The following exciting results are revealed: 1 When considering the influence of some nonlinear elements such as hard-limit of exciters, the effects of some devices such as Power System Stabilizer and Static Var Compensator which can introduce positive damping in power system, the reasonability of system parameter values in simulation, the SNB surface and HB surface on the boundary of SSSR will turn close to each other and even coalesce together; 2 Under some conditions, coupling between slow exciters and shunt capacitors will bring negative damping in power system dynamics, which increases the possibility of oscillatory instability. So the power system with mass shunt compensators is easily subjected to the oscillatory instability. In recent years, chaotic phenomena of power system have been reported many times. Some simulation studies even found chaos existing inside the power system SSSR. In this dissertation, chaotic phenomena in power systems are thoroughly studied in order to make clear the relation of chaos and SSSR. The following results are derived: 1 Based on Li-Yorke Theorem and their definition on the chaos, the existence of chaos in power system is verified; 2 Three possible routes of causing chaos in power system are found and deeply investigated. They are route of cascading period doubling, route of directly initial energizing and route of torus bifurcation (or quasi-periodicity). The latter two routes are investigated for the first time in power system stability studies; 3 When the stability conditions of chaos are broken, it is found they can lead to voltage collapse, angle divergence, or voltage collapse with angle divergence simultaneously.

針對(duì)在電力系統(tǒng)小擾動(dòng)穩(wěn)定區(qū)域內(nèi)可能存在混沌吸引域的有關(guān)報(bào)道黄色黄片一个人www，本文深入研究了電力系統(tǒng)混沌現(xiàn)象的出現(xiàn)途徑和與系統(tǒng)失穩(wěn)模式之間的關(guān)系：1利用Li-Yorke定理和Li-Yorke的混沌定義91网址在线，從理論上證明了電力系統(tǒng)混沌現(xiàn)象的存在性欧美激情笫一欧美精品；2發(fā)現(xiàn)了電力系統(tǒng)中導(dǎo)致混沌出現(xiàn)的三種可能途徑：倍周期分岔導(dǎo)致混沌免费无码十八禁污污网站、初始能量直接激發(fā)混沌和經(jīng)由環(huán)面分岔導(dǎo)致混沌，并對(duì)后兩種新發(fā)現(xiàn)的途徑進(jìn)行了較為細(xì)致的研究日韩精品影视系列在线播放视频免费；3發(fā)現(xiàn)了混沌極限環(huán)破裂導(dǎo)致電壓崩潰人人操人人射人人插、角度失穩(wěn)以及電壓崩潰和角度失穩(wěn)同時(shí)出現(xiàn)的現(xiàn)象，其中混沌極限環(huán)破裂導(dǎo)致系統(tǒng)角度失穩(wěn)和電壓崩潰及角度失穩(wěn)同時(shí)出現(xiàn)的現(xiàn)象均屬首次報(bào)道秋葵视频卓版安装；4證明由微分-代數(shù)方程描述的系統(tǒng)模型，其小擾動(dòng)穩(wěn)定域的邊界只包含HB亚洲国产AⅤ精品一区二区高清、SNB和SIB三種分岔界面欧美大胆人伦姧裸体A片欧，在SSSR的內(nèi)部和邊界上，均不可能存在會(huì)導(dǎo)致混沌的點(diǎn)久久综合色天天久久18，從而將混沌現(xiàn)象排除在小擾動(dòng)穩(wěn)定域的研究之外丝袜第一页，簡(jiǎn)化了后者的研究工作。

When Tenen broke the first word of Genesis into its 'subatomic particles'(the word is actually comprised of two smaller words, meaning "fire" and "six-edged thorn"), he took the "thorn" to mean a tetrahedron and constructed a model of it, placing the "fire," or torus "vortex" form, inside.

當(dāng)特納把創(chuàng)世紀(jì)的首個(gè)單詞拆分成&亞原子粒子&（這個(gè)詞事實(shí)上是由兩個(gè)較小的單詞組成二级黄片免费观看，意思分別是&火&和&六角形&）性爱爱视频网站，他用&角&這個(gè)詞來(lái)代表一個(gè)四面體，并且為它建立了模型国产农村妇女打一炮，把&火&国产足交丝袜美女视频网站，或者是花托狀的&旋渦&放在里面。

Carpels 4–15, borne at base of flat or slightly concave torus; stipules not adnate to petiole.

心皮4-15精品99污，承擔(dān)平的或稍凹花托的在基部日韩在线www.；托葉而不是貼生于葉柄。

Achenes enclosed in cupular or urn-shaped torus.

在杯狀或者壇狀的花托里圍住的瘦果日韩午夜在线资源精品视频观看。