CN104574138A - Double-loop power supply differential electricity pricing method and control system - Google Patents

Abstract

The invention discloses a double-loop power supply differential electricity pricing method and a control system. The double-loop power supply differential electricity pricing method comprises the following steps: S100, analyzing electrical loads of users in a region, and evaluating an analysis result; S200, according to an evaluation result, performing double-loop trial control. Through direct load control, the novel double-loop power supply differential electricity price mechanism provided by the invention facilitates enhancement of a peak clipping effect of electricity price at different time and customized electricity using planning of a user, so that the application prospect is wide.

Description

Pricing method and control system of differential electricity price for double-loop power supply

technical field

The invention belongs to the field of power supply, and in particular relates to a pricing method and a control system for differential electricity prices of dual-circuit power supply.

Background technique

There is a serious power shortage phenomenon in our country. In response to this situation, measures to implement peak-shaving and valley-filling are proposed. As a loss reduction and power saving measure for the economical operation of the power grid, peak shaving and valley filling does not require additional capital investment and does not affect the normal work of power supply customers. It can save transformer and line power loss and achieve the purpose of loss reduction and power saving. Time-of-use electricity price, as a measure of peak shaving and valley filling, stimulates and encourages users to actively change their consumption behavior and electricity consumption mode through price signals to achieve the purpose of peak shifting and valley filling. It is effective but not obvious.

Contents of the invention

The purpose of the present invention is to provide a pricing method and control system for differential electricity prices of dual-circuit power supply. On the basis of collecting user load data, dual-circuit control is provided to obtain a more economical electricity consumption plan.

In order to solve the above technical problems, the present invention provides a pricing method for differential electricity prices of dual-circuit power supply, which includes the following steps:

Step S100, analyzing the electricity load of users in the area, and evaluating the analysis results;

Step S200, performing dual-loop trial control according to the evaluation result.

Preferably, in order to realize the classification of electricity loads, the method for analyzing the electricity loads of users in the area in the step S100 includes: classifying the electricity loads, one of which is an important load, and its normal state is It is connected to the traditional circuit; the other type is general load, and its normal state is to connect to the direct control circuit.

Preferably, in order to realize the evaluation of the analysis results, the method for evaluating the analysis results in step S100 includes: step S110, load data analysis; step S120, setting a pricing model; and step S130, obtaining evaluation effects through simulation.

Preferably, in order to realize the analysis of the load data, the method for analyzing the load data in the step S110 includes:

Step S111, dividing peak and valley power consumption time periods; Step S112, deriving power consumption formula; and Step S113, establishing a mathematical model of double-circuit time-of-use electricity price.

Preferably, in order to better consider the actual situation of the user, improve the calculation accuracy of establishing the mathematical model of the double-circuit time-of-use electricity price; the method for establishing the mathematical model of the double-circuit time-of-use electricity price in the step S113 includes: After a power outage, the total load for a period of time is detected to determine whether the user has connected the load that was originally connected to the direct control circuit to the traditional circuit.

Preferably, it is better to establish a pricing model, the method of setting the pricing model in the step S120 includes: setting the double-circuit electricity price according to the overall goal of demand side management and/or the accounting principles in economics, setting the traditional circuit The price of electricity is higher than that of the direct control loop.

Preferably, in order to realize the simulation evaluation, the method for obtaining the evaluation effect through simulation in the step S130 includes: performing MATLAB numerical simulation according to the set double-circuit electricity price, and the objective function is that the peak load is extremely small, the valley load is extremely large, and the user The total electricity cost is extremely small, and the constraint condition is double-circuit electricity price. The objective function of the simulation is a multi-objective function, which is calculated by the weighted coefficient method; and the simulation results are analyzed, and the time-of-use electricity price and the double-circuit time-of-use electricity price load curve are drawn. , to verify the effect of the dual-circuit electricity price on peak shaving and valley filling, and compare and calculate the difference before and after the user's electricity bill.

Preferably, the dual-loop trial control is divided into two loop outputs at the user's electricity meter, namely, the traditional loop and the direct control loop.

