣

9、性常數(shù) angular velocity 角速度 in accordance with 依照，按照 according to Chap.3 Power System Stability Notes: 1. The range of values is small considering the enormous variation in J for different machines. 譯：就不同設備來說，J值不太相同，而H值得變化范圍則較小。 Chap.3 Power System Stability Part 5 Swing Equation Words and Expressions

10、(A)nonlinear differential equation 非線性微分方程swing equation 擺動方程spring 彈簧、發(fā)條、彈性analogy 類似，相似之處applied force 外力、施加動力damped oscillatory response 衰減振蕩響應rotating reference frame 旋轉參考系stationary reference frame 固定旋轉參考系Chap.3 Power System Stability 補充詞匯： 電力系統(tǒng)穩(wěn)定性 power system stability 電力系統(tǒng)靜態(tài)穩(wěn)定性 steady state

11、stability of a power system 電力系統(tǒng)暫態(tài)穩(wěn)定性 transient stability of a power system 電力系統(tǒng)條件穩(wěn)定性 conditional stability of a power system 電力系統(tǒng)固有穩(wěn)定性 inherent stability of a power system 搖擺曲線 swing curve 負荷穩(wěn)定性 load stabilityChap.3 Power System Stablity 系統(tǒng)狀態(tài)變量穩(wěn)定極限 stability limit of a system state variable 系統(tǒng)狀態(tài)變量穩(wěn)定裕度 stability margin of a system state variable 穩(wěn)定區(qū) stability zone 電機同步運行 synchronous operation o