偏差电量考核机制下售电公司CCHP系统运行优化模型

doi:10.12204/j.issn.1000-7229.2020.10.011

摘要/Abstract

摘要：

针对我国电力现货市场形成前的过渡阶段售电公司偏差电量考核风险问题,提出利用冷热电联供(combined cooling, heating and power, CCHP)系统的可控出力特性,将其作为降低偏差电量的有效手段。同时,在日结算周期的偏差电量考核机制下,提出了计及偏差电量考核成本的售电公司CCHP滚动优化模型,解决了降低偏差电量的可操作性问题。以某售电公司代理用户负荷数据为例的仿真算例表明,不管在正偏差还是负偏差情况下,通过滚动优化调节CCHP的出力,可在降低偏差电量考核成本的同时,提高售电公司的整体盈利。

关键词: 偏差电量考核, 售电公司, 冷热电联供系统, 滚动优化

Abstract:

The power retailers face the risk of electricity deviation penalty in the transitional period before the formation of the spot market of electric power in China. In this paper, the CCHP system is provided as an effective means to reduce the deviation power because of its controllable output. At the same time, the rolling optimal model of the CCHP considering the cost of deviation power penalty is proposed under the daily deviation penalty mechanism, which solves the operability problem of reducing the deviation power. The simulation is performed on the basis of the load of a power retailer. The simulation results show that, no matter in the case of positive deviation or negative deviation, by rolling optimization of the operation mode of CCHP, the cost of deviation penalty can be reduced and the overall revenue of the power retailer can be improved.

Key words: deviation penalty, power retailer, CCHP system, rolling optimization

中图分类号:

TM73

喻理, 李成鑫, 张宇, 刘宜成. 偏差电量考核机制下售电公司CCHP系统运行优化模型[J]. 电力建设, 2020, 41(10): 98-105.

YU Li, LI Chengxin, ZHANG Yu, LIU Yicheng. Optimal Model for CCHP of Power Retailer Considering the Daily Deviation Penalty[J]. ELECTRIC POWER CONSTRUCTION, 2020, 41(10): 98-105.

图/表 12

图1 售电公司CCHP多能系统结构

Fig.1 CCHP system structure of power retailer

图2 滚动优化策略流程

Fig.2 Flow chart of rolling optimization strategy

图3 售电公司电负荷预测与实际情形

Fig.3 Power load forecasting and actual data of the power retailer

图4 售电公司冷热负荷预测曲线

Fig.4 Forecasting curve of cooling and hot water load of the power retailer

表1 CCHP系统参数

Table 1 Parameters of CCHP system

表2 分时电价与气价

Table 2 Time-of-use electricity price and natural gas price

表3 售电公司相关价格参数

Table 3 Relevant price parameters of the power retailer

图5 预测负荷模式2下CCHP系统最优出力方案

Fig.5 Optimal output scheme of CCHP system under mode 2 in predicted load situation

表4 不同预测误差下模式1、2日利润对比

Table 4 Profit comparison between mode 1 and 2 under different forecasting errors

图6 实际负荷情形1下模式2、3中CCHP系统出力对比

Fig.6 Output comparison of CCHP system under mode 2 and 3 in actual load situation 1

表5 实际负荷情形1下模式1、2、3收益

Table 5 Revenue of mode 1, 2 and 3 in actual load situation 1

图7 实际负荷情形2下模式2、3收益

Fig.7 Revenue of mode 2 and 3 in actual load situation 2

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