Operation regulation and control method and device of power system, terminal equipment and storage medium

Abstract

The invention discloses an operation regulation and control method and device of a power system, terminal equipment and a storage medium. The method comprises the following steps: acquiring the total line power before an electric power system accident, the current looped network state, the number of regulation and control interval days, a first removal coefficient corresponding to the current looped network state, a second removal coefficient corresponding to the looped network state after switching, a first removal amount base value corresponding to the current looped network state and a second removal amount base value corresponding to the looped network state; wherein the looped network state comprises a looped network input state and a looped network exit state; when the current looped network state is a looped network exit state, the first removal coefficient is greater than the second removal coefficient, and the first removal amount base value is greater than the second removal amount base value; determining a generator tripping quantity difference threshold value according to the number of regulation and control interval days; and regulating and controlling the current looped network state according to the current looped network state, the line total power before the accident, the generator tripping amount difference threshold value, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value.

Description

Technical Field

[0001] The present invention relates to the technical field of power system operation control, and in particular to a power system operation control method, device, terminal equipment and storage medium. Background Art

[0002] During the safe operation of the power system, the system must ensure that the system does not lose stability under any single fault, that is, it must meet the N-1 principle; in the actual operation of the power system, more serious faults may also be encountered, for example, a typical N-2 fault, that is, two faults occur simultaneously in the power system. In this case, the power system needs to use stable control technology to respond in time after the accident to ensure the stable operation of the system under N-2 faults. In the actual operation of the power grid, three lines of defense are generally used to achieve stable control of the power grid, and the N-2 fault corresponds to the second line of defense. The second line of defense is generally activated after a serious fault is detected, and it is necessary to set parameters to minimize the amount of action while ensuring that the power grid is restored to stability, so as to reduce the impact of the accident. For example, in a simplified power system, the power generation side transmits the generated power through three lines. Under the N-2 fault, it is mainly manifested that only one of the three lines is transmitting normally. At this time, the power transmitted by the three lines is concentrated on one line for transmission, and the transmitted power exceeds the carrying capacity of the line itself. Therefore, the second line of defense needs to solve the problem by cutting off the generator through a stabilization device. However, the existing stabilization device determines the amount of removal by mechanically setting a fixed value, and directly cuts off the generator and load according to the mechanically set fixed value, without considering the current operating status of the ring network, resulting in a generally large amount of action, thereby sacrificing too many units and loads. Summary of the invention

[0003] The embodiments of the present invention provide an operation control method, an apparatus, a terminal device and a storage medium of an electric power system, which can improve the operation stability of the power grid.

[0004] An embodiment of the present invention provides an operation control method of an electric power system, comprising:

[0005] Obtain the total line power before the power system accident occurs, the current ring network state, the number of days between regulation and control, the first cut-off coefficient corresponding to the current ring network state, the second cut-off coefficient corresponding to the ring network state after switching the ring network state, the first cut-off amount base value corresponding to the current ring network state, and the second cut-off amount base value corresponding to the ring network state after switching the ring network state; wherein, the ring network state includes: the ring network input state and the ring network exit state; when the current ring network state is the ring network exit state, the first cut-off coefficient is greater than the second cut-off coefficient, and the first cut-off amount base value is greater than the second cut-off amount base value;

[0006] Determine the machine cutting amount difference threshold value according to the control interval days;

[0007] The current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value.

[0008] Furthermore, the current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value, including:

[0009] Determine a selected resection amount base value according to the first resection amount base value, the second resection amount base value and the maximum value function;

[0010] When the total line power before the accident occurs is greater than the selected removal amount base value, a first relationship between the first removal coefficient and the second removal coefficient is determined according to the current ring network state;

[0011] Determine a second relationship between the machine cutting amount difference and the machine cutting amount difference threshold value according to the first relationship and a preset machine cutting amount function; wherein the preset machine cutting amount function is determined according to the total line power before the accident occurs, the machine cutting amount difference threshold value, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value;

[0012] The current ring network state is regulated according to the second relationship.

