E - ehv 中文

ehv EHV ＝extra high voltage 【電學】...

eib
Along with the development of power system , more and more generators and ehv transmission systems are put into operation . there come many new situations , such as the lengthening transmission distance , the heavier load , the increasing transient elements during the transient process . these new conditions influence the correct working of relay protections 隨著電力系統的不斷發展，大容量發電機組和超高壓輸電系統的相繼投入運行，系統中出現了許多新的情況，如輸電距離增大、負荷加重、故障暫態過程中的暫態分量大大增加、持續時間變長等，這些情況對目前常用的各種繼電保護方法的正確動作會產生許多不利的影響，甚至不能正常運行。
The operation characteristic of the new relay is analyzed in theory and verified by the simulation tests . the new relay operates with clear selectivity and high operation speed and can satisfy the demand of the protection for the ehv transmission line . the performance of the fault component impedance relay has been improved and the misoperaion of the healthy phase under cross - country fault and close - in fault have been avoided 理論分析及仿真計算表明，基于自適應補償的突變量距離繼電器有很好的選擇性和速動性，完全能夠滿足高壓線路保護的需要，顯著提高了突變量距離的性能，解決了其在大電源出口單相故障以及正反向復故障可能會誤跳三相的缺點。
Upon existent theoretical and experimental results and based on a great of laboratory investigations carried out in chongqing university , for the first time this paper studies systematically the insulators dc discharge performance and flashover mechanism of iced insulators in the complex atmospheric environment , which will contribute to the understanding of flashover phenomena observed on ice surface at low air pressure and provide the test and theoretical reference for hv and ehv transmission lines design and safety service 為此，在國內外現有工作的基礎上，通過大量的試驗研究，本文主要研究了復雜環境中絕緣子的直流閃絡特性及閃絡機理。其結果有助于進一步了解低氣壓下覆冰絕緣子的閃絡現象，并可為輸電線路的設計和安全運行提供理論依據。
Based on former productive conditions , the corporation depends on the support of all circles , introduced an international advanced 500kv ehv crosslinking line from germany , so the productive scale of producing ehv cable of our corporation reaches the domestic largest and with the highest technical level ; at the same time , introduced international advanced production and testing equipment of digital cable and data cable line , able to produce cable of 1 million km , and 5 , 6 , and 7 digital cable of 50 thousand km , which set a base for the quick development of the enterprise , here i sincerely express our thanks to all circles for your great supports 集團在原有生產條件的基礎上，依靠社會各界的支持，又從德國引進了一條國際先進水平的500kv超高壓交聯電纜生產線，使漢纜集團超高壓電纜的生產規模達到國內最大技術水平最高同時，又引進了國際先進水平的光纜數據纜生產及檢測設備，可生產100萬芯公里光纜5萬公里5 6 7類數據纜，為企業的快速發展奠定了基礎。在此，我由衷地感謝社會各界朋友的鼎立支持。
For the unthermal effect of the magnetic field caused by the ehv transmission line , the intensity of the magnetic field has entered the range of the dangerous window . but it is needed to continue to study in future to understand the effect of the magnetic field to human exactly 但對于輸電線所產生的工頻磁場所產生的非熱效應，在現有的輸電線下，人體內產生的磁場在數量級上已進入了有害的窗口范圍內，但對于人類健康的具體影響，還需要進一步的深入研究。
The paper summarizes the method to calculate the emf near the power transmission line by analytic method , calculates the distribution of the emf in human body and the energy absorbed by human under the ehv power transmission line using a mix of numerical and analytic method 總結了現有的解析法計算輸電線周圍電磁場的方法，采用一種解析法和有限元法相結合的計算方法，利用ansys電磁場分析軟件計算了超高壓輸電線下人體內電磁場的分布和人體吸收的能量。
In order to avoid the ehv system disaster caused by reclosing on the permanent fault of transmission line , adaptive autoreclosure based on microprocessor - based protection arises at the historic moment , but is still in the stage of theory study 為了避免超高壓輸電線路采用自動重合閘時重合于永久性故障所造成系統穩定破壞等重大系統災難，在微機保護的基礎上，自適應重合閘應運而生，但尚處于理論探索階段。
