CN109066661B

CN109066661B - Electricity selling deviation control method and electricity selling control system

Info

Publication number: CN109066661B
Application number: CN201810994258.6A
Authority: CN
Inventors: 李华印; 于槐林; 尧军; 邢馥麟; 石大鹏
Original assignee: Xinzhi Energy System Control Co ltd
Current assignee: Xinzhi Energy System Control Co ltd
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2020-08-18
Anticipated expiration: 2038-08-29
Also published as: CN109066661A

Abstract

The invention discloses a power selling deviation control method and a power selling control system, wherein the method comprises the following steps: obtaining bidding electric quantity, long coordination electric quantity and load prediction electric quantity of a user; receiving actual electricity consumption of a user; acquiring a power selling deviation result according to the bidding electric quantity, the long coordination electric quantity, the load forecasting electric quantity and the actual power consumption; when the power selling deviation result is not in the preset range, sending the power selling deviation result; and the power selling deviation result is used for determining a corresponding control instruction, and the control instruction is used for indicating and adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load. The electricity selling deviation control method and the electricity selling control system disclosed by the invention can balance the electricity selling deviation.

Description

Electricity selling deviation control method and electricity selling control system

Technical Field

The invention relates to the power technology, in particular to a power selling deviation control method and a power selling control system.

Background

At present, the power reform and supply side reform in China develop rapidly, a large number of power selling companies are registered in China, along with the continuous expansion of the trading scale of a power market, the perfection of power selling policies and trading rules and the increasingly fierce market competition, how to avoid the evaluation cost caused by power selling deviation becomes one of the important works of the power selling companies, and in the prior art, an effective solution for the problem does not exist.

Disclosure of Invention

In order to solve the technical problem, the invention provides a power selling deviation control method and a power selling control system, which can balance the power selling deviation.

In order to achieve the object of the present invention, in a first aspect, the present invention provides a power selling deviation control method, including:

obtaining bidding electric quantity, long coordination electric quantity and load prediction electric quantity of a user; receiving actual electricity consumption of a user; acquiring a power selling deviation result according to the bidding electric quantity, the long coordination electric quantity, the load prediction electric quantity and the actual power consumption;

when the power selling deviation result is not in a preset range, sending the power selling deviation result; and the power selling deviation result is used for determining a corresponding control instruction, and the control instruction is used for indicating and adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load.

In a second aspect, the present invention provides a power selling deviation control method, including:

monitoring state information of the power generation equipment, the energy storage equipment and the load; sending state information of the power generation equipment, the energy storage equipment and the load, and receiving a corresponding control instruction obtained according to the state information and a power selling deviation result; the electricity selling deviation result is obtained according to the bidding electricity quantity, the long-term coordination electricity quantity, the load forecasting electricity quantity and the actual electricity consumption quantity of the user;

and adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load according to the control command.

In a third aspect, the present invention provides a method for controlling electricity selling deviation, including:

receiving a power selling deviation result and state information of power generation equipment, energy storage equipment and loads; the electricity selling deviation result is obtained according to the bidding electricity quantity, the long-term coordination electricity quantity, the load forecasting electricity quantity and the actual electricity consumption quantity of the user;

and sending a corresponding control instruction according to the power selling deviation result and the state information of the power generation equipment, the energy storage equipment and the load, wherein the control instruction is used for indicating and adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load.

In a fourth aspect, the present invention provides an electricity selling control system, including: the system comprises a power selling deviation control system for executing the method according to the embodiment of the first aspect, a demand side management system for executing the method according to the embodiment of the second aspect and a power grid central control system for executing the method according to the embodiment of the third aspect.

According to the electricity selling deviation control method and the electricity selling control system provided by the embodiment of the invention, based on demand side management, the electricity selling deviation control system acquires an electricity selling deviation result according to the competitive electricity quantity, the long-time electricity quantity, the load forecast electricity quantity and the actual electricity consumption, the demand side management system monitors the state information of the power generation equipment, the energy storage equipment and the load, the power grid central control system generates a corresponding control instruction according to the electricity selling deviation result given by the electricity selling deviation control system and the state information of the power generation equipment, the energy storage equipment and the load collected by the demand side management system, and sends the corresponding control instruction to the demand side management system, and the demand side management system adjusts the state of at least one of the power generation equipment, the energy storage equipment and the load according to the control instruction so as to realize the adjustment of the electricity selling deviation, thereby realizing the management of the electricity quantity and balancing the electricity selling. On the basis, the assessment cost of the electricity selling company due to the electricity selling deviation can be effectively reduced.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a schematic structural diagram of an electricity selling control system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an electricity selling control system according to a second embodiment of the present invention;

fig. 3 is a flowchart of a power selling deviation control method according to an embodiment of the present invention;

fig. 4 is a flowchart of a power selling deviation control method according to a second embodiment of the present invention;

fig. 5 is a flowchart of a power selling deviation control method according to a third embodiment of the present invention;

fig. 6 is a flowchart of a power selling deviation control method according to a fourth embodiment of the present invention;

fig. 7 is a power system topology diagram of a power selling control system according to an embodiment of the present invention;

fig. 8 is a flowchart of a power selling deviation control method according to the fifth embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.

According to the electricity selling deviation control method and the electricity selling control system based on the demand side management, the removal or the input of the load can be managed, the removal or the input of the power generation equipment can also be managed, or the output power of the power generation equipment is improved or reduced through the demand side management; the charging or discharging of the energy storage equipment can be managed, the management of electric quantity is realized, the electricity selling deviation is balanced, and the examination cost of the electricity selling company due to the electricity selling deviation is effectively reduced.

