市场条件下电力库要向发电商购买自动发电控制 (AGC)辅助服务。文中发展的AGC当量电价法首先利用概率学实用当量电价法 ,日前评定出次日各机组AGC的容量成本价值 ,以及为此预留AGC容量的机会成本价值 ,而次日各机组AGC的总价值是这两者之和。文中用一个简化方法作上述叙述 ,回避了较复杂的随机生产模拟技术。同时建议了一个保证金制度 ,即在日前支付中先持留上述AGC总价值 ,日后经过考核再返还。AGC当量电价法利用当日机组收到的AGC指令和有功出力的实时记录 ,计算它们每小时的统计学的相关系数 ,依此实现日后考核与返还 ,包括了奖与惩。文中还讨论了应用中的若干问题。新方法充分发挥了当量电价方法的长处 ,也能体现AGC平衡负荷随机波动的本质 ,其保证金制度又是市场上有效的制度 Under market conditions, the electric power bank should purchase automatic generation control (AGC) auxiliary service from the generator. The development of AGC equivalent electricity price method first uses the probabilistic practical equivalent electricity price method, recently evaluated the capacity cost value of AGC for each unit on the next day, and reserves the opportunity cost value of AGC capacity for this purpose, and the next day the total value of AGC of each unit Is the sum of the two. The article uses a simplified method for the above description, to avoid the more complex stochastic production simulation technology. At the same time, a margin system is proposed, that is, the total value of the above-mentioned AGC should be retained before the payment is made in the past and will be returned afterwards in the future. AGC equivalent electricity price method uses the AGC instruction received by the crew on the day and the real-time record of active output to calculate their hourly statistical correlation coefficient, so as to achieve the future assessment and return, including the award and punishment. The article also discusses some of the problems in the application. The new method gives full play to the advantages of the equivalent electricity price method, but also can reflect the nature of the AGC equilibrium load random fluctuations, the margin system is an effective system in the market