CN113595060A - 一种基于电力载波技术的能源多能融合调度方法 - Google Patents
一种基于电力载波技术的能源多能融合调度方法 Download PDFInfo
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Abstract
本发明公开了一种基于电力载波技术的能源多能融合调度方法,包括:判断用户响应资格;与满足响应资格的用户达成需求响应协定;电力主站运营平台监测电力负荷状况;根据电力负载及需求响应量下达任务;对用户实时用电状况进行非入侵式判定;通过宽带载波断路器实现电力负载调控。上述技术方案通过低压用户负荷曲线与电网负荷曲线之间峰值负荷时段的重合情况对用户空开资格进行判定,针对符合条件的用户进行协议邀约,并且在调控前针对用户具体用电情况实现非入侵式监测,从而针对用电情况实现智能调控的目的,及时的精准负荷控制和管理,释放灵活用电负荷,增强电网度峰能力,可大大缓解用电高峰时期负荷压力,达到削峰填谷,节能减排的效果。
Description
技术领域
本发明涉及电力负荷调节技术领域,尤其涉及一种基于电力载波技术的能源多能融合调度方法。
背景技术
有资料显示,随着全社会用电负荷峰值不断突破记录,电网调峰压力日趋增长,为了解放多高弹电网的建设与发展,亟待开拓更广泛的需求响应手段。现有的电力负荷调节主要围绕以大用户的高压需求侧响应展开,低压需求侧响应由于无法实现精准负荷远距离自动控制,响应时段内不能做出及时有效的响应,一直以来无法大规模落实。
由于低压用户基数庞大,调动低压用户的闲置负荷,通过低压需求侧响应,让千家万户参与到多高弹电网建设,唤醒“沉睡的资源”,为全方位向能源互联网演进,贡献巨大产品价值,对推动多元融合高弹性电网的建设和发展具有极为重要的现实意义。利用先进的通讯技术和智能技术,实现及时的精准负荷控制和管理,释放灵活用电负荷,增强电网度峰能力,可大大缓解用电高峰时期负荷压力,达到削峰填谷,节能减排,提升设备利用率,减少输配电基建投入的效果。
中国专利文献CN107671414A公开了一种“负载运行的控制方法及电网***”。应用于电网***中,也可用于负载中,电网***中有多个负载,应用于电网***中的方法包括:确定输入参数的波动量;根据波动量和多个负载的优先级确定对应的控制策略;根据控制策略控制多个负载的运行状态。上述技术方案对于负载的调节方式过于固定,容易对用户生活产生不良影响。
发明内容
本发明主要解决原有的技术方案缺少调节针对性,容易导致不良后果的技术问题,提供一种基于电力载波技术的能源多能融合调度方法,通过低压用户负荷曲线与电网负荷曲线之间峰值负荷时段的重合情况对用户空开资格进行判定,针对符合条件的用户进行协议邀约,并且在调控前针对用户具体用电情况实现非入侵式监测,从而针对用电情况实现智能调控的目的,及时的精准负荷控制和管理,释放灵活用电负荷,增强电网度峰能力,可大大缓解用电高峰时期负荷压力,达到削峰填谷,节能减排,提升设备利用率,减少输配电基建投入的效果。
本发明的上述技术问题主要是通过下述技术方案得以解决的:本发明包括以下步骤:
S1判断用户响应资格;
S2与满足响应资格的用户达成需求响应协定;
S3电力主站运营平台监测电力负荷状况;根据历史负荷判断,若响应时段内当前负荷加上套餐签约负荷达到历史量则立即开启预测邀约,并将具体数据传输至手持控制终端,通过手持控制终端下达任务。
S4根据电力负载及需求响应量下达任务;
S5对用户实时用电状况进行非入侵式判定;
S6通过宽带载波断路器实现电力负载调控。
作为优选,所述的步骤S1判断用户响应资格具体包括:
S1.1采集电网负荷曲线和低压用户负荷曲线;
S1.2对电网负荷曲线和低压用户负荷曲线进行归一化处理;
S1.3根据采集电网负荷曲线设定重合判断区间;
S1.4针对低压用户负荷曲线在重合判断区间的重合率判断用户响应资格。
作为优选,所述的步骤S1.3中设定重合判断区间包括:将电网负荷曲线的峰值Lmax的时刻Tmax作为基准点,在基准点Tmax前电网负荷上升时段依次取负荷上升时刻Tx1和Tx2,令