Fig. 1 is a schematic structural diagram of an electricity selling control system according to an embodiment of the present invention, and as shown in fig. 1, the electricity selling control system according to the embodiment of the present invention includes: the system comprises a power selling deviation control system 11, a demand side management system 12 and a power grid central control system 13. Wherein, every two systems in the electricity selling deviation control system 11, the demand side management system 12 and the power grid central control system 13 are connected with each other. The electricity selling control system provided by the embodiment of the invention comprises a power grid central control system 13, a demand side management system 12 and an electricity selling deviation control system 11, wherein the top layer of the hierarchical structure is the power grid central control system 13, the middle layer is the demand side management system 12, the bottom layer is the electricity selling deviation control system 11, top layer data can be sent to the bottom layer electricity selling deviation control system 11 through the demand side management system 12, and bottom layer data can return to the top layer power grid central control system 13 to form a closed loop system.

Different regions can be simultaneously controlled by a plurality of demand side management systems 12, and finally the electricity selling deviation is controlled in a check-free range. Fig. 2 is a schematic structural diagram of an electricity selling control system according to a second embodiment of the present invention, and as shown in fig. 2, on the basis of the foregoing embodiment, the electricity selling control system according to the second embodiment of the present invention may further include a network management system 14. The network management system 14 is connected to the demand side management system 12 and the grid central control system 13, respectively. The electricity selling control system provided by the embodiment of the invention comprises a power grid central control system 13, a network management system 14, a demand side management system 12 and an electricity selling deviation control system 11, wherein the topmost layer of the hierarchical structure is the power grid central control system 13, the middle layer is the network management system 14, the lower layer is the demand side management system 12, the bottom layer is the electricity selling deviation control system 11, top layer data can be sent to the bottom layer electricity selling deviation control system 11 through the network management system 14 and the demand side management system 12, and bottom layer data can return to the top layer power grid central control system 13 to form a closed-loop system.

Fig. 3 is a flowchart of a power selling deviation control method according to an embodiment of the present invention, and as shown in fig. 3, an execution main body of the power selling deviation control method according to the embodiment of the present invention is the power selling deviation control system 11 according to the above embodiment, where the method includes:

s301: and acquiring bidding electric quantity, long service electric quantity and load prediction electric quantity of the user.

Specifically, the long-term electricity coordination amount is a fixed electricity amount used by a user negotiated by an electricity selling company and a power plant for a long time, the bidding electricity amount is an electricity amount obtained by the electricity selling company through competing bidding according to the electricity usage condition of the user within a preset time, and the bidding electricity amount is a variable electricity amount which can be adjusted according to the long-term electricity coordination amount and the load prediction electricity amount. Wherein, the preset time can be one month, namely the bidding electric quantity is monthly bidding electric quantity; the preset time can also be one day, namely the bidding electric quantity is daily bidding electric quantity.

Specifically, as shown in fig. 1 and 2, the power sale deviation control system 11 may include a bid management system, a long-term power consumption management system, a load prediction system, and a deviation management system. The bidding management system is used for distributing corresponding bidding electric quantity for different users; the long service electricity quantity management system is used for distributing corresponding long service electricity quantities to different users; the load prediction system is used for distributing corresponding load prediction electric quantity for different users; and the deviation management system is used for acquiring the bidding electric quantity, the long coordination electric quantity and the load forecasting electric quantity corresponding to each user from the bidding management system, the long coordination electric quantity management system and the load forecasting system respectively.

The bidding management system can be a system for replacing the user electricity quantity for the electricity selling company and distributing the bidding electricity quantity (such as monthly bidding electricity quantity or daily bidding electricity quantity) for the user. Optionally, the allocating, by the bid management system, corresponding bid amounts to different users may include: and the bidding management system distributes corresponding bidding electric quantity to the user according to the long service electric quantity and the load forecasting electric quantity of the user. That is, the bid amount is changed from time to time according to the user's long contract amount and load prediction amount.

The long-term electricity coordination management system can be used for replacing the user electricity quantity for the electricity selling company and distributing the long-term electricity coordination management system for the user. Optionally, the allocating, by the long-term co-power management system, corresponding long-term co-power for different users may include: and the long-service electricity quantity management system distributes corresponding long-service electricity quantities to the users according to the electricity quantities input by the electricity selling managers.

The load forecasting system can be a system for brokering user electric quantity for an electric selling company and distributing load forecasting electric quantity for users. Optionally, the allocating, by the load prediction system, corresponding load prediction electric quantities for different users may include: and the load forecasting system distributes corresponding load forecasting electric quantity for the user according to the electric quantity information of the load. That is, the load prediction electric quantity is changed from time to time according to the electric quantity information of the load.

S302: the actual power usage of the user is received.

Specifically, the electricity sales deviation control system 11 may receive the actual electricity usage amount of the user, which is sent from the demand side management system 12. In this embodiment, the deviation management system in the electricity sales deviation control system 11 may be connected to the demand side management system 12, and receive the actual electricity consumption of the corresponding user sent by the demand side management system 12.

S303: and acquiring a power selling deviation result according to the bidding electric quantity, the long coordination electric quantity, the load forecasting electric quantity and the actual power consumption.

Specifically, the deviation management system may determine a power selling deviation result according to the actual power consumption acquired from the demand side management system 12 and the bid power amount, the long power amount and the load predicted power amount acquired from the bid management system, the long power amount management system and the load prediction system, and may know whether the power selling power amount is less than the actual power consumption or the predicted power amount according to the determined power selling deviation result.

S304: when the power selling deviation result is not in the preset range, sending the power selling deviation result; and the power selling deviation result is used for determining a corresponding control instruction, and the control instruction is used for indicating and adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load.

The preset range can be determined according to the actual electricity selling assessment deviation range, and can be +/-2% for example.

Specifically, the deviation management system in the electricity selling deviation control system 11 may be connected to the power grid central control system 13, and the deviation management system obtains the electricity selling deviation result of the corresponding user according to the competitive electric quantity, the long-term coordination electric quantity, the load prediction electric quantity, and the actual electricity consumption. And when the electricity selling deviation result is not in the preset range, sending the electricity selling deviation result to the power grid central control system 13, so that the power grid central control system 13 determines a corresponding control instruction according to the electricity selling deviation result and sends the control instruction to the demand side management system 12, and the demand side management system 12 correspondingly adjusts the state of at least one of the power generation equipment, the energy storage equipment and the load according to the control instruction.

