CN111244946B - Method and device for regulating and controlling power generation and utilization resources of self-contained power plant - Google Patents

Method and device for regulating and controlling power generation and utilization resources of self-contained power plant Download PDF

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CN111244946B
CN111244946B CN202010098270.6A CN202010098270A CN111244946B CN 111244946 B CN111244946 B CN 111244946B CN 202010098270 A CN202010098270 A CN 202010098270A CN 111244946 B CN111244946 B CN 111244946B
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power plant
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CN111244946A (en
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杨梓俊
李小荣
孙勇
于芮技
宋杰
邵军军
郑红娟
纪程
黄怡凡
高赐威
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State Grid Corp of China SGCC
Southeast University
State Grid Jiangsu Electric Power Co Ltd
NARI Group Corp
Nari Technology Co Ltd
NARI Nanjing Control System Co Ltd
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State Grid Corp of China SGCC
Southeast University
State Grid Jiangsu Electric Power Co Ltd
NARI Group Corp
Nari Technology Co Ltd
NARI Nanjing Control System Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers

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Abstract

本发明公开了一种自备电厂发用电资源的调控方法和装置，通过预先构建的自备电厂发电机组出力的调节能耗模型和响应模型、企业用电侧可调节负荷的调节能耗模型和响应模型、储能装置的调节能耗模型和响应模型，得到自备电厂单位调节能耗模型、自备电厂的总响应模型和自备电厂总响应次数，以自备电厂发用电资源调节能耗最小、响应时间最短、响应次数最少为优化目标，求解最优的发用电资源调控策略。本发明综合考虑自备电厂的可调节发用电资源包括发电机、可调节负荷和储能装置，将三者等效为整体参与需求响应，充分挖掘了自备电厂的需求响应潜力，显著地减轻了电网调峰负担。

Figure 202010098270

The invention discloses a control method and device for power generation and consumption resources of a self-provided power plant. The energy consumption model and response model for adjusting the output of the generator set of the self-provided power plant and the energy consumption model for adjusting the load on the power consumption side of the enterprise are pre-built. And the response model, the regulation energy consumption model and response model of the energy storage device, the unit regulation energy consumption model of the self-provided power plant, the total response model of the captive power plant, and the total response times of the captive power plant are obtained. The minimum energy consumption, the shortest response time, and the minimum number of responses are the optimization objectives, and the optimal regulation strategy of power generation and consumption resources is solved. The invention comprehensively considers the adjustable power generation and consumption resources of the self-provided power plant, including the generator, the adjustable load and the energy storage device, and equalizes the three to participate in the demand response as a whole, fully taps the demand response potential of the self-provided power plant, and significantly The burden of peak regulation of the power grid is reduced.

Figure 202010098270

Description

一种自备电厂发用电资源的调控方法和装置A method and device for regulating and controlling power generation and consumption resources of a self-provided power plant

技术领域technical field

本发明属于电力系统及其自动化技术领域，特别涉及了一种自备电厂发用电资源的调控方法和装置。The invention belongs to the technical field of electric power systems and automation thereof, and particularly relates to a method and a device for regulating and controlling power generation and consumption resources of self-provided power plants.

背景技术Background technique

自备电厂是指企业为满足自身用电需求建造的发电厂。自备电厂按照满足本单位生产需要的准则进行发电，自用不足时则向电网购买部分电力。与之相对的是公用电厂，即为公众提供电力的发电厂。现行的自备电厂管理模式和手段已无法满足新形势下对自备电厂规范管理和灵活参与交易的相关要求，亟需进一步从技术上探索自备电厂在新市场环境下参与需求响应调峰、新能源消纳等领域的功能实现，提出可具操作性的方法。同时，企业自备电厂能够促进提升社会整体资源的综合利用效率，国网公司经营范围内自备电厂装机达9000万千瓦以上，是一种重要的提升电网运行灵活性资源。由此可见，自备电厂是一种调节潜力巨大的需求响应资源，由于其发用电一体化的特殊性，适用于常规电厂和常规负荷的调控方法并不适用于自备电厂，因此需要提出一种自备电厂发用电资源的调控方法。Captive power plants refer to power plants built by enterprises to meet their own electricity needs. The self-provided power plant generates electricity according to the criteria that meets the production needs of the unit, and purchases part of the electricity from the grid when the self-consumption is insufficient. The opposite is a utility power plant, a power plant that provides electricity to the public. The current management mode and means of self-contained power plants can no longer meet the relevant requirements for standardized management of self-contained power plants and flexible participation in transactions under the new situation. Function realization in the fields of new energy consumption and other fields, and put forward operability methods. At the same time, enterprise-owned power plants can promote the comprehensive utilization efficiency of the overall social resources. The installed capacity of self-provided power plants within the scope of State Grid Corporation’s operation reaches more than 90 million kilowatts, which is an important resource for improving the flexibility of power grid operation. It can be seen that the self-contained power plant is a demand response resource with huge adjustment potential. Due to the particularity of its power generation and electricity integration, the control methods suitable for conventional power plants and conventional loads are not suitable for self-contained power plants. Therefore, it is necessary to propose A method for regulating and controlling power generation and consumption resources of a self-provided power plant.

发明内容SUMMARY OF THE INVENTION

为了解决上述背景技术提到的技术问题，本发明提出了一种自备电厂发用电资源的调控方法和装置，在考虑各技术条件约束的情况下将自备电厂的各个发用电资源等效为一个整体，应对电网的不同需求给出相应的调控方案。In order to solve the technical problems mentioned in the above background technology, the present invention proposes a method and device for regulating the power generation and consumption resources of a self-provided power plant. The efficiency is a whole, and corresponding control schemes are given to meet the different needs of the power grid.

为了实现上述技术目的，本发明的技术方案为：一种自备电厂发用电资源的调控方法，包括以下步骤：In order to achieve the above technical purpose, the technical scheme of the present invention is: a method for regulating and controlling power generation and consumption resources of a self-provided power plant, comprising the following steps:

通过预先构建的自备电厂发电机组出力的调节能耗模型和响应模型、企业用电侧可调节负荷的调节能耗模型和响应模型、储能装置的调节能耗模型和响应模型，得到自备电厂单位调节能耗模型、自备电厂的总响应模型和自备电厂总响应次数，以自备电厂发用电资源调节能耗最小、响应时间最短、响应次数最少为优化目标，求解最优的发用电资源调控策略。Through the pre-built adjustment energy consumption model and response model of the output of the generator set of the self-contained power plant, the adjustment energy consumption model and response model of the adjustable load of the enterprise power consumption side, and the adjustment energy consumption model and response model of the energy storage device, the self-supplied energy consumption model and response model are obtained. The unit adjustment energy consumption model of the power plant, the total response model of the self-provided power plant, and the total response times of the self-provided power plant, take the minimum energy consumption, the shortest response time, and the least number of responses as the optimization objectives of the self-provided power plant’s power generation resources to solve the optimal Power generation resource regulation strategy.

进一步的，所述自备电厂发电机组出力的调节能耗模型为：Further, the energy consumption model for adjusting the output of the generator set in the self-provided power plant is:

Figure GDA0002451069240000021
Figure GDA0002451069240000021

CG[i]＝Czi+Cri+Cwi CG[i]=C zi +C ri +C wi

Czi＝C0 C zi =C 0

Figure GDA0002451069240000022
Figure GDA0002451069240000022

Cwi＝KwipGit C wi = K wi p Git

Figure GDA0002451069240000023
Figure GDA0002451069240000023

其中：CG为自备电厂发电机组总出力调节能耗，CG[i]为自备电厂发电机组i的出力调节能耗，xi为自备电厂发电机i的工作状态，pGit为自备电厂发电机组i出力的功率大小，γi为单位出力的调节能耗，Czi为自备电厂发电机组i的初期建造能耗，C0表示初期建造能耗，Cri为自备电厂发电机组i的机组运行能耗，ai、bi、ci为自备电厂发电机组i的能源消耗系数，Cwi为自备电厂发电机组i的运行维护能耗，Kwi为自备电厂发电机组i的运行维护系数；Among them: CG is the total output regulation energy consumption of the self-provided power plant generator set, CG[i] is the output regulation energy consumption of the self-provided power plant generator set i, xi is the working state of the self-provided power plant generator i, p Git is the self-provided power plant generator i The power output of the generator set i in the power plant, γ i is the adjustment energy consumption per unit output, C zi is the initial construction energy consumption of the self-provided power plant generator set i, C 0 represents the initial construction energy consumption, and C ri is the self-provided power plant generator set The operating energy consumption of the unit i, a i , b i , and c i are the energy consumption coefficients of the self-provided power plant generator set i, C wi is the operation and maintenance energy consumption of the self-provided power plant generator set i, and K wi is the self-provided power plant generator set The operation and maintenance coefficient of i;

