Power grid electric quantity balance analysis method based on space-time dynamic balance characteristics

Abstract

The invention relates to a power grid electric quantity balance analysis method based on space-time dynamic balance characteristics, and the method comprises the steps: firstly obtaining the operation parameters and environment monitoring data of a power generation system in a power grid, then calculating the generated power of the power generation system, and building an energy storage model of the power grid; then, carrying out real-time acquisition and classified integration on the power consumption data on the power equipment to obtain a load demand condition of the power equipment; thirdly, constructing a power grid power supply model by combining the energy storage model based on the electric quantity storage condition and the electric power equipment load demand condition, and constructing a power grid electric power and electric quantity balance model according to the energy storage model of the power grid and the power supply model of the power grid after the construction of the power grid power supply model is completed; and finally, based on the electric power and electric quantity balance model, obtaining balance information and electric quantity information of the electric power equipment, and according to the electric quantity information, carrying out statistical integration and transmission allocation on the electric quantity through an integration scheduling module. The device has the advantages of being reasonable in design and stable and efficient in use.

Description

Technical Field

[0001] The present invention belongs to the technical field of power grid distribution analysis, and in particular relates to a power grid electricity balance analysis method based on spatiotemporal dynamic balance characteristics. Background Art

[0002] At present, as an important basic industry, the power industry has an important impact on the development of the national economy and the improvement of the quality of life of the public. Both shortage or surplus of power supply will have an adverse impact on power companies, thus restricting the development of the power industry. Under normal circumstances, power balance is the electric energy formed by the coordinated allocation of primary power generation energy among regions, so as to achieve the overall optimal utilization of power generation resources in the whole network. However, with the high proportion of new energy represented by wind power and photovoltaics connected to the distribution network, due to the instability of new energy power such as wind power and photovoltaics, it is easy to cause the distribution network to have problems such as wind and light abandonment, voltage over-limit, current reverse transmission, and unreliable power supply. Therefore, it is necessary to conduct power balance analysis on the distribution network to guide the orderly access and full absorption of new energy while reducing the investment cost of substations. To this end, it is necessary to develop a reasonably designed, stable and efficient power grid power balance analysis method based on spatiotemporal dynamic balance characteristics. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a power grid electricity balance analysis method based on spatiotemporal dynamic balance characteristics that is reasonably designed and stable and efficient to use.

[0004] The object of the present invention is achieved by: a method for analyzing power grid power balance based on spatiotemporal dynamic balance characteristics, characterized in that it comprises the following steps: Step 1: Obtain the operating parameters and environmental monitoring data of the power generation system in the power grid, calculate the power generation power of the power generation system, and then establish the energy storage model of the power grid based on the power generation power of the power generation system; Step 2: The power consumption data of the power equipment is collected in real time through the power collection device installed on the power equipment; the collected power consumption data is classified and integrated according to the equipment type, so as to obtain the load demand of each power equipment; then, the total power consumption data is transmitted to the inside of the master controller through the data transmission module; Step 3: Based on the current electricity storage situation and the load demand of the power equipment, and combined with the energy storage model, a power grid power supply model is constructed; Step 4: According to the energy storage model and power supply model of the power grid, the power grid power balance model is constructed by setting the objective function and constraints, and taking into account the energy storage configuration and demand-side management; Step 5: Based on the power and electricity balance model, and in combination with the power grid calculation rules, the balance information and electricity information of each power device are calculated in real time. After that, the electricity information of the power devices is statistically integrated through the integrated scheduling module, and the electricity produced is transmitted and allocated as needed. At the same time, the detection module can obtain the loss rate of each power device based on the balance information of each power device. When the loss rate of the power device is greater than the corresponding loss rate threshold, the power device is determined to be abnormal; Step 6: Use the storage module inside the master controller to store and back up the balance information, power information and alarm information.

[0005] Furthermore, the environmental monitoring data includes solar radiation intensity, temperature, air density and wind speed in the environment where the power grid is located.

[0006] Furthermore, the constraints in step 4 include: power balance, energy storage operation constraints, demand side management and distributed new energy operation constraints.

[0007] Furthermore, the detection module in step 5 is internally provided with an alarm unit, and when the detection module determines that the power equipment is abnormal, the alarm unit may be triggered to send out a warning signal.

[0008] Beneficial effects of the present invention: The power grid power balance analysis method provided by the present invention can first obtain the operating parameters and environmental monitoring data of the power generation system in the power grid through the monitoring component, and calculate the power generation power of the power generation system based on the parameters and data, and then establish the energy storage model of the power grid based on the power generation power; then, the power consumption data on the power equipment is collected and classified and integrated in real time, so as to obtain the load demand of each power equipment; then, based on the current power storage situation and the load demand of the power equipment, and in combination with the energy storage model, a power grid power supply model is constructed, and after the power grid power supply model is constructed, according to the power storage model and the power supply model of the power grid, by setting the objective function and constraint conditions, and while comprehensively considering the energy storage configuration and demand side management, a power grid power balance model is constructed; finally, based on the power balance model, the balance information and power information of each power equipment are obtained, and then, according to the power information and the power information of the power equipment is statistically integrated through the integrated scheduling module, the power generated is transported and allocated, and at the same time, the loss rate of each power equipment can be obtained based on the balance information of each power equipment by using the detection module, so as to determine whether the power equipment has an abnormality; in general, the present invention has the advantages of reasonable design and stable and efficient use. DETAILED DESCRIPTION

[0009] The present invention is further described below.

[0010] Embodiment: A method for analyzing power grid power balance based on spatiotemporal dynamic balance characteristics, characterized by comprising the following steps: Step 1: Obtain the operating parameters and environmental monitoring data of the power generation system in the power grid, and calculate the power generation power of the power generation system. Then, establish the energy storage model of the power grid based on the power generation power of the power generation system. The environmental monitoring data includes the solar radiation intensity, temperature, air density and wind speed in the environment where the power grid is located. Step 2: The power consumption data of the power equipment is collected in real time through the power collection device installed on the power equipment; the collected power consumption data is classified and integrated according to the equipment type, so as to obtain the load demand of each power equipment; then, the total power consumption data is transmitted to the inside of the master controller through the data transmission module; Step 3: Based on the current electricity storage situation and the load demand of the power equipment, and combined with the energy storage model, a power grid power supply model is constructed; Step 4: According to the energy storage model and power supply model of the power grid, by setting the objective function and constraints, and taking into account the energy storage configuration and demand-side management, a power grid power balance model is constructed. The constraints include: power balance, energy storage operation constraints, demand-side management, and distributed new energy operation constraints. Step 5: Based on the power and electricity balance model, and in combination with the power grid calculation rules, the balance information and electricity information of each power device are calculated in real time. After that, the electricity information of the power devices is statistically integrated through the integrated scheduling module, and the generated electricity is transmitted and allocated as needed. At the same time, the detection module can obtain the loss rate of each power device based on the balance information of each power device. When the loss rate of the power device is greater than the corresponding loss rate threshold, the power device is determined to be abnormal. When the detection module determines that the power device is abnormal, it can trigger its internal alarm unit to send out a warning signal; Step 6: Use the storage module inside the master controller to store and back up the balance information, power information and alarm information.

[0011] When the present invention is used, first, the operating parameters and environmental monitoring data of the power generation system in the power grid are obtained through the monitoring component, wherein the environmental monitoring data include the solar radiation intensity, temperature, air density and wind speed in the environment where the power grid is located, and the power generation power of the power generation system is calculated based on the obtained parameters and data, and then, the energy storage model of the power grid is established based on the power generation power of the power generation system; then, the power consumption data of the power equipment is collected in real time by using the power collection device installed on the power equipment, and the collected power consumption data is classified and integrated according to the equipment type, so as to obtain the load demand of each power equipment; then, based on the current power storage situation and the load demand of the power equipment, and in combination with the energy storage model, a power supply model of the power grid is constructed, and after the power supply model of the power grid is constructed, according to the energy storage model of the power grid and the power supply model of the power grid, by setting the objective function, constraint conditions and the like, the power supply model of the power grid is constructed. The invention relates to a power grid which is a power and electricity balance model. The power and electricity balance model is constructed by comprehensively considering the energy storage configuration and the demand side management. Finally, the balance information and the electricity information of each power device are calculated in real time in combination with the power grid calculation rules. The electricity information of the power devices is statistically integrated through the integrated scheduling module. At the same time, the electricity produced is transmitted and allocated as needed. In this process, the loss rate of each power device can be obtained based on the balance information of each power device by using the detection module. When the loss rate of the power device is greater than the corresponding loss rate threshold, the power device is determined to be abnormal. When the detection module determines that the power device is abnormal, the alarm unit set therein can be triggered to send out a warning signal. At the same time, the storage module inside the main controller is used to store and back up the balance information, electricity information and alarm information. In general, the invention has the advantages of reasonable design and stable and efficient use.

[0012] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the specific implementation modes of the present invention can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A power grid power balance analysis method based on spatiotemporal dynamic balance characteristics, characterized in that: The following steps are involved: Step 1: Obtain the operating parameters and environmental monitoring data of the power generation system in the power grid, calculate the power generation power of the power generation system, and then establish the energy storage model of the power grid based on the power generation power of the power generation system; Step 2: The power consumption data of the power equipment is collected in real time through the power collection device installed on the power equipment; the collected power consumption data is classified and integrated according to the equipment type, so as to obtain the load demand of each power equipment; then, the total power consumption data is transmitted to the inside of the master controller through the data transmission module; Step 3: Based on the current electricity storage situation and the load demand of the power equipment, and combined with the energy storage model, a power grid power supply model is constructed; Step 4: According to the energy storage model and power supply model of the power grid, the power grid power balance model is constructed by setting the objective function and constraints, and taking into account the energy storage configuration and demand-side management; Step 5: Based on the power and electricity balance model, and in combination with the power grid calculation rules, the balance information and electricity information of each power device are calculated in real time. The electricity information of the power devices is statistically integrated through the integrated scheduling module, and the generated electricity is transmitted and dispatched as needed. At the same time, the detection module can obtain the loss rate of each power device based on the balance information of each power device. When the loss rate of the power device is greater than the corresponding loss rate threshold, the power device is determined to be abnormal; Step 6: Use the storage module inside the master controller to store and back up the balance information, power information and alarm information.

2. The method for analyzing power grid power balance based on spatiotemporal dynamic balance characteristics according to claim 1, characterized in that: The environmental monitoring data includes solar radiation intensity, temperature, air density and wind speed in the environment where the power grid is located.

3. The power grid power balance analysis method based on spatiotemporal dynamic balance characteristics according to claim 1, characterized in that: The constraints in step 4 include: power balance, energy storage operation constraints, demand side management and distributed new energy operation constraints.

4. The method for analyzing power grid power balance based on spatiotemporal dynamic balance characteristics according to claim 1, characterized in that: The detection module in step 5 is internally provided with an alarm unit. When the detection module determines that the power equipment is abnormal, the alarm unit may be triggered to send out a warning signal.