In this embodiment, the electricity selling deviation control system 11 obtains the bid amount of electricity, the long amount of electricity consumed by the user, and the load predicted amount of electricity, and receives the actual amount of electricity consumed by the user, which is sent by the demand side management system 12, obtains an electricity selling deviation result according to the bid amount of electricity, the long amount of electricity consumed by the user, the load predicted amount of electricity, and the actual amount of electricity consumed, and sends the electricity selling deviation result to the power grid central control system 13 when the electricity selling deviation result is not within a preset range.

According to the electricity selling deviation control method provided by the embodiment of the invention, based on demand side management, the electricity selling deviation control system obtains an electricity selling deviation result according to the competitive electricity quantity, the long-term electricity quantity, the load forecasting electricity quantity and the actual electricity consumption quantity, and when the electricity selling deviation result is not in a preset range, the electricity selling deviation result is sent; and the power selling deviation result is used for determining a corresponding control instruction, and the control instruction is used for indicating and adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load so as to realize the adjustment of the power selling deviation, thereby realizing the management of the electric quantity and balancing the power selling deviation. On the basis, the assessment cost of the electricity selling company due to the electricity selling deviation can be effectively reduced.

Further, in the embodiment shown in fig. 3, obtaining the electricity selling deviation result according to the bid amount of electricity, the long contract amount of electricity, the load forecast amount of electricity and the actual electricity consumption may include:

the sum of the competitive electric quantity and the long coordinating electric quantity is differed with the load forecasting electric quantity to obtain a power selling deviation result; or, the actual electricity consumption and the load forecast electricity are differentiated to obtain the electricity selling deviation result.

Specifically, in this embodiment, the sum of the bid electric quantity and the long term electricity consumption counted by the electricity selling deviation control system 11 may be used as the electricity selling transaction electric quantity a, the difference between the electricity selling transaction electric quantity a and the load prediction electric quantity C counted by the electricity selling deviation control system 11 may be used as the electricity selling deviation result, and the difference between the electricity selling transaction electric quantity a and the actual electricity consumption B monitored by the demand side management system 12 may also be used as the electricity selling deviation result.

Further, in the embodiment shown in fig. 3, before obtaining the bid electric quantity, the long contract electric quantity and the load prediction electric quantity of the user, the power selling deviation control method provided in the embodiment of the present invention may further include: and receiving the power consumption information of the power generation equipment, the energy storage equipment and the load, and adjusting the load to predict the electric quantity according to the power consumption information. In this embodiment, the load predicted electric quantity may change at any time according to the power consumption information of the load, thereby implementing continuous adjustment of the load predicted electric quantity, implementing management of the electric quantity, and further balancing the electricity selling deviation.

Further, in the embodiment shown in fig. 3, before obtaining the bid electric quantity, the long contract electric quantity and the load prediction electric quantity of the user, the power selling deviation control method provided in the embodiment of the present invention may further include: and adjusting the bidding electric quantity according to the long service electric quantity and the load forecasting electric quantity. For example, if the long contracted power amount is 80 and the load prediction power amount is 100, the bid power amount is 20; if the long contract power amount is 80 and the load prediction power amount is 110, the bid power amount is 30.

Further, in the embodiment shown in fig. 3, the bid amount includes a monthly bid amount or a daily bid amount. When the electricity bid amount is monthly bid amount, the electricity selling deviation control system 11 may obtain the electricity selling deviation result at an interval of one month, and may calculate the electricity selling deviation result once per month. When the bidding electric quantity is daily bidding electric quantity, the electricity selling deviation control system 11 may obtain the electricity selling deviation result at intervals of one day, and may calculate the electricity selling deviation result once a day.

Fig. 4 is a flowchart of a power selling deviation control method according to a second embodiment of the present invention, and as shown in fig. 4, an execution subject of the power selling deviation control method according to the second embodiment of the present invention is the demand side management system 12 in the above embodiment, where the method includes:

s401: and monitoring the state information of the power generation equipment, the energy storage equipment and the load.

Specifically, the state information of the power generation equipment may be whether the power generation equipment is in a start state or a stop state; the state information of the energy storage device can be whether the energy storage device is in a discharging state or a charging state; the state information of the load may be whether the load is in a cut-off state or a put-in state. The power generation equipment can be wind power generation equipment, gas power generation equipment, photovoltaic power generation equipment or other equipment capable of generating electric energy, such as a generator. The energy storage device may be a composite device for storing electrical energy, which may be divided into a medium-voltage energy storage device and a low-voltage energy storage device, and may also be divided into an electrical energy storage device and a cold and hot energy storage device. The load can be user distribution equipment and consumer, and the load can divide into one-level load, second grade load, tertiary load, and its concrete realization principle and classification are the same with prior art, and this embodiment is not repeated herein.

Specifically, as shown in fig. 1 and 2, the demand side management system 12 may include: the system comprises a first data acquisition system, a power supply/energy storage Controller (MC for short) and a Load Controller (LC for short). Wherein, the first data acquisition system is respectively connected with the MC and the LC. And the first data acquisition system is used for acquiring the state information of the power generation equipment and the energy storage equipment from the MC, acquiring the state information of the load from the LC, and sending the acquired state information to the power grid central control system 13 directly or through a network management system. The MC is used for being connected with the power generation equipment and the energy storage equipment respectively; LC for connecting with a load.

It should be noted that, when there is one demand side management system 12, the state information acquired by the demand side management system may be directly sent to the power grid central control system 13; when there are a plurality of demand side management systems 12, the collected state information is sent to the power grid central control system 13 through the network management system.

The input end of the first data acquisition system may be connected to the MC and the LC, respectively, and the output end may be connected to the grid central control system 13. The first data acquisition system may monitor status information of the power generation/energy storage devices connected to the MC and of the loads connected to the LC and send the monitored status information to the grid central control system 13.

S402: and sending the state information of the power generation equipment, the energy storage equipment and the load, and receiving a corresponding control instruction obtained according to the state information and the power selling deviation result.

And obtaining the electricity selling deviation result according to the bidding electricity quantity, the long coordination electricity quantity, the load forecasting electricity quantity and the actual electricity consumption quantity of the user.