约束条件如下：The constraints are as follows:

机组出力向上调节时表示如下：When the output of the unit is adjusted upward, it is expressed as follows:

pGi(t+1)-pGit≤URi p Gi(t+1) -p Git ≤UR i

机组出力向下调节时表示如下：When the output of the unit is adjusted downward, it is expressed as follows:

pGit-pGi(t+1)≤DRi p Git -p Gi(t+1) ≤DR i

机组最大、最小出力的约束：Constraints on the maximum and minimum output of the unit:

Figure GDA0002451069240000031
Figure GDA0002451069240000031

其中：URi为自备电厂发电机组i向上最大爬坡速率，DRi为自备电厂发电机组i向下最大爬坡速率，pGit为自备电厂发电机组i在t时刻的出力，pGi(t+1)为自备电厂发电机组i在t+1时刻的出力，

Figure GDA0002451069240000032
为自备电厂发电机组i在t时刻的最小出力，
Figure GDA0002451069240000033
为自备电厂发电机组i在t时刻的最大出力；Among them: UR i is the maximum upward ramp rate of the generator set i of the self-provided power plant, DR i is the maximum downward slope rate of the generator set i of the self-provided power plant, p Git is the output of the generator set i of the self-provided power plant at time t, p Gi (t+1) is the output of the generator set i of the self-provided power plant at time t+1,
Figure GDA0002451069240000032
is the minimum output of the generator set i of the self-provided power plant at time t,
Figure GDA0002451069240000033
is the maximum output of the generator set i of the self-provided power plant at time t;

自备电厂发电机组需求响应时间模型为：The demand response time model of the generator set in the self-contained power plant is:

Figure GDA0002451069240000034
Figure GDA0002451069240000034

Figure GDA0002451069240000035
Figure GDA0002451069240000035

DRi≤Ri≤URi DR i ≤R i ≤UR i

上式中，

Figure GDA0002451069240000036
为发电机组i的出力界限，Ri为发电机组i的爬坡速率，τi为发电机组i的响应时间。In the above formula,
Figure GDA0002451069240000036
is the output limit of generator set i, R i is the ramp rate of generator set i, and τ i is the response time of generator set i.

进一步的，所述企业用电侧可调节负荷的调节能耗模型为：Further, the adjustment energy consumption model of the adjustable load on the power consumption side of the enterprise is:

Figure GDA0002451069240000037
Figure GDA0002451069240000037

CL[j]＝kjtμt(pj(t+1)-pjt)2·Δtj CL[j]=k jt μ t (p j(t+1) -p jt ) 2 ·Δt j

Figure GDA0002451069240000038
Figure GDA0002451069240000038

Figure GDA0002451069240000039
Figure GDA0002451069240000039

其中：j为可控负荷的编号，j＝1,2…,m，m为可控负荷总数，CL[j]为可控负荷j调节后因为工序调整、设备运行状态波动带来的调节能耗，pjt为t时刻可控负荷j的容量大小，pj(t+1)为t+1时刻可控负荷j调节后的容量大小，γj为可控负荷单位功率的调节能耗，kjt为t时刻参与调节的负荷比例，μt为时间影响因子，可控负荷参与调节时，若将负荷运行时间提前，则定义

Figure GDA0002451069240000041
描述可控负荷j的超前时间，若将负荷运行时间挪后，则定义
Figure GDA0002451069240000042
描述可控负荷j的滞后时间，Δtj为可控负荷j调节时间跨度，TSj为负荷起始工作时刻，TEj为可控负荷j结束工作时间，T表示时段；Among them: j is the number of the controllable load, j=1,2...,m, m is the total number of controllable loads, CL[j] is the adjustment energy caused by the adjustment of the controllable load j after the adjustment of the process and the fluctuation of the operating state of the equipment power consumption, p jt is the capacity of the controllable load j at time t, p j(t+1) is the adjusted capacity of the controllable load j at time t+1, γ j is the adjusted energy consumption per unit power of the controllable load, k jt is the load proportion participating in the adjustment at time t, μ t is the time influence factor, when the controllable load participates in the adjustment, if the load running time is advanced, the definition
Figure GDA0002451069240000041
Describes the lead time of the controllable load j. If the load running time is moved back, the definition
Figure GDA0002451069240000042
Describe the lag time of the controllable load j, Δt j is the adjustment time span of the controllable load j, TS j is the starting working time of the load, TE j is the end working time of the controllable load j, and T is the time period;

可调节负荷的响应模型为：The response model of the adjustable load is:

Figure GDA0002451069240000043
Figure GDA0002451069240000043

其中：k为可控负荷j中的用电设备的编号，k＝1,2,…,p，p为用电设备总数，τj为可控负荷的响应时间，

Figure GDA0002451069240000044
为可控负荷j中第k个用电设备的需求响应时间，
Figure GDA0002451069240000045
为可控负荷j中第p个用电设备的需求响应时间。Where: k is the number of the electrical equipment in the controllable load j, k=1,2,...,p, p is the total number of electrical equipment, τ j is the response time of the controllable load,
Figure GDA0002451069240000044
is the demand response time of the kth electrical equipment in the controllable load j,
Figure GDA0002451069240000045
is the demand response time of the p-th electrical equipment in the controllable load j.

进一步的，所述储能装置的调节能耗模型为：Further, the regulation energy consumption model of the energy storage device is:

Figure GDA0002451069240000046
Figure GDA0002451069240000046

其中，ps为储能装置功率大小，γs为单位储能功率的调节能耗，ks为储能装置折旧系数，γp为功率能耗系数γc为容量能耗系数，

Figure GDA0002451069240000047
为储能容量上限；Among them, p s is the power of the energy storage device, γ s is the adjustment energy consumption per unit of energy storage power, k s is the depreciation coefficient of the energy storage device, γ p is the power consumption coefficient, γ c is the capacity energy consumption coefficient,
Figure GDA0002451069240000047
is the upper limit of the energy storage capacity;

储能装置容量大小的约束：Constraints on the capacity of the energy storage device:

Figure GDA0002451069240000048
Figure GDA0002451069240000048

其中，

Figure GDA0002451069240000049
为储能装置的最大功率；in,
Figure GDA0002451069240000049
is the maximum power of the energy storage device;

储能装置的响应时间模型为：The response time model of the energy storage device is:

Figure GDA0002451069240000051
Figure GDA0002451069240000051

其中，τs为储能装置的响应时间，τq为第q次响应的响应时间，响应次数为n。Among them, τ s is the response time of the energy storage device, τ q is the response time of the qth response, and the number of responses is n.

进一步的，自备电厂单位调节能耗模型γT为：Further, the unit regulation energy consumption model γ T of the self-provided power plant is:

Figure GDA0002451069240000052
Figure GDA0002451069240000052

其中：

Figure GDA0002451069240000053
分别为调节前的发电机组、可控负荷开关状态，
Figure GDA0002451069240000054
分别为调节后的发电机组、可控负荷开关状态，PT为综合考虑机组出力、用电负荷和储能装置得到的自备电厂等效负荷，
Figure GDA0002451069240000055
为调节前储能的充放电功率，
Figure GDA0002451069240000056
为调节后储能的充放电功率，pjt为t时刻可控负荷j的容量大小；in:
Figure GDA0002451069240000053
are the status of the generator set and controllable load switch before adjustment, respectively,
Figure GDA0002451069240000054
are the on-off states of the adjusted generator set and the controllable load, respectively, P T is the equivalent load of the self-provided power plant obtained by comprehensively considering the output of the unit, the electricity load and the energy storage device,
Figure GDA0002451069240000055
In order to adjust the charging and discharging power of the former energy storage,
Figure GDA0002451069240000056
is the charge and discharge power of the adjusted energy storage, p jt is the capacity of the controllable load j at time t;

自备电厂的总响应时间模型τT为：The total response time model τ T of the captive power plant is:

Figure GDA0002451069240000057
Figure GDA0002451069240000057

其中：

Figure GDA0002451069240000058
为调节前储能装置的开关状态，
Figure GDA0002451069240000059
为调节后储能装置的开关状态；in:
Figure GDA0002451069240000058
In order to adjust the switching state of the front energy storage device,
Figure GDA0002451069240000059
is the switching state of the energy storage device after adjustment;

