TW201350870A - Power quality analyzer system - Google Patents
Power quality analyzer system Download PDFInfo
- Publication number
- TW201350870A TW201350870A TW101121375A TW101121375A TW201350870A TW 201350870 A TW201350870 A TW 201350870A TW 101121375 A TW101121375 A TW 101121375A TW 101121375 A TW101121375 A TW 101121375A TW 201350870 A TW201350870 A TW 201350870A
- Authority
- TW
- Taiwan
- Prior art keywords
- power quality
- power
- cloud computing
- quality analyzer
- current
- Prior art date
Links
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
Description
本發明係有關於一種「電力品質分析儀系統」，尤指一種採用雲端運算架構，將部分繁重的電力品質分析運算集中於一中央監控之雲端運算伺服器中心之電力品質分析儀系統者。 The present invention relates to a "power quality analyzer system", and more particularly to a power quality analyzer system that uses a cloud computing architecture to concentrate part of the heavy power quality analysis operations on a centrally monitored cloud computing server center.
隨著能源短缺、環境與天候惡化等種種因素，加速了人類對地球環保意識的關注，當中最重要的議題之一，便是節約能源的概念，而智慧電網(Smart Grid)即是當前世界各國專心致力發展的重大建設。2011年年初美國總統歐巴馬提出了美國經濟振興方案及節能措施，其中提及要將全美四千萬個家庭安裝智慧型電錶，因此許多報章雜誌就直接以智慧電網來稱呼這個方案。然而，該計畫所指的乃是先進讀表基礎建設(Advanced Metering Infrastructure,AMI)，以電網建設來說，這是目前技術可以實現的方案。但是在四月的美國能源部提案中，智慧電網是他們的目標，因為繼先進讀表基礎建設之後，直接的後續建設便是智慧電網。由此可知，先進讀表基礎建設的系統建置是智慧電網的基礎關鍵技術。 With the shortage of energy, the environment and the deterioration of the weather, the human body's awareness of the environmental awareness of the earth has been accelerated. One of the most important issues is the concept of energy conservation, and the Smart Grid is the current world. A major construction dedicated to development. In early 2011, US President Obama proposed the US economic revitalization plan and energy-saving measures, which mentioned that 40 million households in the United States should install smart meters. Therefore, many newspapers and magazines directly refer to this plan as a smart grid. However, the plan refers to the Advanced Metering Infrastructure (AMI), which is a technology-achievable solution for power grid construction. However, in the US Department of Energy proposal in April, the smart grid is their goal, because after the advanced meter reading infrastructure, the direct follow-up construction is the smart grid. It can be seen that the system construction of advanced meter reading infrastructure is the key technology of smart grid.
根據美國能源局的智慧電網介紹，五項關鍵技術之一的感測與量測技術，更是達成電網現代化的重要因素，先進的感測與量 測技術藉由擷取與轉換電力訊號成為有用的智能資訊，提供了多種電力系統的管理與操作策略。這樣多角度檢視電網的偵測技術，將有助於系統管理人員評估設備的健全程度，以及電力網路系統的完整性。此外，藉由連續的感測讀表結果，將提供用電戶不同的選擇與需量反應，透過此等新形態的控制策略將有助於舒緩能源使用上的爭逐與壅塞，以及減少過多能源的浪費。 According to the US Energy Agency's smart grid introduction, sensing and measurement technology, one of the five key technologies, is an important factor in achieving grid modernization, advanced sensing and quantity. Measurement technology provides a variety of power system management and operational strategies by capturing and converting power signals into useful intelligent information. This multi-angle view of the grid's detection technology will help system administrators assess the health of the equipment and the integrity of the power grid system. In addition, by continuously sensing the results of the meter reading, it will provide different choices and demand responses for the electricity users. Through these new forms of control strategies, it will help to ease the competition and congestion in energy use, and reduce excessive Waste of energy.