取电网负荷变化率Px最大时的上升tx1作为起始时刻;
在基准点Tmax后电网负荷下降时段依次取负荷下降时刻Ty1和Ty2,令
取电网负荷变化率Py最大时的下降Ty2作为结束时刻,将Lx1与LY2较小值作为横轴,较大值所在时刻作为纵轴,将Tx1与Ty2之间电网负荷曲线、横轴、纵轴构成的区域作为重合判断区间AT。
作为优选,所述的步骤1.4具体包括:进行一次判断,即判断低压用户负荷曲线与重合判断区间之间的总重合率θ1,若总重合率θ1≥80%,则认定为满足用户响应资格;若总重合率θ1≤40%,则认定为不满足用户响应资格;若总重合率40%<θ1<80%,则进行二次判断。
作为优选,所述的二次判断具体包括:取Tx1与Ty2之间低压用户负荷曲线的峰值时刻lmax的时刻tmax作为基准点,在基准点tmax前电网负荷上升时段依次取负荷上升时刻tx1和tx2,令
取电网负荷变化率Px最大时的上升tx1作为起始时刻;
在基准点Tmax后电网负荷下降时段依次取负荷下降时刻Ty1和Ty2,令
取电网负荷变化率py最大时的下降ty2作为结束时刻,将lx1与lY2较小值作为横轴,较大值所在时刻作为纵轴,将tx1与ty2之间电网负荷曲线、横轴、纵轴构成的区域作为低压用户区间At;
判断tx1与ty2之间的重合判断区间与低压用户区间At的重合率θ2,若重合率θ2≥80%,则认定为满足用户响应资格;若重合率θ2<80%,则认定为不满足用户响应资格。
作为优选,所述的步骤S2与用户达成需求响应协定包括预测邀约方式和套餐签约方式,所述预测邀约方式在响应时段前向低压用户发出该时间段的需求响应邀约,用户自行确认是否参与响应;所述套餐签约方式为用户根据自身需要,自愿选择参与响应的电器设备,供电企业在响应时段内根据社会用电负荷情况,自由选择切断和送电时间。用户可以根据自身需要取消参与邀约,取消后供其他想要参与邀约的用户参与。
需求响应***根据电网历史日负荷曲线(或负荷数据),经过一系列预测算法,预测下一日负荷峰值时间段(例如18:00至20:00),并通过“网上国网APP”向低压用户发出该时间段的需求响应邀约,用户在手机上操作,确认参与响应,确认信息反馈给需求响应***。第二日响应时段开始(例如18:00),需求响应***发送分闸指令,给到用户所在台区的集中器(台区变压器二次侧),集中器收到指令后,通过电力线HPLC通讯,传输指令给智能空开,智能空开接收指令,进行跳闸操作,并在跳闸完成后反馈已跳闸信号给需求响应***。响应时段结束(例如20:00),同样的,需求响应***发送合闸指令,给到用户所在台区的集中器(台区变压器二次侧),集中器收到指令后,通过电力线HPLC通讯,传输指令给智能空开,智能空开接收指令,进行合闸操作,并在合闸完成后反馈已跳闸信号给需求响应***。在响应期内,需求响应***可通过对用户参与响应后的负荷变化情况,和历史负荷使用规律进行比对,判断是否为有效响应,若为有效响应,则用户还可在网上国网APP上领取补贴。
作为优选,所述的步骤S5对用户实时用电状况进行非入侵式判定具体包括:
S5.1通过安装在用户总输入端的电表实现对电力参数的监测并拟合电力参数曲线;
S5.2提取电力参数曲线中的瞬变电流值并进行判断;
S5.3若瞬变电流值超过阈值,提取瞬变时刻电力参数变化构建正瞬变点和负瞬变点;
S5.4将瞬变点连接构成电力参数变化折线图;
S5.5在进行调度前对此时刻之前的正瞬变点与负瞬变点进行匹配实现对用户运行电器的判断。
作为优选,所述的步骤S5.2电力参数曲线中电流瞬间变化量超过设定阈值ΔI,则认定为非电流波动变化值,通过此时刻的电流和电压数据实现功率瞬间变化量的计算,通过功率瞬间变化量在总负载中的体现确定用户家中电器的开闭。
作为优选,所述的步骤S5.3将功率瞬间增加时刻的电流变化点作为正瞬变点,将功率瞬间下降时刻的电流变化点作为负瞬变点,在进行调度前对此时刻之前的正瞬变点与负瞬变点进行匹配,若正瞬变点的功率瞬间增加量与负瞬变点的功率瞬间下降量接近,则判定为同一电器关闭,将仅存在正瞬变点的情况判定为该电器未关闭。
