需要金幣： 1000 個金幣 |
資料包括：完整論文 |  |
 |
| 轉(zhuǎn)換比率：金額 X 10=金幣數(shù)量， 例100元=1000金幣 | 論文字數(shù)：11649 |  | |
| 折扣與優(yōu)惠：團購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘 要:隨著社會的不斷發(fā)展，居民的生活對電能依賴性越來越高，致使越來越多的電力電子裝置投入到電網(wǎng)的運行之中，使得電網(wǎng)的諧波污染問題日益嚴重，對電力系統(tǒng)中的設(shè)備和裝置產(chǎn)生嚴重損害，影響電能的正常供應(yīng)，特別是在電力裝置發(fā)生短路，或電氣設(shè)備發(fā)生故障時，系統(tǒng)中的諧波分量受到其影響，將進一步增大。 本文通過在傳統(tǒng)雙繞組電力變壓器上附加控制繞組，并對其注入補償電流，從而對負載側(cè)產(chǎn)生的諧波電流進行抑制，以保障電網(wǎng)側(cè)電流不受其影響。在對諧波電流檢測時，本文采用以瞬時無功功率為基礎(chǔ)的 電流檢測法；在對補償電流進行控制時，本文采用三角波控制方法。最后通過Matlab對該方案進行建模和仿真，結(jié)果證明該方法對主要次諧波具有良好的抑制效果。 關(guān)鍵詞：諧波抑制 有源濾波器 電流檢測法 三角波比較控制 Matlab仿真
ABSTRACT:With the continuous development of society, people's life dependence on electricity is higher and higher, making more and more into the operation of the power grid, power electronic devices of power grid harmonic pollution problem is increasingly serious, serious damage to equipment and devices in power system, affect the normal supply of electricity, especially the short circuit in an electrical device, or electrical equipment failure occurs, the harmonic component in the system by its influence, will further increase. Based on traditional double winding additional control on power transformer winding, and the injection of compensation current, thus to restrain of load harmonic current generated in the side, in order to ensure the grid side current is not influenced by it. When the harmonic current detection, this paper based on the instantaneous reactive power IP-IQ current test; When the compensation current control, this paper adopts triangle wave control method. At last, through the Matlab modeling and simulation of the scheme, the results show that the method has good inhibition effect on main harmonic. Keywords: Harmonic suppression; active filter; IP - IQ test current; Triangle wave comparison control method; The matlab simulation |