發展先進讀表基礎建設是促成電網現代化最基礎的第一步，先進讀表基礎建設並非是單一的技術，而是多項技術整合的成果，其提供了電力使用者端與系統業者與運轉操作端的智能連結，為智慧電網的主要建構主幹。先進讀表基礎建設能提供電力使用者所需的資訊，以進行智慧型控制決策，而系統業者與運轉操作端便能依據先進讀表基礎建設所得的資料，大幅地改善對電力使用者的服務，以及進行系統設備資產的維修與管理。透過整合多項技術(1.智慧電表、2.廣域通訊公共工程技術、3.區域網絡技術、4.儀表資訊管理系統與5.電力操作閘道溝通技術)，先進讀表基礎建設建立了電力網路、使用者及其負載、發電與儲電、輸配電等資源的溝通橋樑，此等連結架構為電網現代化的基本需求之一。 The development of advanced meter reading infrastructure is the first step to promote the modernization of power grids. The advanced meter reading infrastructure is not a single technology, but the result of a number of technological integrations, which provide power users and system operators and operational operators. Smart links are the main backbone of the smart grid. The advanced meter reading infrastructure can provide the information needed by power users to make intelligent control decisions, while the system operators and operational operators can greatly improve the service to power users based on the information obtained from the advanced meter reading infrastructure. And repair and management of system equipment assets. Through the integration of a number of technologies (1. Smart meter, 2. Wide area communication public engineering technology, 3. Regional network technology, 4. Instrument information management system and 5. Power operation gateway communication technology), the advanced meter reading infrastructure has established a power network. The communication bridge between the road, the user and its load, power generation and storage, transmission and distribution, etc., is one of the basic requirements for the modernization of the power grid.
在五項的先進讀表基礎建設技術中，智慧電表則為當中最重要的實體建構，缺少該項的發展，電力網路的智慧化將無法實現。 傳統的電機械式電表只能視為電費收取的記錄設備，在住宅等級的傳統式電表更是僅紀錄一段時間的總能量消耗而已，一般而言皆為期一個月。而智慧電表則是一種可程式的裝置，提供了諸多功能，包含：(1)時基電價(time-based pricing)、(2)電力使用者與供電業者的能量消耗資料、(3)能量淨值表、(4)遠端設備開關操作功能、(5)負載用電限制或需量響應、(6)電能預付機制、(7)電力品質監測、(8)盜用電力偵測、(9)與其他家用智慧型設備通訊等。此外，智慧電表亦是一個綠色電表，因為其能提供需量響應來管制碳的排放量。而由於智慧電表回傳的資訊能促使用戶端減少電力的使用量，便能大幅地促進能源的使用效率。 Among the five advanced meter reading infrastructure technologies, smart meters are constructed for the most important entities. Without the development of this project, the wisdom of the power network will not be realized. Traditional electromechanical electric meters can only be regarded as recording equipment for electricity charges. Traditional electric meters in residential grades only record the total energy consumption for a period of time, generally for one month. The smart meter is a programmable device that provides many functions, including: (1) time-based pricing, (2) energy consumption data for power users and power suppliers, and (3) net energy value. Table, (4) remote device switch operation function, (5) load power limit or demand response, (6) power prepayment mechanism, (7) power quality monitoring, (8) stolen power detection, (9) and Other home smart device communication, etc. In addition, the smart meter is also a green meter because it provides a demand response to regulate carbon emissions. And because the information returned by the smart meter can prompt the user to reduce the amount of power used, it can greatly promote the efficiency of energy use.
在眾多智慧電表的功能中，電力品質監測是最為困難與繁雜的技術，由於電力品質干擾訊號種類繁多，分析電力品質干擾的儀表便具有不同的設計規範。目前世界各國大多採用國際電氣協會(International Electrotechnical Commission，IEC)所訂定的規範，用以評估該分析儀表的準確度與可信度，舉例來說，諧波/間諧波的分析便要遵守IEC 61000-4-7的要求，其中還考量了電力系統頻率偏移的效果；電壓擾動(閃爍)現象的評估便透過IEC 61000-4-15的規範，設計出閃爍分析儀來測定；而關於電壓驟降/驟升與電力中斷事件分析，便規範於IEC 61000-4-30標準中。因此如何整合諸項電力品質分析裝置於一智慧電表中，實為一項重 要的研究議題。 Among the functions of many smart meters, power quality monitoring is the most difficult and complicated technology. Due to the wide variety of power quality interference signals, instruments that analyze power quality interference have different design specifications. At present, most countries in the world use the specifications set by the International Electrotechnical Commission (IEC) to evaluate the accuracy and reliability of the analytical instrument. For example, harmonic/interharmonic analysis must be observed. The requirements of IEC 61000-4-7, which also consider the effect of power system frequency offset; the evaluation of voltage disturbance (flicker) phenomenon is designed by the flicker analyzer through the specification of IEC 61000-4-15; Analysis of voltage dips/swells and power interruption events is regulated in the IEC 61000-4-30 standard. Therefore, how to integrate various power quality analysis devices into a smart meter is a serious The research topic to be.