[0013] Furthermore, the current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value, including:

[0014] Determine a selected resection amount base value according to the first resection amount base value, the second resection amount base value and the maximum value function;

[0015] When the total line power before the accident is not greater than the selected removal amount base value, the first removal amount under the current ring network state is calculated according to the first removal coefficient, the first removal amount base value and the total line power before the accident;

[0016] Calculate the second cutting amount after switching the ring network state according to the second cutting coefficient, the second cutting amount base value and the total line power before the accident occurs;

[0017] Calculating a cutting amount difference according to the first cutting amount and the second cutting amount;

[0018] The current ring network state is regulated according to the machine cutting quantity difference and the machine cutting quantity difference threshold.

[0019] Furthermore, it also includes:

[0020] When the current ring network state cannot be switched, the total output of the power generation side of the power system before the accident occurs is obtained;

[0021] Calculate the total output to be adjusted on the power generation side of the power system after the accident based on the total line power before the accident, the total output on the power generation side of the power system before the accident, the first cut-off coefficient, the second cut-off coefficient, the first cut-off base value, the second cut-off base value, and the number of days between adjustments and controls;

[0022] The output of the power generation side of the power system is regulated according to the total output to be adjusted.

[0023] Based on the above method embodiment, the present invention provides a corresponding device embodiment;

[0024] An embodiment of the present invention provides an operation control device of a power system, including: a data acquisition module and a control module;

[0025] The data acquisition module is used to obtain the total line power before the power system accident occurs, the current ring network state, the number of days between regulation and control, the first cut-off coefficient corresponding to the current ring network state, the second cut-off coefficient corresponding to the ring network state after switching the ring network state, the first cut-off amount base value corresponding to the current ring network state, and the second cut-off amount base value corresponding to the ring network state after switching the ring network state; wherein, the ring network state includes: the ring network input state and the ring network exit state; when the current ring network state is the ring network exit state, the first cut-off coefficient is greater than the second cut-off coefficient, and the first cut-off amount base value is greater than the second cut-off amount base value;

[0026] The control module is used to determine the machine cutting amount difference threshold according to the control interval days; and control the current ring network state according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value.

[0027] Furthermore, the current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value, including:

[0028] Determine a selected resection amount base value according to the first resection amount base value, the second resection amount base value and the maximum value function;

[0029] When the total line power before the accident occurs is greater than the selected removal amount base value, a first relationship between the first removal coefficient and the second removal coefficient is determined according to the current ring network state;

[0030] Determine a second relationship between the machine cutting amount difference and the machine cutting amount difference threshold value according to the first relationship and a preset machine cutting amount function; wherein the preset machine cutting amount function is determined according to the total line power before the accident occurs, the machine cutting amount difference threshold value, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value;

[0031] The current ring network state is regulated according to the second relationship.

[0032] Furthermore, the current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value, including:

[0033] Determine a selected resection amount base value according to the first resection amount base value, the second resection amount base value and the maximum value function;

[0034] When the total line power before the accident is not greater than the selected removal amount base value, the first removal amount under the current ring network state is calculated according to the first removal coefficient, the first removal amount base value and the total line power before the accident;

[0035] Calculate the second cutting amount after switching the ring network state according to the second cutting coefficient, the second cutting amount base value and the total line power before the accident occurs;

[0036] Calculating a cutting amount difference according to the first cutting amount and the second cutting amount;

[0037] The current ring network state is regulated according to the machine cutting quantity difference and the machine cutting quantity difference threshold.

[0038] Furthermore, it also includes an output control module;

[0039] The output control module is used to obtain the total output of the power system generation side before the accident occurs when the current ring network state cannot be switched; calculate the total output to be adjusted on the power system generation side after the accident occurs according to the total line power before the accident occurs, the total output of the power system generation side before the accident occurs, the first cut-off coefficient, the second cut-off coefficient, the first cut-off base value, the second cut-off base value and the number of days of control interval; and control the output of the power system generation side according to the total output to be adjusted.

[0040] Another embodiment of the present invention provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and when the processor executes the computer program, an operation and control method of an electric power system described in the above-mentioned embodiment of the invention is implemented.

[0041] Another embodiment of the present invention provides a storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the storage medium is located is controlled to execute the operation and control method of an electric power system described in the above-mentioned embodiment of the invention.

