定价： 398元

定价： 353元

定价： 398元

定价： 307元

定价： 702元

定价： 307元

定价： 574元

定价： 61元 / 折扣价： 52 元

定价： 149元 / 折扣价： 127 元

This guide provides rationale and guidance for operating lead-acid batteries in remote hybrid power systems, taking into consideration system loads and the capacities of the system's renewable-energy generator(s), dispatchable generator(s), and battery(s). It also provides guidance for selecting an appropriate lead-acid battery technology for various system operating strategies.

定价： 66元 / 折扣价： 57 元

This guide contains a field test procedure for lead-acid batteries used in PV hybrid power systems. Battery charging parameters are discussed with respect to PV hybrid power systems. The field test procedure is intended to verify the battery's operating setpoints and battery performance. Discussion on how to interpret test results is also included. This guide is applicable to all stand-alone PV hybrid power systems where PV and an engine generator are the only charging sources. This guide does not include stand-alone PV-only systems.

定价： 58元 / 折扣价： 50 元

This guide describes the general requirements, functional and technical performance requirements, test requirements, labeling and packaging requirements, transportation and storage requirements, supply integrity requirements, and quality assurance requirements for hybrid high-voltage direct current (HVDC) transmission control and protection equipment. This guide is applicable to control and protection equipment of parallel two-terminal or multiterminal hybrid dc transmission systems, which… read more contain line-commutated converter (LCC) valves and modular multilevel converter (MMC) valves, and can be used as the basis for equipment design, manufacturing, testing and acceptance. read less

定价： 62元 / 折扣价： 53 元

This standard presents engineering design procedures for the electrical protection of telecommunication facilities serving electric supply locations through the use of metallic wire-line components in part of the telecommunication circuit and optical fiber systems in the remainder of the telecommunication circuit. Other telecommunication alternatives such as radio and microwave systems are excluded from this document.

定价： 110元 / 折扣价： 94 元

This document provides general guidance on the control and protection tests of hybrid multi-terminal high-voltage direct current (HVDC) systems, which consist of line-commutated converter (LCC) at the sending end and voltage source converter (VSC) at the receiving end. It mainly includes preconditions, composition of the test system, test contents and boundaries, test items and design principles, and organization and quality control requirements. The tests involved include factory test,… read more acceptance test, site commissioning test, and trial operation. read less

定价： 62元 / 折扣价： 53 元

定价： 107元