In another aspect, the present invention also provides a dual-loop power supply differential electricity price control system, including:

The power load evaluation unit analyzes the power load of users in the area and evaluates the analysis results; the dual-loop trial control unit performs dual-loop trial control according to the evaluation results.

Preferably, the electrical load evaluation unit includes:

The classification module is suitable for classifying the electric loads; one of them is an important load, which is normally connected to a traditional circuit; the other is a general load, which is normally connected to a direct control circuit;

The load data analysis module divides the peak and valley electricity consumption periods, derives the electricity consumption formula, and establishes a double-circuit time-of-use electricity price mathematical model;

Pricing model module, set double-circuit electricity price according to the overall goal of DSM and the accounting principles in economics;

The simulation module performs MATLAB numerical simulation according to the set double-circuit electricity price. The objective function is that the peak load is extremely small, the valley hour load is extremely large, and the total electricity cost of the user is extremely small, and the constraint condition is the double-circuit electricity price. The objective function of the simulation is multiple The objective function is calculated using the weighting coefficient method; and the simulation results are analyzed to draw the time-of-use electricity price and the double-circuit time-of-use electricity price load curve, verify the effect of the double-circuit electricity price on peak shaving and valley filling, and compare and calculate user electricity charges difference before and after;

The dual-loop pilot control unit is divided into two loop outputs at the user's electricity meter, that is, a traditional loop and a direct control loop.

The beneficial effect of the present invention is that the novel dual-circuit power supply differential electricity price mechanism provided by the present invention can not only facilitate the enhanced peak-shaving effect of the time-of-use electricity price through direct load control, but also facilitate the user's self-defined planning of electricity consumption, and has a wide range of applications prospect.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 is a schematic diagram of a new dual-circuit power supply differential electricity price mechanism;

Figure 2 is a schematic diagram of load classification, modeling, and analysis flow;

Fig. 3 is a functional block diagram of the dual-circuit power supply differential electricity price control system of the present invention.

detailed description

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

Example 1

Figure 1 is a schematic diagram of the pricing method of the new dual-circuit power supply differential electricity price.

As shown in Figure 1, the pricing method of the dual-circuit power supply difference electricity price of the present invention comprises the following steps:

Step S100, analyzing the electricity load of users in the area, and evaluating the analysis result; Step S200, performing dual-loop trial control according to the evaluation result.

Figure 2 is a flow diagram of load classification, modeling, and analysis.

As shown in Figure 2, specifically, the method for analyzing the electricity load of users in the area in the step S100 includes: collecting electricity information of a large number of users in the area; classifying the electricity load (providing classification reference standard), one of which is an important load, which is normally connected to a traditional circuit; the other is a general load, which is normally connected to a direct control circuit, which can directly control the on-off of this type of load, and can also be manually connected to a traditional circuit. circuit.

The method for evaluating the analysis results in step S100 includes: step S110, load data analysis; step S120, setting a pricing model; and step S130, obtaining evaluation results through simulation.

The method of load data analysis in the step S110 includes:

Step S111, divide the peak and valley power consumption periods, that is, divide the power consumption periods into T peaks and T valleys.

Step S112, deriving the power consumption formula; that is

P total = P traditional + P direct control = (P traditional peak + P traditional valley) + (P direct control peak + P direct control valley).

Step S113, establishing a mathematical model of the dual-circuit time-of-use electricity price.

Further, the method for establishing a dual-circuit time-of-use electricity price mathematical model in step S113 includes: detecting the total load within a period of time after the user's direct control circuit is powered off, so as to determine whether the user connects the original direct control circuit The load is connected to the traditional circuit.

For example, the peak load of the traditional circuit is P1, and the peak load of the direct control circuit is P2. After the dispatcher cuts off the direct control circuit, the user may connect part of the load to the traditional circuit. Therefore, after the total load gradually rebounds from P1

P1+P2*η, where η is the load amplitude coefficient, which can be obtained by calculating the measured power, that is, if the power rise after a period of time is P3, then the load amplitude coefficient η is (P3-P1)/P2.

The method for setting the pricing model in the step S120 includes: setting the double-loop electricity price according to the overall goal of demand side management and/or the accounting principles in economics; that is, setting the electricity price of the traditional loop higher than the electricity price of the direct control loop Among them, demand side management (DSM, Demand Side Management) refers to the adoption of effective incentive and guidance measures and appropriate operation methods with the support of government regulations and policies, through power generation companies, power grid companies, energy service companies, and social intermediary organizations. , product suppliers, power users, etc. work together to improve the efficiency of terminal power consumption and change the way of power consumption. While meeting the same power consumption functions, reduce power consumption and power demand, achieve resource conservation and environmental protection, and achieve the best social benefits. Benefits to all parties, management activities performed by the lowest cost energy services.

For example: peak electricity price, traditional circuit is N1 yuan/kWh, direct control circuit is N2 yuan/kWh, N1>N2, the preferential margin is ((N1-N2)/N1)*100%; off-peak electricity price, traditional circuit is M1 yuan/degree, the direct control circuit is M2 yuan/degree, M1>M2, the preferential margin is ((M1-M2)/M1)*100%. The specific implementation includes: for example, the peak electricity price, the traditional circuit is 0.5583 yuan/kWh, the direct control loop is 0.4083 yuan/kWh, and the discount rate is 26.9%; the off-peak electricity price, the traditional circuit is 0.3583 yuan/kWh, and the direct control loop is 0.3083 yuan / degree, the preferential margin is 14.0%.

The method for obtaining the evaluation effect through simulation in the step S130 includes: performing MATLAB numerical simulation according to the set double-circuit electricity price, the objective function is that the peak load is extremely small, the off-peak load is extremely large, the total electricity cost of the user is extremely small, and the constraint condition The objective function of the simulation is a multi-objective function, which is calculated by the weighted coefficient method; and the simulation results are analyzed, and the time-of-use electricity price and the double-circuit time-of-use electricity price load curve are drawn to verify the impact of the double-circuit electricity price on The effect of peak shaving and valley filling, and compare and calculate the difference before and after the user's electricity bill.

As another optional implementation manner of the method of obtaining the evaluation effect through simulation in the step S130, the method may further include: user, power supply enterprise benefit and impact evaluation.

The dual-loop trial control is divided into two loop outputs at the user's electricity meter, that is, the traditional loop and the direct control loop; wherein, the traditional loop is suitable for accessing important loads, and the reliability of power supply is high. Time-sharing The electricity price is slightly higher; the direct control loop can be controlled remotely, the power supply reliability is low, and the time-of-use electricity price is slightly lower.

The method of the dual-circuit power supply differential electricity price mechanism further includes: step S300, that is, repeating step S100 and step S200; specifically, classifying the corresponding user's electricity load obtained by the dual-circuit trial control, and evaluating the analysis results ; Then carry out dual-loop trial control according to the evaluation results until the user obtains the best power consumption plan.

Example 2

Fig. 3 is a functional block diagram of the dual-circuit power supply differential electricity price control system of the present invention.

As shown in Figures 1 to 3, the present invention also provides a dual-circuit power supply differential electricity price control system, including:

The power load evaluation unit analyzes the power load of users in the area and evaluates the analysis results;

The dual-loop trial control unit performs dual-loop trial control according to the evaluation results.

Further, the electric load evaluation unit includes:

The classification module is suitable for classifying the electric loads; one of them is an important load, which is normally connected to a traditional circuit; the other is a general load, which is normally connected to a direct control circuit.

The load data analysis module divides the peak and valley electricity consumption periods, derives the electricity consumption formula, and establishes a double-circuit time-of-use electricity price mathematical model.

The pricing model module sets the double-circuit electricity price according to the overall goal of DSM and the accounting principles in economics.

The simulation module performs MATLAB numerical simulation according to the set double-circuit electricity price. The objective function is that the peak load is extremely small, the valley hour load is extremely large, and the total electricity cost of the user is extremely small, and the constraint condition is the double-circuit electricity price. The objective function of the simulation is multiple The objective function is calculated using the weighting coefficient method; and the simulation results are analyzed to draw the time-of-use electricity price and the double-circuit time-of-use electricity price load curve, verify the effect of the double-circuit electricity price on peak shaving and valley filling, and compare and calculate user electricity charges difference before and after.