[0042] The following beneficial effects are achieved by implementing the present invention:

[0043] The present invention provides an operation control method, device, terminal equipment and storage medium of an electric power system. The control method obtains the total line power before the electric power system accident occurs, the current ring network state, the control interval days, the first cut-off coefficient corresponding to the current ring network state, the second cut-off coefficient corresponding to the switching ring network state, the first cut-off quantity base value corresponding to the current ring network state and the second cut-off quantity base value corresponding to the switching ring network state, and then determines the machine cutting quantity difference threshold value according to the control interval days, and controls the current ring network state based on the current ring network state, the total line power before the accident occurs, the calculated machine cutting quantity difference threshold value, the first cut-off coefficient, the second cut-off coefficient, the first cut-off quantity base value and the second cut-off quantity base value; by considering the current ring network state, considering whether the current ring network state needs to be switched according to the data corresponding to the current ring network state, the data corresponding to the switching ring network state and the machine cutting quantity difference threshold value, and by judging whether the current ring network state needs to be switched, the action amount of the control process can be reduced, so that the power grid can be stabilized faster during fault repair, and the operation stability of the power grid is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a flow chart of an operation and control method of an electric power system provided by an embodiment of the present invention.

[0045] Figure 2 It is a structural diagram of an operation and control device of an electric power system provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] like Figure 1 As shown, a method for controlling the operation of a power system provided by an embodiment of the present invention includes:

[0048] Step S1: Obtain the total line power before the power system accident occurs, the current ring network state, the number of days between regulation and control, the first cut-off coefficient corresponding to the current ring network state, the second cut-off coefficient corresponding to the ring network state after switching the ring network state, the first cut-off amount base value corresponding to the current ring network state, and the second cut-off amount base value corresponding to the ring network state after switching the ring network state; wherein the ring network state includes: the ring network input state and the ring network exit state; when the current ring network state is the ring network exit state, the first cut-off coefficient is greater than the second cut-off coefficient, and the first cut-off amount base value is greater than the second cut-off amount base value;

[0049] Step S2: determining the machine cutting amount difference threshold value according to the number of days of the regulation interval;

[0050] Step S3: regulating the current ring network state according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value.

[0051] In order to better understand the technical solution of the present invention and the technical effects that can be achieved, it is necessary to explain in advance that in the power system, the main function of the power grid is to transmit electricity from the power generation side to the user side to ensure the power consumption of the user side. When the power system fails, this power transmission function cannot be realized normally, which is mainly reflected in the overload of the transmission line, and even dynamic instability, power angle instability, etc. In a simplified power system, the power generation side transmits the generated power through three circuits. According to the N-1 principle, the transmission capacity of the three circuits does not exceed the sum of the capacities of any two circuits; however, under the N-2 fault, only one of the original three circuits can be used for power transmission. When the power transmitted by the three circuits is transmitted by one circuit, it will exceed the carrying capacity of the line itself, causing stability problems in the line, which needs to be solved by using a stabilization control device to cut off the generator set. The existing stabilization control device generally sets two parameters to control the removal amount, namely the removal amount base value and the removal coefficient. The load required to be removed is calculated by combining these two fixed set values ​​with the existing removal amount calculation formula, and then the generator is removed.

[0052] However, the existing stabilization and control devices do not make judgments based on the operating environment when shedding the load, which often results in a large amount of shedding obtained based on the calculation, and an excessive amount of action, which in turn leads to waste of load and power system resources. In addition, an excessive amount of action can easily lead to instability in the power system, which is not conducive to the stable operation of the power system. In the power system, in addition to the three-circuit high-voltage level lines, there are also low-voltage level ring networks. If the ring network is put into use, its advantage is to increase the power supply channel, alleviate stability problems and reduce the risk of power angle instability under high power conditions. Therefore, it is considered to add a ring network state switching judgment on the basis of the existing stabilization and control device. By considering the ring network state, the switching of the ring network state is added to the control of the power system, so that the control result is closer to the actual load shedding required by the power system, avoiding excessive load shedding, resulting in excessive action when cutting the machine, and thus improving the stability of the power system.

[0053] The scheme of the present invention is described in detail below.

[0054] For step S1, after the N-2 fault occurs in the power system, the total line power before the power system accident occurs, the current ring network state after the accident occurs, the number of days from the last structural adjustment, the first cut-off coefficient corresponding to the current ring network state, the second cut-off coefficient corresponding to the ring network state after switching the ring network state, the first cut-off amount base value corresponding to the current ring network state, and the second cut-off amount base value corresponding to the ring network state after switching the ring network state are obtained. It should be noted that the ring network state only includes the ring network input state and the ring network exit state, and the switching of the ring network state means switching between these two states. If the current ring network state is the ring network exit state, the first cut-off coefficient is 1.5, the first cut-off base value is 2000, and the corresponding second cut-off coefficient after switching the ring network state is 1.0, and the second cut-off base value is 1000; similarly, if the current ring network state is the ring network entry state, the first cut-off coefficient is 1.0, the first cut-off base value is 1000, and the corresponding second cut-off coefficient after switching the ring network state is 1.5, and the second cut-off base value is 2000.

[0055] For step S2, the machine cutting amount difference threshold is determined according to the number of days between the control intervals, which is mainly calculated by the following formula:

[0056] P d =1000-100D;

[0057] D = min(d,7);

[0058] Among them, P d is the difference threshold of the machine cutting amount; d is the regulation interval in days, that is, the number of days since the last structural adjustment.

[0059] For step S3, under normal circumstances, the machine cutting amount in the current ring network state and the machine cutting amount after the ring network state is switched can be calculated according to the current ring network state, and then the difference of the machine cutting amount after the state is switched can be calculated according to the machine cutting amount in the current ring network state and the machine cutting amount after the ring network state is switched, and then compared with the machine cutting amount difference threshold to determine whether the ring network state needs to be switched. However, in practice, in order to improve the calculation efficiency, it is not necessary to directly calculate the machine cutting amount in the two ring network states at the beginning, and it can be determined whether the machine cutting amount calculation needs to be performed separately through the following two preferred embodiments.

[0060] In a preferred embodiment, the current ring network state is regulated according to the current ring network state, the total line power before the accident, the cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value, including: determining the selected cutting amount base value according to the first cutting amount base value, the second cutting amount base value and the maximum value function; when the total line power before the accident is greater than the selected cutting amount base value, determining a first relationship between the first cutting coefficient and the second cutting coefficient according to the current ring network state; determining a second relationship between the cutting amount difference and the cutting amount difference threshold according to the first relationship and a preset cutting amount function; wherein the preset cutting amount function is determined according to the total line power before the accident, the cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value; and regulating the current ring network state according to the second relationship.

[0061] In a preferred embodiment, the current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value, including: determining the selected cutting amount base value according to the first cutting amount base value, the second cutting amount base value and the maximum value function; when the total line power before the accident is not greater than the selected cutting amount base value, calculating the first machine cutting amount under the current ring network state according to the first cutting coefficient, the first cutting amount base value and the total line power before the accident; calculating the second machine cutting amount after switching the ring network state according to the second cutting coefficient, the second cutting amount base value and the total line power before the accident; calculating the cutting amount difference according to the first cutting amount and the second cutting amount; regulating the current ring network state according to the cutting amount difference and the cutting amount difference threshold.

[0062] Specifically, assuming that the first cut-off value in the current ring network state is P 01 The first cut-off coefficient is K1, and the second cut-off value after switching the ring network state is P 02 , the second removal coefficient is K2, and the total line power before the accident is P.

[0063] First, the selected resection amount base value is determined according to the first resection amount base value, the second resection amount base value and the maximum value function, and the corresponding formula is as follows:

[0064] max(P 01 ,P 02 )

[0065] Among them, max() is the maximum value function, which is used to determine P 01 and P 02 The larger value is used as the base value of the selected resection amount.

[0066] When the total line power before the accident is greater than the selected cut-off value, that is, P>max(P 01 ,P 02 ), then the amount of machine disconnection reduced by switching the ring network state under the current ring network state is:

[0067] ΔP=K1(PP 01 )-K2(PP 02 )=(K1-K2)P-(K1P 01 -K2P 02 )

[0068] If ΔP>P d , that is, (K1-K2)P-(K1P 01 -K2P 02 )>1000-100D, then the following preset cutting machine function can be obtained:

[0069]

[0070] P cr =(K1P 01 -K2P 02 )+1000-100D

[0071] That is, in actual use, if P>max(P 01 ,P 02 ), the cutting amount difference ΔP and the cutting amount difference threshold P can be determined based on the magnitude relationship between the first cutting coefficient K1 and the second cutting coefficient K2 (i.e., the above-mentioned first relationship) combined with the above-mentioned preset cutting amount function. d , and then directly determine whether the current ring network state needs to be switched according to the second relationship, without having to calculate the machine-cutting amount in the current ring network state and the machine-cutting amount after switching the ring network state, and then determine the machine-cutting amount difference and compare it with the machine-cutting amount difference threshold. In addition, in the above-mentioned preset machine-cutting amount function, P cr =(K1P 01 -K2P 02)+1000-100D and K1-K2 are constants after D is determined, that is, they are updated at most once a day. Therefore, compared with the method of directly calculating the machine cutting amount under the two ring network states and then comparing it with the machine cutting amount difference threshold, the above method of presetting the machine cutting amount function can significantly improve the judgment efficiency.

[0072] For example, whether the current ring network state needs to be switched can be referred to the following table example.

[0073]

[0074] If P>max(P 01 ,P 02 ), the cutting amount calculation formula is used to directly calculate the first cutting amount under the current ring network state and the second cutting amount after switching the ring network state, and then the cutting amount difference is determined according to the first cutting amount and the second cutting amount, and then compared with the cutting amount difference threshold to determine whether to adjust the current ring network state.

[0075] In a preferred embodiment, it also includes: when the current ring network state cannot be switched, obtaining the total output of the power system generation side before the accident occurs; calculating the total output to be adjusted on the power system generation side after the accident occurs based on the total line power before the accident occurs, the total output of the power system generation side before the accident occurs, the first cut-off coefficient, the second cut-off coefficient, the first cut-off base value, the second cut-off base value and the number of days of the regulation interval; and regulating the output of the power system generation side according to the total output to be adjusted.

[0076] Specifically, due to the complexity of the actual operation of the power system, it is not feasible to adjust the ring network status at any time. Therefore, it is necessary to consider the processing strategy when the ring network status cannot be switched. Assuming that the current state is in the ring network exit state, K1>K2. If If the ring network state can be adjusted, the ring network should be put into operation to reduce the system risk. However, due to objective reasons, it is not feasible to put the ring network into operation, and the system is forced to operate in the ring network exit state. In this case, the system risk is high. The higher the system risk, the greater the p value. The p value is mainly determined by the output of the power generation side, and the output adjustment of the power generation side is generally realistic, so it can be based on As a basis for judging whether it is necessary to consider adjusting the output of the power generation side, the larger p is, the stronger the necessity of reducing the output of the power generation side is. n (i.e. the above-mentioned total output to be adjusted) can be determined according to the total output p0 and p value of the power generation side of the power system before the accident, that is, according to the following formula:

[0077]

[0078] The calculated p nAfter rounding to the nearest hundred, adjust the power generation output. For example, if the original total power generation output p0 is 5000MW and p=1.05, then p n =4762MW, rounded to the nearest hundred, the value is 4800MW. Similarly, if the current ring network state is the ring network input state, but the p value is very small, it means that the output of the power generation side is insufficient. The stronger the necessity of increasing the output of the power generation side, the more output needs to be increased according to the formula Sure.

[0079] Based on the above method embodiment, the present invention provides a corresponding device embodiment.

[0080] like Figure 2 As shown, an embodiment of the present invention provides an operation control device of a power system, comprising: a data acquisition module and a control module;

[0081] The data acquisition module is used to obtain the total line power before the power system accident occurs, the current ring network state, the number of days between regulation and control, the first cut-off coefficient corresponding to the current ring network state, the second cut-off coefficient corresponding to the ring network state after switching the ring network state, the first cut-off amount base value corresponding to the current ring network state, and the second cut-off amount base value corresponding to the ring network state after switching the ring network state; wherein, the ring network state includes: the ring network input state and the ring network exit state; when the current ring network state is the ring network exit state, the first cut-off coefficient is greater than the second cut-off coefficient, and the first cut-off amount base value is greater than the second cut-off amount base value;

[0082] The control module is used to determine the machine cutting amount difference threshold according to the control interval days; and control the current ring network state according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value.

[0083] In a preferred embodiment, the current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value, including:

[0084] Determine a selected resection amount base value according to the first resection amount base value, the second resection amount base value and the maximum value function;

[0085] When the total line power before the accident occurs is greater than the selected removal amount base value, a first relationship between the first removal coefficient and the second removal coefficient is determined according to the current ring network state;

[0086] Determine a second relationship between the machine cutting amount difference and the machine cutting amount difference threshold value according to the first relationship and a preset machine cutting amount function; wherein the preset machine cutting amount function is determined according to the total line power before the accident occurs, the machine cutting amount difference threshold value, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value;

[0087] The current ring network state is regulated according to the second relationship.

[0088] In a preferred embodiment, the current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value, including:

[0089] Determine a selected resection amount base value according to the first resection amount base value, the second resection amount base value and the maximum value function;

[0090] When the total line power before the accident is not greater than the selected removal amount base value, the first removal amount under the current ring network state is calculated according to the first removal coefficient, the first removal amount base value and the total line power before the accident;

[0091] Calculate the second cutting amount after switching the ring network state according to the second cutting coefficient, the second cutting amount base value and the total line power before the accident occurs;

[0092] Calculating a cutting amount difference according to the first cutting amount and the second cutting amount;

[0093] The current ring network state is regulated according to the machine cutting quantity difference and the machine cutting quantity difference threshold.

[0094] In a preferred embodiment, it also includes an output control module;

[0095] The output control module is used to obtain the total output of the power system generation side before the accident occurs when the current ring network state cannot be switched; calculate the total output to be adjusted on the power system generation side after the accident occurs according to the total line power before the accident occurs, the total output of the power system generation side before the accident occurs, the first cut-off coefficient, the second cut-off coefficient, the first cut-off base value, the second cut-off base value and the number of days of control interval; and control the output of the power system generation side according to the total output to be adjusted.

[0096] It should be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the accompanying drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. A person of ordinary skill in the art may understand and implement it without paying any creative effort.

[0097] Those skilled in the art can clearly understand that for the sake of convenience and brevity, the specific working process of the device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0098] Based on the above method item embodiments, the present invention provides corresponding terminal device item embodiments.

[0099] An embodiment of the present invention provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, an operation and control method of an electric power system as described in any one of the present invention is implemented.

[0100] The terminal device may be a computing device such as a desktop computer, a notebook, a PDA, a cloud server, etc. The terminal device may include, but is not limited to, a processor and a memory.

[0101] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of the terminal device, and uses various interfaces and lines to connect various parts of the entire terminal device.

[0102] The memory can be used to store the computer program, and the processor realizes various functions of the terminal device by running or executing the computer program stored in the memory and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application required for a function, etc.; the data storage area can store data created according to the use of the mobile phone, etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Med ia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0103] Based on the above method item embodiments, the present invention provides a corresponding storage medium item embodiment.

[0104] An embodiment of the present invention provides a storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the storage medium is located is controlled to execute an operation and control method of an electric power system as described in any one of the present inventions.

[0105] The storage medium is a computer-readable storage medium, and the computer program is stored in the computer-readable storage medium. When the computer program is executed by the processor, the steps of each of the above-mentioned method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium.

[0106] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for controlling the operation of a power system, characterized in that: include: Obtain the total line power before the power system accident occurs, the current ring network state, the number of days between regulation and control, the first cut-off coefficient corresponding to the current ring network state, the second cut-off coefficient corresponding to the ring network state after switching the ring network state, the first cut-off amount base value corresponding to the current ring network state, and the second cut-off amount base value corresponding to the ring network state after switching the ring network state; wherein, the ring network state includes: the ring network input state and the ring network exit state; when the current ring network state is the ring network exit state, the first cut-off coefficient is greater than the second cut-off coefficient, and the first cut-off amount base value is greater than the second cut-off amount base value; Determine the machine cutting amount difference threshold value according to the control interval days; The current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value.

2. The operation control method of a power system according to claim 1, characterized in that: The current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value, including: Determine a selected resection amount base value according to the first resection amount base value, the second resection amount base value and the maximum value function; When the total line power before the accident occurs is greater than the selected removal amount base value, a first relationship between the first removal coefficient and the second removal coefficient is determined according to the current ring network state; Determine a second relationship between the machine cutting amount difference and the machine cutting amount difference threshold value according to the first relationship and a preset machine cutting amount function; wherein the preset machine cutting amount function is determined according to the total line power before the accident occurs, the machine cutting amount difference threshold value, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value; The current ring network state is regulated according to the second relationship.

