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27 ELEKTRI- JA SOOJUSENERGEETIKA

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Uued standardid


EVS-EN IEC 62962:2019
Hind 25,03 EUR
Identne IEC 62962:2019; EN IEC 62962:2019
Particular requirements for load-shedding equipment (LSE)
The purpose of this document is to provide requirements for equipment to be used in energy efficiency systems. This document covers load-shedding equipment (LSE). Guidelines relating to safety for LSE as given in IEC Guide 110 have been followed. This document applies to load-shedding equipment for household and similar uses. The loadshedding function is used in energy management systems to optimize the overall use of electrical energy including production and storage. Load-shedding can be used for example for energy efficiency purposes as per IEC 60364-8-1:2019. This document applies to LSE for operation under normal conditions: – AC circuits with a rated frequency of 50 Hz, 60 Hz or both, with a rated voltage not exceeding 440 V (between phases), a rated current not exceeding 125 A and a rated short-circuit capacity not exceeding 25 000 A; or – DC circuits1. LSEs are intended to control the energy supplied to one or more load, circuit or mesh when: – defined conditions of time and current are reached; – a command or information from an external system is received. An LSE is intended to serve as: – a single equipment having all the necessary means able to control the loads (e.g. the electrical energy management function is embedded in such an equipment); or – a unit integrated into a more complex equipment or an independent equipment being part of an electrical energy management system (EEMS); or – an assembly of independent equipment forming an LSE (e.g. an LSE with external current sensors); or – as a combination of the above points. LSE can have a wireless interface. LSE is part of the fixed installation. NOTE 1 This document covers load shedding equipment in the fixed installations including portable appliances connected thereto. LSE are intended for use in circuits with protection against electrical shock and over-current according to IEC 60364 (all parts). NOTE 2 For example, fault protection (indirect contact protection) can be covered as follows: – in TT systems, by an upstream RCBOs or RCCBs according to IEC 61008-1 and IEC 61009-1; – in a TN system, by an upstream over-current protective device. LSEs do not, by their nature, provide an isolation function nor the over-current protection. LSEs are normally installed by instructed persons (IEC 60050-195:1998, 195-04-02) or skilled persons (IEC 60050-195:1998, 195-04-01) and normally used by ordinary persons (IEC 60005-195:1998, 195-04-03). This document contains all requirements necessary to ensure compliance with the operational characteristics required by type tests for LSEs based on single equipment or based on an assembly of independent equipment. These requirements apply for standard conditions of temperature and environment as given in 5.1. They are applicable to LSEs with a degree of protection of IP 20 intended for use in an environment with pollution degree 2. For LSE having a degree of protection higher than IP 20 according to IEC 60529, for use in locations where arduous nvironmental conditions prevail (e.g. excessive humidity, heat or cold or deposition of dust) and in hazardous locations (e.g. where explosions are liable of occur), special construction can be required. If other functions are included in LSE, these functions are covered by the relevant standards. This document does not address communication aspects such as protocols, interoperability, data security and any other related aspects.

IEC TR 63214:2019
Hind 88,98 EUR
Nuclear power plants - Control rooms - Human factors engineering
IEC TR 63214:2019 provides a summary of arguments and a technical basis for the development of a new Human Factors Engineering IEC standard and the alignment of IEC 60964. Based on the provided argumentation, the participating members will vote for such an approach. The proposed content of the new standard provides the basis for fruitful discussion within IEC SC 45A WG 8 and raises interest in the development of the new standard. The scope of the new HFE IEC standard will follow a holistic approach towards the design of the plant-wide control rooms and all HMI, including e.g. the local control stations located throughout the plant. The general principle is to consider the complete nuclear installation design as a sociotechnical system, in a holistic and integrated way.

CLC/TS 50586:2019
Hind 35,43 EUR
Open Smart Grid Protocol (OSGP)
This document describes the data interface model, application-level communication, management functionalities, and security mechanism for the exchange of data with smart-grid devices. The following five areas are referred to as the Open Smart Grid Protocol (OSGP). • Data exchange with smart-grid devices allows Utility Suppliers to collect customer usage information such as billing data and load profiles, monitor and control grid utilization, provision scheduling of tariffs, detect theft and tampers, and to issue disconnects, to name a few. Meter features are described in Clauses 7 and 8. • The OSGP data interface uses a representation-oriented model (tables and procedures) which require low overhead. The model is described in Clause 5, with specific tables specified in Annex A, Annex B, and procedures in Annex C and Annex D. • The OSGP application protocol is designed to use the EN 14908-1:2014 communication stack over narrowband power line channels. Clause 9 describes the messages that are used to access OSGP data. An essential feature of the protocol over power line channels is a repeating mechanism which gives the application layer the control and responsibility for forwarding packets among devices, independent of the routing protocol or limitations of underlying layers. Therefore OSGP can be adapted to other communication stacks and medium, although such adaptation is outside of the scope of this specification. The repeating mechanism is described in Annex G. • OSGP management features include the discovery of devices and the routing topology in a protocol called Automated Topology Management (described in Clause 4) commissioning of devices for secured communication (Annex F), monitoring of device connectivity, and updating of device firmware. • OSGP security covers authentication, encryption, and key management. This is detailed in Annex F.