此外，由於電力品質分析的運算量過大，實行測量的儀表往往亟需高效能的運算處理器，加以為了擷取電力系統高電壓高電流訊號，感測電路亦需花費人力與精神進行精確地設計，以保護後端運算的處理單元晶片，因此電力品質分析儀表的價格通常無法降低。 In addition, because the calculation of power quality analysis is too large, the instruments that perform measurement often need high-performance arithmetic processors. In order to extract high-voltage and high-current signals from the power system, the sensing circuits also need to be designed with human and mental precision. In order to protect the processing unit chip of the back-end operation, the price of the power quality analysis instrument cannot usually be lowered.
為了施行智慧電網的基礎建置，電表的廣域佈設實為強化電力網路安全性的必要措施，透過衛星定位系統的同步，可以將各電表所擷取之電力智能定時地回傳中央監控管理系統，亦由於各電力資料已經有精確的定時系統輔助，系統操作者便能即時地遍覽系統全貌，擁有更有效率的管理機制與策略的擬定。然而現今廣域電表佈設的實行困難之處，主要取決於智慧電表的成本過高，因而國內外研究紛紛傾向於電表位置與數量之最佳化決策，藉以降低整體廣域監測的建置成本。因此，如能有效地降低電力品質分析儀表的設計成本，將可對現存電力網絡系統進行更加全面的即時監測，以提升電力系統安全性與穩定性。 In order to implement the basic construction of the smart grid, the wide-area layout of the meter is a necessary measure to strengthen the security of the power network. Through the synchronization of the satellite positioning system, the power collected by each meter can be intelligently and periodically transmitted back to the central monitoring and management system. Moreover, since each power data has been assisted by a precise timing system, the system operator can instantly view the whole system and have more efficient management mechanisms and strategies. However, the difficulty in the implementation of wide-area meter deployment today depends mainly on the high cost of smart meters. Therefore, domestic and foreign research tends to optimize the position and quantity of meters, so as to reduce the cost of overall wide-area monitoring. Therefore, if the design cost of the power quality analysis instrument can be effectively reduced, more comprehensive real-time monitoring of the existing power network system can be performed to improve the safety and stability of the power system.
故本發明人即有鑑於此，乃思及創作的意念，遂以多年的經驗加以設計，經多方探討並試作樣品試驗，及多次修正改良，乃推出本發明。 Therefore, the present inventors have invented the present invention in view of the fact that the idea of creation and creation has been designed with many years of experience, and has been explored and tested by various parties, and has been repeatedly modified and improved.
現今廣域電表佈設的實行困難之處，主要取決於智慧電表的成本過高，此乃欲解決之技術問題點者。 The difficulty in implementing the wide-area meter layout today depends mainly on the high cost of the smart meter, which is the technical problem to be solved.
