DL/T 357-2019 English PDFUS$629.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. DL/T 357-2019: Specification for transmission line fault location equipment based on traveling wave Status: Valid DL/T 357: Historical versions
Basic dataStandard ID: DL/T 357-2019 (DL/T357-2019)Description (Translated English): Specification for transmission line fault location equipment based on traveling wave Sector / Industry: Electricity & Power Industry Standard (Recommended) Classification of Chinese Standard: K47 Word Count Estimation: 25,212 Date of Issue: 2019-06-04 Date of Implementation: 2019-10-01 Older Standard (superseded by this standard): DL/T 357-2010 Regulation (derived from): Natural Resources Department Announcement No. 7 of 2019 Issuing agency(ies): National Energy Administration DL/T 357-2019: Specification for transmission line fault location equipment based on traveling wave---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Specification for transmission line fault location equipment based on traveling wave ICS 29.240 K 45 People's Republic of China Electric Power Industry Standard Replace DL/T 357-2010 Technical requirements of traveling wave fault location device for transmission line 2019-06-04 released 2019-10-01 implementation Issued by National Energy Administration Table of contentsForeword...II 1 Scope...1 2 Normative references...1 3 Terms and definitions...2 4 Technical requirements...3 4.1 Environmental conditions...3 4.2 Appearance, structure and other requirements...4 4.3 Main functions of traveling wave fault location device...4 4.4 Basic parameters of traveling wave fault location device...5 4.5 Insulation performance...7 4.6 Power supply requirements...8 4.7 Heat and humidity resistance...8 4.8 EMC immunity performance requirements...8 4.9 Continuous power-on...9 4.10 Mechanical properties...9 4.11 Technical parameters and conditions to be provided by the user...10 5 Performance test of traveling wave fault location device...10 5.1 Test conditions...10 5.2 Test instruments and meters...11 5.3 Structural and visual inspection...11 5.4 Technical ability test...11 5.5 Power consumption test...11 5.6 Overload capacity test...11 5.7 Climate environment test...11 5.8 Insulation test...12 5.9 Electromagnetic compatibility immunity performance test...12 5.10 Power adaptability test...13 5.11 Mechanical performance test...13 5.12 Communication and protocol conformance test...13 6 Inspection Rules...13 6.1 Inspection classification...13 6.2 Factory inspection...13 6.3 Type test...13 6.4 On-site inspection...15 7 Marking, packaging, transportation and storage...15 7.1 Logo...15 7.2 Packaging...15 7.3 Transport...16 7.4 Storage...16 Appendix A...17 Appendix B...19ForewordThis standard is compiled in accordance with the rules given in GB/T 1.1-2009. This standard replaces DL/T 357-2010 "Technical Conditions of Travelling Wave Fault Location Devices for Transmission Lines", and compared with DL/T 357-2010, except In addition to editorial changes, the main technical changes are as follows. Updated some definitions in Chapter 3 of the standard; Updated standard normative reference documents; Delete the definition of "ranging system" in the original 3.8; In standard 4.1.4, the storage environment temperature is -25℃～55℃; Deleted the original section 4.2.3; Modify the content of 4.3 "Functional Requirements for Traveling Wave Ranging Device"; In standard 4.3, DL/T 860 communication protocol requirements have been added; In standard 4.3.9, the device alarm requirements are expanded; Added section 4.3.12 "Network Security Protection Function Requirements"; Modify the requirements for "time error" in section 4.4.7; Modified section 4.4.8 "Ranging Error"; In standard 4.8, the electromagnetic compatibility part is updated; In standard 4.8, test items such as pulse magnetic field and damped oscillation magnetic field immunity are added. This standard was proposed by the China Electricity Council. This standard is under the jurisdiction of the Power Industry Relay Protection Standardization Technical Committee. The main drafting organizations of this standard. China Electric Power Engineering Co., Ltd., China Electric Power Research Institute Co., Ltd., China Southern Power Grid Power Dispatching Control Center, North China Electric Power Design Institute Co., Ltd., Zhongnan Electric Power Design Institute Co., Ltd., State Grid Liaoning Electric Power Co., Ltd., Shandong Kehui Power Automation Co., Ltd., Nanjing Nanrui Relay Electric Co., Ltd., Beijing Sifang Relay Automation Co., Ltd. The main drafters of this standard. Guo Ningming, Du Xiangnan, Xu Yong, Qin Jian, Shi Zebing, Zhang Daonong, Zhang Qiaoling, Jia Songjiang, Yang Fei, Chang Chunguang, Li Feng, Chen Yulin, Du Zhaoqiang. The previous releases of the standards replaced by this standard are. DL/T 357-2010. The opinions or suggestions during the implementation of this standard are fed back to the Standardization Management Center of China Electricity Council (Baiguang, Xicheng District, Beijing) Lu Er Tiao No. 1, 100761). Technical requirements of traveling wave fault location device for transmission