2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC)最新文献_第2页

Differential protection for medium voltage pulse transformers 中压脉冲变压器差动保护

2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC) Pub Date : 2014-11-20 DOI: 10.1109/PCICON.2014.6961882

L. Sevov, S. Kennedy, R. Paes, P. Ostojic

{"title":"Differential protection for medium voltage pulse transformers","authors":"L. Sevov, S. Kennedy, R. Paes, P. Ostojic","doi":"10.1109/PCICON.2014.6961882","DOIUrl":"https://doi.org/10.1109/PCICON.2014.6961882","url":null,"abstract":"The current differential protection is the most popular protection for conventional type transformers, providing good fault sensitivity, selectivity and security. This protection however is not commonly used for transformers with non-standard phase shifts, and more specifically for multi-pulse transformers. The main reason for this is not necessarily the cost of protection, but mostly the inability of many transformer differential protective relays, to compensate non-standard phase shifts without adding specially connected interposing CTs for external phase compensation. This paper presents a new economic way of directly applying differential protection, without the need of interposing CTs.Applying differential protection to protect conventional type power transformers with “standard” phase shifts (multiples of 30° deg.), is relatively simple. However, applying this protection for transformers with non-standard phase shifts requires more thoughts for the protection engineer. This includes a selection of protective device to support such applications, whether or not interposing CTs would be needed, relay connections, computation of winding currents, phase angles per winding and whether or not the windings have grounding with the zone of protection. The paper provides essential knowledge on applying transformer differential protection for medium voltage MV pulse transformer connected to AC drives. Current transformers and relay connections, as well as computation of current differential settings for transformers with standard and non-standard phase shift are covered. The paper is supported by Real Time Digital Simulation (RTDS) tests showing the fault detection sensitivity, dependability and security of the protection.","PeriodicalId":264800,"journal":{"name":"2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129867742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Adjustable speed drives and motor protection 调速驱动和电机保护

2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC) Pub Date : 2014-11-20 DOI: 10.1109/PCICON.2014.6961875

Raymund J. Torres, Amir Hagphanah, Tryton Bower, R. Delay, R. Paes

引用次数: 6

Electrical obsolescence management: How to spend $1B efficiently 电器报废管理:如何有效使用10亿美元

2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC) Pub Date : 2014-11-20 DOI: 10.1109/PCICON.2014.6961897

R. Pragale, A. Bakhsh, A. Patel, Neil Apps

引用次数: 1

Disaster recovery: What to do after the storm 灾难恢复:风暴过后该怎么做

2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC) Pub Date : 2014-11-20 DOI: 10.1109/PCICON.2014.6961914

Chuuck Yung, J. Bryan

引用次数: 0

Long cable applications from a medium voltage drives perspective 从中压驱动的角度来看，长电缆应用

2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC) Pub Date : 2014-11-20 DOI: 10.1109/PCICON.2014.6961917

Matt Smochek, Tony Pollice, M. Rastogi, M. Harshman

引用次数: 2

Conduit seals in hazardous locations - An ongoing safety issue the past and the future 导管密封在危险地点-一个持续的安全问题，过去和未来

2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC) Pub Date : 2014-11-20 DOI: 10.1109/PCICON.2014.6961913

N. Leblanc, W. Berner, P. Ogilvie

{"title":"Conduit seals in hazardous locations - An ongoing safety issue the past and the future","authors":"N. Leblanc, W. Berner, P. Ogilvie","doi":"10.1109/PCICON.2014.6961913","DOIUrl":"https://doi.org/10.1109/PCICON.2014.6961913","url":null,"abstract":"The use of electrical conduit seals to prevent the release of an explosion from an explosion proof enclosure and to minimize the passage of flammable vapor and gas migration to an ignition source is as prevalent today as it was yesterday in the petrochemical industry. With the harmonization of international standards, and recent equipment advancements, options are available to reduce the use of conduit seals for a more reliable, safe, and maintainable installation. The harmonization of the standards is reviewed, specifically on International Electrotechnical Commission (IEC), National Electrical Code (NEC) and Canadian Electrical Code (CEC) requirements for equipment in hazardous locations. Electrical conduit seal condition data from a 30 year old petrochemical facility is provided, to illustrate that the threat of gas migration at a facility is real. The collection of this data was achieved by applying new devices allowing the removal of the conduit seals. An overview of this application and how it was achieved is provided. The outlook on the future development with equipment rated for hazardous locations to reduce conduit seal requirements is explored.","PeriodicalId":264800,"journal":{"name":"2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122514287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Transforming partial discharge data in volts and coulombs for six high-voltage motors 对6台高压电机局部放电数据进行伏特和库仑转换

2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC) Pub Date : 2014-11-20 DOI: 10.1109/PCICON.2014.6961919