本發明之電力品質分析儀系統，係採用雲端運算架構，將部分繁重的電力品質分析運算集中於一中央監控之雲端運算伺服器中心，儀表端便僅需處理簡易的電力量評估，如此不但能減輕現場電力品質量測儀表之計算負擔，亦能同時間將各觀測點之電力品質訊號集中管控，藉此觀察系統的即時狀態全貌，又該雲端運算伺服器中心與各電力品質量測儀表間係透過網際網路進行連接，電力品質量測儀表則採用最普遍大眾化的微控制器ARM為處理核心，並且設計一交流電壓電流測量電路，來提供足夠的電力參數資料以供雲端運算伺服器中心計算電力品質參數資料，該交流電壓電流測量電路中之電壓、電流等類比訊號係先經過PT比壓器與CT比流器等霍爾元件轉換後，經由隔離保護後端運算電路之用的前級降壓限流電路，再分別從A/D輸入通道至嵌入式系統內，藉由內部的A/D轉換引擎轉成10位元的數位訊號，並且儲存在嵌入式系統內記憶體中等待讀取；藉此，係能構成該電力品質分析儀系統者。 The power quality analyzer system of the present invention adopts a cloud computing architecture to concentrate part of the heavy power quality analysis operation on a centrally monitored cloud computing server center, and the instrument side only needs to handle simple power quantity evaluation, so that not only can To reduce the computational burden of on-site power quality measurement instruments, it is also possible to centrally control the power quality signals of each observation point at the same time, thereby observing the overall state of the system, and between the cloud computing server center and each power quality measuring instrument. The system is connected through the Internet, and the power quality measuring instrument adopts the most popular microcontroller ARM as the processing core, and designs an AC voltage and current measuring circuit to provide sufficient power parameter data for the cloud computing server center. Calculate the power quality parameter data. The analog signal such as voltage and current in the AC voltage and current measurement circuit is converted by the Hall element such as the PT comparator and the CT current comparator, and then protected by the back-end operation circuit. The step-down current limiting circuit is separately from the A/D input channel to the embedded system. The internal A/D conversion engine converts into a 10-bit digital signal and stores it in the embedded system memory for reading; thereby, it can constitute the power quality analyzer system.
(一)本發明之電力品質分析儀系統，其利用雲端運算的處理 結構，以中央運算之雲端運算伺服器中心的集中運算及管理方式，降低各個分散式電力品質量測儀表對運算微處理器之性能需求，除了能強化各監測地點的資料彙整外，亦能大幅地降低分散式電力品質量測儀表的設置成本，有利於發展一套準確、低成本、多功能及符合IEC規範的電力品質監測儀表，以促進電力品質監測與節約能源等相關領域之發展。 (1) The power quality analyzer system of the present invention, which utilizes cloud computing processing The structure, with the central computing and management of the cloud computing server center of the central computing, reduces the performance requirements of the computing power of each decentralized power quality measuring instrument, in addition to strengthening the data collection of each monitoring location, The reduction of the installation cost of decentralized power quality measuring instruments is conducive to the development of an accurate, low-cost, multi-functional and IEC-compliant power quality monitoring instrument to promote the development of power quality monitoring and energy conservation.
(二)本發明之電力品質分析儀系統，其電力品質分析儀系統，無論在硬體訊號擷取精確度與運算之準確度皆需符合IEC規範，因此即使將將大部分繁重的計算工作透過雲端運算集中於雲端運算伺服器中心，亦能獲得高精確度之品質分析結果者。 (2) The power quality analyzer system of the present invention, the power quality analyzer system, regardless of the accuracy of the hardware signal acquisition and the accuracy of the calculation, is required to comply with the IEC standard, so even most of the heavy calculation work will be transmitted through Cloud computing is concentrated in the cloud computing server center, and can also obtain high-accuracy quality analysis results.