Specifically, the first data acquisition system in the demand side management system 12 sends the monitored state information of the power generation device, the energy storage device, and the load to the power grid central control system 13, and the MC and/or LC in the demand side management system 12 may receive, directly or through the network management system, a corresponding control instruction generated by the power grid central control system 13 according to the state information and the electricity selling deviation, where the control instruction is used to instruct and adjust the state of at least one of the power generation device, the energy storage device, and the load.

It should be noted that, when there is one demand side management system 12, the control command sent by the power grid central control system 13 may be directly sent to the demand side management system 12; when there are a plurality of demand side management systems 12, the control command sent by the central grid control system 13 may be sent to the demand side management system 12 through the network management system.

S403: and adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load according to the control command.

Specifically, the input end of the MC is connected with the power grid central control system 13, and the output end of the MC is connected with the power generation equipment and the energy storage equipment; the MC may be used to adjust the state of the power generation device and/or the energy storage device accordingly when the control instruction sent by the grid central control system 13 indicates to adjust the state of the power generation device and/or the energy storage device. The LC input end is connected with the power grid central control system 13, and the LC output end is connected with a load; the LC may be used to adjust the state of the load accordingly when the control instruction sent by the grid central control system 13 indicates to adjust the state of the load.

In this embodiment, the demand side management system 12 monitors state information of the power generation equipment, the energy storage equipment, and the load, and actual power consumption of the user; sending the state information to the power grid central control system 13; and adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load according to the control instruction sent by the power grid central control system 13.

According to the electricity selling deviation control method, the state information of the power generation equipment, the energy storage equipment and the load is monitored through a demand side management system based on demand side management; sending state information of the power generation equipment, the energy storage equipment and the load, and receiving a corresponding control instruction obtained according to the state information and a power selling deviation result; and adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load according to the control instruction so as to realize the adjustment of the electricity selling deviation, thereby realizing the management of the electric quantity and balancing the electricity selling deviation. On the basis, the assessment cost of the electricity selling company due to the electricity selling deviation can be effectively reduced.

Further, in the above embodiments, the LC may be a switch, wherein the LC may be disposed between the power source and the power interface of the load. When the load state is adjusted according to the control command sent by the grid central control system 13, the LC is opened or closed accordingly. The MC may be disposed between the power source and the power source interface of the energy storage device/power generation device, and when the control instruction sent by the power grid central control system 13 indicates to adjust the state of at least one of the power generation device and the energy storage device, the MC may correspondingly control the power generation device to be turned on or off, or increase or decrease the output power of the power generation device, or indicate the energy storage device to charge or discharge.

Further, in the embodiment shown in fig. 4, when the difference between the predicted power consumption or the actual power consumption of the load and the sum of the bid power consumption and the long power consumption is greater than zero as a result of the power sale deviation, and the difference is not within a preset range, the state of at least one of the power generation equipment, the energy storage equipment and the load is adjusted according to the control instruction, including at least one of the following manners or any combination thereof:

the method comprises the following steps of firstly, disconnecting a load controller connected with a load;

starting the power generation equipment or improving the output power of the power generation equipment in a second mode;

and thirdly, discharging the energy storage device.

Specifically, when the predicted load electricity consumption C is greater than the electricity selling transaction electricity consumption a and is outside the preset range, or the actual electricity consumption B is greater than the electricity selling transaction electricity consumption a and is outside the preset range, the state of at least one of the electricity generating equipment, the energy storage equipment and the load can be adjusted by cutting off the load, starting the electricity generating equipment or increasing the output power of the electricity generating equipment, and indicating the discharge of the energy storage equipment, or a combination thereof, so as to adjust the electricity selling deviation, and the actual electricity consumption B and the electricity selling transaction electricity consumption a are always kept in the deviation range of the checking-free check.

Further, in the embodiment shown in fig. 4, when the difference between the predicted power consumption or the actual power consumption of the load and the sum of the bid power consumption and the long power consumption is smaller than zero as a result of the power sale deviation and is not within a preset range, the state of at least one of the power generation equipment, the energy storage equipment and the load is adjusted according to the control instruction, including at least one of the following manners or any combination thereof:

the method comprises the following steps that firstly, a load controller connected with a load is closed;

the second mode is to close the power generation equipment or reduce the output power of the power generation equipment;

and thirdly, charging the energy storage device.

Specifically, when the predicted load electricity consumption C is smaller than the electricity selling transaction electricity consumption a and is outside the preset range, or the actual electricity consumption B is smaller than the electricity selling transaction electricity consumption a and is outside the preset range, the state of at least one of the electricity generating equipment, the energy storage equipment and the load can be adjusted by means of any one or a combination of putting the load into the electricity generating equipment, turning off the electricity generating equipment, reducing the output power of electricity generation and indicating the charge of the energy storage equipment, so that the deviation of electricity selling is adjusted, and the actual electricity consumption B and the electricity selling transaction electricity consumption a are always kept in the deviation range of non-checking.

Further, in the embodiment shown in fig. 4, the method for controlling electricity selling deviation according to the embodiment of the present invention further includes: and monitoring power consumption information of the power generation equipment, the energy storage equipment and the load, and sending the power consumption information, wherein the power consumption information is used for indicating and adjusting the load prediction electric quantity.

Specifically, as shown in fig. 1 and 2, the demand side management system 12 may further include: and the second data acquisition system can be used for acquiring the power consumption information of the power generation equipment, the energy storage equipment and the load and sending the power consumption information to the power selling deviation control system 11. So that the electricity selling deviation control system 11 adjusts the load predicted electricity quantity according to the electricity consumption information before acquiring the user's competitive electricity quantity, long service electricity quantity and load predicted electricity quantity.

The second data acquisition system may be connected to the MC and the LC, respectively, and is configured to acquire, from the MC, power consumption information of the power generation device and/or the energy storage device connected to the MC, and acquire, from the LC, power consumption information of a load connected to the LC. It should be noted that the information of the power consumption may include, but is not limited to, the power consumption time and the power consumption.