line1 ScopeThis standard specifies the basic technical requirements, test methods, inspection rules and benchmarking of traveling wave fault location devices for transmission lines Requirements for logging, packaging, transportation and storage. This standard applies to AC and DC transmission line fault location devices based on traveling wave principles (hereinafter referred to as traveling wave fault detection devices). Distance device) design, manufacture, inspection and use.2 Normative referencesThe following documents are indispensable for the application of this document. For dated reference documents, only the dated version is suitable Used in this document. For undated references, the latest version (including all amendments) is applicable to this standard. GB/T 2887-2011 General Specification for Computer Site GB/T 2900.1-2008 Basic terminology for electrical engineering GB/T 2900.17-2009 Electrotechnical terminology measuring relay GB/T 7261-2016 Basic test methods for relay protection and safety automatic devices GB/T 7267-2015 Power system secondary circuit protection and automation cabinet (screen) basic size series GB/T 9361-2011 Computer site safety requirements GB/T 11287-2000 Electrical Relay Part 21.Measuring the vibration, shock and impact of relays and protection devices Collision and Seismic Test Part 1.Vibration Test (Sine) (IEC 60255-21-1.1988, IDT) GB/T 14537-1993 Impact and collision test of measuring relays and protection devices (IEC 60255-21-2.1988, IDT) GB/T 14598.24-2017 Measuring Relays and Protection Devices Part 24.Power System Transient Data Exchange (COMTRADE) Common format GB/T 14598.26-2015 Measuring Relays and Protection Devices Part 26.Electromagnetic Compatibility Requirements GB/T 14598.27-2017 Measuring Relays and Protection Devices Part 27.Product Safety Requirements GB/T 17626.9-2011 electromagnetic compatibility test and measurement technology pulse magnetic field immunity test GB/T 17626.10-2017 Electromagnetic compatibility test and measurement technology Damped oscillation magnetic field immunity test GB 17859-1999 Classification criteria for security protection grades of computer information systems GB/T 22239-2008 Information Security Technology Information System Security Level Protection Basic Requirements GB/T 32890-2016 Relay Protection IEC 61850 Engineering Application Model DL/T 478-2013 General technical requirements for relay protection and safety automatic devices DL/T 630-1997 AC sampling remote control terminal technical conditions DL/T 860 (all parts) Substation communication network and system DL/T 1146-2009 DL/T 860 Implementation technical regulations3 Terms and definitionsThe following terms and definitions defined in GB/T 2900.1 and GB/T 2900.17 apply to this document. 3.1 Time synchronization and time synchronization system Time synchronization means that a standard time source provides a unified time synchronization signal for the traveling wave fault location device. Time synchronization system refers to the system that can provide standard time, such as Beidou system, global positioning system (GPS), etc. 3.2 Fault location A technology to determine the location of the transmission line fault by using the electrical quantity when the transmission line fails. 3.3 Traveling wave The voltage waves and current waves propagating along the transmission line, among which the traveling waves propagating in the reference direction are called forward traveling waves (or forward traveling waves). Wave), traveling waves propagating in the opposite direction of the reference direction are called reverse traveling waves (or reverse traveling waves). The traveling wave process is built on the distribution Parametric line model based on the telegraph equation to describe. 3.4 Traveling wave ranging A technology that uses the propagation characteristics of traveling waves on the faulty line to determine the location of the line fault. 3.5 Single-ended traveling wave ranging Use the initial traveling wave of the fault detected at one end of the line and the reflected wave of the characteristic impedance discontinuity point such as the fault point and the opposite bus bar The distance of arrival time difference determines the location of the fault point. 3.6 Double-ended traveling wave ranging The method of determining the location of the fault point by using the time difference between the initial traveling wave generated by the internal fault of the line and reaching both ends of the line. 3.7 Traveling wave fault location device The equipment that collects and processes line traveling wave signals at the factory station and can give the ranging results, usually consists of traveling wave acquisition units and industrial The control machine and other peripherals are constituted. 3.8 Master station of fault location system It is used to receive the data transmitted by various traveling wave fault location devices and analyze the results to give the measurement results. Equipment managed by the ranging device. 3.9 Fault location error The distance between the fault point measured by the traveling wave distance measuring device and the actual fault point. 