harmonic measure 中文意思是什麼
harmonic measure
解釋
低測度-
Monitor apparatus can measure valid value of three phase voltage and current, power factor, three phase disequilibrium, instant flecker of short time and harmonic without twenty, degree and harmonic distortion total. the paper are laid on the following. ( 1 ) master plan and function of circuit, ( 2 ) hardware design including circuit and principle of a / d conversion, phase lock, liquid crystal display and keystroke and so on, ( 3 ) design of system software including digital filtering, fft, a / d conversion and monitor interface of pc, ( 4 ) system test
監測儀能夠完成包括三相電壓、三相電流的有效值、功率因數、三相不平衡、電壓短期閃變、以及20次內的諧波、諧波相位、諧波失真總量等的測量。論文重點介紹了以下幾部分： （ 1 ）電路的總體設計和功能； （ 2 ）硬體設計，包括a d轉換、鎖相環、液晶顯示和按鍵輸入等原理和電路。 （ 3 ）系統軟體設計，包括a d轉換、 fft 、數字濾波等程序的原理和演算法以及上位機監控界面的設計； （ 4 ）系統測試。 -
It is discussed that the present harmonic analyzers do n ' t satisfy the requirements of china standard for harmonic measure of quick disturbance harmonic load. the measurement error brought about by the harmonic analyzers adopting ft or fft algorithm is analyzed. a cycle discrete fourier algorithm that should n ' t be effected by aperiodic component is presented, and the results of simulation show that it has higher accureacy
本文對電力系統諧波的測量方法，數據處理及電力牽引負荷對電力系統的影響進行了研究，論述了目前國內外生產的諧波分析儀用於快速波動諧波負荷的測量不滿足國標的要求，分析了諧波分析儀普遍採用的ft或fft演算法所產生的測量誤差，提出了一種不受非周期分量影響的全周波離散傅里葉演算法，模擬結果表明精度好。 -
Therefore, the power department and users are concerned aboui harmonic and reactive compensation. the power department usually manage compute and measure the electric net " s harmonic condition and connected or new - connected harmonic load. and need to measure the harmonic vol tage current in some electric net " point. then, by manual making an in - depth analysis and statistics on measured - data, it can reduce harmonic harm on public not to take some effective measures
電力部門通常在實際中，需要對電網的諧波狀況、已接入和新接入系統的諧波源負荷進行管理、計算及測量，需要對電力網路各點的諧波電壓、電流實際水平進行測試，然後對測試數據進行人工分析統計，並以此採取相應措施降低或減少諧波對電網的危害。 -
Harmonic maps between riemannian manifolds are very important in both differential geometry and mathematical physics. riemannian manifold and finsler manifold are metric measure space, so we can study harmonic map between finsler manifolds by the theory of harmonic map on general metric measure space, it will be hard to study harmonic map between finsler manifolds by tensor analysis and it will be no distinctions between the theory of harmonic map on finsler manifold and that of metric measure space. harmonic map between riemannian manifold also can be viewed as the harmonic map between tangent bundles of source manifold and target manifold
黎曼流形間的調和映射是微分幾何和數學物理的重要內容。黎曼流形和finsler流形都是度量空間，自然可利用一般度量空間調和映射的理論討論finsler流形間的調和映射。但由於控制finsler流形性質的各種張量一般情況下很難應用到一般度量空間調和映射的理論中，使得這樣的討論大都是形式上的，並與一般度量空間調和映射的理論區別不大。 -
Absolute harmonic measure zero
絕對調和測度零 -
In order to supervise the system status and restrain harmonic disturbance, accurate harmonic measure has become a pivotal problem
為了監測系統狀態、抑制諧波干擾，對其進行準確測量成為一個關鍵性的問題。 -
Moreover a example makes know, it can calculate lesser even harmonics exactly. especially it is more obvious to improve the pricision for calculating their phases. the paper designs a data gather circuit aimed at the require of power system harmonic measure
文中給出了計算實例，實例表明該演算法具有很高的計算精度，即使對于幅值較小的偶次諧波也能準確地求出其各項參數，尤其是對于提高相位計算的精度更為明顯。 -
This paper describes mainly system functions, measuring methods, circuit design, software program and errors analysis of a new type of measuring instrument. this instrument can measure and monitor electric parameters in single - phase circuits, three - phase ( three - wire or four - wire ) circuits. this system can be applied to electric devices and power plants, transformer substations with harmonic pollution. it can measure current, voltage, power, energy, frequence, power factor etc. it also can detect load quality, phase sequence, alarm, display and print results, as well as detect and dispose negative power
該儀器適用於含有諧波污染情況下的機電設備現場、發電廠、供電局、企業變電所現場，可用來測量電流、電壓、有功功率、無功功率、視在功率、有功電能、無功電能、視在電能以及頻率和功率因數等電參數，並具有負載性質（感性、容性）判別，正、逆相序判別指示功能；超限報警功能；列印記錄功能和負功檢測及處理功能。 -
Accurate measure circuit for harmonic current of low voltage devices
低壓電器諧波電流精密測量電路 -
It uses quasi - synchronous sampling method to measure electrical ac parameters and analyze harmonic. it can measure parameters of several ac circuits, display and carry on remote communication
採用準同步采樣演算法進行電參量測量及諧波分析，可實現對多個迴路進行測量、顯示、遠傳。 -
This thesis analyses the present situation of energy metering in bishan network and some network at home, main factors which lead to inaccuracy of energy metering are dissected and the severity degree are pointed out. the method of enhancing accuracy of metering using modern technique are put forward which including : 1 ) modernization of meter, replacing the induction watthour meter with full electronic watthour meter ; 2 ) put real time change of mutual inductor ratio of transformation into consideration, method on real - time computation are presented. 3 ) using full electronic watthour meter to measure fundamental power and harmonic power separately and discussing idea of billing on harmonic
這些方法包括： 1 ）計量儀表的現代改造，用全電子式電能表代換感應式電能表； 2 ）計及互感器變比的實時變化，對互感器的變比進行實時模擬計算，並提出了實時計算的方法； 3 ）用全電子式電能表對基波電能與諧波電能分別計量，並討論了對諧波電能計費的觀點。 -
The main results include : ( 1 ) ecological economy and landscape ecology are merged and applied in sustainable development evaluation of beijing mountainous region. the landscape measure of regional sustainable development is to build a model landscape with reasonable structure, efficient function and harmonic relationship of ecological system
主要取得的研究結果： （ 1 ）提出了生態經濟理論與景觀生態理論相結合進行北京山區可持續發展評價，區域可持續發展的景觀途徑就是將人類活動對于景觀演化的影響導入良性循環，建立一種由結構合理、功能高效、關系協調的生態系統組成的模式景觀，以實現區域可持續發展。 -
Secondly, the modification function and resonance produced by running power capacitor increased the harmonic at the same time, which worsen the operation environment of itself. it is very important to analyze the reason of harmonic and conduct the valid measure to restrain its affect and guarantee the safely operation of power network. the author has present the point in this paper, based on the operation characteristic of modern power system, the author described the production and development of network harmonic with the consideration on the same kind of problem
本文以現代電力網路的運行特點為基礎，結合近年來對所涉及的同類問題的思考，對系統諧波的產生、發展的一般規律進行較為全面的理論闡述；以大量事故案例分析諧波所帶來的危害和影響；通過實地測試和對所得數據的分析研究，推導出一種應用matlab的fft的諧波分析方法，給出了該方法的程序流程框圖及結果界面顯示；在此基礎上進一步探討了利用現代通信網路建立電網諧波網路管理分析系統的總體構想和功能。 -
On the base of it, a piece of data collection special chip with a core of fft is designed with vhdl ( vhsic hardware description language ) in the way of top down system design method, which can finish harmonic analysis and measure the voltage, current, frequency and power of the electric power system
在此基礎上，使用標準的硬體描述語言vhdl設計出一個fft變換內核，並以該內核為核心、採取自上而下的系統設計方法完成了一個電力系統數據採集專用晶元的設計，實現對電力系統的電壓、電流、頻率、有功和無功功率等參數的測量以及各次諧波分析。 -
The capability of power systems to bear disturbance loads is determined by the background harmonic voltage directly, so it is necessary to measure and study background harmonics in different power systems comprehensively
由於其直接決定電網承受畸變負荷的能力，所以有必要對各種電網的背景諧波狀況作全面了解和測量。 -
In this paper, a method to measure background harmonic voltages is proposed on the basis of users harmonic current characteristics, and magnification of background harmonic voltages in small power supply networks is analyzed preliminarily
本文提出一種根據用戶諧波特徵進行背景諧波電壓測量的方法，並對一些小電網背景諧波電壓放大現象進行初步分析。 -
Studies the shield and anti - jamming techniques and designs the shield shell. designs the transmit microcircuit adapts to the far distance transmission. using the passive high - precision current transformer founds a method to measure dielectric loss based on fft which can eliminate effects of harmonic and current frequency excursion and conducts an experiment
利用所研製的高精度無源單匝穿心式小電流互感器，建立了一種基於fft的介質損耗測量方法，它可以有效地消除諧波和工頻信號波形不工整的影響，並進行了實驗驗證。 -
The method of quasi - synchronous sampling is used to measuring electrical parameters and analyzing harmonic. it can also measure parameters of several ac circuits, display and carry out remote communication
採用準同步采樣演算法進行電參量測量及諧波分析，可實現對多個迴路進行測量、顯示、遠傳。 -
In order to improve the electric power supply quality, a measure device is needed to analyse the distrubtion of the harmonic pollution in the power supply system
因此有必要對電網中的諧波含量及非線性用電設備可能產生的諧波畸變進行檢測，掌握諧波的產生和分佈情況，以便採取措施抑制諧波危害，提高供電質量。 -
Secondary, this paper expatiates on the harmonic generation, harmonic harm, harmonic analysis and the hardware for measuring harmonics, analyzes and discusses the method applied to measure harmonics
其次，本文概述了諧波的產生、諧波的危害、諧波的分析及諧波測量的硬體實現，對應用於諧波測量的方法進行了分析和評述。
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