power system problems 中文意思是什麼
power system problems
解釋
不斷電電源供給-
This article has studied the deficiency and shortcoming of various kinds of methods of the parameter measurement of transmission line at present, proposed the measurement under operation on the basis of gps, researched gps application way and error that may appear in the power system synchronal sampling, put forward the parameter computing technology based on the information of both sides of transmission line, which solved some problems that exist in the parameter measurement, especially the problem that exist in the zero - sequence parameter measurement of transmission line with mutual inductance
本文研究了目前輸電線路參數測量的各種方法，分析了其中存在的不足和缺點，提出了基於gps的輸電線路參數在線測量方法，研究分析了gps在電力系統同步采樣中的應用方式以及可能出現的誤差，在同步采樣的基礎上提出了基於雙端信息的線路參數計算方法，較好地解決了輸電線路參數測量中存在的一些問題，尤其是多回互感線路零序參數測量困難的問題。 -
The problem about neutral - point - grounding mode is an all - around technical problem which associated with not only power system reliability ， insulation coordination ， electromagnetic interference ， but assault safety 。 in china ， the neutral grounding modes of the 10kv net involved of none grounding, grounding by arc suppressing coils, resistance grounding or reactance grounding in the past 。 with the development of civic power network ， low resistance grounding mode was used to restrain the over voltage, particularly in guangzhou, shanghai ， beijing ， and zhuhai etc. it was reported that the over - voltage level of low resistance grounding mode is lower than that of arc suppressing coil mode, but the operation carried out the other way 。 at substations in guangzhou and shanghai it was found that the low resistance grounding mode is successful 。 but in some areas ， such as zhuhai ， substations grounding with low resistance revealed some problems ， including power supply reliability rapidly dropping ， transmitting line often tripping ； and person safety being threatened 。 so interiorly the grounding mode selection of the 10kv network was disputed, which mainly focused on the fault form of 10kv net grounding, the apply area of suppressing arcing coil grounding mode, power supply reliability level of the two modes, person safety, communication interfere and the workload of maintenance
爭議點主要是在10kv電網接地故障的形式、消弧線圈接地的應用范圍、兩種運行方式供電可靠性的高低、人身安全、通訊干擾和運行維護工作量等諸多方面。 11 17本論文就是針對以電纜為主的城區10kv電網中性點接地方式的選擇問題進行研究。論文首先對10kv電網的中性點運行各種方式進行分析，比較各方式的特點，然後以重慶儲奇門變電站10kv電網的實際參數來建立數值計算模型，在考慮了電網接地電容電流變化、中性點電阻取值大小、接地點接地電阻值變化等多種影響因素的情況下，對中性點經消弧線圈接地和經小電阻接地方式下電網的過電壓水平和接地點短路電流大小進行了數值計算，其計算結果與電科院所作現場試驗進行了比較。 -
The fuel cells existent problems and the background of this thesis are summarized in the first chapter. the necessity of development fuel cell generation technology in china ' s power system is verified, and technical line for developing fuel cell generation is put forward
本文首先概述了燃料電池發電技術現狀及存在的問題，論證在我國電力系統發展燃料電池發電技術的必要性，並提出發展燃料電池發電技術的技術路線。 -
With significant development of power construction, the scale of power system is becoming much bigger and the structure more complicated, which leads to more difficult calculation and analysis concerned with power system. and the current software was limited by past development environment, resulting in a series of problems such as unfriendly man - machine interfaces, inconvenience of data inputting and management and not - easy - grasp using method
隨著電力建設的發展，電力系統的規模越來越大，結構也越來越復雜，電力系統計算分析的工作量也日趨龐大，而現有的計算軟體由於受當時的開發環境所限，普遍存在著人機界面不友好、數據錄入及管理不方便、使用方法不易掌握等缺點。 -
Abstract : the paper presents the study on problems of self - excitation ， over - voltage ， frequency and voltage stability ， organizational measures and arrangement in the course of black start and restoration of the system. through simulation of black start on east china power system ， above problems are analyzed and solved ， it shows that working out strict black start scheme may not only speed up system restoration ， reduce outage losses ， but also have important significance to emergency release or power system islanding
文摘:研究電力系統黑啟動的過程及恢復中存在的自勵磁、過電壓、頻率和電壓穩定、組織措施及安排等問題，並通過華東系統黑啟動模擬對上述問題進行分析和解決，證明制定嚴格的黑啟動計劃不僅可以迅速恢復系統、降低事故損失，而且對處理緊急狀態或地區性解裂有重要意義。 -
Hv - tsc is an important and typical component of svc. its application in power systems provides an effective means for the safety and economic operation of the system. hv - tsc can also provide a good solution to voltage and power quality problems
高壓tsc裝置是指額定工作電壓為6kv 35kv可控硅投切電容器補償裝置，其是一種典型靜止無功補償器，其對增強系統穩定性、提高系統運行經濟性，保證電壓質量及改善電能質量都能發揮良好的作用。 -
Although the past distributed technology can solve these problems to some degree, it is not able to satisfy the operation and control of modern power system
以往的分散式技術雖然能夠在一定程度上解決這些問題，但是很難適應電力系統運行與控制的要求。 -
Power system problems
電源系統問題 -