為使 貴審查委員對本發明之目的、特徵及功效能夠有更進一步之瞭解與認識，以下茲請配合【圖式簡單說明】詳述如后： In order to enable your review committee to have a better understanding and understanding of the purpose, features and effects of the present invention, please refer to the following [Simplified Description of the Drawings] for details:
通常根據本發明，請由第一圖及第二圖所示觀之，本發明之電力品質分析儀系統，係採用雲端運算架構，將部分繁重的電力品質分析運算集中於一中央監控之雲端運算伺服器中心(10)，儀表端便僅需處理簡易的電力量評估，如此不但能減輕現場電力品質量測儀表(20)之計算負擔，亦能同時間將各觀測點之電力品質訊號集中管控，藉此觀察系統的即時狀態全貌，又該雲端運算伺服器中心(10)與各電力品質量測儀表(20)間係透過網際網路 (Internet)(30)進行連接，電力品質量測儀表(20)則採用最普遍大眾化的微控制器ARM為處理核心，並且設計一交流電壓電流測量電路(21)，來提供足夠的電力參數資料以供雲端運算伺服器中心(10)計算電力品質參數資料，該交流電壓電流測量電路(21)中之電壓、電流等類比訊號係先經過PT比壓器(22)與CT比流器(23)等霍爾元件轉換後，經由隔離保護後端運算電路之用的前級降壓限流電路(24)，再分別從A/D輸入通道(25)至嵌入式系統內，藉由內部的A/D轉換引擎轉成10位元的數位訊號，並且儲存在嵌入式系統內記憶體中等待讀取。 Generally, according to the present invention, as shown in the first figure and the second figure, the power quality analyzer system of the present invention adopts a cloud computing architecture to concentrate part of the heavy power quality analysis operation on a central monitoring cloud computing operation. At the server center (10), the instrument side only needs to handle simple power quantity evaluation, which not only reduces the calculation burden of the on-site power quality measuring instrument (20), but also centrally controls the power quality signals of each observation point at the same time. In order to observe the real-time state of the system, the cloud computing server center (10) and each power quality measuring instrument (20) are connected to the Internet. (Internet) (30) for connection, the power quality measuring instrument (20) uses the most popular mass microcontroller ARM as the processing core, and designs an AC voltage and current measuring circuit (21) to provide sufficient power parameter data. The power quality parameter data is calculated by the cloud computing server center (10), and the analog signals such as voltage and current in the AC voltage current measuring circuit (21) pass through the PT comparator (22) and the CT current comparator (23). After the Hall element is converted, the front-stage buck current limiting circuit (24) for protecting the back-end arithmetic circuit is isolated from the A/D input channel (25) into the embedded system, respectively, by internal The A/D conversion engine converts the 10-bit digital signal and stores it in the embedded system memory for reading.
藉由上述發明之電力品質分析儀系統，由於習知常用之商用量測儀表多以儀表本身機體來進行分析計算，因此其各項電力品質訊號分析極易影響整體儀表之效能，設計者常常為了完成多功能之分析儀表，而採用較高等級的運算處理器，造成儀表成本上的負擔，且針對現行學術界與商用電力品質儀表之研究成果可知，大多採用DSP或FPGA來實現，其原因不外乎電力品質干擾種類繁多，分析方式各異，因而儀表對於各種電力品質之分析往往依據國際規範而各有設計，是故才會有諧波/間諧波的分析便要遵守IEC 61000-4-7、電壓擾動(閃爍)現象的評估便透過IEC 61000-4-15的規範、以及電壓驟降/驟升與電力中斷事件分析，便規範於IEC 61000-4-30標準中等要求，然而各種電力品質問題皆 有可能同時出現，因此多功能之整合型電力品質儀表便成為設計主流，擔負如此大量運算的電力儀表，亟需處理效能較高之運算單元，因而設計成本較高；而本發明採用雲端運算架構，將部分繁重的電力品質分析運算集中於一中央監控之雲端運算伺服器中心(10)，儀表端便僅需處理簡易的電力量評估，如此不但能減輕現場電力品質量測儀表(20)之計算負擔，更能將現址電力品質量測儀表(20)的成本降至最低，及本發明所設計之電力品質分析儀系統，無論在硬體訊號擷取精確度與運算之準確度皆需符合IEC規範，因此即使將將大部分繁重的計算工作透過雲端運算集中於雲端運算伺服器中心(10)，亦能獲得高精確度之品質分析結果者。 According to the power quality analyzer system of the above invention, since the commonly used commercial measuring instruments are mostly analyzed and calculated by the body of the meter itself, the analysis of various power quality signals easily affects the performance of the overall meter, and the designer often Completing the multi-function analysis instrument, and adopting a higher-level arithmetic processor, which causes the burden on the instrument cost, and the research results of the current academic and commercial power quality instruments are mostly realized by DSP or FPGA. The reason is not There are many kinds of power quality interferences, and the analysis methods are different. Therefore, the analysis of various power quality of instruments is often designed according to international norms. Therefore, the analysis of harmonics/interharmonics must comply with IEC 61000-4. -7. The evaluation of the voltage disturbance (flicker) phenomenon is regulated by the IEC 61000-4-15 specification, as well as the voltage dip/swell and power interruption event analysis, and is regulated to the medium requirements of the IEC 61000-4-30 standard. Power quality problems It is possible to appear at the same time, so the multi-functional integrated power quality meter has become the mainstream of design, and the power meter with such a large number of calculations needs to deal with the higher performance arithmetic unit, so the design cost is high; and the present invention adopts the cloud computing architecture. Focusing on some heavy power quality analysis operations in a centrally monitored cloud computing server center (10), the instrument side only needs to handle simple power quantity assessment, which can not only reduce the on-site power quality measurement instrument (20). Calculating the burden, the cost of the current power quality measuring instrument (20) can be minimized, and the power quality analyzer system designed by the present invention needs to be accurate in the accuracy and accuracy of the hardware signal acquisition. It conforms to the IEC standard, so even if most of the heavy computational work is concentrated in the cloud computing server center (10) through cloud computing, high-accuracy quality analysis results can be obtained.