3.10 Time synchronization error The relative time difference produced by different traveling wave fault location devices when marking the time of occurrence of the same event.4 Technical requirements4.1 Environmental conditions 4.1.1 Normal working atmospheric conditions The normal working atmospheric conditions of traveling wave fault location devices should meet the following requirements. a) Ambient temperature. -10℃～＋55℃. b) Relative humidity. 5% to 95% (no condensation or freezing inside the device). c) Atmospheric pressure. 80kPa～106kPa. 4.1.2 Atmospheric conditions for normal tests The normal test atmospheric conditions are as follows. a) Ambient temperature. (20±5)℃. b) Relative humidity. 45% to 75%. c) Atmospheric pressure. 86kPa～106kPa. 4.1.3 Extreme environmental conditions for storage and transportation 4.1.4 Surrounding environment The installation environment of the traveling wave fault location device should meet the following requirements. a) It should be shaded, protected from rain and snow, protected from lightning, sand and dust, and ventilated. b) No electromagnetic interference exceeding 4.8 is allowed. c) The installation site should meet the requirements of Class B safety requirements in GB/T 9361-2011. d) There is no vibration that exceeds the severity level 1 specified in GB/T 11287-2000 at the place of use, and it has been transported and stored There will be no impacts and collisions that exceed the severity level of 1 specified in GB/T 14537-1993. e) The medium without explosion hazard, and the surrounding medium should not contain metal that can corrode metal, destroy insulation, and surface plating and coating The medium and conductive medium of the layer are not allowed to have obvious water vapor or serious mold. f) All reliable grounding points at the installation site shall comply with relevant standards. 4.1.5 Special environmental conditions When the environmental conditions specified in 4.1.1 ~ 4.1.4 are exceeded, it is determined by the user and the manufacturer. When the ambient temperature of the installation site obviously exceeds 4.1.1 normal working environment conditions, the preferred ambient temperature range It is specified as. a) Especially cold areas. -25℃～55℃. b) Especially hot areas. -10℃～70℃. 4.2 Appearance, structure and other requirements 4.2.1 The size of the traveling wave fault location device cabinet shall meet the requirements of GB/T 7267-2015. 4.2.2 The traveling wave fault location device should take necessary anti-static and anti-electromagnetic radiation interference measures. The non-charged metal of the chassis The parts should be electrically connected and grounded reliably. 4.2.3 The connecting wires used in the different circuits of the device should be copper core wires, and their cross-sectional area should comply with the table in DL/T 478-2013 1.Provisions. 4.2.4 The chassis of the traveling wave fault location device shall meet the heat dissipation requirements of the heating components. 4.2.5 All the lead-out terminals of the traveling wave fault location device are not allowed to have power on the weak current system of the same device (such as the power supply system of the CPU) Link. For different circuits, isolation measures such as photoelectric coupling and relay transfer can be adopted respectively. 4.3 Main functions of traveling wave fault location device 4.3.1 The distance measurement error of the traveling wave fault location device should not be affected by factors such as operation mode, fault location, fault type, load current, etc. Prime impact. 4.3.2 The traveling wave fault location device can use the traveling wave that appears when the line is closed to determine the traveling wave speed, or use the artificial short circuit test. The test results correct the traveling wave velocity. 4.3.3 The traveling wave fault location device should be connected to the standard IRIG-B code signal in the station, and it should be equipped with the calibration and time signal calibration. Punctuality function. 4.3.4 The traveling wave fault location device should realize the measurement and recording of the traveling wave, and the device should support the GB/T 14598.24-2017 regulations. The specified COMTRADE format data file. 4.3.5 The traveling wave fault location device shall not lose the recorded data due to the interruption of the external power supply. 4.3.6 The traveling wave fault location device is equipped with traveling wave location analysis software, which can automatically retrieve the traveling wave information of the opposite device and realize the Automatic analysis and manual analysis of wave ranging. 4.3.7 The traveling wave fault location device should be able to automatically give the fault location result (under normal network communication, it should be within 10 Ranging results are given within minutes). 4.3.8 The traveling wave fault location device should be equipped with a communication interface for receiving and sending traveling wave data. It should use the power dispatch data network or The electric power dedicated channel transmits the traveling wave data to the traveling wave fault location device at the opposite end of the line or the remote traveling wave location master station. 