The dual-loop pilot control unit is divided into two loop outputs at the user's electricity meter, that is, the traditional loop and the direct control loop; wherein, the traditional loop is suitable for accessing important loads, and the reliability of power supply is high. The time-of-use electricity price is slightly higher; the direct control loop can be controlled remotely, the power supply reliability is low, and the time-of-use electricity price is slightly lower.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (10)

1. a pricing method for double circuit power supply different pricing of electric power, comprises the steps:

Step S100, analyzes the power load of district's intra domain user, and assesses analysis result;

Step S200, carries out the tentative control in two-circuit according to assessment result.

2. pricing method according to claim 1, is characterized in that, the method that the power load of described step S100 Zhong Dui district intra domain user carries out analyzing comprises: classify to described power load, wherein

One class is important load, and its normality is access conventional circuit;

Another kind of is general load, and its normality directly controls loop for accessing.

3. pricing method according to claim 2, is characterized in that, comprises in described step S100 to the method that analysis result is assessed:

Step S110, load data analysis;

Step S120, setting pricing model; And

Step S130, obtains Evaluated effect by emulation.

4. pricing method according to claim 3, is characterized in that, in described step S110, the method for load data analysis comprises:

Step S111, divided the electricity using at the peak time period;

Step S112, the power consumption derivation of equation; And

Step S113, sets up two-circuit tou power price mathematical model.

5. pricing method according to claim 4, it is characterized in that, the method setting up two-circuit tou power price mathematical model in described step S113 comprises: after being suitable for directly controlling loop power-off to user, total load in a period of time detects, to judge that the sub-load whether former access is directly controlled loop by user has accessed conventional circuit.

6. pricing method according to claim 5, it is characterized in that, the method setting pricing model in described step S120 comprises: the Accounting Principles setting two-circuit electricity price according to demand in the overall goal of side management and/or economics, namely sets the electricity price of electricity price higher than straight control loop of conventional circuit.

7. pricing method according to claim 6, it is characterized in that, comprised by the method for emulation acquisition Evaluated effect in described step S130: the two-circuit electricity price according to setting carries out MATLAB numerical simulation, when objective function is peak, during load minimum, paddy, load is very big, the total electricity charge of user are minimum, and constraint condition is two-circuit electricity price, the objective function of emulation is multiple objective function, adopts weighting factor method to calculate; And

Simulation result is analyzed, draws tou power price and two-circuit tou power price power load curve, to verify that this two-circuit electricity price is to the effect of peak load shifting, and difference before and after comparing calculation demand charge.

8. pricing method according to claim 7, is characterized in that, described two-circuit is tentative to be controlled, punishing into two loops with ammeter and export namely user, i.e. conventional circuit and directly control loop.

9. a double circuit power supply different pricing of electric power control system, is characterized in that, comprising:

Power load assessment unit, analyzes the power load of district's intra domain user, and assesses analysis result;

Control module is tried in two-circuit, carries out the tentative control in two-circuit according to assessment result.

10. double circuit power supply different pricing of electric power control system according to claim 9, is characterized in that,

Described power load assessment unit comprises:

Sort module, is suitable for classifying to described power load; Wherein a class is important load, and its normality is access conventional circuit; Another kind of is general load, and its normality directly controls loop for accessing;

Load data analysis module, divided the electricity using at the peak time period, the power consumption derivation of equation, and set up two-circuit tou power price mathematical model;

Pricing model module, according to the Accounting Principles setting two-circuit electricity price in the overall goal of DSM and economics;

Emulation module, two-circuit electricity price according to setting carries out MATLAB numerical simulation, and when objective function is peak, during load minimum, paddy, load is very big, the total electricity charge of user are minimum, and constraint condition is two-circuit electricity price, the objective function of emulation is multiple objective function, adopts weighting factor method to calculate; And simulation result is analyzed, draw tou power price and two-circuit tou power price power load curve, verify that this two-circuit electricity price is to the effect of peak load shifting, and difference before and after comparing calculation demand charge;

Control module is tried in described two-circuit, punishing into two loops with ammeter and export namely user, i.e. conventional circuit and directly control loop.