CN112907003A

CN112907003A - Renewable energy cross-region consumption system and method

Info

Publication number: CN112907003A
Application number: CN201911220883.6A
Authority: CN
Inventors: 韩彬; 胡晨旭; 孙振; 燕京华; 崔晖; 许丹; 黄国栋; 丁强; 戴赛
Original assignee: State Grid Corp of China SGCC; State Grid Zhejiang Electric Power Co Ltd; China Electric Power Research Institute Co Ltd CEPRI
Current assignee: State Grid Corp of China SGCC; State Grid Zhejiang Electric Power Co Ltd; China Electric Power Research Institute Co Ltd CEPRI
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2021-06-04

Abstract

The invention provides a renewable energy cross-region consumption system and a method, wherein the system comprises: the national dispatching side transceiver module is used for receiving the intra-day spot market data, the current spot market data and the tie line information declared by the provincial dispatching side; the national dispatching side matching module is used for matching based on the daily spot market data, the current spot market data and the tie line information to obtain the clearing result of the cross-provincial-region spot market; the national dispatching side transceiver module is also used for sending the clearing result of the cross-provincial spot market to the provincial dispatching side. The invention can be effectively used for cross-regional renewable energy spot market transaction, and realizes the purpose of consuming clean energy in a cross-regional range.

Description

Renewable energy cross-region consumption system and method

Technical Field

The invention relates to the field of power system automation, in particular to a renewable energy trans-regional consumption system and a renewable energy trans-regional consumption method.

Background

With the increasing prominence of energy crisis and environmental problems, countries around the world are actively invested in the development and utilization of renewable energy sources. Remote areas generally have a large amount of renewable energy sources, but the load consumption is low, developed areas have a large amount of concentrated loads, but the renewable energy sources are not enough to supply and consume, so the renewable energy sources and the loads are usually in reverse distribution, and the unreasonable distribution of the renewable energy sources and the load distribution causes the local consumption to be challenged, so that the phenomena of severe water and wind abandonment, light abandonment and electricity limitation occur, and huge economic loss is caused.

In order to improve the utilization rate of renewable energy, the cross-regional large-scale flow of energy and power becomes inevitable, and the existing power system dispatching automation technology does not consider the technical support function required for promoting the consumption of clean energy through cross-regional spot market trading, so that the defect that the consumption of the clean energy in a cross-regional range cannot be realized is caused.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides a renewable energy trans-regional consumption system which is used for organizing renewable energy trans-provincial outsourcing electric energy transaction to promote the consumption of clean energy.

The invention provides a renewable energy cross-regional consumption system, which comprises:

the national dispatching side transceiver module is used for receiving the intra-day spot market data, the current spot market data and the tie line information declared by the provincial dispatching side;

the national dispatching side matching module is used for matching based on the daily spot market data, the current spot market data and the tie line information to obtain the clearing result of the cross-provincial-region spot market;

the national dispatching side transceiver module is also used for sending the clearing result of the cross-provincial spot market to the provincial dispatching side.

Preferably, the national regulation side matching module includes:

the cross-provincial-region spot-goods market submodule is used for matching the sending and receiving ends of different provinces based on the day-ahead spot-goods market data and the tie line information to obtain the clearing result of the cross-provincial-region day-ahead spot-goods market;

and the intra-day spot market sub-module of the trans-provincial region is used for matching the sending and receiving ends of different provinces based on intra-day spot market data and tie line information to obtain the clearing result of the intra-day spot market of the trans-provincial region.

Preferably, the cross-provincial day-ahead spot market submodule includes:

the available capacity calculating unit is used for calculating the available capacity of the channel based on the surplus capacity data sent by the provincial dispatching side and sending the available capacity data of the channel;

the day-ahead matching unit is used for calculating to obtain day-ahead bidding clearing result and available capacity of the channel after bidding clearing based on bidding declaration data of the provincial dispatching side, and sending day-ahead bidding clearing result release data and available capacity release data of the channel after bidding clearing;

the system comprises a day-ahead clearing result unit, a price-sharing unit and a price-sharing unit, wherein the day-ahead clearing result unit is used for obtaining the residual electricity price based on the residual declaration data at the provincial dispatching side based on a set bidding mechanism and sending residual electricity price release data, day-ahead residual clearing result release data and day-ahead clearing total result release data;

and the flow message unit is used for publishing the flow message notification data in real time.

Preferably, the cross-provincial intra-day spot market submodule includes:

the system comprises a daily electricity price issuing unit, a price setting unit and a price setting unit, wherein the daily electricity price issuing unit is used for issuing daily electricity price data based on a set bidding mechanism;

the release marketing notification unit is used for sending marketing notification data, stopping marketing notification data and cross-provincial regional tie available capacity data to the provincial dispatching side based on the marketing application data sent by the provincial dispatching side;

and the day matching unit is used for matching based on bidding declaration data sent by the provincial dispatching side to obtain a clearing result and sending clearing result releasing data.

Preferably, the national dispatching side transceiver module is installed on a national dispatching side workstation, the cross-provincial-side cross-provincial-area in-date spot market submodule is installed on a national dispatching side cross-provincial-area in-date spot market main standby machine, and the cross-provincial-area in-date spot market submodule is installed on a national dispatching side cross-provincial-area in-date spot market main standby machine;

and the workstation respectively performs data interaction with the spot market main and standby machines in the cross-provincial region day-ahead and the spot market main and standby machines in the cross-provincial region day through the optical fiber switch.

Preferably, the system further comprises:

and the national tuning side model test module is arranged on the national tuning side model test server and is used for carrying out simulation test on the spot-shipment trading market in the national tuning side.

Based on the same inventive concept, the invention also provides a renewable energy cross-region consumption method, which comprises the following steps:

acquiring spot market data in the day, spot market data before the day and tie line information declared by the provincial dispatching side;

matching is carried out on the basis of the daily spot market data, the current spot market data and the tie line information to obtain the clearing result of the cross-provincial-region spot market;

and sending the clearing result of the cross-provincial spot market to the provincial dispatching side.

Preferably, the matching based on the intra-day spot market data, the pre-day spot market data and the tie line information to obtain the clearing result of the cross-provincial spot market includes:

matching the sending and receiving ends of different provinces based on the current spot market data and the tie line information to obtain the clearing result of the current spot market in the cross-province region;

matching the sending and receiving ends of different provinces based on the in-day spot market data and the tie line information to obtain the clearing result of the spot market in the cross-provincial region day.

Preferably, the matching of the sending and receiving ends of different provinces based on the current spot market data and the tie line information to obtain the clearing result of the current spot market across provinces comprises:

calculating available capacity of a channel based on surplus capacity data sent by a provincial dispatching side and sending the available capacity data of the channel;

calculating based on bidding declaration data of provincial dispatching sides to obtain day-ahead bidding output result and available capacity of a channel after bidding output, and sending day-ahead bidding output result release data and available capacity release data of the channel after bidding output;

obtaining the residual electricity price based on the residual declaration data of the provincial dispatching side based on a set bidding mechanism, and sending residual electricity price release data, day-ahead residual clearing result release data and day-ahead clearing total result release data;

wherein the current spot market data comprises bid declaration data and margin declaration data; the tie line information includes spare capacity data.

Preferably, the matching of the sending and receiving ends of different provinces based on the daily spot market data and the tie line information to obtain the clearing result of the spot market in the trans-provincial region day includes:

releasing day-to-day electricity price data based on a set bidding mechanism;

sending market starting notification data and market stopping notification data to a provincial dispatching side based on market starting application data sent by the provincial dispatching side, and sending cross-provincial junctor available capacity data to the provincial dispatching side based on junctor information;

matching is carried out on the basis of bidding declaration data sent by the provincial dispatching side to obtain a clearing result, and clearing result releasing data are sent;

the in-day spot market data includes application listing data and bid declaration data.

Based on the same inventive concept, the invention also provides a renewable energy cross-regional consumption system, which comprises:

the provincial dispatching side intra-provincial transceiving module is used for receiving electric power-electricity price declaration information of renewable energy power generation enterprises, power grid companies and users;

the provincial dispatching side transaction service module is used for checking and summarizing the electric power-electricity price declaration information based on spot commodity transaction checking data to obtain spot commodity market data in the day, spot commodity market data before the day and tie line information;

the provincial dispatching side transmits the current market data, the current market data and the tie line information to the national dispatching side, and transmits the dispatching data issued by the national dispatching side to the provincial dispatching side transaction service module;

the provincial dispatching side transaction service module is also used for carrying out spot market transaction based on dispatching data issued by the national dispatching side;

and the receiving and sending module of the provincial dispatching side to the national dispatching side is also used for receiving the clearing result of the spot market before the cross-provincial district day and the clearing result of the spot market in the cross-provincial district day.

Preferably, the provincial side transaction service module includes:

the scheduling plan submodule is used for sending spot transaction check data to the trans-provincial spot transaction service submodule;

and the cross-provincial spot-cargo transaction service submodule is used for checking and summarizing the electric power-electricity price declaration information based on spot-cargo transaction checking data to obtain daily spot-cargo market data, day-ahead spot-cargo market data and tie line information.