4.3.9 The traveling wave fault location device shall have the function of operating status monitoring and abnormal alarm, and provide corresponding message or contact report. The warning signals are as follows. a) The panel of the traveling wave ranging device should be equipped with indicator lights such as device operation, time synchronization abnormality, communication abnormality and device abnormality. b) The local alarm signal should have at least 3 pairs of hard contact outputs, which are device startup, device power failure, and device failure. c) The alarm signal output by the communication protocol should include. time synchronization abnormality, device abnormality, etc. 4.3.10 The traveling wave fault location device shall have a variety of starting methods, which can be easily selected by the user, and Change far away. The switch can be connected according to user requirements as a basis for judging faulty lines. 4.3.11 The traveling wave fault location device shall support the DL/T 860 communication standard protocol. See Appendix B for DL/T 860 modeling specifications. 4.3.12 The traveling wave fault location device shall meet the following network security protection requirements. a) Identification Identity authentication should meet the following requirements. 1) The user who logs in should be identified and authenticated, and the identification should be unique. 2) It shall have the function of handling login failure, which can be configured and enabled to end the session, limit the number of illegal logins and Record connection timeout and automatic exit and other related measures. b) Access control Access control should meet the following requirements. 1) Accounts and permissions should be assigned to the logged-in user. 2) It should have the function of providing access control, and control the user's access to the device files and other objects according to the security policy. 3) The TCP/UDP port opened by the traveling wave fault location device should not include FTP, Telnet, HTTP(s) related Ports, open ports should be service ports or operation and maintenance ports. 4) The external communication of the traveling wave fault location device should not have abnormal network access behavior, and all communication data should be Service related messages. c) Resource control. Resource control should meet the following requirements. 1) When the traveling wave fault location device is communicating, one of the two parties has not made any response for a period of time, The other party should automatically end the session. 2) The maximum number of concurrent sessions of the traveling wave fault location device should be limited. d) Software fault tolerance Software fault tolerance should meet the following requirements. 1) It shall have the function of data validity inspection to ensure that the internal input through the man-machine interface or the communication interface The content meets the system setting requirements. 2) When a single function of the traveling wave fault location device software is abnormal, the remaining software of the traveling wave fault location device should Can continue to provide some functions to ensure that the device can implement the necessary measures. e) Data integrity Check code technology or cryptographic technology should be used to ensure the integrity of important data during transmission. 4.4 Basic parameters of traveling wave fault location device 4.4.1 Rated parameters Alternating current. 5A, 1A. AC voltage. 100V, 3/100 V. 4.4.2 Power consumption DC power circuit. when working normally, not more than 40W; when the line fails, not more than 50W. 4.4.3 Number of monitoring lines The number of monitoring lines of each traveling wave fault location device is. 1-8. 4.4.4 Overload capacity AC current loop. 2 times the rated current, continuous work. 10 times the rated current, allowing 10s. 40 times the rated current, allowing 1s. AC voltage circuit. 1.4 times the rated voltage, continuous work. 2 times the rated voltage, allowing 10s. 4.4.5 Measurement accuracy and sampling frequency Inherent accuracy of AC current loop. AC current is within the range of 0.05IN~20IN, the relative error is not more than 2.5% or absolute The error is not more than 0.01IN. The inherent accuracy of the AC voltage circuit. when the AC voltage is within the range of 0.01UN~1.5UN, the relative error is not more than 2.5% Or the absolute error is not more than 0.002UN. The sampling frequency is not less than 1MHz. 4.4.6 Data storage The data storage requ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of DL/T 357-2019_English be delivered?Answer: Upon your order, we will start to translate DL/T 357-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of DL/T 357-2019_English with my colleagues?Answer: Yes. The purchased PDF of DL/T 357-2019_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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