ISO/TS 50044:2019
Hind 140,58 EUR
Energy saving projects (EnSPs) -- Guidelines for economic and financial evaluation
This document gives guidelines for how to compare and prioritize energy saving projects (EnSPs) before implementation, using economic and financial evaluation. It includes a common set of principles. This document is applicable to all EnSPs and energy performance improvement actions (EPIAs) that are developed by stakeholders and organizations for improving energy performance, irrespective of the type and size of an organization and its energy use and consumption. The methodology for quantification methods for predicted energy savings and measurement and verification (M&V) of the energy savings are not in the scope of this document. NOTE The methodology for the estimation of the energy savings is critical when determining cost savings. The methodology of the scenario generation (building) for future energy saving measures and actions is not covered by this document. General rules and methodologies within this document can be used either independently or in conjunction with other standards and protocols.

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prEN IEC 63027:2019
Identne IEC 63027:201X; prEN IEC 63027:2019
Tähtaeg 15.01.2020
DC arc detection and interruption in photovoltaic power systems
This standard applies to equipment used for the detection and optionally the interruption of electric d.c. arcs in photovoltaic (PV) system circuits. The standard covers test procedures for the detection of serial arcs within PV circuits, and the response times of equipment employed to interrupt the arcs. The standard defines reference scenarios according to which the testing shall be conducted. This standard covers equipment connected to systems not exceeding a maximum PV source circuit voltage of 1500 V d.c. The detection of parallel circuit arcs is not covered in this document. This standard is not applicable to d.c. sources or applications other than PV d.c. sources. NOTE Parallel arc detection is under consideration for a future edition.
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prEN IEC 60904-10:2019
Identne IEC 60904-10:201X; prEN IEC 60904-10:2019
Tähtaeg 15.01.2020
Photovoltaic devices - Part 10: Methods of linear dependence and linearity measurements
This part of IEC 60904 describes the procedures used to measure the dependence of any electrical parameter (Y) of a photovoltaic (PV) device with respect to a test parameter (X) and to determine the degree at which this dependence is close to an ideal linear (straight-line) function. It also gives guidance on how to consider deviations from the ideal linear dependence and in general on how to deal with non-linearities of PV device electrical parameters. Typical device parameters are the short-circuit current ISC, the open-circuit voltage VOC and the maximum power Pmax. Typical test parameters are the temperature T and the irradiance G. However, the same principles described in this standard can be applied to any other test parameter with proper adjustment of the procedure used to vary the parameter itself. Performance evaluations of PV modules and systems, as well as performance translations from one set of temperature and irradiance to another, frequently rely on the use of linear equations (see for example IEC 60891, IEC 61853-1, IEC 61829 and IEC 61724-1). This standard lays down the requirements for linear dependence test methods, data analysis and acceptance limits of results to ensure that these linear equations will give satisfactory results. Such requirements prescribe also the range of the temperature and irradiance over which the linear equations may be used. This standard gives also a procedure on how to correct for deviations of the short-circuit current ISC from the ideal linear dependence on irradiance (linearity) for PV devices, regardless of whether they are classified linear or non-linear according to the limits set in Clause 9.7 of this standard. The impact of spectral irradiance distribution and spectral mismatch is considered for measurements at solar simulators as well as under natural sunlight. The measurement methods described here apply to all PV devices, with some caution to be used for multi-junction PV devices, and are intended to be carried out on a device, or in some cases on an equivalent device of identical technology, that is stable according to the criteria set in the relevant part of IEC 61215. These measurements are meant to be performed prior to all measurements and correction procedures that require a linear device or that prescribe restrictions for non-linear devices. The main methodology used in this standard is based on a fitting procedure in which a linear (straight-line) function is fitted to a set of measured data points {Xi,Yi}. The linear function uses a least-squares fit calculation routine, which in the most advanced analysis also accounts for the expanded combined uncertainty (k=2) of the measurements. The linear function crosses the origin in the case of short-circuit current data versus irradiance. The deviation of the measured data from the ideal linear function is also calculated and limits are prescribed for the permissible percentage deviation. Procedures to determine the deviation of the Y(X) dependence from the linear (straight-line) function are described in Clauses 6 (measurements under natural sunlight and with solar simulator), 7 (differential spectral responsivity measurements) and 8 (measurements via two-lamp and N-lamp method). Data analyses to determine the deviations from the linear function are given in Clause 9. A device is considered linear for the specific measured dependence Y(X), when it meets the requirements of 9.7.
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