On the other hand, the wavelet arithmetic can be realized through dsp, so it is widely used in the power system analysis. first, the paper introduces the standard about power quality and classifies the power quality variation problems
本文首先簡單介紹了電能質量的標準和電能質量變化問題的分類，在總結了各種的電能質量分析方法的基礎上，提出了新的電能質量分析方法? ?小波分析。 -
A powerful tool of dynamical system analysis named normal form method is presented in this dissertation, and then it was used to analyze oscillation phenomena in interconnected power grids. using nonlinear coordinate transformation of normal forms, a fully described power system can be converted to an equivalent reduced order model, which can still use the conventional modal analysis of small signal stability problems
論文將動力系統非線性分析的正規形理論應用於互聯系統低頻振蕩分析中，利用正規形方法的非線性坐標變換，將高階電力系統轉化為等價的低階系統，在保留非線性信息的同時，使其仍然可以使用常規小信號穩定研究的模式分析方法。 -
This article mainly discusses such problems as the content of construction statement for temporary power supply on construction site, structure and power supply system, method of calculating capacity and load of power system, selection of cable and wires, together with basic requirement for security measures of temporary power supply
摘要闡述了建築工程施工現場臨時用電組織設計編制的內容，供配電系統的結構和設置、基本保護系統，系統中容量和負荷計算方法、電線電纜選擇，以及臨時用電氣防護措施的基本要求。 -
Firstly, the paper introduced the commonly hardware configure of microcomputer relaying and the function of every module of industry controlling computer std90386. secondly, the paper introduced several types busbarprotection which was commonly installed on electric power system and the characteristic of mv or lv system with low current grounding. based on it, the paper put forwards the theory of percentage - restraint differential relay. after that, in the discussing every problems of the relaying working the paper put the emphasis on the negative effect of the ct saturation and countermeasure
本文首先介紹了微機保護裝置的一般硬體配置以及作為裝置硬體平臺的std90386工控機各組件模板的功能，然後分析了目前電網系統裝設的母線保護的各種類型以及中、低壓小電流接地電網的特點，在此基礎上分析、介紹了作為本保護動作原理的「比率制動式差動保護」原理。 -
In order to overcome these problems, the prony method based on angle measurement technology is used. it " s ability to estimate the frequency, damping and strength of modal components would be quite valuable to power system research. 2
據此研究使用prony方法直接分析測量信號、提取特徵振蕩模式的方法，並結合前後兩種方法分析兩者之間的聯系，從理論上分析了prony方法的有效性。 -
Such problems as the attenuation of dc elements and sine waveform, voltage sag and frequency deviation should be taken into account in order to analyze the transient process in the power system
要分析電網的暫態特性，還必須考慮衰減直流分量和衰減正弦波，以及電壓缺口和頻率偏移等問題。 -
So the emergence of facts is just for the purpose of solving these problems of power system. as a branch of facts, active power filter ( apf ), a new power and electric equipment, its function is to eliminate load harmonic and compensate system line reactive power, damp system surge of node voltage, decrease power waste of system line
作為facts的一個重要分支- - - -有源濾波器（ apf ） ，是為了解決系統線路無功功率因數過低以及負載線路諧波過多，從而出現線路損耗大、電源電壓的瞬態波動過陡等一系列相關問題而產生的一種新型電力電子裝置。 -
In order to analyse reasonedly the reason of the failure in the power system, we have to master existent reasons, calculating methods and controlling techniques about the many kinds of power quality problems
評估干擾負荷（非線性、沖擊性和不對稱性負荷等）對公用電網電能質量的影響。 -
By means of the reduced correction equation, the propose algorithm can efficiently handle a huge number of functional inequality constraints for large scale optimization problems in power system ; 3
藉助于簡約修正方程，能夠有效地處理大量的不等約束問題，因此，特別適合於大規模的電力系統問題； 3 -
Multiple model adaptive control ( mmac ) is an effective approach to resolve complicated problems such as nonlinear ， uncertainties and operating points variations etc. in this paper, the ideal is applied to power system
多模型自適應控制是解決非線性、變工況、參數不確定性等復雜問題的一種有效方法。本文主要將多模型思想應用在熱工過程中。 -
In recent years, hamonic suppression and reactive power compensation are the requirement of green - electrical power system and green - power electrnics. so an ever increasing attention has been focused on the active power filter ( apf ) to solve the hamonic and reactive power problems
抑制諧波和補償無功功率是「綠色電網」 、 「綠色電力電子技術」的要求，應運而生的有源電力慮波器成為人們的關注焦點和研究熱點。 -
In this paper, research status of moa resistive leakage current on - line monitoring is introduced, different monitoring methods are analyzed and influencing factors of monitoring are presented, such as influence of power system ' s harmonic voltages, inter - phase interference, sampling methods on resistive leakage current of moa. in addition, some of these problems are studied deeply
本文介紹了目前moa阻性電流在線監測的研究現狀；詳細分析了各種阻性電流在線監測方法的優缺點；提出影響moa阻性電流監測的因素和問題，如諧波電壓對阻性電流監測的影響，相間干擾對阻性電流監測的影響，全電流的取樣方法對阻性監測的影響，並且針對其中的一些問題作了詳細的研究。
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