In order to compensate for the capacitive charging power of transmission lines , control reactive power flow , stabilize operating voltage and restrict arc current , the shunt reactors are usually installed on ehv transmission lines , especially for uhv transmission lines 摘要超、特高壓輸電線路為了補償線路的容性充電功率，控制無功潮流，穩定網絡運行電壓，限制潛供電流等，一般要安裝并聯電抗器。
According to the environmental and medical reports , associating to th e safety criteria and test results , comparing with the calculating results , the paper studies the relation between the ehv transmission line and human health 根據環境和醫學方面的研究報告，結合相應的安全標準和實驗結果，對照計算結果，分析了超高壓輸電線與人類健康的關系。
With the rapid development of the power cause , the voltage degree of the power transmission increases continually , the extra - high voltage ( ehv ) and ultra - high voltage ( uhv ) transmission lines appear in succession 隨著電力事業的快速發展，輸電電壓的等級不斷提高，相繼出現超高壓和特高壓輸電線路。
The reliability of hv / ehv transmission line protection is important to the security of the power system . this thesis is devoted in the study of the transient current protection for hv / ehv transmission line 探索新的保護原理和方法，以提高輸電線路保護的性能，是繼電保護研究領域中的一個重要課題。
This paper studies the safety of the biological effect of the ehv effect by calculating the emf distribution in human body , and gets some theoretical and actual conclusions 本文通過計算人體內電磁場分布的方法，研究了超高壓輸電線生物效應的安全性，得出一些具有理論和實際意義的結論。
It is the conclusion that the heat absorbed by human body is too small to cause the thermal hurt to human under the present ehv transmission line in our country 研究表明，在我國現有的超高壓輸電線路下，人體所吸收的能量很小，因此從熱效應方面看不足以對人造成傷害。
The iced insulators flashover is one of the main faults of the ehv transmission lines in icing regions . icing is especial form of pollution 對覆冰地區的超高壓線路，絕緣子覆冰引起的閃絡已經成為最主要的故障之一，對電力系統的安全運行造成了極大的威脅。
Recently , people pay more and more attention to the biological effect of the electromagnetic field ( emf ) caused by the ehv transmission line to the health of human 近來，超高壓輸電線產生的工頻電磁場的生物效應對人類健康的影響愈來愈引起人們的重視。
Fp55k ii ehv system is the improved products produced by our company on the basis of the original fp55k ehv system combined with the introducion of the advanced technology 超高壓系統系是我公司在原fp55k高壓基礎上獨家引進國外先進技術的改良產品。
The paper studies the relation between the ehv transmission line and the human health by calculating method based on the present research achievements 本文通過理論計算的方法，在總結現有研究成果基礎上，研究了超高壓輸電線與人類健康的關系。
Along with the development of ehv power transmission and transformation , serious defects of traditional electromagnetic induction - type current transformer emerge 隨著超高壓輸變電的發展，傳統電磁感應式電流互感器暴露出嚴重的缺點。
Studying the emf distribution in human body is helpful to know the right relation between the ehv transmission line and the human health 研究超高壓輸電線下人體內電磁場的分布，有助于正確認識超高壓輸電線與人體健康的關系。

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ehv

ehv EHV ＝extra high voltage 【電學】...

eib

Recently , people pay more and more attention to the biological effect of the electromagnetic field ( emf ) caused by the ehv transmission line to the health of human 近來，超高壓輸電線產生的工頻電磁場的生物效應對人類健康的影響愈來愈引起人們的重視。

Fp55k ii ehv system is the improved products produced by our company on the basis of the original fp55k ehv system combined with the introducion of the advanced technology 超高壓系統系是我公司在原fp55k高壓基礎上獨家引進國外先進技術的改良產品。

The paper studies the relation between the ehv transmission line and the human health by calculating method based on the present research achievements 本文通過理論計算的方法，在總結現有研究成果基礎上，研究了超高壓輸電線與人類健康的關系。

Along with the development of ehv power transmission and transformation , serious defects of traditional electromagnetic induction - type current transformer emerge 隨著超高壓輸變電的發展，傳統電磁感應式電流互感器暴露出嚴重的缺點。

Studying the emf distribution in human body is helpful to know the right relation between the ehv transmission line and the human health 研究超高壓輸電線下人體內電磁場的分布，有助于正確認識超高壓輸電線與人體健康的關系。