自备电厂总响应次数Jnum：Total response times J num of the self-provided power plant:

Figure GDA00024510692400000510
Figure GDA00024510692400000510

自备电厂发用电资源调节能耗CT为：The energy consumption CT of the self-provided power plant’s power generation resource adjustment is:

Figure GDA00024510692400000511
Figure GDA00024510692400000511

进一步的，以自备电厂发用电资源调节能耗最小、响应时间最短、响应次数最少为优化目标，求解最优的发用电资源调控策略，具体为：Further, taking the minimum energy consumption, the shortest response time, and the least number of responses as the optimization goals for the self-provided power plant’s power generation resource regulation, the optimal power generation resource regulation strategy is solved, specifically:

Figure GDA0002451069240000061
Figure GDA0002451069240000061

Figure GDA0002451069240000062
Figure GDA0002451069240000062

Figure GDA0002451069240000063
Figure GDA0002451069240000063

约束条件如下：The constraints are as follows:

Figure GDA0002451069240000064
Figure GDA0002451069240000064

Figure GDA0002451069240000065
Figure GDA0002451069240000065

pGi(t+1)-pGit≤URi p Gi(t+1) -p Git ≤UR i

pGit-pGi(t+1)≤DRi p Git -p Gi(t+1) ≤DR i

DRi≤Ri≤URi DR i ≤R i ≤UR i

Figure GDA0002451069240000066
Figure GDA0002451069240000066

根据给出的目标函数和约束条件，求解得到最优的自备电厂发用电资源调节策略。According to the given objective function and constraints, the optimal regulation strategy of the power generation and consumption resources of the self-provided power plant is obtained.

一种自备电厂发用电资源的调控装置，包括：A control device for power generation and consumption resources of a self-provided power plant, comprising:

自备电厂单位调节能耗模型、总响应模型和总响应次数计算模块，用于通过预先构建的自备电厂发电机组出力的调节能耗模型和响应模型、企业用电侧可调节负荷的调节能耗模型和响应模型、储能装置的调节能耗模型和响应模型，得到自备电厂单位调节能耗模型、自备电厂的总响应模型和自备电厂总响应次数；The unit adjustment energy consumption model, total response model and total response times calculation module of the self-provided power plant are used to adjust the energy consumption model and response model of the output of the generator set of the self-provided power plant, and the adjustment energy of the adjustable load on the power consumption side of the enterprise. energy consumption model and response model, regulation energy consumption model and response model of the energy storage device, and obtain the unit regulation energy consumption model of the captive power plant, the total response model of the captive power plant and the total response times of the captive power plant;

自备电厂发用电资源最优调控策略求解模块，用于以自备电厂发用电资源调节能耗最小、响应时间最短、响应次数最少为优化目标，求解最优的自备电厂发用电资源调控策略。The module for solving the optimal regulation strategy of the power generation resources of the self-provided power plant is used to solve the optimal power generation and consumption of the self-provided power plant with the minimum energy consumption, the shortest response time, and the least number of responses as the optimization goals. Resource control strategy.

进一步的，自备电厂单位调节能耗模型γT为：Further, the unit regulation energy consumption model γ T of the self-provided power plant is:

Figure GDA0002451069240000071
Figure GDA0002451069240000071

其中：

Figure GDA0002451069240000072
分别为调节前的发电机组、可控负荷开关状态，
Figure GDA0002451069240000073
分别为调节后的发电机组、可控负荷开关状态，
Figure GDA0002451069240000074
为调节前储能的充放电功率，
Figure GDA0002451069240000075
为调节后储能的充放电功率；in:
Figure GDA0002451069240000072
are the status of the generator set and controllable load switch before adjustment, respectively,
Figure GDA0002451069240000073
are the adjusted generator set and controllable load switch states, respectively,
Figure GDA0002451069240000074
In order to adjust the charging and discharging power of the former energy storage,
Figure GDA0002451069240000075
is the charge and discharge power of the adjusted energy storage;

自备电厂的总响应模型τT为：The total response model τ T of the captive power plant is:

Figure GDA0002451069240000076
Figure GDA0002451069240000076

其中：

Figure GDA0002451069240000077
为调节前储能装置的开关状态，
Figure GDA0002451069240000078
为调节后储能装置的开关状态；in:
Figure GDA0002451069240000077
In order to adjust the switching state of the front energy storage device,
Figure GDA0002451069240000078
is the switching state of the energy storage device after adjustment;

自备电厂总响应次数Jnum：Total response times J num of the self-provided power plant:

Figure GDA0002451069240000079
Figure GDA0002451069240000079

自备电厂发用电资源调节能耗CT为：The energy consumption CT of the self-provided power plant’s power generation resource adjustment is:

Figure GDA00024510692400000710
Figure GDA00024510692400000710

进一步的，以自备电厂发用电资源调节能耗最小、响应时间最短、响应次数最少为优化目标，求解最优的发用电资源调控策略，具体为：Further, taking the minimum energy consumption, the shortest response time, and the least number of responses as the optimization goals for the self-provided power plant’s power generation resource regulation, the optimal power generation resource regulation strategy is solved, specifically:

Figure GDA00024510692400000711
Figure GDA00024510692400000711

Figure GDA00024510692400000712
Figure GDA00024510692400000712

Figure GDA00024510692400000713
Figure GDA00024510692400000713

约束条件如下：The constraints are as follows:

Figure GDA00024510692400000714
Figure GDA00024510692400000714

Figure GDA00024510692400000715
Figure GDA00024510692400000715

pGi(t+1)-pGit≤URi p Gi(t+1) -p Git ≤UR i

pGit-pGi(t+1)≤DRi p Git -p Gi(t+1) ≤DR i

DRi≤Ri≤URi DR i ≤R i ≤UR i

Figure GDA0002451069240000081
Figure GDA0002451069240000081

根据给出的目标函数和约束条件，求解得到最优的自备电厂发用电资源调节策略。According to the given objective function and constraints, the optimal regulation strategy of the power generation and consumption resources of the self-provided power plant is obtained.

本发明的有益效果：Beneficial effects of the present invention:

本发明构建了发电机出力、可控负荷、储能装置的调节能耗、响应模型，在此基础上，求解多目标优化问题得到最优策略，保证了自备电厂发用电资源响应的快速性和高效性。本发明将自备电厂发用电资源等效为一个整体，在满足各技术条件约束的情况下给出最优调控方法，充分挖掘自备电厂发用电资源的调节潜力。The invention constructs the generator output, controllable load, energy storage device regulation energy consumption and response model, and on this basis, solves the multi-objective optimization problem to obtain the optimal strategy, which ensures the rapid response of the power generation and consumption resources of the self-provided power plant. sex and efficiency. The invention treats the power generation and consumption resources of the self-provided power plant as a whole, and provides an optimal regulation method under the condition that the constraints of various technical conditions are satisfied, so as to fully tap the regulation potential of the power generation and consumption resources of the self-provided power plant.

附图说明Description of drawings

图1为本发明的方法流程图；Fig. 1 is the method flow chart of the present invention;

图2为发电机组出力约束模型图；Figure 2 is a model diagram of the output constraint of the generator set;

图3为自备电厂发用电资源分类图；Figure 3 is a classification diagram of the power generation and consumption resources of the self-provided power plant;

具体实施方式Detailed ways

以下将结合附图，对本发明的技术方案进行详细说明。The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.

实施例1：Example 1:

如图1所示，本发明的一种自备电厂发用电资源的调控方法，步骤如下：As shown in Figure 1, the control method of a kind of self-provided power plant power generation resource of the present invention, the steps are as follows:

步骤1、在自备电厂发电侧，基于自备电厂中多类型发电机组的特性，构建发电机组出力的调节能耗模型和响应模型；Step 1. On the power generation side of the self-provided power plant, based on the characteristics of the multi-type generator sets in the self-provided power plant, construct an energy consumption model and a response model for adjusting the output of the generator set;

步骤2、在所属企业用电侧，基于企业生产工序特点分析不同用电环节的可调节性，构建可调节负荷的调节能耗模型和响应模型；Step 2. On the power consumption side of the affiliated enterprise, based on the characteristics of the production process of the enterprise, analyze the adjustability of different power consumption links, and build a regulation energy consumption model and a response model for the adjustable load;

步骤3、从所属企业储能角度，基于储能装置的类型和性能构建储能装置的调节能耗模型和响应模型；Step 3. From the perspective of energy storage of the affiliated enterprise, build a regulation energy consumption model and a response model of the energy storage device based on the type and performance of the energy storage device;

步骤4、以自备电厂发用电资源调节能耗最小、响应时间最短、响应次数最少为优化目标，求解最优的发用电资源调控策略。Step 4: Taking the minimum energy consumption, the shortest response time, and the minimum number of responses as the optimization goals of the self-provided power plant for the regulation of the power generation and consumption resources, the optimal regulation strategy of the power generation and consumption resources is solved.