In this embodiment, the load predicted electric quantity may change at any time according to the power consumption information of the load, thereby implementing continuous adjustment of the load predicted electric quantity, implementing management of the electric quantity, and further balancing the electricity selling deviation.

Further, in the embodiment shown in fig. 4, the first data acquisition system may also be connected to the electricity selling deviation control system 11, specifically, to the deviation management system in the electricity selling deviation control system 11. The first data acquisition system is also used for monitoring the actual power consumption of the user and sending the monitored actual power consumption to the power selling deviation control system 11. Optionally, the monitoring, by the first data acquisition system, the actual power consumption of the user includes: the total power consumption of the load is collected from the LC, and is sent to the power selling deviation control system 11 as the actual power consumption of the user.

It should be noted that the first data acquisition system may include an energy storage/power generation monitoring system and a load controller monitoring system, and the energy storage/power generation monitoring system may be formed by an electrical real-time acquisition device, and may be configured to monitor status information of a power generation device/an energy storage device connected to the MC, and send the monitored status information to the power grid central control system 13. The load controller monitoring system may be composed of an electrical real-time acquisition device, and may be configured to monitor status information of a load connected to the LC, and send the monitored status information to the power grid central control system 13; the load controller monitoring system may also be configured to monitor the total power usage of the loads connected to the LC and send the total power usage as actual power usage to the monitored status information to the electricity sales deviation control system 11.

Optionally, the energy storage/power generation monitoring system may also monitor electrical parameters of the power generation device/energy storage device connected to the MC, and send the electrical parameters to the grid central control system 13 for storage. The load controller monitoring system can also monitor the electrical parameters of the load connected with the LC and send the electrical parameters to the central control system 13 of the power grid for storage.

Optionally, the first data acquisition system may further include an electrical parameter acquisition system, where the electrical parameter acquisition system may be formed by intelligent acquisition devices such as an intelligent instrument, a relay protection device, a Programmable Logic Controller (PLC), and a transformer, and is configured to acquire electrical analog quantities and digital quantities of each loop of the power grid, and send the electrical analog quantities and digital quantities to the power grid central control system 13 for storage.

According to the electricity selling deviation control method provided by the embodiment of the invention, the first data acquisition system and/or the second data acquisition system can be respectively connected with the MC and the LC, so that the real-time information of the power generation equipment and the energy storage equipment connected with the MC and the real-time information of the load connected with the LC can be monitored, the operation conditions of the power generation equipment, the energy storage equipment and the load can be timely obtained, and the utilization rates of the power generation equipment, the energy storage equipment and the load can be more efficiently exerted.

Further, in the embodiment shown in fig. 4, the demand side management system 12 may be multiple, and respectively correspond to different regions one by one; the demand side management system 12 monitors the state information of the power generation equipment, the energy storage equipment and the load of the corresponding region, and the actual power consumption of the users of the corresponding region.

The demand side management system 12 sends the status information to the grid central control system 13, and may include: each demand side management system 12 sends the state information of the power generation equipment, the energy storage equipment and the load of the corresponding region to the power grid central control system 13 through the network management system 14.

The grid central control system 13 sends a corresponding control command to the demand side management system 12, and may include: the power grid central control system 13 sends the control command of the corresponding region to the demand side management system 12 corresponding to the region through the network management system 14.

Specifically, as shown in fig. 2, the network management system 14 may be composed of a system side communication converter, a plurality of network management units, a plurality of segments of network communication buses, and a client side communication bus. The plurality of network management units are respectively corresponding to the different demand side management systems 12, and each network management unit may include a client communication converter and a communication manager. The connection relationship of each module is as follows: a plurality of user side communication converters are connected into a ring network through a network communication bus, one end of the system side communication converter is connected with the network communication bus, and the other end of the system side communication converter is used for being connected with a power grid central control system 13; the user side communication converter and the communication manager are connected with one end of a user side communication bus in sequence, and the other end of the user side communication bus is used for being connected with the demand side management system 12.

In this embodiment, when there are a plurality of demand side management systems 12, each demand side management system 12 may include a first data acquisition system, at least one power supply/energy storage Controller (micro Controller, abbreviated as MC), and at least one Load Controller (Load Controller, abbreviated as LC). Each first data acquisition system can acquire information of power generation equipment, energy storage equipment, load state information and the like of one region. One MC may be connected to one power generation device or energy storage device and one LC may be connected to one load, and the number of MCs and LCs in each demand-side management system 12 may vary depending on the number of power generation devices/energy storage devices and loads, respectively, in its locale. Each of the first data acquisition systems may be connected to the network management system 14, and in particular, a first data acquisition system may be connected to a network management unit via a client communication bus. The connection relationship and implementation function of the first data acquisition system, the MC and the LC included in each demand side management system 12 are the same as those in the foregoing embodiment, and details are not described herein in this embodiment.

It should be noted that in this embodiment, the first data collection system sends collected information including state information of the power generation device, the energy storage device, and the load to a corresponding network management unit in the network management system 14, and sends the information to the power grid central control system 13 through the network management unit. The power grid central control system 13 sends the control command of the corresponding region to the MC and/or LC corresponding to the region through the network management system 14.

Optionally, each demand side management system 12 may further include a second data acquisition system, and each second data acquisition system may acquire power consumption information of power generation equipment, energy storage equipment, and load in one region, and send the acquired information to the electricity selling deviation control system 11. The connection relationship and the implementation function of the second data acquisition system are the same as those in the above embodiments, and are not described herein again.

Fig. 5 is a flowchart of a power selling deviation control method according to a third embodiment of the present invention, and as shown in fig. 5, an execution main body of the power selling deviation control method according to the third embodiment of the present invention is the power grid central control system 13 in the foregoing embodiment, and the method includes:

s501: and receiving the power selling deviation result and the state information of the power generation equipment, the energy storage equipment and the load.

In this embodiment, the central power grid control system 13 may receive the power selling deviation result sent by the power selling deviation control system 11, and receive the state information of the power generation equipment, the energy storage equipment and the load sent by the demand side management system 12 directly or through the network management system 13.

