定价： 113元 / 折扣价： 97 元

This guide covers the design, installation, and monitoring of time synchronization systems in power utility substations. This includes time sources such as Global Positioning Satellite (GPS), and time distribution systems such as Inter-Range Instrumentation Group Format B (IRIG-B), Network Time Protocol (NTP) or Simple Network Time Protocol (SNTP), and IEEE Std C37.238™ plus IEC/IEEE 61850-9-3. This guide assumes that the time source and the intelligent electronic device (IED) have accurate clocks.

定价： 159元 / 折扣价： 136 元

Ethernet POWERLINK is a communication profile for Real-Time Ethernet (RTE). It extends Ethernet according to the IEEE 802.3 standard with mechanisms to transfer data with predictable timing and precise synchronisation. The communication profile meets timing demands typical for high performance automation and motion applications. It does not change basic principles of the Fast Ethernet Standard IEEE 802.3 but extends it towards RTE. Thus it is possible to leverage and continue to use any… read more standard Ethernet silicon, infrastructure component or test and measurement equipment like a network analyzer. Note that this standard does not add or otherwise change EPSG DS 301. read less

定价： 293元 / 折扣价： 250 元

定价： 70元 / 折扣价： 60 元

The scope of this standard includes the review of various existing analytic techniques used to represent relay operating characteristic curve shapes and proposes analytical (formula) representation of typical operating characteristic curve shapes to foster some standardization of available inverse-time relay characteristics provided in microprocessor or computer relay applications.

定价： 58元 / 折扣价： 50 元

定价： 54元 / 折扣价： 46 元

This standard defines a procedure for naming time sequence data (TSD) files that originate from digital protection and measurement devices, such as transient data records, event sequences, and periodic data logs. The filename includes, among other features, key portions of the information contained in the file, including, but not limited to, the names of the circuit, substation, and recording device, and the date and time of event occurrence.

定价： 87元 / 折扣价： 74 元

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This standard defines communication delivery time of information to be exchanged within and external to substation integrated protection, control, and data acquisition systems.

定价： 141元 / 折扣价： 120 元

This standard defines profiles that select features, options, configurations, defaults, protocols and procedures of bridges, stations, and LANs that are necessary to build networks that are capable of transporting fronthaul streams, which are time-sensitive. NOTE—Stream and flow are used as synonyms in this document

定价： 76元 / 折扣价： 65 元

This standard establishes common requirements for associating time tags with data items recorded or transmitted by intelligent electronic devices (IEDs). The standard specifies time tag attributes and requirements for describing time tag accuracy.

定价： 83元 / 折扣价： 71 元

定价： 92元 / 折扣价： 79 元

This standard specifies the protocol, data encapsulations, and synchronization procedures used to enable interoperability between time-sensitive audio, video, and control applications using the quality of service capabilities provided by IEEE 802 Time-Sensitive Networking standards.

定价： 206元 / 折扣价： 176 元

This standard covers the fundamental metrology for describing random instabilities of importance to frequency and time metrology. Quantities covered include frequency, amplitude, and phase instabilities; spectral densities of frequency, amplitude, and phase fluctuations; and time-domain deviations of frequency and phase fluctuations. In addition, recommendations are made for the reporting of measurements of frequency, amplitude, and phase instabilities, especially with regard to calculation… read more techniques, but also including experimental parameters. The annexes cover basic concepts and definitions, time prediction, and confidence limits when estimating deviations and spectral densities from a finite data set. The annexes also cover translation between the frequency domain and time domain instability measures, examples on how to calculate the time-domain measures of frequency and phase fluctuations, and an extensive bibliography of the relevant literature. Systematic instabilities, such as environmental effects and aging, are discussed in IEEE Std 1193 [B39] read less

定价： 81元 / 折扣价： 69 元

This standard specifies an extended profile for the use of IEEE Std 1588-20081 in power system protection, control, automation, and data communication applications utilizing an Ethernet communications architecture. The profile specifies a well-defined subset of IEEE 1588 mechanisms and settings aimed at enabling device interoperability, robust response to network failures, and deterministic control of delivered time quality. It is compliant with IEC/IEEE 61850-9-3:2016, which specifies the preferred physical layer, Ethernet; the higher level protocol used for message exchange, Precision Time Protocol (PTP); and the PTP protocol configuration parameters. Special attention is given to ensuring consistent and reliable time distribution within substations, between substations, and across wide geographic areas. As such, this profile extends IEC/IEEE 61850-9-3:2016 with continuous monitoring of time inaccuracy, and optionally local time based on Coordinated Universal Time (UTC).

定价： 65元 / 折扣价： 56 元