Preferably, the dispatch plan sub-module includes:

the system comprises a day-ahead scheduling plan service unit, a cross-provincial region spot-cargo transaction service submodule and a cross-provincial region spot-cargo transaction service submodule, wherein the day-ahead scheduling plan service unit is used for sending day-ahead wind power prediction information, a day-ahead plan and day-ahead check data to the cross-provincial region spot-cargo transaction service submodule;

and the intra-day scheduling plan service unit is used for sending the wind power prediction information before the day, the intra-day plan and the intra-day check data to the cross-provincial spot-cargo transaction service submodule.

Preferably, the cross-provincial spot transaction service submodule,

the system comprises a daily application unit, a national dispatching side and a remote dispatching side, wherein the daily application unit is used for sending surplus capacity data to the national dispatching side;

the system comprises a day-ahead bidding declaration data unit, a channel capacity data sending unit and a bidding declaration data sending unit, wherein the day-ahead bidding declaration data unit is used for sending bidding declaration data based on channel available capacity data sent by a national dispatching side;

the system comprises a day-ahead margin declaration data unit, a margin declaration data sending unit and a margin declaration data sending unit, wherein the day-ahead margin declaration data unit is used for sending margin declaration data based on day-ahead bidding clearing result release data at the national dispatching side and available capacity release data of a channel after bidding clearing;

and the daily clearing result unit is used for obtaining provincial-level market power plant clearing data based on the surplus electricity price publishing data, the daily surplus clearing result publishing data and the daily clearing total result publishing data of the national side.

Preferably, the cross-provincial spot transaction service submodule further includes:

the system comprises a domestic application unit, a domestic dispatching side and a domestic dispatching side, wherein the domestic application unit is used for determining whether to apply for opening the market or not based on domestic price data issued by the domestic dispatching side, and sending market opening application data to the domestic dispatching side when the market is opened;

and the participation in the intraday market opening unit is used for sending bidding declaration data to the national dispatching side based on the market opening notification data, the parking notification data and the cross-provincial tie available capacity data issued by the national dispatching side.

and the clearing data unloading unit is used for forwarding the market clearing result to the AGC server for storage.

Preferably, the day-ahead scheduling plan service unit is installed on a provincial dispatching side day-ahead scheduling plan server, and the intra-day scheduling plan service unit is installed on an intra-day scheduling plan server;

the day-ahead scheduling plan server and the day-in scheduling plan server are deployed in a scheduling production local area network.

Preferably, the provincial dispatching side transmits and receives the module to install on provincial dispatching side communication server to the national dispatching side, the provincial dispatching side trade service module is installed on provincial dispatching side transprovincial district spot transaction server main and standby machines;

the communication server main and standby machines are deployed in a scheduling production local area network, and the cross-provincial spot-cargo transaction server main and standby machines are deployed in a scheduling management local area network.

acquiring electric power-price declaration information of renewable energy power generation enterprises, power grid companies and users;

checking and summarizing the electric power-electricity price declaration information based on spot-shipment transaction checking data to obtain spot-shipment market data in the day, spot-shipment market data before the day and tie-line information;

sending the in-date spot market data, the current spot market data and the tie line information to a national dispatching side, and carrying out spot market transaction based on dispatching data issued by the national dispatching side;

and acquiring the clearing result of the spot market before the cross-provincial region day and the clearing result of the spot market in the cross-provincial region day.

Preferably, the performing spot market transaction based on the scheduling data issued by the national scheduling side includes:

sending surplus capacity data to a national dispatching side;

sending bidding declaration data based on the channel available capacity data sent by the national dispatching side;

sending margin declaration data based on the current bidding result release data of the national dispatching side and the available capacity release data of the channel after bidding release;

and obtaining provincial-level market power plant clearing data based on the surplus electricity price release data, the day-ahead surplus clearing result release data and the day-ahead clearing total result release data of the national dispatching side.

Preferably, the performing spot market transaction based on the scheduling data issued by the national scheduling side further includes:

whether to apply for listing is determined based on the daily price data issued by the national dispatching side, and when the listing is published, listing application data are sent to the national dispatching side;

and sending bidding declaration data to the national dispatching side based on the public offering notification data, the parking notification data and the cross-provincial junctor available capacity data issued by the national dispatching side.

Compared with the prior art, the invention has the beneficial effects that:

the technical scheme provided by the invention comprises the following steps: the national dispatching side transceiver module is used for receiving the intra-day spot market data, the current spot market data and the tie line information declared by the provincial dispatching side; the national dispatching side matching module is used for matching based on the daily spot market data, the current spot market data and the tie line information to obtain the clearing result of the cross-provincial-region spot market; the national dispatching side transceiver module is also used for sending the clearing result of the cross-provincial spot market to the provincial dispatching side. The invention can be effectively used for cross-regional renewable energy spot market transaction, and realizes the purpose of consuming clean energy in a cross-regional range.

The technical scheme provided by the invention comprises the following steps: the provincial dispatching side intra-provincial transceiving module is used for receiving electric power-electricity price declaration information of renewable energy power generation enterprises, power grid companies and users; the provincial dispatching side transaction service module is used for checking and summarizing the electric power-electricity price declaration information based on spot commodity transaction checking data to obtain spot commodity market data in the day, spot commodity market data before the day and tie line information; the provincial dispatching side transmits the current market data, the current market data and the tie line information to the national dispatching side, and transmits the dispatching data issued by the national dispatching side to the provincial dispatching side transaction service module; the provincial dispatching side transaction service module is also used for carrying out spot market transaction based on dispatching data issued by the national dispatching side; and the receiving and sending module of the provincial dispatching side to the national dispatching side is also used for receiving the clearing result of the spot market before the cross-provincial district day and the clearing result of the spot market in the cross-provincial district day. The invention can be effectively used for cross-regional renewable energy spot market transaction, and realizes the purpose of consuming clean energy in a cross-regional range.

The technical scheme provided by the invention can be effectively used for technical support of the trans-regional renewable energy spot market, data interaction between the national dispatching side and the provincial dispatching side is carried out, the market rules and the development targets of the trans-regional renewable energy spot market are met, the functional requirements of spot market operation are met, and the practicability and the applicability of the system are ensured.

Drawings

FIG. 1 is a schematic diagram of a national regulation side structure of a renewable energy transregional consumption system according to the present invention;

FIG. 2 is a schematic diagram of a national regulation side hardware structure of the renewable energy transregional consumption system of the present invention;

FIG. 3 is a schematic view of the provincial side structure of the renewable energy transregional absorption system of the present invention;

FIG. 4 is a flow chart of a cross-regional inter-provincial spot market for incremental day-ahead renewable energy sources in an embodiment of the present invention;

FIG. 5 is a flowchart of an intra-day spot market for cross-regional inter-provincial renewable energy augmentation in accordance with an embodiment of the present invention;

FIG. 6 is a schematic diagram of a provincial side hardware structure of a renewable energy trans-regional absorption system according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of marginal price bargaining in an embodiment of the present invention;

FIG. 8 is a schematic diagram of interaction between a national side and a provincial side of a renewable energy transregional consumption system according to an embodiment of the present invention;

FIG. 9 is a flow chart of the time of day market trading in an embodiment of the present invention;

FIG. 10 is a functional layout of a renewable energy trans-regional consumption system in an embodiment of the present invention;

FIG. 11 is a flow chart of a market bid clearing algorithm in an embodiment of the present invention.

Detailed Description

For a better understanding of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings and examples. The criteria for dividing regions in the present invention are: setting a country as a first level, and sequentially setting levels according to the power grid distribution form of the country; in this embodiment, taking china as an example, china is set as the first level; five areas are arranged in China, and are the second level; wherein the regions of the second stage comprise: the province-oriented provinces, and the north-oriented province-oriented provinc. Taking the east China region of the second level as an example, the third level includes Jiangsu, Anhui, Zhejiang, Fujian and Shanghai. Although this embodiment takes china as an example, the present invention is not limited to china, and the national dispatching side mentioned corresponds to the first stage, and the provincial dispatching side corresponds to the third stage in the power grid.

Example 1

As shown in fig. 1, the present invention provides a renewable energy transregional consumption system, which includes:

The Chinese dialect data interaction scheme of the embodiment comprises the following steps:

the provincial dispatches of the branch center and the receiving end access the local market of renewable energy increment among the regional provinces of the national dispatches in a login mode. Considering the requirement of security protection, a fixed IP access is needed, and a protection strategy is adopted for the fixed IP, so that the IP which needs to be accessed by the local side needs to be submitted through the branch center and the receiving end province call accessed by a login mode.

The sending province carries out data file interaction with the national dispatching in a message mail mode, and information communication is achieved. The data exchange file format is as follows.

Data interaction is carried out between the national tone and the provincial tone in a second region in a message mail mode, and a table 1 shows data file description of specific interaction of the national tone and the provincial tone in functions before and in the day.

TABLE 1 national tone, branch center, provincial tone data interaction scheme

The technical support system for the local market of renewable energy sources, such as trade orders, weekly reports and the like formed by the local market is transmitted to a local area III from a local area II to the local area III through a message mail and can be downloaded and acquired by a service office.