唯以上所述者，僅為本發明之一較佳實施例而已，當不能以之限定本發明實施之範圍；即大凡依本發明申請專利範圍所作之均等變化與修飾，皆應仍屬本創作專利涵蓋之範圍內。 The above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; that is, the equal variation and modification of the scope of the patent application of the present invention should still belong to the present creation. Within the scope of the patent.
(10)‧‧‧雲端運算伺服器中心 (10) ‧‧‧Cloud Computing Server Center
(20)‧‧‧電力品質量測儀表 (20) ‧‧‧Power quality measuring instruments
(21)‧‧‧交流電壓電流測量電路 (21)‧‧‧AC voltage and current measuring circuit
(22)‧‧‧PT比壓器 (22) ‧‧‧PT Comparator
(23)‧‧‧CT比流器 (23) ‧‧‧CT comparator
(24)‧‧‧前級降壓限流電路 (24) ‧‧‧Pre-stage buck current limiting circuit
(25)‧‧‧A/D輸入通道 (25)‧‧‧A/D input channel
(30)‧‧‧網際網路 (30)‧‧‧ Internet
第一圖：係本發明之電力品質分析雲端運算設計架構圖。 The first figure is a diagram of the cloud computing design architecture of the power quality analysis of the present invention.
第二圖：係本發明嵌入式低成本電力品質量測儀表硬體架構圖。 The second figure is a hardware architecture diagram of the embedded low-cost power quality measuring instrument of the present invention.
(10)‧‧‧雲端運算伺服器中心 (10) ‧‧‧Cloud Computing Server Center
(20)‧‧‧電力品質量測儀表 (20) ‧‧‧Power quality measuring instruments
(30)‧‧‧網際網路 (30)‧‧‧ Internet
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101121375A TWI461710B (en) | 2012-06-14 | 2012-06-14 | Power Quality Analyzer System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101121375A TWI461710B (en) | 2012-06-14 | 2012-06-14 | Power Quality Analyzer System |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201350870A true TW201350870A (en) | 2013-12-16 |
| TWI461710B TWI461710B (en) | 2014-11-21 |
Family
ID=50157971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101121375A TWI461710B (en) | 2012-06-14 | 2012-06-14 | Power Quality Analyzer System |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI461710B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823144A (en) * | 2014-03-14 | 2014-05-28 | 云南电力试验研究院（集团）有限公司电力研究院 | High-voltage shunt power capacitor operational monitoring system and method |
| CN103837777A (en) * | 2014-03-18 | 2014-06-04 | 深圳市康必达中创科技有限公司 | Method and system for power quality assessment of power supply system |
| CN105137231A (en) * | 2015-08-25 | 2015-12-09 | 李忠 | Power quality monitoring method and system |
| CN106872823A (en) * | 2017-02-13 | 2017-06-20 | 云南电网有限责任公司电力科学研究院 | A kind of electricity quality evaluation method based on dynamic area cloud atlas |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM391231U (en) * | 2010-06-07 | 2010-10-21 | Huan-Cheng Lian | Far-end safety monitoring device integrating electric power network and internet |
| TW201206114A (en) * | 2010-07-16 | 2012-02-01 | Ind Tech Res Inst | Method and system for monitoring residential appliances |
| TWM432289U (en) * | 2011-11-11 | 2012-07-01 | Tech & Science Inst Northern Taiwan | Ventilation safety cap |
-
2012
- 2012-06-14 TW TW101121375A patent/TWI461710B/en not_active IP Right Cessation
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823144A (en) * | 2014-03-14 | 2014-05-28 | 云南电力试验研究院（集团）有限公司电力研究院 | High-voltage shunt power capacitor operational monitoring system and method |
| CN103823144B (en) * | 2014-03-14 | 2017-05-17 | 云南电力试验研究院（集团）有限公司电力研究院 | High-voltage shunt power capacitor operational monitoring system and method |