在本实施例中，上述步骤1采用如下优选方案实现：In the present embodiment, the above-mentioned step 1 is implemented by the following preferred solutions:

1-1、建立发电机组出力的调节能耗模型：1-1. Establish an energy consumption model for adjusting the output of the generator set:

自备电厂发电资源主要包括自备电厂燃煤机组发电、自备电厂热电联产机组发电、自备电厂余热余压机组发电。根据自然资源的特征，有些自然资源具有一次消耗性质，如不可再生的矿产资源、部分可再生的森林资源和水资源，这些资源的使用具有中间消耗的性质，发电机组运行所消耗的资源主要为煤炭、水。由此，可将发电机组的发电能耗主要分为初期建造能耗、机组运行能耗和运行维护能耗。假定自备电厂中包含n个发电机组，每个发电机组的编号为i，则建立发电机组出力的调节能耗模型如下：The power generation resources of the self-provided power plant mainly include the power generation of the coal-fired unit of the self-provided power plant, the power generation of the cogeneration unit of the self-provided power plant, and the power generation of the waste heat and pressure generating unit of the self-provided power plant. According to the characteristics of natural resources, some natural resources have the nature of one-time consumption, such as non-renewable mineral resources, partially renewable forest resources and water resources. The use of these resources has the nature of intermediate consumption. The resources consumed by the operation of the generator set are mainly coal, water. Therefore, the power generation energy consumption of the generator set can be mainly divided into the initial construction energy consumption, the unit operation energy consumption and the operation and maintenance energy consumption. Assuming that there are n generator sets in the self-provided power plant, and the number of each generator set is i, the energy consumption model for regulating the output of the generator set is established as follows:

CG[i]＝Czi+Cri+Cwi (1)CG[i]=C zi +C ri +C wi (1)

Czi＝C0 (2)C zi =C 0 (2)

Figure GDA0002451069240000091
Figure GDA0002451069240000091

Cwi＝KwipGit (4)C wi = K wi p Git (4)

Figure GDA0002451069240000092
Figure GDA0002451069240000092

Figure GDA0002451069240000093
Figure GDA0002451069240000093

其中：CG为自备电厂发电机组总出力调节能耗，CG[i]为自备电厂发电机组i的出力调节能耗，xi为自备电厂发电机i的工作状态，1为发电机正常运行，0为发电机关停状态，pGit为自备电厂发电机组i出力的功率大小，γi为单位出力的调节能耗，Czi为自备电厂发电机组i的初期建造能耗，由自备电厂规模、装机容量、机组类型等因素决定，式中用C0表示初期建造能耗。Cri为自备电厂发电机组i的机组运行能耗，与机组的实时出力有关，ai、bi、ci为自备电厂发电机组i的能源消耗系数。Cwi为自备电厂发电机组i的运行维护能耗，该能耗由机组的使用时长、使用方式决定，Kwi为自备电厂发电机组i的运行维护系数。Among them: CG is the total output regulation energy consumption of the self-provided power plant generator set, CG[i] is the output regulation energy consumption of the self-provided power plant generator set i, x i is the working state of the self-provided power plant generator i, and 1 means the generator is normal Running, 0 is the shutdown state of the generator, p Git is the output power of the generator set i of the self-provided power plant, γ i is the adjustment energy consumption per unit output, C zi is the initial construction energy consumption of the generator set i of the self-provided power plant, which is determined by the It is determined by factors such as the scale of the standby power plant, the installed capacity, and the type of the unit. In the formula, C 0 is used to represent the initial construction energy consumption. C ri is the operating energy consumption of the generator set i of the self-provided power plant, which is related to the real-time output of the set, and a i , b i , and c i are the energy consumption coefficients of the generator set i of the self-provided power plant. C wi is the operation and maintenance energy consumption of the generator set i of the self-provided power plant, which is determined by the operating time and mode of use of the set, and K wi is the operation and maintenance coefficient of the generator set i of the self-provided power plant.

1-2、发电机出力的约束条件：1-2. Constraints on generator output:

为保持功率实时平衡，当公用电网功率波动导致系统出现功率盈余或缺额时，在其出力范围内自备电厂机组可提供向上或向下的灵活性资源，约束条件可表示如下：In order to maintain the real-time balance of power, when the power fluctuation of the utility grid causes the power surplus or shortage of the system, the self-provided power plant unit can provide upward or downward flexible resources within its output range, and the constraints can be expressed as follows:

pGi(t+1)-pGit≤URi (7)p Gi(t+1) -p Git ≤UR i (7)

pGit-pGi(t+1)≤DRi (8)p Git -p Gi(t+1) ≤DR i (8)

Figure GDA0002451069240000101
Figure GDA0002451069240000101

其中：URi为自备电厂发电机组i向上最大爬坡速率，DRi为自备电厂发电机组i向下最大爬坡速率，pGit为自备电厂发电机组i在t时刻的出力，pGi(t+1)为自备电厂发电机组i在t+1时刻的出力，

Figure GDA0002451069240000102
为自备电厂发电机i最小出力，
Figure GDA0002451069240000103
为自备电厂发电机i最大出力。Among them: UR i is the maximum upward ramp rate of the generator set i of the self-provided power plant, DR i is the maximum downward slope rate of the generator set i of the self-provided power plant, p Git is the output of the generator set i of the self-provided power plant at time t, p Gi (t+1) is the output of the generator set i of the self-provided power plant at time t+1,
Figure GDA0002451069240000102
For the minimum output of the generator i of the self-provided power plant,
Figure GDA0002451069240000103
Maximum output for the generator i of the self-provided power plant.

自备电厂发电机组出力的调节能耗模型的约束条件如图2所示，可以发现点A在向上调节时的上限为机组最大出力，点B在向上调节时的上限为机组向上爬坡上限，点C在向下调节时的下限为机组向下爬坡下限，点D在向下调节时的下限为机组最小出力。The constraints of the energy consumption model for adjusting the output of the generator set in the self-provided power plant are shown in Figure 2. It can be found that the upper limit of the point A during upward adjustment is the maximum output of the unit, and the upper limit of point B during the upward adjustment is the upper limit of the upward slope of the unit. The lower limit of point C during downward adjustment is the lower limit of the unit's downward slope, and the lower limit of point D during downward adjustment is the minimum output of the unit.

1-3、建立发电机需求响应时间模型：1-3. Establish a generator demand response time model:

Figure GDA0002451069240000104
Figure GDA0002451069240000104

Figure GDA0002451069240000111
Figure GDA0002451069240000111

DRi≤Ri≤URi (12)DR i ≤R i ≤UR i (12)

其中：

Figure GDA0002451069240000112
为发电机组i的出力界限，Ri为发电机组i的爬坡速率，τi为发电机i的响应时间。in:
Figure GDA0002451069240000112
is the output limit of generator set i, R i is the ramp rate of generator set i, and τ i is the response time of generator i.

根据式(6)、(10)确定自备电厂在参与需求响应过程中发电机单位出力的调节能耗和响应时间的模型，并考虑发电机出力在实际调节过程中的约束条件，包括式(7)、(8)、(9)、(12)。According to equations (6) and (10), the model of the energy consumption and response time for the regulation of the unit output of the generator in the process of participating in the demand response of the self-provided power plant is determined, and the constraints of the generator output in the actual regulation process are considered, including equation ( 7), (8), (9), (12).

在本实施例中，上述步骤2采用如下优选方案实现：In the present embodiment, above-mentioned step 2 adopts the following preferred scheme to realize:

2-1、建立可控负荷调节能耗模型：2-1. Establish a controllable load regulation energy consumption model:

在用电设备中电能被转换成机械能、热能、光能、声能或化学能，以达到特定目的。拥有自备电厂的企业负荷侧的用电设备包括电动机、电力照明、电炉、电焊、电解设备，这些用电设备根据是否可以调节分为可控负荷和不可控负荷两种，不可控负荷属于消耗灵活性资源的类型，因此该类负荷可提供的调节容量为零，而可控负荷则可以主动响应外界功率波动，即供给可调节容量，可控负荷和用电侧的“常规电源”类似，能够在一定功率范围内调节，从而配合电网的实时需求。In electrical equipment, electrical energy is converted into mechanical energy, thermal energy, light energy, sound energy or chemical energy to achieve specific purposes. The electrical equipment on the load side of enterprises with self-provided power plants includes electric motors, electric lighting, electric furnaces, electric welding, and electrolysis equipment. These electrical equipment can be divided into controllable loads and uncontrollable loads according to whether they can be adjusted. Uncontrollable loads are consumption. The type of flexible resources, so this type of load can provide zero adjustment capacity, while the controllable load can actively respond to external power fluctuations, that is, supply adjustable capacity. The controllable load is similar to the "conventional power supply" on the electricity side. It can be adjusted within a certain power range to meet the real-time demand of the power grid.

在自备电厂中进行可控负荷调节时需要满足当日企业总产量不变，因此根据自备电厂所属企业的生产流程确定不同用电环节的可调节容量，假定企业生产过程中包含m个可控负荷，每个可控负荷的编号为j，则可控负荷调节能耗模型可表示如下：In the controllable load adjustment in the self-provided power plant, the total output of the enterprise on the day needs to remain unchanged. Therefore, the adjustable capacity of different power consumption links is determined according to the production process of the enterprise to which the self-provided power plant belongs. It is assumed that the production process of the enterprise contains m controllable load, the number of each controllable load is j, then the controllable load regulation energy consumption model can be expressed as follows:

CL[j]＝kjtμt(pj(t+1)-pjt)2·Δtj (13)CL[j]=k jt μ t (p j(t+1) -p jt ) 2 ·Δt j (13)

Figure GDA0002451069240000113
Figure GDA0002451069240000113

Figure GDA0002451069240000121
Figure GDA0002451069240000121

Figure GDA0002451069240000122
Figure GDA0002451069240000122

其中：j为可控负荷的编号，j＝1,2…,m，m为可控负荷总数，CL[j]为可控负荷j调节后因为工序调整、设备运行状态波动带来的技术调节能耗，pjt为t时刻可控负荷j的容量大小，pj(t+1)为t+1时刻可控负荷j调节后的容量大小，γj为可控负荷单位功率带来的调节能耗，kjt为t时刻参与调节的负荷比例，μt为时间影响因子，可控负荷参与调节时，若将负荷运行时间提前，则定义

Figure GDA0002451069240000123
描述可控负荷j的超前时间，若将负荷运行时间挪后，则定义
Figure GDA0002451069240000124
描述可控负荷j的滞后时间，Δtj为可控负荷j调节时间跨度，TSj为负荷起始工作时刻，TEj为可控负荷j结束工作时间，T表示时段，一天24个小时。Among them: j is the number of the controllable load, j=1,2...,m, m is the total number of controllable loads, CL[j] is the technical adjustment caused by the process adjustment and equipment operating state fluctuation after the adjustment of the controllable load j Energy consumption, p jt is the capacity of the controllable load j at time t, p j(t+1) is the adjusted capacity of the controllable load j at time t+1, γ j is the adjustment brought by the unit power of the controllable load Energy consumption, k jt is the load proportion participating in the adjustment at time t, μ t is the time influence factor, when the controllable load participates in the adjustment, if the load running time is advanced, the definition
Figure GDA0002451069240000123
Describes the lead time of the controllable load j. If the load running time is moved back, the definition
Figure GDA0002451069240000124
Describe the lag time of the controllable load j, Δt j is the adjustment time span of the controllable load j, TS j is the starting working time of the load, TE j is the end working time of the controllable load j, T is the time period, 24 hours a day.

2-2、建立可控负荷响应时间模型：2-2. Establish a controllable load response time model:

Figure GDA0002451069240000125
Figure GDA0002451069240000125

其中：k为可控负荷j中的用电设备的编号，k＝1,2,…,p，p为用电设备总数，τj为可控负荷的响应时间，

Figure GDA0002451069240000126
为可控负荷j中第k个用电设备的需求响应时间，
Figure GDA0002451069240000127
为可控负荷j中第p个用电设备的需求响应时间。Where: k is the number of the electrical equipment in the controllable load j, k=1,2,...,p, p is the total number of electrical equipment, τ j is the response time of the controllable load,
Figure GDA0002451069240000126
is the demand response time of the kth electrical equipment in the controllable load j,
Figure GDA0002451069240000127
is the demand response time of the p-th electrical equipment in the controllable load j.

根据式(14)、(17)建立自备电厂所属企业中的可控负荷参与需求响应过程中的调节能耗和响应时间的模型。According to equations (14) and (17), a model is established in which the controllable load in the enterprise of the self-provided power plant participates in the process of adjusting energy consumption and response time in the demand response process.

在本实施例中，上述步骤3采用如下优选方案实现：In the present embodiment, above-mentioned step 3 adopts the following preferred scheme to realize:

3-1、建立储能装置的调节能耗模型：3-1. Establish the regulation energy consumption model of the energy storage device:

作为电力系统运行的补充环节，由于储能具有输出功率平滑且双向可调的特点，因此其主要用来补偿负荷动作时的产生的欠切或过切量，可从时间上有效隔离电能的生产和使用，从而提高功率调节的准确度，协助解决电力系统供需瞬时平衡的执行原则。与此同时，储能装置价格昂贵，因此通常一个自备电厂所属企业配备一个储能装置，其调节能耗模型如下：As a supplementary link in the operation of the power system, since the energy storage has the characteristics of smooth output power and two-way adjustable, it is mainly used to compensate for the under-cut or over-cut amount generated when the load operates, which can effectively isolate the production of electric energy from time to time. and use, thereby improving the accuracy of power regulation and assisting in solving the implementation principle of the instantaneous balance of supply and demand in the power system. At the same time, energy storage devices are expensive, so usually an enterprise owned by a self-provided power plant is equipped with an energy storage device, and its energy consumption model is as follows:

Figure GDA0002451069240000131
Figure GDA0002451069240000131

其中：ps为储能装置功率大小，γs为单位储能功率的调节能耗，ks为储能装置折旧系数，γp为功率能耗系数，由储能装置充放电功率大小决定。γc为容量能耗系数，由储能装置容量大小决定，

Figure GDA0002451069240000132
为储能容量上限。Among them: p s is the power of the energy storage device, γ s is the adjustment energy consumption per unit of energy storage power, k s is the depreciation coefficient of the energy storage device, and γ p is the power consumption coefficient, which is determined by the charge and discharge power of the energy storage device. γ c is the capacity energy consumption coefficient, which is determined by the capacity of the energy storage device,
Figure GDA0002451069240000132
is the upper limit of the energy storage capacity.

3-2、储能装置容量大小的约束：3-2. Constraints on the capacity of the energy storage device:

Figure GDA0002451069240000133
Figure GDA0002451069240000133

其中：

Figure GDA0002451069240000134
为储能装置的最大功率。in:
Figure GDA0002451069240000134
is the maximum power of the energy storage device.

3-3、建立储能装置的响应时间：3-3. Establish the response time of the energy storage device:

Figure GDA0002451069240000135
Figure GDA0002451069240000135

其中：τs为储能装置的响应时间，τq为第q次响应的响应时间，响应次数为n。Among them: τ s is the response time of the energy storage device, τ q is the response time of the qth response, and the number of responses is n.

根据式(18)、(20)建立自备电厂所属企业中的储能装置参与需求响应过程中的调节能耗和响应时间的模型，并根据式(19)考虑储能装置容量大小的约束。According to equations (18) and (20), a model for regulating energy consumption and response time of the energy storage device in the enterprise of the self-provided power plant participating in the demand response process is established, and the constraint on the capacity of the energy storage device is considered according to equation (19).

在本实施例中，上述步骤4采用如下优选方案实现：In the present embodiment, the above-mentioned step 4 is realized by the following preferred scheme:

4-1、建立自备电厂的等效负荷模型PT：4-1. Establish the equivalent load model P T of the self-provided power plant:

自备电厂发用电资源包括发电机组、企业用电负荷以及储能装置，其中发电资源中包括纯燃煤机组发电、热电联产机组发电、余热余压机组发电以及储能装置，对于发电机组来说不同的类型和装机容量会导致不同的可调节容量，对于储能装置来说不同的类型和性能同样会影响其充放电功率；而用电资源主要为企业生产工序中的用电，生产过程中不同的用电环境的可控性不同，因此需要分为可控和不可控两类分析，对于可控负荷来说用电设备的类型、功率、应用场景均会影响其可控容量的大小。如图3所示，将自备电厂发电机组、其所属企业的可控负荷以及储能装置看为一个整体等效对外参与需求响应时即可看作一个等效负荷，该负荷的调节情况由三者共同决定，可表示如下：The power generation resources of self-provided power plants include generator sets, enterprise electricity loads and energy storage devices. The power generation resources include pure coal-fired power generation units, cogeneration units, waste heat and pressure units, and energy storage devices. For units, different types and installed capacities will lead to different adjustable capacities. For energy storage devices, different types and performances will also affect their charging and discharging power; and electricity resources are mainly used in the production process of enterprises. The controllability of different power consumption environments in the production process is different, so it needs to be divided into two categories: controllable and uncontrollable. For controllable loads, the type, power, and application scenarios of electrical equipment will affect its controllable capacity. the size of. As shown in Figure 3, the self-provided power plant generator set, the controllable load of its affiliated enterprise and the energy storage device can be regarded as an equivalent load when it is regarded as a whole equivalent to external participation in demand response. The adjustment of the load is given by The three jointly decide, which can be expressed as follows:

Figure GDA0002451069240000141
Figure GDA0002451069240000141

其中：PT为自备电厂发用电资源等效负荷，xj为可控负荷的开关状态，1为可控负荷正常用电，0为可控负荷关停状态，x0为储能装置的开关状态，1为储能装置正常工作，0为储能装置关停状态。Among them: P T is the equivalent load of the power generation resources of the self-provided power plant, x j is the on-off state of the controllable load, 1 is the normal power consumption of the controllable load, 0 is the shutdown state of the controllable load, and x 0 is the energy storage device 1 is the normal operation of the energy storage device, and 0 is the shutdown state of the energy storage device.

若综合三者得到的等效负荷向电网输出功率，此时相当于电网中的发电机组出力，则可在电网用电高峰时有效参与调峰；若综合三者得到的等效负荷从电网吸收功率，此时相当于电网中的用电负荷工作，则可在电网用电低谷时帮助新能源消纳。If the equivalent load obtained by combining the three outputs power to the grid, which is equivalent to the output of the generator set in the grid, it can effectively participate in peak regulation during the peak power consumption of the grid; if the equivalent load obtained by combining the three is absorbed from the grid At this time, the power is equivalent to the electricity load in the power grid, and it can help new energy consumption when the power consumption of the power grid is low.

4-2、建立自备电厂单位调节能耗模型γT：4-2. Establish a self-provided power plant unit regulation energy consumption model γ T :

根据发电机组出力的调节能耗、可控负荷调节能耗以及储能装置调节能耗计算自备电厂发用电资源的单位调节能耗，可表示如下：According to the adjustment energy consumption of the output of the generator set, the controllable load adjustment energy consumption and the energy storage device adjustment energy consumption, the unit adjustment energy consumption of the power generation resources of the self-provided power plant is calculated, which can be expressed as follows:

Figure GDA0002451069240000142
Figure GDA0002451069240000142

其中：

Figure GDA0002451069240000143
分别为调节前的发电机组、可控负荷开关状态，
Figure GDA0002451069240000144
分别为调节后的发电机组、可控负荷开关状态，PT为综合考虑机组出力、用电负荷和储能装置得到的自备电厂等效负荷，
Figure GDA0002451069240000145
为调节前储能的充放电功率，
Figure GDA0002451069240000146
为调节后储能的充放电功率，pjt为t时刻可控负荷j的功率大小。in:
Figure GDA0002451069240000143
are the status of the generator set and controllable load switch before adjustment, respectively,
Figure GDA0002451069240000144
are the on-off states of the adjusted generator set and the controllable load, respectively, P T is the equivalent load of the self-provided power plant obtained by comprehensively considering the output of the unit, the electricity load and the energy storage device,
Figure GDA0002451069240000145
In order to adjust the charging and discharging power of the former energy storage,
Figure GDA0002451069240000146
In order to adjust the charge and discharge power of the energy storage, p jt is the power of the controllable load j at time t.

4-3、建立自备电厂的总响应时间模型τT：4-3. Establish the total response time model τ T of the self-provided power plant:

由于自备电厂所属企业中的发电机组、可控负荷及储能的响应时间不同，因此，自备电厂发用电资源整体的响应时间为其中个体的最大响应时间，可表示如下：Since the response time of the generator set, controllable load and energy storage in the enterprise of the self-provided power plant is different, the overall response time of the power generation and consumption resources of the self-provided power plant is the maximum response time of the individual, which can be expressed as follows:

Figure GDA0002451069240000151
Figure GDA0002451069240000151

其中：

Figure GDA0002451069240000152
为调节前储能装置的开关状态，
Figure GDA0002451069240000153
为调节后储能装置的开关状态。in:
Figure GDA0002451069240000152
In order to adjust the switching state of the front energy storage device,
Figure GDA0002451069240000153
It is the switching state of the energy storage device after adjustment.

4-4、计算自备电厂总响应次数Jnum：4-4. Calculate the total response times J num of the self-provided power plant:

Figure GDA0002451069240000154
Figure GDA0002451069240000154

4-5、求解最优调控策略：4-5. Solve the optimal control strategy:

根据自备电厂发用电资源单位调节能耗模型可以求得自备电厂发用电资源调节能耗CT可表示如下：According to the unit adjustment energy consumption model of the power generation and consumption resources of the self-provided power plant, it can be obtained that the energy consumption CT of the power generation and consumption resources of the self-provided power plant can be expressed as follows:

Figure GDA0002451069240000155
Figure GDA0002451069240000155

以自备电厂发用电资源调节能耗最小、各单元总响应时间最短、各单元总响应次数最少为优化目标，可表示如下：Taking the minimum energy consumption of the self-provided power plant's power generation resource adjustment, the shortest total response time of each unit, and the minimum total response times of each unit as the optimization goal, it can be expressed as follows:

Figure GDA0002451069240000156
Figure GDA0002451069240000156

Figure GDA0002451069240000157
Figure GDA0002451069240000157

Figure GDA0002451069240000158
Figure GDA0002451069240000158

同时考虑各单元的实际运行情况并列出相应约束条件如下：At the same time, the actual operation of each unit is considered and the corresponding constraints are listed as follows:

S.t:S.t:

Figure GDA0002451069240000159
Figure GDA0002451069240000159

Figure GDA00024510692400001510
Figure GDA00024510692400001510

pGi(t+1)-pGit≤URi (31)p Gi(t+1) -p Git ≤UR i (31)

pGit-pGi(t+1)≤DRi (32)p Git -p Gi(t+1) ≤DR i (32)

DRi≤Ri≤URi (33)DR i ≤R i ≤UR i (33)

Figure GDA0002451069240000161
Figure GDA0002451069240000161

其中：目标函数minCT表示等效负荷的总调节能耗最低从而确保等效整体的经济性和环保性运行，目标函数minτT表示机组和负荷动作次数最小使得调控的影响范围最小，目标函数minJnum表示等效整体的响应时间最短以使系统尽快恢复稳定状态，所列的约束分别为功率平衡约束、机组出力上下限约束、机组爬坡速率约束和储能输出功率约束。Among them: the objective function minCT means that the total regulation energy consumption of the equivalent load is the lowest so as to ensure the economical and environmentally friendly operation of the equivalent whole, the objective function minτ T means that the number of unit and load actions is minimized to minimize the influence range of regulation, and the objective function minJ num It means that the response time of the equivalent whole is the shortest so that the system can return to a stable state as soon as possible.

最后根据给出的目标函数和约束条件，求解得到最优的策略。Finally, according to the given objective function and constraints, the optimal strategy is obtained.