In this embodiment, the china dispatching side is deployed in a dispatching production local area network and a dispatching management local area network, wherein the dispatching production local area network is specifically designated as a nation dispatching area ii, and the dispatching management local area network is specifically designated as a nation dispatching area III.

As shown in fig. 2, the domestic-deployment, central-provincial, surplus renewable energy spot-market system is deployed in a dispatch production local area network, i.e., a domestic-deployment ii area, and is developed by using a C/S architecture. Because the power grid company adopts a network strategy of 'safe partition, network special, transverse isolation and longitudinal authentication', communication between different mechanisms needs to be supported by a communication proxy server, and communication with national dispatching II area and provincial dispatching market members is completed. And the provincial dispatching and national dispatching data interactively support message mail transmission and other modes.

The dispatching center, the receiving province and the sending province interact data files with the national dispatching center in a message mail mode to realize information communication. The data exchange file format adopts standard uniform styles and data contents.

In the national dispatching center, data such as trade orders, weekly reports and the like formed in the spot market are required to be transmitted from the national dispatching II area to the national dispatching III area through a message mail, and are downloaded and acquired by a service office through an OMS system. The types of data transmitted from zone ii to zone iii using message mail include files such as transaction orders, weekly reports, statistical data, and the like.

Example 2

As shown in fig. 3, the present invention provides a renewable energy transregional consumption system, which includes:

1. As shown in fig. 4 and 5, the main data flow directions of the spot market across provinces in the day and the spot market across provinces in the day are respectively displayed, the spot market across provinces in the day is developed once a day, and the spot market across provinces in the day is developed at any time and can be developed for multiple times.

With reference to the hardware architecture of fig. 6, the following describes specific data flow according to the functional operation flow:

(1) the communication between the two-area communication server and the national dispatching two-area is realized by a message mail mode according to the requirement of the national dispatching, and comprises the steps of receiving various issued files of the national dispatching and reporting various information files.

(2) And the second-area communication server exchanges file data with the third-area function deployment server E, and the second-area communication server sends a clearing result file issued by national dispatching to the third area and receives a declaration and outward-sending transaction information file integrated by the third-area function.

(3) The power plant directly accesses the cross-provincial spot market declaration delivery function deployed in the three regions through a dispatching data network, and the access mode is to log in cross-provincial spot market function declaration data through a fire fox browser and receive delivered spot transactions;

(4) the second area sends the short-term wind power prediction information, the day-ahead plan and the day-ahead check data to the third area cross-provincial spot market function in a file manner before the specified time every day;

(5) the intra-day scheduling plan and the safety check are used for periodically sending the ultra-short-term wind power prediction information, the intra-day plan and the intra-day check data to a cross-provincial spot market function in three areas in a file mode;

(6) and the cross-provincial spot market function in three areas sends the market clearing result to the AGC regularly in an E file mode according to the standard interface specification.

The way that the three-region cross-provincial spot market function sends the clearing result to the one-region AGC is as follows: and the three-area generated E file is sent to the two areas and then forwarded to a first-area AGC appointed server. The reason is as follows:

(1) the clearing algorithm for provincial deployment is as follows: after the total clearing result issued by the national dispatching is obtained, the total clearing result is distributed to each power plant according to a certain principle after the data such as basic parameters of the power generation capacity declared by the power plant, the capacity of the power plant and the like are obtained. The principle shows that when the declared prices of the power plants are the same, the medium bid amount can be distributed according to the capacity; in addition, constraint conditions such as sections need to be considered in the distribution process.

(2) The clearing algorithm and the declared data summarizing, checking and adjusting algorithm are unified, and basic parameters such as the capacity of a power plant and constraint data such as sections are needed during calculation.

(3) If the cleaning algorithm is deployed in the second area, the third area is also required to transmit basic parameters such as the capacity of the power plant and constraint data such as the section from the third area to the second area. Compared with the method deployed in the third area, although the distribution result of the power plant does not need to be forwarded to the first area from the third area through the second area, the basic parameters and the constraint data still need to be transmitted to the second area from the third area, and the data interaction amount of the third area and the second area is not reduced.

2. Hardware deployment on the provincial side comprises the following steps:

the provincial dispatching side trans-provincial region spot market function is deployed in three regions, function development is carried out in a web mode, and login and operation of general browsers such as Firefox are supported. Two new spot market function servers are designed to be used as main and standby machines for deploying programs such as tomcat and clearing calculation and the like, and functions of declaration release, bidding clearing and the like are achieved. Meanwhile, two communication servers are required to be deployed in the second area as main and standby machines, and related market members log in a spot transaction function server in the third area in a web mode to carry out cross-area transaction.

The hardware deployment diagram of the cross-provincial spot market functional hardware system is shown in FIG. 6:

(1) the design of the third area needs to add two servers as the main and standby machines to deploy the spot market function;

(2) the three-region does not need to deploy an independent workstation to access the cross-provincial spot market function, and the provincial, tone and three-region workstation which meets the requirement of automatic safe access can log in to access the cross-provincial spot market function through a browser;

(3) as can be seen from the figure, the interfaces of the cross-provincial spot market function and other functions realize data interaction between the cross-provincial spot market function and national dispatching through the communication server deployed in the second region;

(4) the communication between the second area communication server and the national dispatching second area is realized by a small mail according to the requirement of national dispatching;

(5) the second-region trans-provincial spot-cargo transaction declaration and purchase workstation is deployed in the second region according to the installation standard requirements, and registers the state through a WEB browser to declare the purchase transaction amount through the trans-provincial spot-cargo transaction function;

(6) the power plant can directly log in cross-provincial spot market function declaration data through a general browser and receive issued spot transactions;

(7) the day-ahead scheduling plan and the safety check are realized by a second area, and day-ahead wind power prediction information, a day-ahead plan and day-ahead check data are sent to a third area, namely a cross-provincial spot-cargo market function before the day;

(8) the intra-day dispatching plan and the safety check are realized by a second area, and day-ahead wind power prediction information, a day-ahead plan and day-ahead check data are sent to a cross-provincial spot market function in a third area;

(9) and the cross-provincial spot market function in three areas forwards the market clearing result to the AGC through two areas according to the standard interface specification.

Example 3

The invention mainly organizes the trade of the renewable energy source trans-provincial outgoing electric energy in order to promote the trans-regional renewable energy source spot market system of the consumption of the clean energy source. A sending-end renewable energy power generation enterprise declares an electricity selling 'power-electricity price' curve according to surplus power generation capacity and time periods according to a set definition standard of water, wind, light and electricity abandoning power; the receiving-end power grid enterprise declares a power-electricity price curve for electricity purchase according to the set power purchase quotation strategy; the large user and the power selling company can declare the curve of 'power-electricity price'. The buyer declares the power price and the electric power, considers the power transmission price and the line loss, then converts the power price and the electric power into a transmitting end transaction metering gateway, and then gives out clearing in a centralized way with the seller price, and the clearing process considers the safety constraint of a power transmission channel and settles the marginal price as shown in figure 7.

In the embodiment, taking china as an example, in order to promote the consumption of renewable energy across provincial regions, the provincial region-across spot market determines an optimal power transmission path according to the current provincial region-across power transmission price policy of the country, that is: the Szechwan hydroelectric power and the Sanbei wind power photovoltaic power are delivered through different power transmission channels, under the condition that the drop points are the same, the optimal power transmission path is determined according to the principle that the power transmission price and the line loss rate are the lowest, and the trading price scheme is determined according to the power transmission price and the line loss rate in each link by referring to the state batch level.

The cross-provincial spot market comprises two parts, namely a day-ahead market and an in-day market. The day-ahead market is mainly used for organizing renewable energy increment outgoing electric energy trading and power generation right replacing trading after considering intra-provincial consumption capacity and annual and monthly trans-regional trading plans, and the day-ahead market is mainly used for organizing renewable energy surplus electric quantity increment outgoing electric energy trading and power generation right replacing trading after considering intra-day supply and demand changes and day-ahead outgoing plans.

The seller body comprises renewable energy power generation enterprises such as hydropower enterprises, wind power enterprises, photovoltaic enterprises and the like. The buyer main body comprises provincial power grid enterprises (provincial dispatching departments are responsible for participating in market quotations according to specific electricity purchasing quotation strategies of government authorities or acting users in provinces to participate in the market quotations), and large users and electricity selling companies are gradually introduced to participate. The main power transmission bodies comprise national power grid companies (including headquarters and branches) and provincial power grid enterprises.

As shown in fig. 8, the china dispatch center of the spot transaction system for delivering renewable energy across provincial regions is responsible for the unified organization of the spot market across provincial regions, and the provincial dispatching department is responsible for receiving, summarizing and reporting the quoted prices of the power generation enterprises in provinces, and is responsible for further clearing the provincial transaction results to the power plants according to the market rules.

The day-ahead market is marketed on weekdays, each weekday organizing day-ahead transactions for 96 sessions (15 minutes for one session, the same below) the next day.

The market is opened every day in the day, renewable energy source daily increment transaction is organized according to market demand, and the market is opened 2 hours in advance in each transaction period.

1. Bidding mechanism

The cross-provincial spot market adopts a centralized bidding clearing mechanism considering channel security constraints. And converting the declared power rates and the electric power of the buyers into a delivery end transaction metering gateway after considering the power transmission power rates and the line loss rate, sorting the quoted prices of the buyers from high to low, sorting the quoted prices of the sellers from low to high, leading the buyer with the highest quoted price to have a transaction with the seller with the lowest quoted price, clearing the transaction in sequence according to the price difference decreasing principle until the declared power is completely paid, or the quoted price of the buyer is lower than the quoted price of the seller, finishing the transaction, taking the average value of the quoted prices of both sides of the final transaction power as the marginal power rate of the system, and settling the total transaction power according to the marginal power rate of the system. And considering the channel safety constraint in a closed loop manner in the clearing process, if the power transmission channel between the buyer and the seller reaches the power transmission capacity, the transaction of the relevant buyer and the seller is considered to be finished, and the quotation of the seller and the buyer corresponding to the channel is deleted from the quotation sequence, but the power can be bought and sold to other regional market main bodies.

2. Day-ahead market flow

(1) And (6) issuing transaction information. Before working day 11:00, the national dispatching center and the branch center complete the pre-planning of the cross-provincial channel day ahead, and issue the transaction information such as available transmission capacity of the cross-district channel on the next day to the market subject; and each province completes the day-ahead planning of the power plant, and issues transaction information such as system load prediction of each province in the next day and the like to the renewable energy power generation enterprises in the provinces.

(2) The seller agent offers. And before the working day 11:30, sending end province and province organization province-interior renewable energy power generation enterprises finish the market quotation before the day. The provincial dispatching carries out rationality check and preliminary security check on the quotations of the power plants, ensures that the outsourcing power demands declared by power generation enterprises meet the safety constraint of the provincial power grid, integrates into a total quotation curve of the provincial renewable energy outsourcing, and submits the total quotation curve to the national dispatching center spot-market system.

(3) The buyer agent quotes. Before working day 11:30, the receiving province and the dispatching organization in provinces complete the market quotation before the day for large users and electricity selling companies. The provincial dispatching carries out rationality check and preliminary security check on the quoted price, ensures that the declared power demand meets the safety constraint of the provincial power grid and the physical constraint of the unit, integrates the quoted price with the specific power purchasing quotation of the government into a total provincial power purchasing quotation curve, and submits the curve to the state dispatching central spot-shipment market system.

(4) The market is concentrated and cleared. And (3) before 14:00 working days, the national center of mediation organizes the cross-provincial-area day-ahead market to give out the clearing result, the clearing result is formed by considering the channel safety constraint, the clearing result is taken into the cross-district channel day-ahead plan, and the distribution center is issued.

(5) And issuing the gateway plan of the provincial junctor. Before working day 15:00, the branch center receives a cross-district passage day-ahead plan issued by national tone, compiles an inter-provincial connecting line gateway plan, and issues each provincial tone after safety check.

(6) Clearing the provincial trade and planning the power generation plan. Before working day 16:00, the province dispatching and receiving end province dispatches the province clear results to the power plant according to the market rules; and compiling an electricity generation plan of the provincial unit according to a gateway plan of the connecting line issued by the branch center, and issuing and executing after safety check.

(7) And (6) issuing transaction information. And (5) before 16:30 of working day, each level of scheduling publishes a transaction clearing result according to the specified requirements.

3. Day market process

(1) And (5) market quotation in the day. And (3) before 17:00 of the previous day, the buyer and the seller declare the market bidding price (single price) in the next day for market bidding in the next day. The market in the initial stage of the market can be quoted in the day before instead of the independent quoted price.

(2) And (5) market subject transaction declaration. And before T-120 minutes (the starting time of the transaction period is T, the same below), the buyer and the seller declare a transaction intention power curve in the transaction period.

(3) The market is clear in the day. And before T-90 minutes, the national center of transfer organizes the clearing of the daily market to form a clearing result considering the channel safety constraint, and the transaction result is put into the cross-regional channel plan.

(4) And modifying the day-to-day provincial gateway plan. And before T-70 minutes, the related sub-centers form inter-provincial connecting line gateway plans and issue after safety check according to the cross-regional channel transaction result.

(5) And modifying the intra-day provincial power generation plan. Before T-50 minutes, the provincial dispatching and receiving terminal province dispatches the provincial clearing results to the power plant according to the market rules; and adjusting the power generation plan of the provincial unit according to the gateway plan change of the connecting line issued by the branch center, and issuing and executing after safety check.

(6) And (6) issuing transaction information. Before T-30 minutes, each level of scheduling publishes a transaction clearing result according to the specified requirements.

4. Market-ahead interaction data, including:

(1) channel capacity availability issue data

File name: CBPM _ CORRIDOR _ schedule unit _ transaction date.

(2) Bidding declaration data

File name: the CBPM _ bif _ schedule _ transaction date dat, contains the following declaration information data and bid declaration data.

(3) Clearing result release data

File name: and DAT comprises clear power data, clear power price data and cross-regional tie line transaction component power data.

(4) Date bidding clearing result release data

File name: and the data comprise clearing power data, clearing price data and cross-regional connecting line transaction component power data.

(5) Flow message notification publication data

File name: CBPM _ MESSAGE _ issue unit _ issue timestamp dat, filename suffix "1516602259593" is the timestamp when the MESSAGE was sent. (Greenwich mean time 1970 1 month 1 day 00 hours 00 minutes 00 seconds up to the present total milliseconds)

Channel available capacity post bid out release data, filename: CBPMYL _ CORRIDOR _ Schedule Unit _ transaction date dat

(6) Margin declaration data format

File name: the file content includes declaration information data and margin declaration data.

(7) Remaining electricity price release data

File name: CBPMYL _ GDPRICE _ Schedule Unit _ transaction date dat

(8) Date surplus clearing result release data

File name: and d, dat, including clearing power data, clearing price data and cross-regional tie line transaction component power data.

(9) Date clearing total result release data

5. Intraday market interaction data, including:

(1) apply for marketing data

File name: RN _ REQOPEN _ scheduling unit _ time identification dat

Description of the documents: in the transaction waiting stage, the sending province dispatcher sends a file to the state dispatcher through a message mail to apply for marketing. When a request for opening a market on T-1 day is submitted, the transaction date should be T day, and the transaction date is different from the current date.

(2) Listing notification data

File name: RN _ MARKETOPEN _ Schedule Unit _ Schedule number dat

Description of the documents: the state transfers the spot market in the starting day, and issues the market opening notice information

(3) Parking notification data

File name: RN _ MARKETCANCEL _ Schedule Unit _ Schedule number dat

Description of the documents: the state transfers the current scheme to cancel the current market in the day before the result is not released, and the market stop notice information is released

(4) Cross-provincial junctor available capacity data

File name: RN _ CORRIDOR _ Schedule Unit _ Schedule number dat

Description of the documents: the national dispatching starts the spot market in the day, and releases the available capacity of the tie line

(5) Daily electricity price data

File name: RN _ GDPRICE _ Schedule Unit _ transaction date dat

Description of the documents: the file is the same as before, only the name of the file is changed, and the file is still released after being cleared before the day before.

(6) Bidding declaration data

File name: RN _ BIDOFER _ Schedule _ transaction date _ Schedule number dat

Description of the documents: within 30 minutes after the current trading scheme is started, reporting the trading electricity price/electric power data in the local day

(7) Clearing result release data

File name: RN _ RESULT _ Schedule Unit _ Schedule number dat

Description of the documents: and after the trading time is 1 hour, receiving the intra-day trading power-electricity price clearing data and the local cross-regional connecting line trading component power data of local region trading according to the channel trading in the trading result. The data in the transaction result only comprises the clearing result under the scheme and does not comprise the clearing results of other schemes.

6. A security mechanism scheme comprising:

6-1, Total Requirements

The safety protection of the cross-regional renewable energy spot market technical support system is based on legal regulations and related file requirements, adopts a high-strength and omnibearing safety protection technology, and strictly ensures the safe, reliable and stable operation of the system according to related requirements.

The general principle of supporting system safety protection by the cross-regional renewable energy spot market technology is 'safety partition, network special, transverse isolation and longitudinal authentication'. The system has the advantages that the boundary protection and internal physical, network, host, application and data safety are enhanced, the monitoring and early warning of the system are enhanced, the management of systems, mechanisms, personnel, research and development, construction, operation and maintenance is enhanced, the overall safety protection capability of the system is improved, and the safety of the system and the spot market transaction data is ensured.

All password infrastructures of the cross-regional renewable energy spot market technical support system conform to the relevant national regulations and pass the detection and the certification of relevant national institutions.

6-2, architecture Security

In the construction of a cross-regional inter-provincial spot market technical support system, the system structure safety adopts a basic protection strategy of 'safety partition, network special, transverse isolation and longitudinal authentication'.

(1) Secure partition

According to the regulations, main function modules and service databases of the cross-regional inter-provincial spot market technical support system are arranged in a production control large area safety II area and a management information large area safety III area, and function modules related to the internet are deployed in an information extranet and implement corresponding safety protection measures.

(2) Network specialization

When the cross-regional inter-provincial spot market technical support system is used for communication between a production control large area and production control large area systems of other regions, a power wired private network is adopted for communication. The management information large-area business is communicated by adopting a power enterprise data network, and the power enterprise data network is a power enterprise intranet.

(3) Lateral isolation

The cross-regional inter-provincial spot market technical support system is provided with a special transverse one-way safety isolation device for electric power, which passes the detection and authentication of related organizations in the state or industry, between a safety II region and a safety III region.

The cross-regional inter-provincial spot market technical support system deployed in the safety II area is provided with a hardware firewall with an access control function or a facility with a corresponding function between the cross-regional inter-provincial spot market technical support system and other business systems in the safety II area, so that logical isolation is realized.

The cross-regional inter-provincial spot market technical support system deployed in the safe III region is required to deploy a hardware firewall with an access control function or a facility with a corresponding function between the safe III region and other business systems of an information intranet, so that logical isolation is realized.

Measures such as a logic strong isolation device and the like are required to be deployed between an information outer network and an information inner network of a management information large area; the direct data interaction between the cross-regional inter-provincial spot market technical support system functional module of the information external network and the cross-regional inter-provincial spot market technical support system deployed in the safety III area adopts a national or industry related organization to detect and authenticate a special transverse one-way safety isolation device for electric power to realize physical isolation.

(4) Longitudinal authentication

The cross-regional inter-provincial spot market technical support system is provided with a longitudinal encryption authentication device which passes the detection authentication of related organizations of the country or industry at the boundary between a production control large region and a power dispatching data network, and realizes the confidentiality and integrity protection of service data through technical measures such as identity authentication, data encryption, access control and the like.

The cross-regional inter-provincial spot market technical support system adopts technical measures such as identity authentication, data encryption, access control and the like at the boundary between the management information large region and the power enterprise data network, so that the confidentiality and integrity protection of business data are realized.

The boundary types and requirements of the cross-regional inter-provincial spot market technical support system are as follows:

table 2 spot system boundary types and requirements

6-3 computer and network device security

The cross-regional inter-provincial spot market technical support system network security facilities (including network switching equipment such as routers and switches, and network security equipment such as firewalls and electric power special transverse one-way isolating devices) need to prevent malicious chips from existing on equipment mainboards through security detection authentication of national relevant organizations.

The key network security facility should provide hardware equipment redundancy, perform security backup on equipment configuration, upgrade security patches in time, and forbid the selection of equipment with bugs and risks notified by relevant national departments.

When the network device and the computer device are used, reasonable configuration is applied, a security policy is started, idle network ports and other useless ports are closed, and unnecessary interfaces (including an optical drive, a USB interface and the like) of the mobile storage device are removed or closed.

6-4 operating system and base software security

Basic software such as a safety operating system, a database, middleware and the like which are detected and authenticated by relevant organizations of the country or industry is adopted by the equipment of the cross-regional province spot-market technical support system, so that the requirements on safety and reliability are met, strict access control measures are implemented, and safety patches are upgraded in time.

The operating system and the basic software only need to be installed and operated with components and application programs, and the user name, password and strength of the database and the operating system meet the requirements of policy and regulation such as basic requirements of protection of safety level of information system in power industry and the like.

The management authority of the operating system is realized by the cooperation of a security administrator, a system administrator and an audit administrator respectively, and only the minimum authority required by each user is granted.

6-5, application software security

The technical support system of the cross-regional renewable energy spot market is integrated with safety protection concepts and measures during design, service system software requires a modular overall design, service modules are reasonably divided and deployed in corresponding safety regions, and the safety of core modules is mainly guaranteed.

The trans-regional renewable energy spot market technical support system requires that a cryptographic algorithm authenticated by the national cryptographic authority is adopted to carry out encryption storage and transmission on the transaction information, so that the privacy, the integrity and the resistance to repudiation of the transaction information are guaranteed.

The account number is established in real name according to the user property, the account number is forbidden to be shared among different users, and the minimum authority required by the user account is configured according to the service requirement.

The technical support system for the cross-regional renewable energy spot market is required to have log audit management, provide log records which can be used as legal evidence, and take safety measures to store the log records for at least more than six months.

Functional module software in the cross-regional renewable energy spot market technical support system is ensured to be free of malicious software or malicious codes through security detection and code security audit of related national institutions before deployment. The inter-district and inter-provincial spot market technical support system is maintained through internal special facilities, whole-process monitoring is implemented by adopting identity authentication and safety audit, and traceability of maintenance behaviors is guaranteed. Remote maintenance via the internet is strictly prohibited.

6-6, data security

(1) And marking the key business data, including electric power transaction data declaration information, clearing information and the like.

(2) And safety measures are adopted to forbid the provision of plaintext information of all key service data to independent function modules in the system, so that the risk of data leakage is reduced.

(3) According to the requirement of information confidentiality term in the market rule, data security storage measures are taken for information such as declaration information and final transaction detail within the confidentiality term, and data leakage is avoided; and disclosing the data information to market members in an anonymous form after the confidentiality expires.

(4) The key service data storage requires protection measures such as encryption, signature, timestamp, access control and the like, and the data privacy, integrity, resistance to denial, timeliness and use safety are guaranteed.

(5) The key service data modification and deletion operation requires strict access control measures, and the conditions of data loss, abnormality and the like have log record tracking and recovery functions.

(6) The key service data transmission requires encryption and signature measures, and the data privacy, integrity and resistance to denial are guaranteed.

(7) The system provides a data backup recovery mechanism for the service data, supports local and remote data backup modes, performs complete data backup at least once every day, and ensures the safety of backup data by adopting protective measures such as encryption, signature, access control and the like.

6-7, password security

The cross-regional renewable energy spot market technical support system adopts special hardware facilities to provide safety protection for generation, storage and calling of spot transaction related passwords.

The digital certificate used by the cross-regional renewable energy spot market technical support system adopts special hardware storage meeting the requirements of the national password administration to ensure the use safety.

6-8, terminal security

The cross-regional renewable energy spot market technology support system transaction terminal adopts a special hardware-based double-factor authentication mechanism to ensure the authenticity of the user identity in the transaction process.

And the transaction terminal system adopts safety communication protocols such as HTTPS and the like to ensure the safety of transaction communication in the data reporting process.

The transaction terminal system should deploy corresponding terminal security protection facilities, provide security measures such as security reinforcement of an operating system, authority access control, virus and malicious code prevention, system upgrading and updating and the like, and provide a secure transaction environment for users.

6-9, monitoring and early warning

According to the principle of 'self-perception of the monitored object, distributed acquisition of the network safety monitoring device and unified management and control of the network safety management platform', network security monitoring devices are respectively deployed in a security II area and a security III area where a cross-regional inter-provincial spot market technology support system is located, monitored objects such as computers, network equipment, security equipment, service application programs and the like related to the cross-regional inter-provincial spot market technology support system adopt self-perception technology to generate required network security events and send the required network security events to the network security monitoring devices, so that network operation logs, operation system operation logs, database important operation logs, security equipment operation logs and service application security event information (including events such as login, access, key operation and the like of service application) are acquired, and the processed result is sent to the affiliated network security management platform, and the network security behaviors of the cross-regional inter-provincial spot market technical support system equipment and the service system are comprehensively monitored.

7. Market trading day by day

(1) Cross-provincial day-ahead market electricity purchasing and selling data declaration

And establishing a data declaration mode suitable for a cross-provincial day-ahead market system based on market rule design. For the sending province, the renewable energy power plants participating in the market send declaration data to the corresponding province dispatching, and after the province dispatching performs intra-province security check, feasible declaration data is summarized into a 'quantity-price' curve declared by the province dispatching, and the curve is submitted to the state dispatching, participation and bidding. The receiving province is currently operated by provincial dispatching agencies, quoted price data directly logs in a trans-regional provincial renewable energy increment spot-shipment trading platform, and quantity-price curve information of purchase is filled in the platform for power purchase declaration.

(2) Centralized bid clearing mechanism considering channel security constraints

The cross-region spot transaction adopts a centralized bidding clearing mechanism considering channel safety constraint, and clearing is carried out according to time periods:

1) according to a high-low matching mode, seller quotations converted to a delivery-end transaction gateway are sorted from low to high, buyer quotations converted to the delivery-end transaction gateway are sorted from high to low, the seller with the lowest quotation and the buyer with the highest quotation are given priority for transaction, and the seller and the buyer are cleared in turn according to the principle that the price difference of the quotations of the buyer and the seller is decreased; when the price difference of different buying and selling parties is the same and the amount of the tradable electric quantity of the selling (buying) party is insufficient, the surplus electric quantity of the buying (selling) party is distributed according to the proportion of the surplus electric quantity of the buying (selling) party.

2) Each transaction that is made is assigned to a cross-region channel based on the proportion of the spare space in the cross-region channel (or based on the priority of the channel). The transaction is deducted from the transaction amount declared by the buyer and the seller, and the rest amount declared by the buyer is converted into 'power-electricity price' to the delivery end according to the channel, and is matched with the rest amount declared by the seller in price difference.

3) If the power transmission channel between the buyer and the seller reaches the power transmission capacity limit value, the transaction of the relevant buyer and the relevant seller is considered to be finished, and the quotation of the seller and the buyer corresponding to the channel is deleted from the quotation sequence, but the electricity can be bought and sold to other regional market main bodies.

4) And (4) sequentially clearing the market until the buyer or the seller declares that the electric quantity is completely paid, or the price difference between the buyer and the seller is negative, or no available space exists in a power transmission channel, and ending the transaction. And (4) the average value of the last one-time transaction electric quantity quoted by the buyer and the seller of each delivery terminal province is the system marginal price, and all transaction electric quantities in the province are settled according to the system marginal price.

(3) Adjustment of transaction clearing results to meet security check adjustments

And based on the electric energy plan application, adding the bidding clearing result to the existing tie line plan compilation result to form a cross-region power transmission channel power transmission plan and sending the cross-region power transmission channel power transmission plan to the safety check application, if a safety problem exists, feeding back an adjustment result according to the safety check, adjusting the priority according to the plan applied by the electric energy plan, judging whether to adjust the bidding clearing result, if adjusting the bidding clearing component, bidding the clearing again, and performing iterative operation until the safety check is passed to form a final clearing result.

(4) Market clearing

And clearing bid winning data, power transmission channel cost, network loss cost and the like of each trading order of market members based on the market bidding clearing result.

The clearing carried out by the scheduling is mainly used for checking the calculation result, and the clearing comprises two parts of electric quantity balance and expense balance. The electric quantity balance is used for checking the data consistency of sending, transmitting and using electricity; the cost is used for checking the consistency of the selling, transmitting and purchasing electricity costs.

(5) Marketing clear result publishing

According to market rules, market clearing and settlement information is issued to market members step by step in a set time, market clearing results comprise information such as winning power, electric quantity and price in a trading list declared by the market members and information of a power transmission channel, and the information issuing meets the requirements of the market rules on safety, consistency, timeliness, confidentiality and the like. At present, data release of national dispatching is developed aiming at provincial dispatching, relevant data are released to provincial dispatching, and the relevant data are released to a power plant after being cleared again by the provincial dispatching.

8. Market trading in the day

In the 'trade on demand' daily market mode, when the sending end province has the situations of wind abandonment, light abandonment, water abandonment and the like, the sending end province provides an application for starting the daily market to national dispatching. And after receiving the application, the national dispatching judges whether to start the market according to the current market state in the day. If the intra-day market is started, the intra-day spot market enters a market opening state and generates a corresponding scheme number, and each transaction of the intra-day market corresponds to a unique scheme number. After the scheme is started, the national tone issues the scheme number of the scheme and the information of each time node corresponding to the scheme to the relevant provincial tone. After receiving the scheme information, the relevant province dispatches decide whether to participate in the market according to the province situation. If the market is participated in, the related information is declared according to the specified time node. The provincial dispatching information is corresponding to the scheme number. After the declaration is finished, the national dispatching carries out clearing calculation on the scheme, and the trading result is issued after clearing is finished. After the trading result is released, the spot market enters a closed market state in the day, and the national dispatching can accept a new market starting application proposed by provincial dispatching.

After each transaction is started and the transaction result is released, the state transfers do not start a new scheme, namely two schemes are not performed simultaneously, and the provincial transfers do not allow the purchase and sale of power demands to be declared to a plurality of transaction schemes at the same time. The transaction time of each scheme is in the time period of the day, and the transaction section declared by the same scheme does not span the day.

Each round of trading of the market mode in the 'on-demand trading' day is divided into 6 stages which are respectively transaction waiting, transaction declaration, transaction operation, transaction result issuing, transaction waiting execution and transaction execution.

(1) Transaction waiting period (spot market in closed market state in day): the provincial dispatching of the sending end can provide a trade application to the national dispatching, the national dispatching starts the spot market in the day and issues a market opening notice to market participants, and the time point of the market opening in the day is set as T1;

(2) transaction declaration phase (T1 to T1+30, duration 30 min): and the provincial dispatching and receiving end receives the notice of the market opening of the spot market in the dispatching date of China and reports the electricity purchased and sold in the time period from T1+90 to T1+270 according to the respective demands.

(3) Transaction operation phase (T1+30 to T1+60, duration 30 min): and the national dispatching receives provincial dispatching declaration electric power and issues available capacity of the channel, clear calculation is completed, and the branch center confirms the transaction result.

(4) And a transaction result issuing stage (T1+ 60): the national dispatching issues the trade clearing result, the spot market enters the closed market state in the day, and the sending end province dispatches the new trade application.

(5) Transaction pending phase (T1+60 to T1+90, duration 30 min): and the provincial dispatching receives and decomposes the clear result of the transaction and releases the clear result to the power plant.

(6) Transaction execution phase (T1+90 to T1+270, duration 3 h): and executing a power plant power generation plan and a tie line power transmission plan according to the trading clearing result.

Description of the drawings: t1+ x represents a time point x min after time T1, e.g., T1+30 represents a time point 30min after time T1.

The specific flow is shown in fig. 9, where T1: trading time points within a day; t2: time point of closing market for intra-day transaction, T1+ 30; t3: time point of day transaction release, T1+ 60; t4: start time point allowed for intra-day trading contract, T1+ 90; t5: end point in time allowed by the intra-day trade contract, T1+ 270.

The T-day scenario allows for creation of time T-1 day 21:45 to T day 21: 30. But whether a T-1 day scenario can be created between T-1 days 21:45 to 22:15 depends on whether a T-1 day scenario exists. The time without limitation for creating the T-day scenario is 22:30 on T-1 day to 21:30 on T day.

If a T-1 day plan is created at 21:30 of T-1 day (the last point of time T-1 day to be listed), then a T-day plan can be created at the latest at 22:30 minutes, and the coverage time is 00:00-03:00 (corresponding to the planning system 00:15-02: 60).

After software logs in, different display interfaces such as national tone, branch center, provincial tone and the like are corresponded according to the registration information of application personnel.

As shown in fig. 10, the present invention introduces the national network side function and the provincial side function in two parts.

9. National side function

9-1, day-ahead market function

9-1-1, System Login

In a work station in a region II of a state-transfer intelligent power grid dispatching control system, inputting a cross-region provincial inter-provincial renewable energy resource spot market website at the day time, and entering a login interface

And the function login interface supports users including national tone, branch center, provincial tone and the like.

After logging in, entering a market interface before the spot goods day of the surplus renewable energy source across provincial regions, and displaying information such as transaction date, login units, user names and the like at the upper right corner.

The transaction date is automatically selected according to the current login time, and can also be manually switched.

9-1-2, information bulletin

The information announcement comprises cross-region channel information and transaction channel configuration.

The cross-district channel information comprises the available capacity of each physical connecting line on the day, the pre-planning before the day, the channel quota and other information, and supports the reading of relevant data from the planning system. And supporting the copying function of the quota data.

The number of links having no limit is set, and the links are not displayed in the cross-region channel information, and the default limit is the maximum value when the channels are collectively cleared.

The transaction channel configuration interface supports the operations of management, editing, modification, deletion and the like of the transaction channel, the transaction path and the connecting line, and supports the transaction channel export function.

The spot transaction channel is composed of three-level structures, the provinces and the provinces are connected by the transaction channel, the transaction channel comprises a plurality of transaction paths, and each transaction path is composed of a plurality of sections of connecting lines (or sections). The specific parameters can be set in transaction channel configuration, channel path configuration and contact line management.

In the configuration of the trading channel, the head end, the tail end, the channel name and the stage number of the trading channel between provinces and provinces can be set. The head end and the tail end determine the transaction direction of the channel and the channel name are automatically generated by the system, the stage number represents the maximum priority which can be set by the path to which the channel belongs, and the minimum stage number is 1. Transaction pairs cannot be generated between undefined transaction channel provinces, and transactions cannot be matched.

After the transaction channels between provinces and provinces are determined, the transaction channels need to be defined to specifically pass through which transaction paths, the number of the transaction paths is not limited, and each transaction path is composed of a plurality of sections of connecting lines or sections. In the channel path configuration, according to the transaction channel clicked above, the priority, the ordering, the head-end power transmission fee, the tail-end power transmission fee of the transaction path between provinces and provinces can be set, and the connecting line (or the cross section), the member direction, the power transmission fee and the network loss of each section in the path can be set.

9-1-3, transaction declaration

The reporting monitoring interface in the transaction reporting can integrally browse reporting conditions of provinces and cities, including submitted conditions, uncommitted conditions and the like.

The purchase and sale declaration form interface in the transaction declaration supports the checking of the 96-point volume price curve, but prohibits the checking of declaration electricity price information according to market rules before the market is cleared. And a mode that the sending end sends the quotation through a data file is supported.

9-1-4, focused bidding

The centralized bidding function supports centralized matching of declared data according to market rules and ensures that the bargaining transaction meets the limitation of the tie line.