3. The operation control method of a power system according to claim 1, characterized in that: The current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value, including: Determine a selected resection amount base value according to the first resection amount base value, the second resection amount base value and the maximum value function; When the total line power before the accident is not greater than the selected removal amount base value, the first removal amount under the current ring network state is calculated according to the first removal coefficient, the first removal amount base value and the total line power before the accident; Calculate the second cutting amount after switching the ring network state according to the second cutting coefficient, the second cutting amount base value and the total line power before the accident occurs; Calculating a cutting amount difference according to the first cutting amount and the second cutting amount; The current ring network state is regulated according to the machine cutting quantity difference and the machine cutting quantity difference threshold.

4. The operation control method of a power system according to claim 1, characterized in that: Also includes: When the current ring network state cannot be switched, the total output of the power generation side of the power system before the accident occurs is obtained; Calculate the total output to be adjusted on the power generation side of the power system after the accident based on the total line power before the accident, the total output on the power generation side of the power system before the accident, the first cut-off coefficient, the second cut-off coefficient, the first cut-off base value, the second cut-off base value, and the number of days between adjustments and controls; The output of the power generation side of the power system is regulated according to the total output to be adjusted.

5. An operation control device for an electric power system, characterized in that: include: Data acquisition module and control module; The data acquisition module is used to obtain the total line power before the power system accident occurs, the current ring network state, the number of days between regulation and control, the first cut-off coefficient corresponding to the current ring network state, the second cut-off coefficient corresponding to the ring network state after switching the ring network state, the first cut-off amount base value corresponding to the current ring network state, and the second cut-off amount base value corresponding to the ring network state after switching the ring network state; wherein, the ring network state includes: the ring network input state and the ring network exit state; when the current ring network state is the ring network exit state, the first cut-off coefficient is greater than the second cut-off coefficient, and the first cut-off amount base value is greater than the second cut-off amount base value; The control module is used to determine the machine cutting amount difference threshold according to the control interval days; and control the current ring network state according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value.

6. The operation control device of an electric power system according to claim 5, characterized in that: The current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value, including: Determine a selected resection amount base value according to the first resection amount base value, the second resection amount base value and the maximum value function; When the total line power before the accident occurs is greater than the selected removal amount base value, a first relationship between the first removal coefficient and the second removal coefficient is determined according to the current ring network state; Determine a second relationship between the machine cutting amount difference and the machine cutting amount difference threshold value according to the first relationship and a preset machine cutting amount function; wherein the preset machine cutting amount function is determined according to the total line power before the accident occurs, the machine cutting amount difference threshold value, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value; The current ring network state is regulated according to the second relationship.

7. The operation control device of an electric power system according to claim 5, characterized in that: The current ring network state is regulated according to the current ring network state, the total line power before the accident, the machine cutting amount difference threshold, the first cutting coefficient, the second cutting coefficient, the first cutting amount base value and the second cutting amount base value, including: Determine a selected resection amount base value according to the first resection amount base value, the second resection amount base value and the maximum value function; When the total line power before the accident is not greater than the selected removal amount base value, the first removal amount under the current ring network state is calculated according to the first removal coefficient, the first removal amount base value and the total line power before the accident; Calculate the second cutting amount after switching the ring network state according to the second cutting coefficient, the second cutting amount base value and the total line power before the accident occurs; Calculating a cutting amount difference according to the first cutting amount and the second cutting amount; The current ring network state is regulated according to the machine cutting quantity difference and the machine cutting quantity difference threshold.

8. The operation control device of an electric power system according to claim 5, characterized in that: It also includes an output control module; The output control module is used to obtain the total output of the power generation side of the power system before the accident occurs when the current ring network state cannot be switched; calculate the total output to be adjusted on the power generation side of the power system after the accident occurs according to the total line power before the accident occurs, the total output of the power generation side of the power system before the accident occurs, the first cut-off coefficient, the second cut-off coefficient, the first cut-off amount base value, the second cut-off amount base value and the number of days of control interval; The output of the power generation side of the power system is regulated according to the total output to be adjusted.

9. A terminal device, characterized in that: The method comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, an operation and control method of an electric power system as described in any one of claims 1 to 4 is implemented.

10. A storage medium, characterized in that: The storage medium includes a stored computer program, wherein when the computer program is executed, the device where the storage medium is located is controlled to execute the operation and control method of the power system according to any one of claims 1 to 4.

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