作为优选,所述的步骤S6通过宽带载波集中器接收指令后转成HPLC电力线载波层通道继续下发跳闸指令至宽带载波断路器,宽带载波断路器接收电力线路HPLC层的指令,当通讯地址与本身匹配时开始解析指令含义,最终得到切断用户负荷的命令后,立刻执行跳闸,跳闸完成后检测用户端负荷是否被真实切断,然后将跳闸结果反馈给控制端。
本发明的有益效果是:通过低压用户负荷曲线与电网负荷曲线之间峰值负荷时段的重合情况对用户空开资格进行判定,针对符合条件的用户进行协议邀约,并且在调控前针对用户具体用电情况实现非入侵式监测,从而针对用电情况实现智能调控的目的,及时的精准负荷控制和管理,释放灵活用电负荷,增强电网度峰能力,可大大缓解用电高峰时期负荷压力,达到削峰填谷,节能减排,提升设备利用率,减少输配电基建投入的效果。
附图说明
图1是本发明的一种的一次判断满足用户响应资格的波形图。
图2是本发明的一种的一次判断不满足用户响应资格的波形图。
图3是本发明的一种的二次判断满足用户响应资格的波形图。
图4是本发明的一种的二次判断不满足用户响应资格的波形图。
图5是本发明的一种电力参数变化折线图。
图6是本发明的一种电器开关电压电流波形图。
具体实施方式
下面通过实施例,并结合附图,对本发明的技术方案作进一步具体的说明。
实施例:本实施例的一种基于电力载波技术的能源多能融合调度方法,包括以下步骤:
S1判断用户响应资格,具体包括:
S1.1采集电网负荷曲线和低压用户负荷曲线;
S1.2对电网负荷曲线和低压用户负荷曲线进行归一化处理;
S1.3根据采集电网负荷曲线设定重合判断区间,设定重合判断区间包括:将电网负荷曲线的峰值Lmax的时刻Tmax作为基准点,在基准点Tmax前电网负荷上升时段依次取负荷上升时刻Tx1和Tx2,令
取电网负荷变化率Px最大时的上升tx1作为起始时刻;
在基准点Tmax后电网负荷下降时段依次取负荷下降时刻Ty1和Ty2,令
取电网负荷变化率Py最大时的下降Ty2作为结束时刻,将Lx1与LY2较小值作为横轴,较大值所在时刻作为纵轴,将Tx1与Ty2之间电网负荷曲线、横轴、纵轴构成的区域作为重合判断区间AT。
S1.4针对低压用户负荷曲线在重合判断区间的重合率判断用户响应资格,具体包括:进行一次判断,即判断低压用户负荷曲线与重合判断区间之间的总重合率θ1,如图1所示,若总重合率θ1≥80%,则认定为满足用户响应资格;如图2所示,若总重合率θ1≤40%,则认定为不满足用户响应资格;若总重合率40%<θ1<80%,则进行二次判断。
二次判断具体包括:取Tx1与Ty2之间低压用户负荷曲线的峰值时刻lmax的时刻tmax作为基准点,在基准点tmax前电网负荷上升时段依次取负荷上升时刻tx1和tx2,令
取电网负荷变化率Px最大时的上升tx1作为起始时刻;
在基准点Tmax后电网负荷下降时段依次取负荷下降时刻Ty1和Ty2,令
取电网负荷变化率py最大时的下降ty2作为结束时刻,将lx1与lY2较小值作为横轴,较大值所在时刻作为纵轴,将tx1与ty2之间电网负荷曲线、横轴、纵轴构成的区域作为低压用户区间At;
判断tx1与ty2之间的重合判断区间与低压用户区间At的重合率θ2,如图3所示,若重合率θ2≥80%,则认定为满足用户响应资格;如图4所示,若重合率θ2<80%,则认定为不满足用户响应资格。
S2与用户达成需求响应协定,需求响应协定包括预测邀约方式和套餐签约方式。
预测邀约方式,参与需求响应的用户用智能空开替代原来的普通空开(新小区等直接安装智能空开),入户电力线接入智能空开后,通过电力线宽带载波通讯(HPLC)自动实现与需求响应***的互联互通(与自动搜表原理相同,集中器自动搜索智能空开资产编号并与需求响应***通讯,建立智能空开的档案,自动匹配到户号下)。需求响应***根据电网历史日负荷曲线(或负荷数据),经过一系列预测算法,预测下一日负荷峰值时间段(例如18:00至20:00),并通过“网上国网APP”向低压用户发出该时间段的需求响应邀约,用户在手机上操作,确认参与响应,确认信息反馈给需求响应***。第二日响应时段开始(例如18:00),需求响应***发送分闸指令,给到用户所在台区的集中器(台区变压器二次侧),集中器收到指令后,通过电力线HPLC通讯,传输指令给智能空开,智能空开接收指令,进行跳闸操作,并在跳闸完成后反馈已跳闸信号给需求响应***。响应时段结束(例如20:00),同样的,需求响应***发送合闸指令,给到用户所在台区的集中器(台区变压器二次侧),集中器收到指令后,通过电力线HPLC通讯,传输指令给智能空开,智能空开接收指令,进行合闸操作,并在合闸完成后反馈已跳闸信号给需求响应***。
在响应期内,需求响应***可通过对用户参与响应后的负荷变化情况,和历史负荷使用规律进行比对,判断是否为有效响应,若为有效响应,则用户还可在网上国网APP上领取补贴。
套餐签约方式通过网上国网APP或营业厅等多种方式,与用户签订协议,用户根据自身需要,自愿选择参与响应的电器设备。参与响应的设备,供电企业可在响应时段内根据社会用电负荷情况,自由选择切断和送电时间,或每日在固定时间点切断和送电。
S3电力主站运营平台监测电力负荷状况,根据历史负荷判断,若响应时段内当前负荷加上套餐签约负荷达到历史量则立即开启预测邀约,并将具体数据传输至手持控制终端。
S4根据电力负载及需求响应量下达任务;
S5对用户实时用电状况进行非入侵式判定,具体包括:
S5.1通过安装在用户总输入端的电表实现对电力参数的监测并拟合电力参数曲线;
S5.2提取电力参数曲线中的瞬变电流值并进行判断,如图6所示,电力参数曲线中电流瞬间变化量超过设定阈值ΔI,则认定为非电流波动变化值,通过此时刻的电流和电压数据实现功率瞬间变化量的计算,通过功率瞬间变化量在总负载中的体现确定用户家中电器的开闭。
S5.3若瞬变电流值超过阈值,提取瞬变时刻电力参数变化构建正瞬变点和负瞬变点,将功率瞬间增加时刻的电流变化点作为正瞬变点,将功率瞬间下降时刻的电流变化点作为负瞬变点,在进行调度前对此时刻之前的正瞬变点与负瞬变点进行匹配,若正瞬变点的功率瞬间增加量与负瞬变点的功率瞬间下降量接近,则判定为同一电器关闭,将仅存在正瞬变点的情况判定为该电器未关闭如果对用户家中电器参数,如启动瞬间电流电压变化量进行登记,并预设不可断电的电器情况,能够针对性确定用户家中开启电器的种类并进行精确判断,避免断电对运行中的电器的损伤,造成安全隐患。
S5.4将瞬变点连接构成电力参数变化折线图,如图5所示;
S5.5在进行调度前对此时刻之前的正瞬变点与负瞬变点进行匹配实现对用户运行电器的判断。
S6通过宽带载波断路器实现电力负载调控。通过宽带载波集中器接收指令后转成HPLC电力线载波层通道继续下发跳闸指令至宽带载波断路器,宽带载波断路器接收电力线路HPLC层的指令,当通讯地址与本身匹配时开始解析指令含义,最终得到切断用户负荷的命令后,立刻执行跳闸,跳闸完成后检测用户端负荷是否被真实切断,然后将跳闸结果反馈给控制端。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代,但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。
尽管本文较多地使用了宽带载波断路器、宽带载波集中器等术语,但并不排除使用其它术语的可能性。使用这些术语仅仅是为了更方便地描述和解释本发明的本质;把它们解释成任何一种附加的限制都是与本发明精神相违背的。
Claims (10)
1.一种基于电力载波技术的能源多能融合调度方法,其特征在于,包括以下步骤:
S1判断用户响应资格;
S2与满足响应资格的用户达成需求响应协定;
S3电力主站运营平台监测电力负荷状况;
S4根据电力负载及需求响应量下达任务;
S5对用户实时用电状况进行非入侵式判定;
S6通过宽带载波断路器实现电力负载调控。
2.根据权利要求1所述的一种基于电力载波技术的能源多能融合调度***及方法,其特征在于,所述步骤S1判断用户响应资格具体包括:
S1.1采集电网负荷曲线和低压用户负荷曲线;
S1.2对电网负荷曲线和低压用户负荷曲线进行归一化处理;
S1.3根据采集电网负荷曲线设定重合判断区间;
S1.4针对低压用户负荷曲线在重合判断区间的重合率判断用户响应资格。
4.根据权利要求2所述的一种基于电力载波技术的能源多能融合调度***及方法,其特征在于,所述步骤1.4具体包括:进行一次判断,即判断低压用户负荷曲线与重合判断区间之间的总重合率θ1,若总重合率θ1≥80%,则认定为满足用户响应资格;若总重合率θ1≤40%,则认定为不满足用户响应资格;若总重合率40%<θ1<80%,则进行二次判断。
5.根据权利要求4所述的一种基于电力载波技术的能源多能融合调度***及方法,其特征在于,所述二次判断具体包括:取Tx1与Ty2之间低压用户负荷曲线的峰值时刻lmax的时刻tmax作为基准点,在基准点tmax前电网负荷上升时段依次取负荷上升时刻tx1和tx2,令
取电网负荷变化率Px最大时的上升tx1作为起始时刻;
在基准点Tmax后电网负荷下降时段依次取负荷下降时刻Ty1和Ty2,令
取电网负荷变化率py最大时的下降ty2作为结束时刻,将lx1与lY2较小值作为横轴,较大值所在时刻作为纵轴,将tx1与ty2之间电网负荷曲线、横轴、纵轴构成的区域作为低压用户区间At;
判断tx1与ty2之间的重合判断区间与低压用户区间At的重合率θ2,若重合率θ2≥80%,则认定为满足用户响应资格;若重合率θ2<80%,则认定为不满足用户响应资格。
6.根据权利要求1所述的一种基于电力载波技术的能源多能融合调度***及方法,其特征在于,所述步骤S2与用户达成需求响应协定包括预测邀约方式和套餐签约方式,所述预测邀约方式在响应时段前向低压用户发出该时间段的需求响应邀约,用户自行确认是否参与响应;所述套餐签约方式为用户根据自身需要,自愿选择参与响应的电器设备,供电企业在响应时段内根据社会用电负荷情况,自由选择切断和送电时间。
7.根据权利要求1所述的一种基于电力载波技术的能源多能融合调度***及方法,其特征在于,所述步骤S5对用户实时用电状况进行非入侵式判定具体包括:
S5.1通过安装在用户总输入端的电表实现对电力参数的监测并拟合电力参数曲线;
S5.2提取电力参数曲线中的瞬变电流值并进行判断;
S5.3若瞬变电流值超过阈值,提取瞬变时刻电力参数变化构建正瞬变点和负瞬变点;
S5.4将瞬变点连接构成电力参数变化折线图;
S5.5在进行调度前对此时刻之前的正瞬变点与负瞬变点进行匹配实现对用户运行电器的判断。
8.根据权利要求7所述的一种基于电力载波技术的能源多能融合调度***及方法,其特征在于,所述步骤S5.2电力参数曲线中电流瞬间变化量超过设定阈值ΔI,则认定为非电流波动变化值,通过此时刻的电流和电压数据实现功率瞬间变化量的计算,通过功率瞬间变化量在总负载中的体现确定用户家中电器的开闭。
9.根据权利要求7所述的一种基于电力载波技术的能源多能融合调度***及方法,其特征在于,所述步骤S5.3将功率瞬间增加时刻的电流变化点作为正瞬变点,将功率瞬间下降时刻的电流变化点作为负瞬变点,在进行调度前对此时刻之前的正瞬变点与负瞬变点进行匹配,若正瞬变点的功率瞬间增加量与负瞬变点的功率瞬间下降量接近,则判定为同一电器关闭,将仅存在正瞬变点的情况判定为该电器未关闭。
10.根据权利要求1所述的一种基于电力载波技术的能源多能融合调度***及方法,其特征在于,所述步骤S6通过宽带载波集中器接收指令后转成HPLC电力线载波层通道继续下发跳闸指令至宽带载波断路器,宽带载波断路器接收电力线路HPLC层的指令,当通讯地址与本身匹配时开始解析指令含义,最终得到切断用户负荷的命令后,立刻执行跳闸,跳闸完成后检测用户端负荷是否被真实切断,然后将跳闸结果反馈给控制端。
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