辅助服务是指为了保障电力系统安全运行和电力商品质量(包括频率、电压和可靠性),发电厂提供的除正常电能生产外的其他服务。辅助服务分为基本辅助服务和有偿辅助服务。基本辅助服务是指为了保证电力系统安全运行,发电机组必须具备的辅助服务,含频率的一次调整及在不影响其有功 Ancillary services refer to other services provided by a power plant in addition to the normal production of electricity in order to ensure the safe operation of the power system and the quality of the power commodities (including frequency, voltage and reliability). Auxiliary services are divided into basic auxiliary services and paid auxiliary services. Basic auxiliary service means that in order to ensure the safe operation of power system, generator set must have auxiliary services, including a frequency adjustment and without affecting its meritorious service