| CN103837777A (en) * | 2014-03-18 | 2014-06-04 | 深圳市康必达中创科技有限公司 | Method and system for power quality assessment of power supply system |
| CN103837777B (en) * | 2014-03-18 | 2016-11-23 | 深圳市康必达中创科技有限公司 | Electric power system electricity quality evaluation method and system |
| CN105137231A (en) * | 2015-08-25 | 2015-12-09 | 李忠 | Power quality monitoring method and system |
| CN105137231B (en) * | 2015-08-25 | 2018-01-12 | 李忠 | A kind of electric energy quality monitoring method and system |
| CN106872823A (en) * | 2017-02-13 | 2017-06-20 | 云南电网有限责任公司电力科学研究院 | A kind of electricity quality evaluation method based on dynamic area cloud atlas |
| CN106872823B (en) * | 2017-02-13 | 2020-04-10 | 云南电网有限责任公司电力科学研究院 | Power quality assessment method based on dynamic regional cloud picture |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI461710B (en) | 2014-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1316256C (en) | Electric network geomagnetic induction current monitoring method and apparatus | |
| CN202870226U (en) | Electric energy quality analyzer | |
| CN102761173B (en) | Intelligent electric meter with functions of leakage remote monitoring and protection | |
| CN104267374B (en) | Metering device on-line checking and status assessing system | |
| CN201218822Y (en) | Electric energy quality on-line monitoring device | |
| CN106291030B (en) | A kind of distribution network metering guard system | |
| CN103135019A (en) | Power quality monitoring management system based on electric power wide-area network | |
| CN202210151U (en) | System for remote checking and monitoring for electric energy metering device | |
| CN201352233Y (en) | Three-phase multifunctional electric energy meter with power carrier communication | |
| CN102013731B (en) | Energy consumption management method | |
| CN103885438B (en) | The Auto-Test System of a kind of transformer station measuring and controlling equipment and method | |
| CN104267373A (en) | Gateway meter assessment device | |
| CN105182250B (en) | A kind of non-intrusion type distributed power source output monitoring device | |
| TWI461710B (en) | Power Quality Analyzer System | |
| CN102944712A (en) | Multi-range automatic selection device of electronic type current transformer | |
| CN103176066A (en) | Digitization power quality monitoring device | |
| WO2014043839A1 (en) | Distributed power generation dispersed state monitoring device | |
| CN203929882U (en) | Distributed power source access user bidirectional measuring and monitoring system | |
| CN205539204U (en) | Frequency conversion earth impedance measuring apparatu | |
| CN105866576A (en) | Simulation detection system of intelligent transformer station secondary-side electric energy metering error influence, and detection analysis method | |
| CN203164360U (en) | Transformer device insulation online monitoring system | |
| CN102608423B (en) | Detection method of harmonic energy | |
| CN202886434U (en) | Civil metering ammeter electricity theft and leakage monitoring system | |
| CN104655926A (en) | Embedded terminal capable of monitoring electricity utilization information and electric charge data and monitoring method thereof | |
| CN208255327U (en) | Multichannel power quality analysis device based on 3G network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |