1) The overvoltages of resonance
断线谐振过电压
1.
The overvoltages of resonance at line break are calculated and studied.
针对我省第一条500kV郓城-泰山紧凑型(部分同塔双回)输电工程设计,对该线路断线谐振过电压进行分析计算研究,提出必要的限制措施和运行方式要求。
2) resonant overvoltage
谐振过电压
1.
In the light of the analysis of the resonant overvoltage ,the causes of resonant overvoltage are found out ,and the methods to solve the problems are put forward,to ensure the safety and reliable operation of the power System.
通过对谐振过电压的分析,找出了谐振过电压的原因,提出了解决问题的方法,保证了电力系统的安全可靠运行。
2.
The RTDS was used to analyze and calculate the resonant overvoltage occurred during start-up debugging of 500 kV Ganshan-shuangsi double-circuit lines on the same tower,and the hidden troubles in various operational modes are studied.
应用实时数字仿真系统(RTDS)对500 kV阚山—双泗同塔双回线路启动调试中发生的异常谐振过电压进行了全面细致的仿真计算研究,列举了各种工况的仿真结果,对谐振原理进行了分析,对实际运行系统可能出现的各种运行方式所存在的安全隐患作了分析研究,提出了切合实际和可行的运行方案及建议。
3) resonance overvoltage
谐振过电压
1.
With the understanding of the generation of the resonant overvoltage and ferromagnetic resonance overvoltage limit,lightning arrester and the HXB arc-resonance extinguishing overvoltage protection installment are proposed to use.
了解谐振过电压的产生与对铁磁谐振过电压限制,建议采用避雷器与HXB型消弧及消谐过电压保护装置。
2.
As for the 1000kV AC pilot project in China, it is possible to appear resonance overvoltage with higher amplitude caused by energizing no-load transformers.
研究了我国1000kV特高压试验示范工程中可能出现幅值较高的合空载变压器谐振过电压现象,阐述了合空载变压器谐振过电压的机理与影响因素及其对策。
4) resonant over-voltage
谐振过电压
1.
This paper, from the technological perspective, analyzes the causes of displacement over-voltage of neutral points, break-line over-voltage, iron magnetic resonant over-voltage & arc over-voltage, and proposes more than two technical solutions to these problems.
本文首先从技术角度分析中性点位移过电压、断线过电压、铁磁谐振过电压和弧光过电压产生的原因 ,然后提出两种解决以上问题的技术措施 。
2.
Based on the parameters of the circuit composed of single-phase, three-phase inductors and capacitors, the resonant conditions when both serial and shunt constructed were analyzed, and the reason why the resonant over-voltage occurred in 6 kV system was proposed, along with its prevention and dealing methods.
基于单相及三相电感、电容组成的线路参数,分析了串联及并联时的谐振条件,得出6kV系统谐振过电压产生的原因。
5) overvoltage of harmonic resonance
谐波谐振过电压
6) ferroresonance overvoltage
铁磁谐振过电压
1.
This paper analyzes the generation mechanism of ferroresonance overvoltage in low and medium voltage electrical network, and probes into the advantages and disadvantages of currently adopted elimination measures.
分析了中低压电网铁磁谐振过电压的发生机理,探讨了目前采用的消谐措施的优缺点。
2.
So, it has great significance to research ferroresonance overvoltage.
相对于中性点非直接接地系统而言,发生在中性点直接接地系统中的铁磁谐振过电压有着许多新的特点,而且对它的研究相对较少。
3.
In recent years, the problems in traction power supply system, such as ferroresonance overvoltage, overvoltage of the split phase, the rail voltage raise and the integrated earth wire etc.
近几年,我国高速重载铁路牵引供电系统出现了铁磁谐振过电压、分相过电压、钢轨电位升高和综合贯通地线等问题,这些问题理论研究还不够深入,在工程上还没有得到很好地解决,它们随时威胁着电气设备绝缘、通信信号设备稳定和牵引供电系统和机车(动车)的安全,研究这些过电压的形成机理和防护方法对促进我国高速重载铁路的发展具有重要的意义。
补充资料：电力系统断线谐振过电压
电力系统断线谐振过电压
resonance overvoltage due to broken lines in electric power system
d一onl一xjtong duonx旧nx一ezhen guod一onyo电力系统断线谐振过电压(resonanceovervoltage due to broken lines in eleetrie Powersystem)电力系统中由于导线断落而激发起来的铁磁谐振过电压。图中所示为中性点不接地系统中单相断线和一侧导线落地所形成的典型谐振回路，其中云.、云b和云。为电源变压器的对称电动势，LK为空载变压器的励磁电感，C。和C12为导线的对地和相间电容。按照载维南定理，可将此图等效变换为最简单的申联电路，图中:一1·5:·，:一:。鲁，e一e。+Ze:2。两相断线时亦可变换为类似的等效电路。由于L为铁芯电感，故在不同C值(即不同导线长度)下可能发生高颇、工频和分频铁磁谐振，并在断线处和负载变压器端部产生铁磁谐振过电压。在工频谐振时，主回路呈现容性，亡。与电源电动势反相，负荷变压器三相电压的相序会与断线前相反，称为相序翻转。此时负载变压器二次侧如接有小容盘的电动机，将会发生反转。但当负载变压器二次侧的有功负荷较大时，其等效电阻可以吸收足够的振荡能量而使谐振强度受到抑制。了毛竺工不了飞乙K厂喜几.爵酷一十斗二阿、{牲一兰坚卜 相断线接线图及其等效电阻 断线谐振亦可在消弧线圈补偿电力系统和110~22okV的中性点有效接地的电力系统中产生，后者是由于部分负载变压器的中性点不接地而形成断线谐振回路。 断线谐振过电压引起的绝缘损坏在配电网中较常发生，引起配电变压器绝缘闪络和避雷器损坏等.实验表明，断线后的工频谐振往往具有自激性质，为此可在空载变压器的高压或低压侧投人一定大小的相间电容，以使自激谐振转化为他激性质，然后投人瞬间吸能装置加以抑制。最好的防止措施是加强线路维护，避免发生断线。此外，一旦发生断线，则尽快切除负载变压器，以缩短谐振的持续时间。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条