Specifically, as shown in fig. 1 and fig. 2, the central grid control system 13 may include a database device for receiving and storing the status information of the power generation devices, the energy storage devices and the loads, which is sent by the demand-side management system 12 directly or through the network relationship system 13, and for receiving and storing the electricity-selling deviation result sent by the electricity-selling deviation control system 11.

S502: and sending a corresponding control instruction according to the power selling deviation result and the state information of the power generation equipment, the energy storage equipment and the load, wherein the control instruction is used for indicating and adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load.

In this embodiment, the power grid central control system 13 may further include a processor, which is configured to generate a corresponding control instruction according to the power selling deviation result and the state information of the power generation device, the energy storage device, and the load, and send the control instruction. Specifically, the database device is connected to the processor, and the processor acquires the power selling deviation result and the state information of the power generation device, the energy storage device, and the load, which are used for generating the control command, from the database device, and sends the generated control command to the demand side management system 12.

It should be noted that, when there is one demand side management system 12, the state information acquired by the demand side management system may be directly sent to the power grid central control system 13, and the control command sent by the power grid central control system 13 may be directly sent to the demand side management system 12; when there are a plurality of demand side management systems 12, the collected state information is sent to the power grid central control system 13 through the network management system, and the control command sent by the power grid central control system 13 can be sent to the demand side management system 12 through the network management system.

In this embodiment, the power grid central control system 13 generates a corresponding control instruction according to the power selling deviation result given by the power selling deviation control system 11, in combination with the received state information of the power generation device, the energy storage device, and the load, and sends the control instruction to the demand side management system 12, where the control instruction is used to instruct to adjust the state of at least one of the power generation device, the energy storage device, and the load, so as to adjust the power selling deviation.

It should be noted that the central power grid control system 13 may obtain, according to the result of the deviation of the electricity sales, whether the electricity sales amount is less than the actual electricity consumption amount or more than the predicted electricity sales amount, and determine how to adjust the state of at least one of the power generation device, the energy storage device, and the load, such as cutting off or putting in the load, or starting or shutting down the power generation device, or indicating whether the energy storage device is charging or discharging, by combining the state information of the power generation device, the energy storage device, and the load.

The power selling deviation control method provided by the embodiment of the invention receives a power selling deviation result and the state information of power generation equipment, energy storage equipment and loads; and sending a corresponding control instruction according to the power selling deviation result and the state information of the power generation equipment, the energy storage equipment and the load, wherein the control instruction is used for indicating and adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load so as to realize the adjustment of the power selling deviation, thereby realizing the management of electric quantity and balancing the power selling deviation. On the basis, the assessment cost of the electricity selling company due to the electricity selling deviation can be effectively reduced.

Further, in the embodiment shown in fig. 5, when the difference between the predicted load power amount or the actual power consumption amount and the sum of the bid power amount and the long contract power amount is greater than zero as the result of the power sale deviation, and the difference is not within the preset range, the control instruction includes at least one of the following manners or any combination thereof:

and thirdly, discharging the energy storage device.

Further, in the embodiment shown in fig. 5, when the difference between the predicted load power amount or the actual power consumption amount and the sum of the bid power amount and the long contract power amount is less than zero as the result of the power sale deviation, and the difference is not within the preset range, the control instruction includes at least one of the following manners or any combination thereof:

and thirdly, charging the energy storage device.

Specifically, when the predicted load electricity consumption C is smaller than the electricity selling transaction electricity consumption a and is outside the preset range, or the actual electricity consumption B is smaller than the electricity selling transaction electricity consumption a and is outside the preset range, the state of at least one of the electricity generating equipment, the energy storage equipment and the load can be adjusted by means of any one or a combination of putting the load into the electricity generating equipment, turning off the electricity generating equipment, reducing the output power of the electricity generating equipment and indicating the charging of the energy storage equipment, so that the electricity selling deviation can be adjusted, and the actual electricity consumption B and the electricity selling transaction electricity consumption a are always kept in the deviation range without checking.

Fig. 6 is a flowchart of a power selling deviation control method according to a fourth embodiment of the present invention, and as shown in fig. 6, an execution main body of the power selling deviation control method according to the fourth embodiment of the present invention is the power selling control system according to the embodiment shown in fig. 1, where the method includes:

s601: the electricity selling deviation control system acquires the bidding electric quantity, the long coordination electric quantity and the load forecasting electric quantity of a user;

s602: and the demand side management system sends the actual electricity consumption of the user to the electricity selling deviation control system.

It should be noted that S601 and S602 do not have a sequential execution order, that is, S601 may be executed first, or S602 may be executed first.

S603: and the electricity selling deviation control system acquires an electricity selling deviation result according to the competitive electric quantity, the long coordinating electric quantity, the load forecasting electric quantity and the actual electricity consumption.

S604: and the electricity selling deviation control system sends an electricity selling deviation result to the power grid central control system.

S605: the demand side management system monitors state information of the power generation equipment, the energy storage equipment and the load.

S606: and the demand side management system sends the state information to the power grid central control system.

S601 to S604 and S605 to S606 do not have a sequential execution order, that is, S601 to S604 may be executed first, or S605 to S606 may be executed first.

S607: and the power grid central control system generates a corresponding control instruction according to the power selling deviation result and the state information of the power generation equipment, the energy storage equipment and the load.

S608: and the power grid central control system sends a corresponding control instruction to the demand side management system.

S609: and the demand side management system adjusts the state of at least one of the power generation equipment, the energy storage equipment and the load according to the corresponding control instruction.

It should be noted that, in the embodiment of the present invention, the electricity selling control system in the embodiment shown in fig. 1 is taken as an execution main body for explanation, and when the electricity selling control system in the embodiment shown in fig. 2 is taken as an execution main body, information exchange between the demand side management system and the power grid central control system needs to be sent through the network management system, that is, each demand side management system sends state information of the power generation equipment, the energy storage equipment and the load of the corresponding region to the power grid central control system through the network management system; the power grid central control system sends the control instruction of the corresponding region to the demand side management system 12 corresponding to the region through the network management system. The other implementation methods are the same as those shown in fig. 6, and this embodiment is not limited herein.

Fig. 7 is a power system topology diagram of an electricity selling control system according to an embodiment of the present invention, where the power system in this embodiment is a complex system in which a load switch, a power generation/energy storage device controller, a transformer, an energy storage device, a power generation device, and a load device are connected by a bus. As shown in fig. 7, the independent user 1, user 2, and user n are connected to an external power grid, respectively, and a connection point pc of the user 1, user 2, and user n is a user power consumption metering point, and is connected to a user medium voltage bus under the pc. The medium voltage bus is connected with transformers TR1, TR2 … … TRn, or is connected with medium voltage equipment such as a load 7#, or is connected with medium voltage generating equipment 3 #. And a low-voltage bus is connected below the transformer, and a load 1# and a load n # are connected below the low-voltage bus, or a low-voltage generating device 1#, a generating device n # and an energy storage device 1# are connected below the low-voltage bus. The load switches are LC, and LC is connected with each load one by one and simultaneously connected with the switch between the load and the low-voltage bus to control the connection or disconnection of the load. The power generation/energy storage equipment controller is MC, is connected with each power generation/energy storage equipment one by one, and is simultaneously connected with a switch between the power generation/energy storage equipment and the low-voltage bus to control the connection or disconnection of the power generation/energy storage equipment. And a data acquisition system in the demand side management system acquires each switching signal and electric quantity information and the pc electric quantity information, transmits the acquired information to a network management unit in a network management system, and then transmits the acquired information to a power grid central control system. Wherein the data acquisition system may comprise a first data acquisition system and/or a second data acquisition system.

For example, fig. 8 is a flowchart of a power selling deviation control method according to a fifth embodiment of the present invention, and as shown in fig. 8, an execution subject of the power selling deviation control method according to the fifth embodiment of the present invention may be the power selling control system in the embodiment shown in fig. 1 and fig. 2, where the method includes:

s801: acquiring an input condition: 1. electricity selling transaction electricity quantity A, load prediction electricity quantity C and actual electricity consumption quantity B; LC location information; MC position information and power plant output power.

Specifically, the electricity selling deviation system counts the sum of the long-term electricity quantity and the bidding electricity quantity as electricity selling transaction electricity quantity A, and obtains load prediction electricity quantity C; the data acquisition system makes statistics on the actual electricity consumption B, which is the sum of the electricity quantities of all the PCCs 1 to PCCn.

It should be noted that the status information of the power generation device/energy storage device may include the position information of the power generation device/energy storage device breaker (e.g., the position information of the MC) and the output power of the power generation device. The state information of the load may include position information of the load breaker (e.g., position information of the LC). The power grid central control system can obtain the states of the power generation equipment, the energy storage equipment and the load and the position information of the power generation equipment, the energy storage equipment and the load breaker according to the state information of the power generation equipment, the energy storage equipment and the load so as to determine the state of the power generation equipment, the energy storage equipment and the load where to adjust.

S802: when the load prediction electric quantity C is larger than A and is out of the assessment range, or the actual electric quantity B is larger than A and is out of the assessment range, executing any one of the following implementation modes or any combination thereof: 1. opening load switches LC1 through LCn associated with the load; 2. starting the generating equipment 1# to the generating equipment n #, or improving the output power of the generating equipment; 3. the energy storage device 1# discharges. S804 is performed.

Specifically, when the predicted load electric quantity C is larger than A and is out of the check range, or the actual electric quantity B is larger than A and is out of the check range, any load combination from the user load 1# to the load n # can be cut off according to the control instruction, and the three-level load is cut off preferentially, namely the load switches LC1 to LCn related to the load are cut off correspondingly; and/or any power generation equipment combination from the power generation equipment 1# to the power generation equipment n # can be started according to the control instruction, namely the power generation equipment 1# to the power generation equipment n # are correspondingly started, or the output power of the power generation equipment can be correspondingly increased according to the control instruction; and/or the energy storage device 1# discharges.

S803: when the load prediction electric quantity C is smaller than A and is out of the assessment range, or the actual electric quantity B is smaller than A and is out of the assessment range, executing any one of the following implementation modes or any combination thereof: 1. closing load switches LC1 through LCn associated with the load; 2. closing the power generation equipment 1# to the power generation equipment n #, or reducing the output power of the power generation equipment; 3. the energy storage device 1# is charged. S804 is performed.

It should be noted that S802 and S803 do not have a sequential execution order, that is, S802 may be executed first, or S803 may be executed first.

When the predicted load electric quantity C is smaller than A and is out of the assessment range, or the actual electric quantity B is smaller than A and is out of the assessment range, any load combination from the user load 1# to the load n # can be input according to the control instruction, namely the load switches LC1 to LCn related to the load are correspondingly closed; and/or closing any power generation equipment combination from the power generation equipment 1# to the power generation equipment n # according to the control instruction, namely correspondingly closing the power generation equipment 1# to the power generation equipment n #, or correspondingly reducing the output power of the power generation equipment according to the control instruction; and/or the energy storage device 1# is charged.

S804: continuously monitoring the difference value between the actual electricity consumption B or electricity selling transaction electricity quantity A and the load prediction electricity quantity C, and judging whether the difference value is in a preset range; if yes, ending; if not, go to S801.

Specifically, the actual electricity consumption B, the electricity selling transaction electricity A and the load prediction electricity C are continuously monitored, and the adjustment is continuously carried out according to the electricity selling deviation result obtained by the positive and negative deviation until the electricity selling deviation result is in the assessment range.

According to the electricity selling deviation control method and the electricity selling control system provided by the embodiment of the invention, the demand side management system can comprise the first data acquisition system and/or the second data acquisition system, the MC and the LC, the first data acquisition system and/or the second data acquisition system can be respectively connected with the MC and the LC, the real-time information of the power generation equipment and the energy storage equipment connected with the MC and the real-time information of the load connected with the LC are monitored, the operation working conditions of the power generation equipment, the energy storage equipment and the load can be timely known, and the utilization rates of the power generation equipment, the energy storage equipment and the load can be more efficiently exerted.

It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

Claims

1. A power selling deviation control method is suitable for a power selling control system comprising a power selling deviation control system, a demand side management system and a power grid central control system, and is characterized by comprising the following steps:

the electricity selling deviation control system acquires the bidding electric quantity, the long coordination electric quantity and the load forecasting electric quantity of a user;

the electricity selling deviation control system receives the actual electricity consumption of a user;

the electricity selling deviation control system obtains an electricity selling deviation result according to the bidding electric quantity, the long coordination electric quantity, the load forecasting electric quantity and the actual electricity consumption;

when the electricity selling deviation result is not in the preset range, the electricity selling deviation control system sends the electricity selling deviation result to the power grid central control system; the power selling deviation result is used for the power grid central control system to determine a corresponding control instruction, and the control instruction is used for instructing the demand side management system to adjust the state of at least one of the power generation equipment, the energy storage equipment and the load;

the control instruction is an instruction sent to a demand side management system by the power grid central control system according to the power selling deviation result and the state information of the power generation equipment, the energy storage equipment and the load;

the state information of the power generation equipment, the energy storage equipment and the load is monitored by a demand side management system, and the state information is sent to the power grid central control system by the demand side management system.

2. The method of claim 1, wherein obtaining a power selling deviation result according to the bid amount of power, the long term coordination amount of power, the load forecast amount of power and the actual power consumption comprises:

the sum of the bidding electric quantity and the long coordination electric quantity is differed from the load prediction electric quantity to obtain the electric selling deviation result;

alternatively, the first and second electrodes may be,

and obtaining the electricity selling deviation result by differentiating the actual electricity consumption and the load predicted electricity consumption.

3. The method according to claim 1 or 2, wherein before obtaining the bid amount, the long contract amount and the load prediction amount of the user, the method further comprises:

and receiving power consumption information of power generation equipment, energy storage equipment and a load, and adjusting the load prediction electric quantity according to the power consumption information.

4. The method according to claim 1 or 2, wherein before obtaining the bid amount, the long contract amount and the load prediction amount of the user, the method further comprises:

and adjusting the bidding electric quantity according to the long coordination electric quantity and the load prediction electric quantity.

5. The method of claim 1 or 2, wherein the bid amount comprises a monthly bid amount or a daily bid amount;

when the bidding electric quantity is monthly bidding electric quantity, acquiring the power selling deviation result at an interval of one month;

and when the bidding electric quantity is daily bidding electric quantity, acquiring the power selling deviation result at intervals of one day.

6. A power selling deviation control method is suitable for a power selling control system comprising a power selling deviation control system, a demand side management system and a power grid central control system, and is characterized by comprising the following steps:

the demand side management system monitors state information of the power generation equipment, the energy storage equipment and the load;

the demand side management system sends state information of the power generation equipment, the energy storage equipment and the load to the power grid central control system, and receives a corresponding control instruction obtained by the power grid central control system according to the state information and the power selling deviation result;

the electricity selling deviation result is obtained by the electricity selling deviation control system according to the bidding electric quantity, the long-term coordination electric quantity, the load forecasting electric quantity and the actual electricity consumption quantity of the user;

and the demand side management system adjusts the state of at least one of the power generation equipment, the energy storage equipment and the load according to the control instruction.

7. The method according to claim 6, wherein when the electricity selling deviation result is that the difference between the predicted electricity amount or the actual electricity consumption amount of the load and the sum of the bid electricity amount and the long coordination electricity amount is greater than zero and is not within a preset range, the adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load according to the control instruction comprises at least one of the following modes or any combination thereof:

and thirdly, discharging the energy storage device.

8. The method according to claim 6, wherein when the electricity selling deviation result is that the difference between the predicted electricity amount or the actual electricity consumption amount of the load and the sum of the bid electricity amount and the long coordination electricity amount is less than zero and is not within a preset range, the adjusting the state of at least one of the power generation equipment, the energy storage equipment and the load according to the control instruction comprises at least one of the following modes or any combination thereof:

and thirdly, charging the energy storage device.

9. The method according to any one of claims 6-8, further comprising:

monitoring power consumption information of the power generation equipment, the energy storage equipment and the load, and sending the power consumption information, wherein the power consumption information is used for indicating and adjusting the load prediction electric quantity.

10. A power selling deviation control method is suitable for a power selling control system comprising a power selling deviation control system, a demand side management system and a power grid central control system, and is characterized by comprising the following steps:

the power grid central control system receives a power selling deviation result obtained by the power selling deviation control system and state information of the power generation equipment, the energy storage equipment and the load monitored by the demand side management system;

the electricity selling deviation result is obtained according to the user's competitive electricity quantity, long-term coordination electricity quantity, load prediction electricity quantity and actual electricity consumption quantity which are obtained by the electricity selling deviation control system;

and the power grid central control system sends a corresponding control instruction according to the power selling deviation result and the state information of the power generation equipment, the energy storage equipment and the load, wherein the control instruction is used for instructing the demand side management system to adjust the state of at least one of the power generation equipment, the energy storage equipment and the load.

11. The method according to claim 10, wherein when the power selling deviation result is that the difference between the predicted load power amount or the actual power consumption amount and the sum of the bid power amount and the long coordination power amount is greater than zero and is not within a preset range, the control instruction comprises at least one of the following manners or any combination thereof:

and thirdly, discharging the energy storage device.

12. The method according to claim 10, wherein when the power selling deviation result is that a difference between the predicted load power amount or the actual power consumption amount and a sum of the bid power amount and the long contract power amount is less than zero and is not within a preset range, the control instruction comprises at least one of the following manners or any combination thereof:

and thirdly, charging the energy storage device.

13. An electricity vending control system, comprising: a sales electricity deviation control system for performing the method according to any one of claims 1-5, a demand side management system for performing the method according to any one of claims 6-9 and a grid central control system for performing the method according to any one of claims 10-12.