实施例2：Example 2:

一种自备电厂发用电资源的调控装置，包括：A control device for power generation and consumption resources of a self-provided power plant, comprising:

自备电厂单位调节能耗模型、总响应模型和总响应次数计算模块，用于通过预先构建的自备电厂发电机组出力的调节能耗模型和响应模型、企业用电侧可调节负荷的调节能耗模型和响应模型、储能装置的调节能耗模型和响应模型，得到自备电厂单位调节能耗模型、自备电厂的总响应模型和自备电厂总响应次数；The unit adjustment energy consumption model, total response model and total response times calculation module of the self-provided power plant are used to adjust the energy consumption model and response model of the output of the generator set of the self-provided power plant, and the adjustment energy of the adjustable load on the power consumption side of the enterprise. energy consumption model and response model, regulation energy consumption model and response model of the energy storage device, and obtain the unit regulation energy consumption model of the captive power plant, the total response model of the captive power plant and the total response times of the captive power plant;

自备电厂发用电资源最优调控策略求解模块，用于以自备电厂发用电资源调节能耗最小、响应时间最短、响应次数最少为优化目标，求解最优的自备电厂发用电资源调控策略。The module for solving the optimal regulation strategy of the power generation resources of the self-provided power plant is used to solve the optimal power generation and consumption of the self-provided power plant with the minimum energy consumption, the shortest response time, and the least number of responses as the optimization goals. Resource control strategy.

自备电厂单位调节能耗模型γT为：The unit adjustment energy consumption model γT of the self-provided power plant is:

Figure GDA0002451069240000162
Figure GDA0002451069240000162

其中：

Figure GDA0002451069240000163
分别为调节前的发电机组、可控负荷开关状态，
Figure GDA0002451069240000164
分别为调节后的发电机组、可控负荷开关状态，
Figure GDA0002451069240000165
为调节前储能的充放电功率，
Figure GDA0002451069240000166
为调节后储能的充放电功率；in:
Figure GDA0002451069240000163
are the status of the generator set and controllable load switch before adjustment, respectively,
Figure GDA0002451069240000164
are the adjusted generator set and controllable load switch states, respectively,
Figure GDA0002451069240000165
In order to adjust the charging and discharging power of the former energy storage,
Figure GDA0002451069240000166
is the charge and discharge power of the adjusted energy storage;

自备电厂的总响应时间模型τT为：The total response time model τ T of the captive power plant is:

Figure GDA0002451069240000171
Figure GDA0002451069240000171

其中：

Figure GDA0002451069240000172
为调节前储能装置的开关状态，
Figure GDA0002451069240000173
为调节后储能装置的开关状态；in:
Figure GDA0002451069240000172
In order to adjust the switching state of the front energy storage device,
Figure GDA0002451069240000173
is the switching state of the energy storage device after adjustment;

自备电厂总响应次数Jnum：Total response times J num of the self-provided power plant:

Figure GDA0002451069240000174
Figure GDA0002451069240000174

自备电厂发用电资源调节能耗CT为：The energy consumption CT of the self-provided power plant’s power generation resource adjustment is:

Figure GDA0002451069240000175
Figure GDA0002451069240000175

以自备电厂发用电资源调节能耗最小、响应时间最短、响应次数最少为优化目标，求解最优的发用电资源调控策略，具体为：Taking the minimum energy consumption, the shortest response time, and the least number of responses as the optimization goals for the self-provided power plant’s power generation resource regulation, the optimal power generation resource regulation strategy is solved as follows:

Figure GDA0002451069240000176
Figure GDA0002451069240000176

Figure GDA0002451069240000177
Figure GDA0002451069240000177

Figure GDA0002451069240000178
Figure GDA0002451069240000178

约束条件如下：The constraints are as follows:

Figure GDA00024510692400001711
Figure GDA00024510692400001711

Figure GDA0002451069240000179
Figure GDA0002451069240000179

pGi(t+1)-pGit≤URi p Gi(t+1) -p Git ≤UR i

pGit-pGi(t+1)≤DRi p Git -p Gi(t+1) ≤DR i

DRi≤Ri≤URi DR i ≤R i ≤UR i

Figure GDA00024510692400001710
Figure GDA00024510692400001710

根据给出的目标函数和约束条件，求解得到最优的自备电厂发用电资源调节策略。According to the given objective function and constraints, the optimal regulation strategy of the power generation and consumption resources of the self-provided power plant is obtained.

本发明综合考虑自备电厂的可调节发用电资源包括发电机、可调节负荷和储能装置，将三者等效为整体参与需求响应，充分挖掘了自备电厂的需求响应潜力，显著地减轻了电网调峰负担。The invention comprehensively considers the adjustable power generation and consumption resources of the self-provided power plant, including the generator, the adjustable load and the energy storage device, and equalizes the three to participate in the demand response as a whole, fully taps the demand response potential of the self-provided power plant, and significantly The burden of peak regulation of the power grid is reduced.

实施例仅为说明本发明的技术思想，不能以此限定本发明的保护范围，凡是按照本发明提出的技术思想，在技术方案基础上所做的任何改动，均落入本发明保护范围之内。The embodiment is only to illustrate the technical idea of the present invention, and cannot limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention all fall within the protection scope of the present invention. .

Claims (9)

1. A method for regulating and controlling power generation and utilization resources of a self-contained power plant is characterized by comprising the following steps:
the method comprises the steps of obtaining a unit regulation energy consumption model of the self-contained power plant, a total response model of the self-contained power plant and the total response times of the self-contained power plant through a pre-constructed regulation energy consumption model and response model of the self-contained power plant generator set output, a regulation energy consumption model and response model of the enterprise power utilization side adjustable load and a regulation energy consumption model and response model of the energy storage device, and solving an optimal power generation and utilization resource regulation strategy by taking the minimum power generation and utilization resource regulation energy consumption, the shortest response time and the minimum response times of the self-contained power plant as optimization targets.
2. The method for regulating and controlling the power generation and utilization resources of the self-contained power plant according to claim 1, wherein the model for regulating the energy consumption of the output of the generator set of the self-contained power plant is as follows:
Figure FDA0002998196300000011
CG[i]＝Czi+Cri+Cwi
Czi＝C0
Figure FDA0002998196300000012
Cwi＝KwipGit
Figure FDA0002998196300000013
wherein: CG is the total output of the self-contained power plant generator set to regulate energy consumption, CG i]Adjusting energy consumption, x, for the output of a self-contained power plant generator set iiFor the operating state of the generator i of the self-contained power plant, pGitIs the power of the self-provided power plant generator set i output, gammaiRegulating energy consumption per unit output, CziEnergy consumption for initial construction of self-contained power plant generator set i, C0Representing initial construction energy consumption, CriFor the unit operating energy consumption of the self-contained power plant generator unit i, ai、bi、ciIs the energy consumption coefficient of the self-contained power plant generator set i, CwiEnergy consumption for operation and maintenance of self-contained power plant generator set i, KwiThe operation maintenance coefficient of the self-contained power plant generator set i is obtained;
the constraints are as follows:
the unit output force when adjusted upwards is expressed as follows:
pGi(t+1)-pGit≤URi
the set output down adjustment is expressed as follows:
pGit-pGi(t+1)≤DRi
constraint of maximum and minimum output of the unit:
Figure FDA0002998196300000021
wherein: URiFor the maximum upward climbing speed of the self-contained power plant generator set i, DRiFor the self-contained power plant generator set i maximum downward climbing speed, pGitThe output of the self-contained power plant generator set i at the moment t, pGi(t+1)The output of the self-contained power plant generator set i at the moment t +1,
Figure FDA0002998196300000022
the minimum output of the self-contained power plant generator set i at the moment t,
Figure FDA0002998196300000023
the maximum output of the self-contained power plant generator set i at the moment t;
the demand response time model of the generator set of the self-contained power plant is as follows:
Figure FDA0002998196300000024
Figure FDA0002998196300000025
DRi≤Ri≤URi
in the above formula, the first and second carbon atoms are,
Figure FDA0002998196300000026
is the output limit, R, of the generator set iiFor the ramp rate, τ, of the generator set iiIs the response time of the genset i.
3. The method for regulating and controlling the power generation and utilization resources of the self-contained power plant according to claim 1, wherein the model for regulating the energy consumption of the adjustable load at the power utilization side of the enterprise is as follows:
Figure FDA0002998196300000027
CL[j]＝kjtμt(pj(t+1)-pjt)2·△tj
Figure FDA0002998196300000028
Figure FDA0002998196300000031
wherein: j is the number of the controllable load, j is 1,2 …, m is the total number of the controllable load, CL [ j]For the regulated energy consumption, p, of the controllable load j due to process regulation and equipment operating state fluctuationjtThe capacity of the controllable load j at time t, pj(t+1)Adjusted capacity, gamma, for the controllable load j at time t +1jFor regulating the energy consumption, k, per unit power of the controllable loadjtFor the proportion of the load involved in the regulation at time t, μtIf the controllable load participates in the regulation for the time influence factor, the load is adjustedRun time advanced, then define
Figure FDA0002998196300000032
Describing the lead time of the controllable load j, and defining if the load running time is shifted
Figure FDA0002998196300000033
Describing the lag time, Δ t, of a controllable load jjAdjusting the time span, TS, for a controllable load jjFor the load to start the working time, TEjEnding the working time for the controllable load j, wherein T represents a time period;
the response model of the adjustable load is:
Figure FDA0002998196300000034
wherein: k is the number of the electric devices in the controllable load j, k is 1,2, …, p, p is the total number of the electric devices, and τ isjIn order to be able to control the response time of the load,
Figure FDA0002998196300000035
for the demand response time of the kth consumer in the controllable load j,
Figure FDA0002998196300000036
the demand response time of the p-th electric equipment in the controllable load j.
4. The method for regulating and controlling the power generation and utilization resources of the self-contained power plant according to claim 1, wherein the model for regulating the energy consumption of the energy storage device is as follows:
Figure FDA0002998196300000037
wherein p issFor the magnitude of the power of the energy storage device, gammasFor regulating energy consumption, k, per unit of stored energy powersFor the depreciation factor, gamma, of the energy storage devicepCoefficient of power consumption gammacIn order to obtain the capacity energy consumption coefficient,
Figure FDA0002998196300000038
is the upper limit of the energy storage capacity;
and (3) constraint of the capacity of the energy storage device:
Figure FDA0002998196300000039
wherein,
Figure FDA0002998196300000041
the maximum power of the energy storage device;
the response time model of the energy storage device is:
Figure FDA0002998196300000042
wherein, tausFor the response time of the energy storage device, τqThe response time of the q-th response is n.
5. The method for regulating power generation and utilization resources of the self-contained power plant as claimed in claim 1, wherein the self-contained power plant unit regulates the energy consumption model γTComprises the following steps:
Figure FDA0002998196300000043
wherein:
Figure FDA0002998196300000044
respectively in the states of the generator set before adjustment and the controllable load switch,
Figure FDA0002998196300000045
respectively the regulated generator set and the controllable load switch state PTIn order to comprehensively consider the unit output, the electrical load and the equivalent load of the self-contained power plant obtained by the energy storage device,
Figure FDA0002998196300000046
in order to adjust the charging and discharging power of the pre-stored energy,
Figure FDA0002998196300000047
charge and discharge power, p, for regulated energy storagejtThe capacity of the controllable load j at the time t; p is a radical ofGitIs the power of the self-provided power plant generator set i output, gammaiJ is the number of the controllable load, j is 1,2 …, m is the total number of the controllable load, gammasFor regulating energy consumption per unit of stored energy power, gammajThe energy consumption is adjusted for the unit power of the controllable load;
total response time model τ for self-contained power plantsTComprises the following steps:
Figure FDA0002998196300000048
wherein:
Figure FDA0002998196300000049
in order to adjust the on-off state of the front energy storage device,
Figure FDA00029981963000000410
the on-off state of the energy storage device is adjusted; tau isiFor the response time of the generator i, τjFor controllable response time of the load, tausIs the response time of the energy storage device;
total number of responses J of self-contained power plantnum：
Figure FDA0002998196300000051
The self-contained power plant adjusts the energy consumption CT to be:
Figure FDA0002998196300000052
6. the method for regulating and controlling the power generation and utilization resources of the self-contained power plant as claimed in claim 5, wherein the optimal power generation and utilization resource regulation strategy is solved by taking the minimum energy consumption, the shortest response time and the minimum response times of the power generation and utilization resources of the self-contained power plant as optimization targets, and specifically comprises the following steps:
Figure FDA0002998196300000053
Figure FDA0002998196300000054
Figure FDA0002998196300000055
the constraints are as follows:
Figure FDA0002998196300000056
Figure FDA0002998196300000057
pGi(t+1)-pGit≤URi
pGit-pGi(t+1)≤DRi
DRi≤Ri≤URi
Figure FDA0002998196300000058
solving to obtain an optimal power generation and utilization resource adjustment strategy of the self-contained power plant according to the given objective function and constraint conditions; x is the number ofiOperating conditions, x, of self-contained power plant generators ijFor the switching state of the controllable load, x0Is the switching state of the energy storage device, psThe power of the energy storage device is the same,
Figure FDA0002998196300000059
for the minimum output of the generator i of the self-contained power plant,
Figure FDA00029981963000000510
is the maximum output of the generator i of the self-contained power plant, pGi(t+1)The output of the self-provided power plant generator set i at the moment t +1, URiThe maximum upward climbing speed of the generator set i of the self-contained power plant,
Figure FDA00029981963000000511
is the maximum power of the energy storage device.
7. A regulation and control device for generating and using electricity resources of a self-contained power plant is characterized by comprising:
the system comprises a self-contained power plant unit adjusting energy consumption model, a total response model and a total response time calculating module, wherein the self-contained power plant unit adjusting energy consumption model, the total response model and the total response time calculating module are used for obtaining a self-contained power plant unit adjusting energy consumption model, a self-contained power plant total response time and a self-contained power plant total response time through a pre-constructed self-contained power plant generating set output adjusting energy consumption model and response model, an enterprise power side adjustable load adjusting energy consumption model and response model and an energy storage device adjusting energy consumption model and response model;
and the optimal regulation and control strategy solving module is used for solving the optimal regulation and control strategy of the power generation and utilization resources of the self-contained power plant by taking the minimum regulation and control energy consumption, the shortest response time and the minimum response times of the power generation and utilization resources of the self-contained power plant as optimization targets.
8. The device for regulating power generation and utilization resources of a self-contained power plant as claimed in claim 7, wherein the unit regulation energy consumption model γ of the self-contained power plantTComprises the following steps:
Figure FDA0002998196300000061
wherein:
Figure FDA0002998196300000062
respectively in the states of the generator set before adjustment and the controllable load switch,
Figure FDA0002998196300000063
respectively in the states of the regulated generator set and the controllable load switch,
Figure FDA0002998196300000064
in order to adjust the charging and discharging power of the pre-stored energy,
Figure FDA0002998196300000065
the charging and discharging power for the energy storage after adjustment; p is a radical ofGitIs the power of the self-provided power plant generator set i output, gammaiJ is the number of the controllable load, j is 1,2 …, m is the total number of the controllable load, gammasFor regulating energy consumption per unit of stored energy power, gammajThe energy consumption is adjusted for the unit power of the controllable load;
total response model τ for self-contained power plantsTComprises the following steps:
Figure FDA0002998196300000066
wherein:
Figure FDA0002998196300000067
to be adjusted beforeThe on-off state of the energy storage device,
Figure FDA0002998196300000068
the on-off state of the energy storage device is adjusted; tau isiFor the response time of the generator i, τjFor controllable response time of the load, tausIs the response time of the energy storage device;
total number of responses J of self-contained power plantnum：
Figure FDA0002998196300000071
The self-contained power plant adjusts the energy consumption CT to be:
Figure FDA0002998196300000072
9. the device for regulating and controlling the power generation and utilization resources of the self-contained power plant as claimed in claim 8, wherein the optimal power generation and utilization resource regulation strategy is solved by taking the minimum energy consumption, the shortest response time and the minimum response times of the power generation and utilization resources of the self-contained power plant as optimization targets, and specifically comprises the following steps:
Figure FDA0002998196300000073
Figure FDA0002998196300000074
Figure FDA0002998196300000075
the constraints are as follows:
Figure FDA0002998196300000076
Figure FDA0002998196300000077
pGi(t+1)-pGit≤URi
pGit-pGi(t+1)≤DRi
DRi≤Ri≤URi
Figure FDA0002998196300000078
solving to obtain an optimal power generation and utilization resource adjustment strategy of the self-contained power plant according to the given objective function and constraint conditions; x is the number ofiOperating conditions, x, of self-contained power plant generators ijFor the switching state of the controllable load, x0Is the switching state of the energy storage device, psThe power of the energy storage device is the same,
Figure FDA0002998196300000079
for the minimum output of the generator i of the self-contained power plant,
Figure FDA00029981963000000710
is the maximum output of the generator i of the self-contained power plant, pGi(t+1)The output of the self-provided power plant generator set i at the moment t +1, URiThe maximum upward climbing speed of the generator set i of the self-contained power plant,
Figure FDA0002998196300000081
is the maximum power of the energy storage device.
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