A. Vouk, G. Stone, R. Carlson

{"title":"Transforming partial discharge data in volts and coulombs for six high-voltage motors","authors":"A. Vouk, G. Stone, R. Carlson","doi":"10.1109/PCICON.2014.6961919","DOIUrl":"https://doi.org/10.1109/PCICON.2014.6961919","url":null,"abstract":"It has recently been demonstrated from a limited database of large motors that there is a consistent relationship between Partial Discharge (PD) measurements recorded in Volts to PD measurements recorded in Coulombs [6]. This relationship has been expressed in a transformation factor called the F-factor (the ratio of PD measured in volts to PD measured in Coulombs) which was characterized from PD data taken in the field under a variety of operating conditions. Because past effort was limited to two motor designs, this paper has extended the work to include the PD data from four additional designs. The motor database also includes machine physical data for six different winding designs ranging in size from 7,000 HP to 21,000 HP, induction and synchronous, with windings manufactured from 1980 to 2002. This paper looks at two ways to relate the F-factor to motor design. The first utilizes the machine physical parameters to calculate the surge impedance of each motor design, and the second explores a simpler method of predicting F-factor based on core and winding data. The calculated surge impedances could not be satisfactorily correlated to the empirically derived F-factors, but a simple and robust correlation derived from core and winding data is demonstrated. The F-factor can be used to determine if the insulation margin of the machine being tested is substantially different from modern practice by comparing it to simple core volume.","PeriodicalId":264800,"journal":{"name":"2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115596072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Arc flash considering generator decrement curves 考虑发电机衰减曲线的电弧闪光

2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC) Pub Date : 2014-11-20 DOI: 10.1109/PCICON.2014.6961893

L. Grainger, Duane Leschert, A. Bennett, Kent Zehr

引用次数: 0

Oil field retrofit of ESPs to Meet Harmonic Compliance 油田改造电潜泵以满足谐波要求

2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC) Pub Date : 2014-11-20 DOI: 10.1109/PCICON.2014.6961898

Marek Farbis, A. Hoevenaars, John L. Greenwald

{"title":"Oil field retrofit of ESPs to Meet Harmonic Compliance","authors":"Marek Farbis, A. Hoevenaars, John L. Greenwald","doi":"10.1109/PCICON.2014.6961898","DOIUrl":"https://doi.org/10.1109/PCICON.2014.6961898","url":null,"abstract":"A large Petrochemical company installed nearly 50,000 HP of electrical submersible pumps (ESP's) at an existing midwest USA oil field. Being equipped with Adjustable Speed Drives (ASD's) these ESP's introduced high levels of current harmonic distortion which resulted in 14%-19% voltage harmonic distortion at the Electrical Utility supply. Initially, the Utility noticed the low power factor (PF) and had the Oil company pay for the installation of power factor correction (PFC) capacitors on their medium voltage (MV) supply. Once installed, the Utility began to have problems with these capacitors and continued to receive complaints from other customers adjacent to the oil field so they enforced harmonic limits, as defined by IEEE Std 519, at all points of common coupling. Measurements were made with a harmonic analyzer at several locations throughout the electrical system to quantify harmonics and determine the effect the ESP's were having on the Utility distribution system. Computer simulations were performed to analyze different methods of harmonic mitigation. Ultimately, passive harmonic filters were installed on all ESP's in phases. In addition, the PFC capacitors were permanently disconnected after determining that a power system resonance condition existed. Once all phases of the project were complete, the voltage distortion level decreased to below 5% and power factor improved to near unity without the PFC capacitors. This article will describe the effect of harmonics on the electrical distribution system caused by ASD's, practical solutions to excessive voltage harmonic distortion, resonance issues with PFC capacitors and the challenges associated with different methods of harmonic mitigation.","PeriodicalId":264800,"journal":{"name":"2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123319723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Pre-emptive arc fault detection techniques in switchgear-part III, from the laboratory to practical installation 开关设备先发制人的电弧故障检测技术——第三部分，从实验室到实际安装

2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC) Pub Date : 2014-11-20 DOI: 10.1109/PCICON.2014.6961905

G. Hussain, M. Shafiq, J. Kay, M. Lehtonen

{"title":"Pre-emptive arc fault detection techniques in switchgear-part III, from the laboratory to practical installation","authors":"G. Hussain, M. Shafiq, J. Kay, M. Lehtonen","doi":"10.1109/PCICON.2014.6961905","DOIUrl":"https://doi.org/10.1109/PCICON.2014.6961905","url":null,"abstract":"Major types of slowly developing faults, which can lead to arc faults in switchgear and control gear, such as partial discharge (PD), arcing and heating due to poor connections, can now be successfully detected and monitored. In part I and II of this paper series, a detailed review of the immediate causes of arc faults, along with an overview of pre-ignition and post-ignition methods for its mitigation were presented. Various hybrid non-intrusive sensors were developed in the laboratory to implement pre-ignition detection techniques. The major types of slowly developing electrical faults were created in the laboratory and the sensors were employed to evaluate their performance along with an effective signal processing technique. Part III of the work is based on the successful performance of the sensors outside of laboratory conditions. Hybrid sensors have been installed in a real world application, i.e. switchgear located in substations. This paper presents interesting results about this practical application, and includes valuable discussion on the performance evaluation of different sensors, which further justifies the usefulness of the new sensors for online condition monitoring of switchgear, controlgear and cable termination boxes. The implementation of this technology in industry may provide promising results in avoiding major accidents such as arc flash in switchgear and controlgear.","PeriodicalId":264800,"journal":{"name":"2014 IEEE Petroleum and Chemical Industry Technical Conference (PCIC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116783872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2