After entering the clearing stage, the trader with authority clicks the button of 'centralized bidding', the matching calculation can be carried out, and the trading result interface is automatically switched to after the calculation is finished.

9-1-5, transaction result

And the current-day general interface of the transaction result shows the declaration and transaction data of the electricity purchasing and selling parties on the current day in a general way.

The current day profile interface comprises statistical information such as the buyer declaring electric quantity, the seller declaring electric quantity, the buyer transaction electric quantity, the seller transaction electric quantity, the maximum transaction electric quantity of a transaction channel, the maximum transaction electric quantity, the transaction stroke number and the like. The method also comprises graphical declaration, transaction electric quantity display, and graphical electricity purchase and sale declaration and transaction results.

9-1-6, the rest is clear

The spot transaction system before the national dispatching date supports a margin clearing mode, namely a mechanism of ' bidding match + margin clearing ' is realized by taking market pricing, demand quantification and plant station voluntary ' as principles.

The surplus clearing is the declaration of the surplus which is not matched successfully, and the surplus clearing is carried out according to the first matching price and the surplus capacity of the channel. The sending-end enterprise automatically determines whether to participate in clearing of the allowance, and the receiving-end power grid enterprise declares the purchase amount according to the self accepting capacity when declaring the allowance. The surplus clearing is aimed at fully meeting the requirement of the declaration quantity of the transmitting and receiving ends or using up the conveying capacity of the channel, and the price of the equipment of the transmitting and receiving ends is not considered in the clearing process.

9-1-7, data analysis

By selecting data such as statistical time, statistical market, statistical period, provinces, statistical type and the like, inquiring and displaying the data, and summarizing, calculating and displaying the data of the same province and different markets.

9-2, day-to-day market function

9-2-1, login and logout

In a work station in a region II of a state-transfer intelligent power grid dispatching control system, inputting a cross-regional provincial inter-provincial renewable energy resource daily spot market website, and entering a login interface

The user name and the password after the registration and the approval are input in the login interface, and the navigation page can be logged in

After logging in, entering a cross-regional province surplus renewable energy spot market interface, and displaying information such as transaction date, scheme number, transaction time, current time, logging unit, user name and the like at the upper right corner.

The transaction date and the scheme number are automatically selected according to the current system time, and can also be manually switched.

After logging in, clicking a 'home page' button at the upper right corner of a spot market interface in a day of renewable energy resources between provinces across areas to return to a navigation page, clicking a 'logout' button to return to a login page, and logging in again.

9-2-2, Electricity price check

The transaction electricity price viewing interface is used for viewing the clear electricity prices saved in the current transaction section. The clear electricity price is sent to each sending terminal province dispatch by a message mail after the market result before D-1 day, and the sending terminal province dispatch should release the information to the power plant in time so that the power plant can know the clear electricity price as early as possible. And the page information is updated at the same time after the market result is released in the day, and the receiving end can log in and check the page information.

9-2-3, application to market

After receiving the sending-end province-called listing application file, prompting that 'you have 1 new listing application form, please check and collect' on the interface. At present, only the sending province can apply for the file by a small mail, and the system can check and receive the file in real time in the day and prompt a dispatcher.

Clicking the inquiry and receipt in the prompt information above the interface, entering a newly-built scheme interface, and displaying the information of the application form on the interface, wherein the information of the application form comprises information of an application area, an applicant, an application date, application time, application transaction date, transaction starting time, transaction ending time and the like.

9-2-4, information on opening market

The market opening information function is divided into 4 parts such as scheme information, cross-district channel information, matched thermal power adjustable power and trading channel configuration.

The scheme information display interface displays the scheme number and the time to open the market of the current scheme, and displays the time to close the market, the time to release, the time to open the market of the contract, the time interval between the contract ending time and the time to open the market and the specific time of the contract ending time and the time to open the market.

The cross-district channel information interface comprises information such as available capacity of cross-district channel connecting lines, daily preplanning, final quota, channel quota, thermal power degradable output, networking quota under linkage change and the like. The left tree structure is a list of links, the list order being adjustable in the "transaction channel configuration".

The matched thermal power adjustable power interface comprises information such as an original planned value of a unit, minimum output of the unit, degradable output of the unit, climbing rate and the like. The left tree structure is a list of each power plant and the affiliated units. The minimum output of the unit is edited by a 96-point value, and the climbing rate of the unit is set.

The transaction channel configuration is divided into 2 parts of transaction path management, junctor management and the like.

9-2-5, transaction declaration

When the declaration is carried out, the receiving province side accesses the spot market between the national provinces in a message mail mode, and the declaration and release data are stored in a national province II area database. And the sending province dispatcher deploys province dispatcher side software on a province dispatcher spot market server, and the province dispatcher declares quotation data and receives clearing results through a message mail.

The transaction declaration is provided with a declaration monitoring interface, and the declaration conditions of each province and city can be browsed integrally, including submitted, uncommitted and undeclared conditions. In a system interface, different declaration conditions are displayed by adopting different colors, the checking of a 96-point volume price curve is supported, and the checking of declaration electricity price information is forbidden according to market rules before the market is cleared.

9-2-6, focused Bidding

Adopting a centralized bidding clearing mechanism considering channel safety constraint to clear according to time periods:

(1) according to a high-low matching mode, the offers of the sellers are sorted from low to high, the offers of the buyers converted to the sending end according to possible transaction paths are sorted from high to low, the seller with the lowest offer and the buyer with the highest offer are given priority for transaction, and the offers of the buyers and the sellers are cleared in sequence according to the principle that the offer price difference of the buyers and the sellers is decreased. When a plurality of transaction pairs with the same price difference exist, the transaction electric power of the buyer and the seller is distributed according to the transaction declaration electric power proportion;

(2) the transaction is deducted from the transaction amount declared by the buyer and the seller, and the residual buyer declaration amount converts the 'power-electricity price' to the delivery end according to a possible transaction path, and performs price difference pairing with the residual declaration amount of the seller;

(3) if the power transmission channel between the buyer and the seller reaches the power transmission capacity limit value, the transaction of the relevant buyer and the relevant seller is considered to be finished, and the quotation of the seller and the buyer corresponding to the channel is deleted from the quotation sequence, but the buyer and the seller can still buy and sell power to other regional market main bodies;

(4) and (4) sequentially clearing the market until the buyer or the seller declares that the electric quantity is completely paid, or the price difference between the buyer and the seller is negative, or no available space exists in a power transmission channel, and ending the transaction. And (4) the average value of the last one-time transaction electric quantity quoted by the buyer and the seller of each delivery terminal province is the system marginal price, and all transaction electric quantities in the province are settled according to the system marginal price.

The algorithm flow comprises the steps of parameter setting, transaction path setting, path priority processing, transaction pair construction, electricity purchasing quotation conversion, transaction pair sequencing, transaction pair group construction, price difference maximum transaction pair group selection, transaction pair to-be-traded power calculation, to-be-traded power transaction channel distribution, to-be-traded power transaction path distribution, to-be-traded power transaction tie line distribution, tie line boundary crossing judgment, to-be-traded power clearing, information updating, transaction bidding path end judgment, transaction pair bidding end judgment, match ending judgment, successful bidding power calculation, bidding settlement power price calculation and the like.

9-2-7, transaction result

The transaction result interface comprises a current day overview, provincial margin, a channel transaction result, a provincial transaction result, a matched thermal power adjustable power, a branch center confirmation result, a channel clearing result, a visual display, a notification confirmation and the like.

10. Provincial side function

10-1, day-ahead market function

10-1-1, data declaration

And the power generation capacity curve declared by the power plant and the quotation curve participating in the market in the day before are inquired.

Taking the function of 'generating capacity declaration' as an example, the left side is a power plant list, and after a power plant to be inquired is selected and clicked, 96 generating capacity tables and curves declared by the power plant are displayed on the right side of the interface; the 'market quotation in the day' function operation method is the same, and provincial dispatching planning personnel cannot check the declared price of each power plant on an interface according to national phase customs requirements.

10-1-2, power plant declaration inquiry

The method supports the selected power plant to be checked, can see the data declared by the power plant on the right side, and can display the generating capacity declared by the power plant and the day-ahead market quotation curve at the same time, wherein a declaration data curve is arranged above the power plant; and a declaration data table is arranged below, and specific declaration data values can be checked.

10-1-3, complete province declaration inquiry

And the system supports viewing of the total curve data declared in the whole province or corresponding operation.

And the power curves declared by the power plants of the whole province and participating in the market are integrated into a total curve of the whole province after being preliminarily verified. The preliminary verification of the data mainly ensures that the power curve declared by the power plant does not exceed the residual power generation capacity of the power plant.

And reporting the general curve of the provincial quotation to the national standard through a two-zone small mail according to the content of the national standard file format.

The total quotation curve of the whole province is the summary of quotation curves of power plants of the whole province, 96-point power curves declared by the power plants are counted according to the power prices, and each power price corresponds to one power curve.

10-1-4, complete province clearing query

The results can be viewed in the province or relevant operations can be performed.

And supporting the analysis of the national dispatching issuing result file, and analyzing and warehousing.

And supporting the total province clear results to be distributed to each power plant according to corresponding rules.

10-1-5, power plant clearing query

And selecting the power plants to be checked, and seeing 96-point curves of the power plants participating in the day-ahead power market.

Statistical data are arranged above the power plant curve and respectively represent the total trading electric quantity (MWh), the total trading electric price (element) and the average trading electric price (element/MWh) of the power plant in the next day.

10-1-6, user management

The system provides a user management function and mainly realizes the functions of modifying the user types and adding new users, namely the distribution of the power plant and the like.

10-2, day-to-day market function

10-2-1, daily acquisition of electricity prices

According to the trading rules, the spot goods trading in the provincial-crossing area day adopts the day-ahead clear electricity price, the electricity price file can be obtained by clicking 'obtaining day-in electricity price data' in the available capacity interface of the tie line and is analyzed and displayed, and meanwhile, the electricity price information is issued to the power plant. Since the electricity price is the final settlement electricity price, the power plant cannot declare the transaction power when the electricity price information is not released. If the cross-region spot transaction is not achieved before the day, the electricity price information does not exist, and therefore the spot transaction cannot be organized. At present, in order to ensure the organization of spot transaction in the day, the system automatically acquires and distributes transaction electricity price information every day at regular time.

10-2-2, transaction scheme acquisition

And selecting daily transaction, and acquiring a national dispatching and issuing transaction scheme. In order to expand the functions of the transaction mode according to needs, besides the related functions obtained by the transaction scheme, the functions of declaration statistics, transaction initiation, initiation cancellation and the like are also provided. And the scheme file is supported to be acquired, analyzed and stored in a warehouse, and meanwhile, the related transaction information is displayed on an interface.

10-2-3, orderwire available capacity query

And after the state transfer center issues the trading scheme information, the remaining available capacity data of each trans-regional power transmission channel is issued. And supporting to obtain data files and analyzing and storing the residual capacity of each channel.

10-2-4, checking and querying

And the power plant declared electric power and electric quantity in the transaction period can be checked.

10-2-5, provincial declaration and summarization

The method supports the collection of effective declared electric power of the province in a transaction period, and forms a total outbound curve of the province by considering the residual available capacity of a tie line; and forming a data file and sending the data file to a national dispatching center are supported.

10-2-6, provincial clearing and result publishing

The method comprises the steps of supporting to obtain a clearing result file sent by a national dispatching and displaying on an interface, supporting to distribute a total province clearing result to power plants participating in declaration, supporting to modify a real-time base through a file for a tie line increment in the clearing result, sending a trading increment of the power plants to a dispatching platform through the file, and operating on the side of the dispatching platform.

10-2-7, transaction statistics

The system supports the statistics of the transaction results of corresponding dates, including the statistics of the transaction results of the provincial province and the statistics of the transaction results of the power plants; supporting the transmission of the transaction result to the area III; and the transaction result data is transmitted to the plan and is uniformly exported by the plan to participate in transaction settlement.

11. Residual clearing function for promoting clean energy consumption

12. Data statistical analysis function suitable for cross-region renewable energy spot market

The market bid liquidation algorithm is specifically shown in fig. 11, which analyzes the data therein specifically:

(1) provincial level data statistical analysis function:

The statistical data content comprises:

region, date, market, declared electricity, volume of deals, proportion of deals, executed electricity, average price of deals, weighted average price of electricity, maximum price of deals, minimum price of deals, maximum declared electricity, minimum declared electricity.

When the statistical period selects 'week, month and year', the accumulated calculation of the electric quantity and the comparison calculation of the maximum and minimum transaction price and the maximum and minimum declared electric quantity are carried out according to the provincial score and the selected period.

The summary data in the results is a provincial, market calculation performed again in the front-end program based on the statistical data of the query.

(2) Channel data statistical analysis function:

by selecting data such as statistical time, statistical market, statistical period, channel, statistical type and the like, inquiring and displaying the data, and summarizing, calculating and displaying the data of different markets in the same channel.

The statistical data includes:

junctor, date, type, total electricity quantity space, planned electricity quantity, available electricity quantity space, spot traffic electricity quantity, space utilization rate and maximum traffic electricity quantity

When the statistical period selects 'week, month and year', the accumulated calculation of the electric quantity is carried out according to the selected period according to the connecting line.

The summary data in the results is a calculation of the on-line, market that is performed again in the front-end program based on the statistics of the query.

(3) Daily report function of in-day market

1) Transaction profiles

The statistical data comprises areas, the amount of the bargain electric quantity, the reported electric quantity, the proportion of the bargain, the average price of the bargain, the execution electric quantity and the thermal power comparing electric marker post.

2) Channel utilization

The statistical data comprises total electric quantity space, planned electric quantity, available electric quantity space, spot traffic electric quantity, surplus space utilization rate, maximum traffic electric power and occurrence time, and the data is taken from a metadata table of the tie line

3) Transaction detail

The statistical data comprises information such as transaction power, maximum transaction power, minimum transaction power, average transaction power, seller maximum transaction electricity price, seller minimum transaction electricity price, seller weighted average electricity price and the like.

4) Yesterday performance

The statistical data of the category comprises three categories of day-ahead market, day-in market and total. Each major category is divided into three categories of data of the volume of the deals, the average price of the deals and the actual execution volume.

The deviation power (day-ahead transaction power + day-in transaction power) - (day-in execution power)

The technical scheme provided by the invention overcomes the defect that the prior art can not realize the consumption of clean energy in a cross-region range, the prior power system dispatching automation technology does not consider the technical support functions required for promoting the consumption of the clean energy through cross-region spot market transaction, such as system login, information announcement, transaction declaration, centralized bidding, allowance clearing, result release, statistical analysis and other functions, and the corresponding technology for realizing the cross-region renewable energy spot market technical support system by each market main body is lacked.

The invention provides a general scheme, a hardware deployment scheme, a data interaction scheme, a safety mechanism scheme, a national-tone-side day-ahead and day-in market function design scheme and a provincial-tone-side day-ahead and day-in market function design scheme of a cross-regional renewable energy spot market technical support system, so that the market rules and development targets of the cross-regional renewable energy spot market are met, the functional requirements of spot market operation are met, and the practicability and the applicability of the system are ensured.

The spot system provided by the invention flexibly expands the support function and the deployment mode, has maintainability, and meets the requirement of gradual development and perfection of the electric power spot market. The spot system establishes a complete safety mechanism scheme to ensure the transaction safety, data safety and network safety required by market operation. And a complete and unified data interaction management scheme is established, and the integrity, accuracy, reliability, timeliness and consistency of data are guaranteed.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.

Claims

1. A renewable energy trans-regional consumption system, comprising:

2. The system of claim 1, wherein the national tone side matching module comprises:

3. The system of claim 2, wherein the cross-provincial, day-ahead spot market submodule comprises:

4. The system of claim 2, wherein the cross-provincial intra-day spot market submodule comprises:

5. The system according to claim 2, wherein the national-side transceiver module is installed on a national-side workstation, the cross-provincial-side cross-provincial-region in-day spot market sub-module is installed on a national-side cross-provincial-region in-day spot market main standby machine, and the cross-provincial-region in-day spot market sub-module is installed on a national-side cross-provincial-region in-day spot market main standby machine;

6. The system of claim 1, wherein the system further comprises:

7. A method for trans-regional consumption of renewable energy sources, comprising:

8. The method of claim 7, wherein matching based on the intra-day spot market data, the pre-day spot market data, and tie-line information to arrive at a clearing result for a cross-provincial spot market comprises:

9. The method of claim 8, wherein matching the consignee terminals of different provinces based on the current spot market data and tie line information to obtain the shipment results of the current spot market across provinces comprises:

10. The method of claim 8, wherein matching the consignee terminals of different provinces based on intra-day spot market data and tie-line information to obtain the shipment results of the spot market in the inter-provincial region day comprises:

releasing day-to-day electricity price data based on a set bidding mechanism;

11. A renewable energy trans-regional consumption system, comprising:

12. The system of claim 11, wherein the provincial-side transaction service module comprises:

13. The system of claim 12, wherein the dispatch plan sub-module comprises:

14. The system of claim 12, wherein the cross-provincial spot transaction service submodule,

15. The system of claim 12, wherein the cross-provincial spot transaction service submodule further comprises:

16. The system of claim 12, wherein the cross-provincial spot transaction service submodule further comprises:

17. The system of claim 13, wherein the day-ahead scheduling plan service unit is installed on a provincial-side day-ahead scheduling plan server, and the intra-day scheduling plan service unit is installed on an intra-day scheduling plan server;

18. The system of claim 11, wherein the provincial side transmits and receives module to and receives the side of national side and installs on the provincial side communication server, the provincial side trade service module is installed on the provincial side transprovincial spot trade server host computer;

19. A method for trans-regional consumption of renewable energy sources, comprising:

20. The method of claim 19, wherein performing spot market trading based on scheduling data issued by a national scheduling side comprises:

sending surplus capacity data to a national dispatching side;

21. The method of claim 19, wherein the spot market trading is performed based on scheduling data issued by a national scheduling side, further comprising: