KR20140038802A

KR20140038802A - Apparatus and method for displaying information of electric power system interconnected new renewable energy

Info

Publication number: KR20140038802A
Application number: KR1020120105361A
Authority: KR
Inventors: 신진호; 최승환; 김영준; 김영일; 오도은
Original assignee: 한국전력공사
Priority date: 2012-09-21
Filing date: 2012-09-21
Publication date: 2014-03-31
Also published as: KR102014416B1

Abstract

System information display device and method of renewable energy linkage system for visualizing and displaying section information such as tidal current information and quality information in section of power system connected to renewable energy through pipe line diagram (PLD) is presented. The proposed grid information display device of the renewable energy linkage system includes a generator configured to generate at least one of a contraction model and an entire model of the power system in the form of a pipeline diagram using a disconnection diagram of the power system; And a processing unit for displaying the system information of the target facilities included in the power system in association with the generated shortened model or the entire model based on the result of the tidal current calculation of the power system.

Description

APPARATUS AND METHOD FOR DISPLAYING INFORMATION OF ELECTRIC POWER SYSTEM INTERCONNECTED NEW RENEWABLE ENERGY}

The present invention relates to a system information display device and method of the renewable energy linkage system, and more particularly, to the load impact and power quality of the power system according to the development of renewable energy for the system analysis of the renewable energy linkage system The present invention relates to a system information display apparatus and method of a renewable energy linked system for displaying system information including a change.

Due to the depletion of fossil energy, environmental problems, and high oil prices, the spread of renewable energy is on the rise worldwide. In particular, we invest heavily in the construction of new and renewable energy, such as Europe and China, and in accordance with our green growth policy, Korea is also pushing ahead with a policy to increase the share of renewable energy from all energy sources from the current 2% to 10% by 2022. have.

However, as the new renewable energy is operated in connection with the power system, reverse algae are generated in existing unidirectional tidal currents, voltage and frequency fluctuations due to abrupt output fluctuations of renewable energy, generation of harmonics and flicker, power factor abnormalities, Various problems, such as DC power supply, single operation, are occurring.

In order to solve this problem, in the conventional power system analysis method, according to a single line diagram or a critical range such as a system circuit diagram in which a power system is simplified into one line, a substation disconnection diagram, and a unit diagram in a distribution line unit, etc. It uses a method of displaying status in distinguished colors. For example, Korean Patent Publication No. 10-2010-0123161 (name: power system analysis system and analysis method of geographic information-based power system data) collects power system information at an acquisition point, and within a predetermined radius of the acquisition point. It refers to a technique of copying power system information of at least one non-acquisition point located and mapping and outputting power system information of the acquisition point and the unacquisition point to map data. In this case, Korean Patent Laid-Open Publication No. 10-2010-0123161 displays the power system data in colors separated according to a threshold range.

However, the conventional power system analysis method may be suitable for monitoring and analyzing unidirectional tidal current and power quality, but it is difficult to analyze reverse algae (bidirectional algae) and power quality occurring in a system in which renewable energy is connected. .

In addition, the conventional power system analysis method is based on the flow of tidal current by renewable energy, such as' when the direction of the algae changes at what point and how much generation affects which track or section? There is a problem that is difficult to analyze related information.

The present invention has been proposed in view of the above circumstances, and linking renewable energy for visualizing and displaying grid information such as tidal current information and quality information in a power system connected to renewable energy through a pipe line diagram (PLD). An object of the present invention is to provide a system information display apparatus and method for a system.

In order to achieve the above object, the system information display device of the renewable energy linkage system according to an embodiment of the present invention, by using the power line disconnection diagram of the power system at least one of the abbreviated model of the pipeline diagram form and the whole model. A generating unit for generating a; And a processing unit for displaying the system information of the target facilities included in the power system in association with the generated shortened model or the entire model based on the result of the tidal current calculation of the power system.

The generation unit sets any one of the substation-side facilities of the power system as a start node, detects branch points of the power system, and searches for subordinate facilities of each of the detected branch points, thereby selecting any of renewable energy, main customers, and end devices. When one facility is detected, a node is added to create a shortened model.

The generation unit generates a shortened model by adding the lines connected to the detected renewable energy, the main customer, and the end equipment as nodes.

The generation unit sets the end line of the power system as a reference line and arranges it in a straight line at the center starting with the breaker, and arranges the line of the second level of the set reference line to cross the bottom and the top, and from the line of the third level. Creates a shortened model by arranging on one side of the upper level track.

When two or more intersections exist in the track, the generation unit processes the inner loop in the form of a layer, but processes the existing line as the upper layer and processes the inner loop as the lower layer.

If the target equipment is a breaker or a branching point, the processing unit sets and displays the total area based on the equipment supply capacity, and sets and displays the supply amount of the target equipment by applying the equipment load ratio set based on the effective power amount of the tidal current calculation result. Based on the alga calculation results, the algae direction is set and displayed.

If the target equipment is a node, the total area is set and displayed on the basis of the ship type supply capacity, and the processing unit sets and displays the supply amount height of the target node by applying the line load ratio set based on the effective power amount of the tide calculation result. The direction of the tidal current is set and displayed in the same direction as the first node of the power supply side.

When the base power supply and the renewable energy power supply are mixed with the power supplied to the target equipment, the processing unit may adjust the overall height of the inflow power amount based on the ratio of the inflow power amount set by adding the base inflow power and the renewable energy inflow power amount. Display and set the height of the base inflow power amount according to the ratio of the base inflow power amount to the set inflow power amount and apply the first color, and display the renewable energy according to the ratio of the renewable energy inflow power amount to the set inflow power amount. Set the height of the incoming electric power and display it by applying the second color.

If the target equipment is a renewable energy plant, the entire area is set and displayed based on the generation capacity of the renewable energy plant, and the generation efficiency set on the basis of the current generation amount and the generation capacity is displayed as the generation amount height. The height of power generation is displayed by applying the second color.

If the target facility is a customer, the processing unit sets and displays the total area based on the contract power of the customer, and displays the power consumption ratio set based on the current power consumption and the contracted power, as the consumption height, 3 colors are applied.

In order to achieve the above object, the system information display method of the renewable energy linkage system according to an embodiment of the present invention, by the generation unit, using the power line disconnection diagram of the power system in the reduction model of the pipeline diagram form and Generating at least one of the entire model; And displaying, by the processor, the system information of the target facilities included in the power system in association with the generated reduced model or the entire model based on the flow calculation result of the power system.

The generating may include: setting, by the generating unit, any one of the substation side facilities of the power system as a start node; Detecting, by the generation unit, branch points of the power system; Searching, by the generating unit, the subordinate facilities of each of the detected branch points; Adding, by the generation unit, the node to which the searched subordinate facility detects any one of renewable energy, a main customer, and an end facility; And generating, by the generation unit, a shortened model of the power system based on the added nodes.

The generating may further include adding, by the generating unit, the lines connected to the detected renewable energy, the main customer, and the end facility to the node.

The generating may include setting, by the generating unit, the terminal line of the power system as a reference line and arranging the breaker in a straight line at the center of the circuit breaker; Arranging, by the generation unit, the second level line of the set reference line to cross the bottom and the top; And arranging, by the generation unit, from one side of the line of the higher level from the line of the third level.

In the generating step, when two or more intersection points exist in the track, the generating unit processes the inner loop in the form of a layer, processes the existing line as the upper layer, and processes the inner loop as the lower layer.

The step of displaying the system information in association with the generated shortened model or the entire model may include setting and displaying, by the processing unit, a total area based on the facility supply capacity if the target facility is a breaker or a branch point; Setting and displaying, by the processing unit, the supply amount height of the target facility by applying the facility load ratio set based on the effective power amount of the tidal current calculation result; And setting and displaying the algae direction based on the algae calculation result.

The step of displaying the system information in association with the generated shortened model or the entire model may include: setting and displaying, by the processor, the total area based on the ship type supply capacity if the target facility is a node; Setting and displaying, by the processing unit, a supply amount height of a target node by applying a line load ratio set on the basis of the effective power amount of the tidal current calculation result; And setting and displaying the tidal current direction in the same direction as the first node of the power supply side by the processing unit.

The setting and displaying the height of the supply amount of the target node may include setting the sum of the base inflow power and the renewable energy inflow power amount by the processor if the base power supply and the renewable energy power supply are mixed with the power supplied to the target facility. Setting and displaying the total height of the input power based on the ratio of the input power; By the processor, setting the height of the base inflow power amount according to the ratio of the base inflow power amount to the set inflow power amount, and applying and displaying the first color; And setting, by the processing unit, the height of the renewable energy inflow power amount according to the ratio of the renewable energy inflow power amount to apply the second color.

The step of displaying the system information in association with the generated shortened model or the entire model may include: setting and displaying the total area by the processing unit based on the generation capacity of the renewable energy power plant if the target facility is a renewable energy power plant; And setting and displaying, by the processing unit, the generation efficiency set on the basis of the current generation amount and generation capacity as the generation amount height, but in the step of setting and displaying the generation amount height, displaying the generation amount height by applying the second color. do.

The step of displaying the system information in association with the generated shortened model or the entire model may include: setting and displaying the total area by the processing unit based on the contracted power amount of the customer when the target facility is a customer; And setting and displaying, by the processing unit, the power consumption rate set on the basis of the current power consumption and the contracted power amount as the consumption height, but in the setting and displaying the consumption height by applying a third color to the consumption height. Display.

According to the present invention, the system information display device and method of the renewable energy linked system by visualizing and displaying the grid information, such as tidal current information and quality information in the power system connected to the renewable energy through the pipe line diagram (PLD) by section In addition, it can efficiently analyze the power flow and power quality of the renewable energy linkage system. In other words, changes in the load impact and power quality of the power system according to the development of new and renewable energy such as the direction and power of the new renewable energy system, the amount of power, the voltage rise and fall, the effect of power loss, and the load ratio to the rated capacity of the power equipment. It is easy to see. It is easy to identify the problem and establish the countermeasure through visual analysis of the effect of the section load and voltage caused by the reverse current, and the change of the voltage and phase angle caused by the sudden output change. In the case of the general track, the overload generating line can be easily identified in which section the overload occurs, which can be useful for establishing improvement measures.

In addition, the system information display device and method of the renewable energy linked system by visualizing and displaying the grid information, such as tidal current information and quality information in the power system connected to renewable energy through PLD (Pipe Line Diagram), Energy capacity can be improved. In other words, the amount of renewable energy generation is expected to increase to 10% by 2022, thereby providing a user interface that can easily analyze the power system impact on renewable energy linkages, thereby contributing to the increase in capacity.

In addition, the system information display device and method of the renewable energy linked system by visualizing and displaying the grid information, such as tidal current information and quality information in the power system connected to the renewable energy through the pipe line diagram (PLD), power system The utilization rate can be improved. In other words, the policy to meet demand by improving utilization rate of existing facilities rather than new facility investment will continue, and the load status of lines that need to improve utilization rate such as overload lines, lines with heavy load fluctuations and low load lines, and lines with high voltage drops and losses. The utilization of the system can be improved by providing an environment that can be easily analyzed.

In addition, the system information display device and method of the renewable energy linked system by visualizing and displaying the grid information, such as tidal current information and quality information in the power system connected to the renewable energy through the pipe line diagram (PLD), non-specialist system It can also provide an understandable interface. In other words, the existing system circuit diagrams and single line diagrams are exclusive to the power system operation specialists, which is due to the lack of easily understandable interfaces such as PLD. PLDs can easily identify problems even if they are not system experts, and management and multiple users can share problems to make decision resolution faster and more efficiently.

1 is a block diagram illustrating a system information display device of a renewable energy linkage system according to an embodiment of the present invention.
2 is a view for explaining a generation unit of FIG.
3 and 4 are views for explaining the processing unit of FIG.
5 is a flowchart illustrating a system information display method of a renewable energy linkage system according to an embodiment of the present invention.
6 to 8 are flow charts for explaining the abbreviation model and overall model generation step of FIG.
9 to 13 are flowcharts for explaining the step of displaying the system information of FIG. 5 in association with the abbreviated model of the PLD type.
14 to 17 are views for explaining a system information display example applying the system information display apparatus and method of the renewable energy linked system according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention. . In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Hereinafter, a system information display device of a renewable energy linkage system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 1 is a block diagram illustrating a system information display apparatus of a renewable energy linkage system according to an embodiment of the present invention. FIG. 2 is a diagram for describing the generating unit of FIG. 1, and FIGS. 3 and 4 are diagrams for explaining the processing unit of FIG. 1.

As shown in FIG. 1, the system information display apparatus 100 (hereinafter, referred to as “system information display apparatus”) of the renewable energy linkage system includes a generation unit 120 and a processing unit 140.

The generation unit 120 generates a pipe line diagram (PLD) based on a single line diagram (SLD) of the power system. At this time, the generation unit 120 generates an abbreviated model and the entire model of the PLD type based on the SLD. Here, the whole model has the advantage of seeing the effect of new and renewable energy generation in detail in all sections, but the complexity is difficult to grasp at a glance. On the other hand, the abbreviated model simplifies the system by expressing only the main customers and the end line of renewable energy, contract power of 500kW or more, and is configured to understand the impact of renewable energy generation and customer load at a glance. Therefore, the generation unit 120 generates the full model and the shortened model to complement each other the shortcomings of the full model and the shortened model. The generation unit 120 may selectively generate the entire model and the reduced model according to the system configuration or the user's setting.

To this end, as shown in FIG. 2, the generation unit 120 includes an input module 121, a setting module 123, a reduced model generation module 125, a storage module 127, and a whole module generation module. It is composed.

The input module 121 receives an SLD in which the power system is formed in a disconnected form. That is, the input module 121 receives the SLD of the power system previously generated for power system analysis. At this time, the input module 121 receives an SLD such as a system circuit diagram and a disconnection diagram for each line.

The setting module 123 sets whether to generate the entire model and the reduced model. At this time, the setting module 123 sets whether to generate the entire model and the reduced model based on the user setting or system configuration information input by the user.

The reduced model generation module 125 generates a reduced model of the power system using the SLD input through the input module 121 when the reduced module generation module 125 is set to generate the reduced model in the setting module 123. The abbreviation model generation module 125 performs node extraction processing, line abbreviation processing, and intersection point processing to generate an abbreviation model using SLD, and each process will be described in detail as follows.

The reduced model generation module 125 performs node extraction processing for facilities included in the SLD. That is, the reduced model generation module 125 stores any one of the facilities of the substation in the storage module 127 as a start node. In this case, the facilities of the substation include a circuit breaker (CB), a peripheral pressure transformer. The reduced model generation module 125 searches for branch points included in the SLD and temporarily stores them in the storage module 127. The reduced model generation module 125 searches for the subordinate facilities connected to each of the temporarily stored branch points. The reduced model generation module 125 stores the nodes of the temporarily stored branch point and the current equipment (that is, the re-discovered sub-equipment) in the storage module 127 when the discovered sub-equipment is a renewable energy, a main customer, or an end facility. do. That is, the abbreviation model generation module 125 stores only the tracks to which the renewable energy, the main customer, and the terminal equipment are connected, and stores them as nodes together with the branch points. The reduced model generation module 125 searches for the lower facilities for each branch point, and ends the extraction process of the target node of the reduced model if the lower facilities do not exist.

The abbreviation model generation module 125 performs a line abbreviation process for the lines included in the SLD. That is, the abbreviation model generation module 125 sets the end line as the reference line. The reduced model generation module 125 arranges the reference line in a straight line at the center of the breaker. The reduced model generation module 125 alternately arranges the second level line of the reference line to the lower and upper sides. The reduced model generation module 125 is arranged on one side of the third level line with respect to the upper level line.

The abbreviation model generation module 125 performs intersection processing when all of the lines are completed. That is, the abbreviation model generation module 125 increases the interval between the crossing lines because the readability is lowered when the lines cross, so as not to cross. The abbreviated model generation module 125 processes the inner loop for connection between intersection points when two or more intersection points exist in the representation of the line as the same switch. The reduced model generation module 125 performs an inner loop process in a layer concept in order to prevent an intersection point with an existing line being disposed during the inner loop process. In this case, the conventional SLD forms an arc to classify the intersection point by the inner loop, but in the PLD of the present invention, since the height of the line is expressed, the upper and lower parts are treated as a layer concept. That is, the reduced model generation module 125 processes an existing loop as a top layer and an inner loop as a bottom layer.

The storage module 127 stores nodes that are a result of performing the node extraction process of the reduced model generation module 125. That is, the storage module 127 stores nodes for facilities such as breakers, end devices, branch points, and the like generated through the node extraction process.

The entire model generation module 129 generates the entire model of the power system using the SLD input through the input module 121 when the setting module 123 is set to generate the entire model. That is, the entire model generation module 129 extends the height (ie, thickness) of the line configured in the SLD. The entire model generation module 129 collectively adjusts the location of facilities such as lines and power devices configured in the SLD according to the height extension of the lines. The entire model generation module 129 adjusts the location of equipment such as a line and a power device based on a breaker (CB: CIRCUIT BREAKER) with respect to an accumulated value in which the height of the line is extended.

The processor 140 displays the system information based on the algal calculation result. In other words, the processor 140 receives a tidal current calculation result value at a time-point unit and displays system information such as power quantity, load ratio, power quality, and tidal flow direction in conjunction with a pre-generated PLD. To this end, as shown in Figure 3, the processing unit 140 by the setting module 142, and the setting module 142 for setting the area and height of each target facility PLD for displaying the target facility in the PLD shape It is configured to include a display module 144 for displaying the target equipment in the PLD shape based on the area and height of the set PLD. Here, the processor 140 may display the entire model, reactive power, voltage, and loss using the above-described process.

The processor 140 sets a reference value to display the state of the system information (eg, load rate, power quality, etc.). That is, the processor 140 sets reference values for active power, reactive power, current, voltage, loss, and the like. For example, as shown in Figure 4, the load ratio of the active power is applied to the overload determination criteria for each line, the example line is 10,000kW is 100%, indicating the load ratio of the circuit breaker and the line of each section according to this criterion do. Generally, high voltage line or high voltage cable type of each section is installed over 10,000kW, so if overload standard is applied and less than 10,000kW type is installed, it is expressed as the ratio of supply at that time based on the capacity. . Renewable energy is expressed as the ratio of power generation at that time to power generation capacity. Reactive power is applied at 90% power factor, but 4,500kVar is applied for calculation and user convenience.

The processor 140 sets the area, height, tidal direction, color, and the like of the PLD for each facility based on the algal calculation result and the reference value for displaying the system information.

If the target facility is a breaker or branch point, the processing unit 140 compares the supply capacity with each line overload determination criterion (ie, active power of FIG. 3) to determine an area of the target facility (ie, a breaker to be displayed as a PLD, an area of a branch point). Set to display. In other words, if the supply capacity of the breaker and the branch point corresponds to 100% of the overload determination criteria for each line, the processing unit 140 sets and displays the area of the basic arrangement generated. When the supply capacity of the breaker and the branch point is less than or equal to 100% of the overload determination criteria for each line, the processing unit 140 reduces or enlarges the size of the area by the ratio of the supply capacity to the overload determination criteria for each line in the area of the existing basic arrangement. To display. For example, if the breaker supply capacity is 10,000kW while 10,000kW is the reference value, the supply capacity corresponds to 100% of the overload judging criteria for each line, so it is displayed by setting the area of the basic layout. If the breaker's supply capacity is 8,000kW while 10,000kW is the reference value, the supply capacity corresponds to 80% of the overload judging criteria for each line. If the breaker's supply capacity is 12,000kW while 10,000kW is the reference value, the supply capacity corresponds to 120% of the overload judging criteria for each line.

The processor 140 sets a facility load ratio to a reference supply capacity by using the algal calculation result and the effective power amount of the target facility. The processing unit 140 sets and displays the height of the supply amount relative to the total area of the PLD by applying the set facility load ratio.

The processor 140 displays the algae direction by using the algae calculation result.

When the base power supply and the renewable energy power supply are mixed, the processor 140 classifies the amount of inflow power for each node into the amount of base inflow power and the renewable energy inflow power. The processor 140 sets the ratio of the inflow power amount by adding the base inflow power amount and the renewable energy inflow power amount. The processor 140 sets the ratio of the set amount of inflow power to set the overall height of the amount of inflow power displayed on the target facility. The processor 140 sets the respective heights according to the ratio of the base inflow amount and the renewable energy inflow amount from the total height of the inflow amount. The processor 140 displays the base inflow power amount at a predetermined height by applying a first color to the lower end. The processor 140 displays the amount of renewable energy introduced power at a predetermined height by applying a second color to the upper end.

The processor 140 displays a height preset by applying the first color in the case of a single power supply, and displays a height preset by applying a second color in the case of a single power supply of renewable energy.

If the target facility is a node (section), the processor 140 sets and displays the area of the target facility (that is, the area of the node to be expressed as PLD) based on the ship type supply capacity of the line. The processor 140 sets a line load ratio with respect to the ship supply capacity based on the active power amount of the section and the ship supply capacity of the corresponding section among the tide calculation results. The processor 140 sets and displays the height of the supply amount relative to the total area of the PLD by applying the set line load ratio. At this time, in the case of the abbreviated model, the processor 140 sets the height of the supply amount by reflecting the effective power amount of the first section of the power supply side. The processor 140 sets and displays the height of the supply amount relative to the total area of the PLD by using the difference in the effective power amount between the power supply side and the load side branching point (ie, the value obtained by subtracting the effective power amount of the load side branching point from the effective power amount of the previous section of the power supply side). The processor 140 displays the same direction as that of the first section on the power supply side as a tidal current direction.

At this time, when the base power supply and the renewable energy power supply are mixed, the processing unit 140 applies the inflow power ratio of the breaker or the branch point connected to the power supply side of the node in the same manner, and the total effective power amount of the corresponding section is based on the base inflow power amount and the new power supply. Separate by the amount of renewable energy input. The processor 140 calculates a ratio of the amount of inflow power by adding the amount of base inflow power and the amount of renewable energy inflow power. The processor 140 sets the ratio of the calculated amount of incoming power to set the overall height of the amount of incoming power displayed on the target facility. The processor 140 sets the respective heights according to the ratio of the base inflow amount and the renewable energy inflow amount from the total height of the inflow amount. The processor 140 displays the base inflow power amount at a predetermined height by applying a first color to the lower end. The processor 140 displays the amount of renewable energy introduced power at a predetermined height by applying a second color to the upper end. The processor 140 displays a height preset by applying the first color in the case of a single power supply, and displays a height preset by applying a second color in the case of a single power supply of renewable energy.

If the target facility is a renewable energy plant, the processing unit 140 displays the generated capacity by setting the total area (that is, the area of the renewable energy plant to be represented by PLD). The processor 140 sets the generation efficiency based on the generation amount and generation capacity at that time. The processor 140 displays the set power generation efficiency by setting the power generation height. At this time, the processor 140 displays the generated amount by applying the second color.

If the target facility is a major customer, the processing unit 140 sets and displays the total area (that is, the area of the major customer to be expressed as PLD) as the contracted power amount.

The processor 140 sets the power consumption rate based on the power consumption amount and the contract power amount at that time. The processor 140 displays the set power consumption rate as the consumption height. At this time, the processor 140 displays the consumption height by applying the third color.

The processor 140 displays the type symbol of the terminal switchgear when the target facility is the terminal switchgear.

Hereinafter, a method of displaying system information of a renewable energy linkage system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 5 is a flowchart illustrating a system information display method of a renewable energy linkage system according to an embodiment of the present invention. 6 to 8 are flowcharts illustrating the steps of generating the reduced model and the entire model of FIG. 5, and FIGS. 9 to 13 illustrate the step of displaying the system information of FIG. 5 in association with the reduced model of the PLD type. Flowchart for

First, the system information display apparatus 100 generates an abbreviation model and an entire model in the form of a pipe line diagram (PLD) using an existing single line diagram (SLD) (S100). Hereinafter, the abbreviated model and the entire model generation step will be described in more detail with reference to FIG. 6.

The generation unit 120 receives an existing SLD (S110). That is, the generation unit 120 receives the SLD configured as the disconnected power system. At this time, the generation unit 120 receives an SLD such as a system circuit diagram and a disconnection diagram for each line.

The generation unit 120 sets whether to generate the entire model and the reduced model. At this time, the generation unit 120 sets whether to generate the entire model and the reduced model based on the user setting or system configuration information input by the user. If it is set to generate a reduced model (S120; Yes), the generation unit 120 generates a reduced model of the PLD type by using the existing input SLD (S130). Hereinafter, the steps of generating the abbreviated model will be described in more detail with reference to FIGS. 7 and 8.

The generation unit 120 stores the start node (S131). That is, the generation unit 120 stores any one of the facilities of the substation (for example, a circuit breaker (CB), a peripheral voltage, etc.) as a start node.

The generation unit 120 searches for the lower facilities of the stored start node (S132). If there is a subordinate facility as a result of the search (S133; YES), the generation unit 120 determines whether the found subordinate facility is a branch point (S134). At this time, the generation unit 120 searches for the lower facilities of the branch point after temporarily storing if the found lower facilities are branch points.

If the discovered sub-equipment is a renewable energy power plant, a customer, or an end (S135; yes, or S136; yes), the generation unit 120 may temporarily store the node of the branch point and the current facility (ie, the re-discovered sub-unit). Add and store (S137). That is, the generation unit 120 is shortened by storing as a node with a branch point only a line connected to a renewable energy power plant, a main customer, an end facility.

The generation unit 120 searches for the subordinate facilities for each branch point, and ends the extraction process of the target node of the abbreviation model if the subordinate facilities do not exist. Thereafter, the generation unit 120 performs a line reduction process on the lines included in the SLD.

The generation unit 120 sets the end line as the reference line. The generation unit 120 arranges the reference line in a straight line at the center of the breaker (S138).

The generation unit 120 alternately arranges the second level line of the reference line alternately between the lower end and the upper end (S139). At this time, the generation unit 120 is arranged on one side of the line of the higher level from the line of the third level.

The generation unit 120 performs an intersection process when all of the tracks are completed (S140). In other words, since the readability is lowered when the tracks intersect, the generation unit 120 increases the interval of the intersecting lines so as not to intersect.

The generation unit 120 processes an inner loop for connection between intersection points when two or more intersection points exist in the representation of the line as the same switch (S141). The generation unit 120 performs an inner loop process in a layer concept in order to prevent an intersection point with an existing line disposed during the inner loop process. In this case, since the height of the track is expressed, the generation unit 120 processes the upper and lower portions as a layer concept. That is, the generation unit 120 processes an existing loop as an upper layer and an inner loop as a lower layer.

If it is not set to generate a reduced model (or set to generate a whole model), the generation unit 120 extends the lines included in the inputted existing SLD (S150). The generation unit 120 extends the height (ie, thickness) of the line configured in the input SLD.

The generation unit 120 adjusts the entire line based on the extended lines (S160). That is, the generation unit 120 collectively adjusts the position of facilities such as the line and power equipment configured in the SLD as the height of the line is expanded. The generation unit 120 adjusts the position of facilities such as a line and a power device against a cumulative value in which the height of the line is expanded based on a breaker (CB: CIRCUIT BREAKER).

If it is selected to display the reduced model (S200; Yes), the system information display device 100 displays the system information of the facilities included on the basis of the algal calculation results in association with the reduced model of the PLD type (S300). This will be described in more detail with reference to FIG. 9.

The processing unit 140 receives the algal calculation result of the system (S305). Thereafter, the processor 140 sets the area, height, tidal direction, color, etc. of the PLD for each facility based on the tidal calculation result and the predetermined reference value input for displaying the system information. At this time, the processor 140 sets reference values for active power, reactive power, current, voltage, loss, and the like.

If the target facility is a breaker or branch point (S310; YES), the processing unit 140 displays the breaker or branch point by PLD processing (S320). Hereinafter, the step of displaying the circuit breaker or branching point by PLD will be described in more detail with reference to FIG. 10.

The processor 140 sets and displays the total area of the breaker or branch point based on the facility supply capacity (S321). That is, when the target equipment is a breaker or a branch point, the processing unit 140 sets and displays the area of the target facility (that is, the breaker to be displayed as a PLD, the area of the branch point) by comparing the supply capacity with the line overload determination criteria. When the supply capacity of the breaker and the branch point corresponds to 100% of the overload determination criteria for each line, the processor 140 sets and displays the area of the basic arrangement that is generated. When the supply capacity of the breaker and the branch point is less than or equal to 100% of the overload determination criteria for each line, the processing unit 140 reduces or enlarges the size of the area by the ratio of the supply capacity to the overload determination criteria for each line in the area of the existing basic arrangement. To display. For example, if the breaker supply capacity is 10,000kW while 10,000kW is the reference value, the supply capacity corresponds to 100% of the overload judging criteria for each line, so it is displayed by setting the area of the basic layout. If the breaker's supply capacity is 8,000kW while 10,000kW is the reference value, the supply capacity corresponds to 80% of the overload judging criteria for each line. If the breaker's supply capacity is 12,000kW while 10,000kW is the reference value, the supply capacity corresponds to 120% of the overload judging criteria for each line.

The processor 140 sets a facility load ratio based on the effective power amount of the tidal current calculation result (S322). That is, the processor 140 sets the load ratio to the reference supply capacity by using the algal calculation result and the effective power amount of the target facility.

The processing unit 140 sets the supply amount height based on the set facility load ratio (S323). The processing unit 140 sets and displays the height of the supply amount relative to the total area of the PLD by applying the set load ratio.

The processor 140 sets the flow direction of the breaker or branch point (S324). That is, the processing unit 140 sets and displays the algae direction using the algae calculation result.

When the base power supply and the renewable energy power supply are mixed (S325; YES), the processor 140 sets the supply amount height by adding the amount of incoming power (S326). That is, the processor 140 classifies the amount of inflow power for each node into the amount of base inflow power and the amount of renewable energy inflow power. The processor 140 sets the ratio of the inflow power amount by adding the base inflow power amount and the renewable energy inflow power amount. The processor 140 sets the ratio of the set amount of inflow power to set the overall height of the amount of inflow power displayed on the target facility.

The processor 140 sets the height of the base inflow power amount and displays the first color by applying the first color (S327). That is, the processor 140 sets the respective heights according to the ratio of the base inflow power amount to the total height of the inflow power amount. The processor 140 displays the base inflow power amount at a predetermined height by applying a first color to the lower end.

The processor 140 sets the height of the amount of renewable energy input power and displays the second color by applying the second color (S328). That is, the processor 140 sets the respective heights according to the ratio of the renewable energy inflow power amount to the overall height of the inflow power amount. The processor 140 displays the amount of renewable energy introduced power at a predetermined height by applying a second color to the upper end.

In the case of the base single power supply (S329; YES), the processor 140 displays the predetermined height by applying the first color in the case of the base single power supply (S330).

The processor 140 displays a predetermined height by applying the second color when the single power supply of the renewable energy is performed (S331).

If the target facility is a node (section) (S335; YES), the processing unit 140 displays the node (section) by PLD processing (S340). Hereinafter, the step of displaying the node (section) by PLD processing will be described in more detail with reference to FIG. 11.

The processor 140 sets and displays the total area of the node (section) based on the ship type supply capacity (S341). That is, if the target facility is a node (section), the processor 140 sets and displays the area of the target facility (that is, the area of the node to be represented by the PLD) based on the ship type supply capacity of the line.

The processor 140 sets the line load factor based on the effective power amount of the tidal current calculation result (S342). That is, the processor 140 sets the line load ratio to the ship supply capacity based on the active power amount of the section and the ship supply capacity of the section among the tide calculation results.

The processor 140 sets the supply amount height based on the set line load ratio (S343). That is, the processor 140 sets and displays the height of the supply amount relative to the total area of the PLD by applying the set line load ratio. At this time, in the case of the abbreviated model, the processor 140 sets the height of the supply amount by reflecting the effective power amount of the first section of the power supply side. The processor 140 sets and displays the height of the supply amount relative to the total area of the PLD by using the difference in the effective power amount between the power supply side and the load side branching point (ie, the value obtained by subtracting the effective power amount of the load side branching point from the effective power amount of the previous section of the power supply side).

The processor 140 sets the direction of the tidal current of the node (section) (S344). At this time, the processing unit 140 sets the same direction as the first section of the power supply side to display the current direction of the section.

When the base power supply and the renewable energy power supply are mixed (S345; YES), the processor 140 sets the supply amount height based on the effective power amount and the ship type supply capacity (S346).

At this time, the processor 140 applies the same ratio of inflow power of the breaker or branch point connected to the power supply side of the node to divide the total effective power of the corresponding section into the base inflow power and renewable energy inflow power. The processor 140 calculates a ratio of the amount of inflow power by adding the amount of base inflow power and the amount of renewable energy inflow power. The processor 140 sets the ratio of the calculated amount of incoming power to set the overall height of the amount of incoming power displayed on the target facility.

The processor 140 sets the height of the base inflow power amount and displays the first color by applying the first color (S347). That is, the processor 140 sets the respective heights according to the ratio of the base inflow power amount to the total height of the inflow power amount. The processor 140 displays the base inflow power amount at a predetermined height by applying a first color to the lower end.

The processor 140 sets the height of the new renewable energy input power amount and displays the second color by applying the second color (S348). That is, the processor 140 sets the respective heights according to the ratio of the renewable energy inflow power amount to the overall height of the inflow power amount. The processor 140 displays the amount of renewable energy introduced power at a predetermined height by applying a second color to the upper end.

In the case of the base single power supply (S349; YES), the processor 140 displays the predetermined height by applying the first color in the case of the base single power supply (S350).

The processor 140 displays a predetermined height by applying the second color when the single power supply of the renewable energy is performed (S351).

If the target facility is a renewable energy power plant (S355; YES), the processing unit 140 displays the renewable energy plant by PLD processing (S360). Hereinafter, the step of displaying the new renewable energy power plant by PLD process will be described in more detail with reference to FIG. 12.

The processor 140 sets and displays the total area based on the generation capacity of the renewable energy power plant (S361). That is, if the target facility is a renewable energy power plant, the processor 140 displays the power generation capacity by setting the total area (that is, the area of the renewable energy power plant to be represented by PLD).

The processor 140 sets the power generation efficiency based on the power generation amount (S362). That is, the processor 140 sets the power generation efficiency based on the amount of power generated at the corresponding time point relative to the power generation capacity.

The processor 140 sets the generation amount height based on the set generation efficiency (S363). The processor 140 displays the set power generation height. At this time, the processor 140 displays the generated amount height by applying the second color (S364).

If the target facility is the main customer (S370; Yes), the processing unit 140 displays the main customer by PLD processing (S380). Hereinafter, with reference to the accompanying FIG. 13, the step of PLD processing and displaying the main customer will be described in more detail as follows.

The processor 140 sets and displays the total area based on the contracted power amount (S381). That is, if the target facility is the main customer, the processing unit 140 sets and displays the total area (that is, the area of the main customer to be expressed as PLD) as the contract power amount.

The processor 140 sets a consumption rate based on the amount of power consumed (S382). That is, the processor 140 sets the power consumption rate based on the power consumption at the corresponding time point compared to the power consumption.

The processor 140 sets the consumption amount height based on the set consumption ratio (S383).

The processor 140 displays the consumption height. At this time, the processor 140 displays the consumption height by applying the third color (S384).

The processor 140 displays the terminal switchgear when the target facility is the terminal (S390). That is, the processor 140 displays the type symbol of the terminal switchgear when the target facility is the terminal switchgear.

If the display of all the target equipment PLD is not completed (S395; No), the processing unit 140 repeats the steps S310 to S390 described above.

If the reduced model display is not set (or set to full model display), the system information display apparatus 100 displays the system information of the facilities included on the basis of the algal calculation result in association with the entire model of the PLD type (S400). ).

Hereinafter, a system information display example applying the system information display apparatus and method of a renewable energy linked system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 14 to 17 are views for explaining a system information display example to which the system information display apparatus and method of the renewable energy linked system according to an embodiment of the present invention.

14 is a screen displaying a reduced model of the system operation status for the active power by applying the system information display device and method of the renewable energy linked system according to an embodiment of the present invention.

From the breaker (CB), the effective power amount, load rate, and direction of the current for each section are displayed. In particular, it is displayed to easily grasp the change in the amount and flow of each section, the influence of the new renewable energy generation and the change in power quality in the system connected to renewable energy.

At this time, the base power supply is represented by the orange series (ie, the first color) and the renewable power supply is divided into the green series (ie, the second color), so that the influence section according to the renewable energy generation can be easily identified. .

In addition, the power consumption is displayed in a light blue series (third color) to visually grasp the state of power supply and consumption. It is easy to see how the base power supply and renewable energy power supply is flowing in proportion to the amount of electricity distributed in each section and are being supplied to the main customers and the end.

The amount and direction of the base power supply and the renewable energy power supply reflect the result of tide calculation, but it is difficult to distinguish between the two power supplies because the two power supplies are mixed at the same time, but it is assumed that it is proportional to the ratio of the two power supplies. . For example, at 379 bifurcation, the base power supply and renewable energy supply are 2,094kW and 567kW, respectively, so that 79% and 21% of the same ratio are applied to 805kW and 217kW, respectively.

In another expression method, the amount of power to be mixed may be expressed in another color to express the power to be mixed. In this case, it can be seen how far the mixed power affects, but there is a disadvantage that the amount of renewable energy is not distinguished.

As the solar power 500kW and 1,000kW power generation at the end of the base line, it can be seen that the reverse algae phenomenon occurred in the section up to 385 between sulfuric acid. In this case, the reverse algae occurs during the daytime when the solar power is generated, and the direction of the normal tidal current can be reversed between the daytime and the nighttime during the nighttime period when the solar power is not generated. As a result, the voltage may change from day to night or from time to time, indicating that countermeasures are necessary.

The index map expresses the entire system configuration of the reduced model or the entire model in a small size, and displays the current visible system position in the entire system when the user zooms in / out / moves. The index map may move to a specific section in the index map. Highlighted sections can also be highlighted in the index map to induce a weighted analysis.

15 shows an example of PLD display of reactive power. Since reactive power management is important in the renewable energy linkage system, reactive power is expressed in PLD so that the flow of reactive power can be easily understood. In this case, the active power and the reactive power may be simultaneously expressed. According to renewable energy generation, reactive power may flow in a different direction from active power, which can be usefully analyzed.

Fig. 16 shows an example of the PLD display of the current. The current is similar to the flow of active power, but the flow of current is also important, so it represents the flow of current. As an example of the overload line, the current exceeding 100% at the 15 branch point between CB and sulfuric acid is represented by a dotted line on the top.

17 shows an example of the PLD display of the voltage. Voltage represents the flow of voltage as the most important factor in power quality management. The voltage is set to 100% of the reference voltage, and the ratio of the excess value is calculated to highlight the equipment and the section where the constant / instantaneous voltage fluctuation rate is 2% and the voltage drop rate is more than 10% to induce a intensive analysis.

As described above, the system information display device and method of the renewable energy linked system by visualizing and displaying the grid information, such as tidal current information and quality information in the power system connected to the renewable energy through the pipe line diagram (PLD) by section In addition, it can efficiently analyze the power flow and power quality of the renewable energy linkage system. In other words, changes in the load impact and power quality of the power system according to the development of new and renewable energy such as the direction and power of the new renewable energy system, the amount of power, the voltage rise and fall, the effect of power loss, and the load ratio to the rated capacity of the power equipment. It is easy to see. It is easy to identify the problem and establish the countermeasure through visual analysis of the effect of the section load and voltage caused by the reverse current, and the change of the voltage and phase angle caused by the sudden output change. In the case of the general track, the overload generating line can be easily identified in which section the overload occurs, which can be useful for establishing improvement measures.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It will be understood that the invention may be practiced.

100: system information display device 120: generation unit
121: input module 123: setting module
125: reduced model generation module 127: storage module
129: full model generation module 140: processor
142: setting module 144: display module

Claims

A generator configured to generate at least one of an abbreviated model and an entire model of the power system using a power line disconnection diagram; And
A system of a renewable energy linkage system, characterized in that it comprises a processing unit for displaying the system information of the target equipment included in the power system in connection with the generated reduced model or the entire model based on the flow calculation result of the power system. Information display device.

The method according to claim 1,
Wherein the generation unit comprises:
Set any one of the substation side equipments of the power system as a start node, detect the branch points of the power system, and search the sub-equipment of each of the detected branch points to search for any of renewable energy, major customers, and end equipment. System information display device of the renewable energy linkage system, characterized in that for generating a reduced model by adding a node if one facility is detected.

The method of claim 2,
Wherein the generation unit comprises:
System information display system of the renewable energy linkage system, characterized in that for generating a reduced model by adding the lines connected to the detected renewable energy, major customers, terminal equipment as a node.

The method according to claim 1,
Wherein the generation unit comprises:
Set the end line of the power system as a reference line and arrange a straight line at the center starting from the breaker, and arrange the second level line of the set reference line to cross the lower and upper ends, and from the third level line. A system information display device of a renewable energy linkage system, characterized in that for generating a reduced model by placing on one side based on the upper level of the track.

The method according to claim 1,
Wherein the generation unit comprises:
If there are two or more intersections on the track, the system loop information processing system is characterized in that the inner loop is processed as a layer, but the existing loop is processed as a top layer and the inner loop is processed as a bottom layer. .

The method according to claim 1,
Wherein,
If the target equipment is a breaker or a branching point, the total area is set and displayed based on the equipment supply capacity, and the height of the supply quantity of the target equipment is set and displayed by applying the equipment load ratio set based on the effective power amount of the flow calculation result. System information display device of the renewable energy linkage system, characterized in that for setting the algae direction based on the alga calculation results.

The method according to claim 1,
Wherein,
If the target equipment is a node, the total area is set and displayed based on the ship type supply capacity, and the height of the supply amount of the target node is set and displayed by applying the line load ratio set based on the effective power amount of the tidal current calculation result. System information display device of the renewable energy linkage system, characterized in that by setting the direction of birds flow in the same direction as the node.

The method according to claim 6 or 7,
Wherein,
When the base power supply and the renewable energy power supply are mixed with the power supplied to the target facility, the total height of the inflow power amount is set based on the ratio of the inflow power amount set by adding the base inflow power amount and the renewable energy inflow power amount. The height of the base inflow power amount is set according to the ratio of the base inflow power amount to the set inflow power amount, and is displayed by applying a first color, and the new color is in accordance with the ratio of the renewable energy inflow power amount to the set inflow power amount. A system information display device of a renewable energy linked system, characterized in that by setting the height of the amount of renewable energy inflow power applied to display the second color.

The method according to claim 1,
Wherein,
If the target facility is a renewable energy plant, the total area is set and displayed based on the generation capacity of the renewable energy plant, and the generation efficiency set on the basis of the current generation amount and the generation capacity is displayed as the generation amount height. The grid information display device of the renewable energy linkage system characterized in that the height of the power generation is displayed by applying the second color.

The method according to claim 1,
Wherein,
If the target facility is a customer, the total area is set and displayed based on the contracted power amount of the customer, and the power consumption rate set on the basis of the current power consumption and the contracted power amount is displayed as the consumption height, but the third consumption height is displayed. System information display device of the renewable energy linked system, characterized in that by applying the color display.

Generating, by the generation unit, at least one of an abbreviated model and an entire model of the power system in the form of a pipeline diagram using the disconnection diagram of the power system; And
And displaying, by the processor, the system information of the target facilities included in the power system in association with the generated reduced model or the entire model based on the algal calculation result of the power system. How to display grid information of linked system.

The method of claim 11,
Wherein the generating comprises:
Setting, by the generation unit, any one of substation side equipments of the power system as a start node;
Detecting, by the generation unit, branch points of the power system;
Searching, by the generation unit, a subordinate facility of each of the detected branch points;
Adding, by the generation unit, a node when the discovered subordinate facility detects any one of renewable energy, a main customer, and an end facility; And
And generating, by the generation unit, an abbreviated model of the power system based on the added nodes.

The method of claim 12,
Wherein the generating comprises:
And generating, by the generation unit, lines connected to the detected renewable energy, main customers, and terminal equipment as nodes.

The method of claim 11,
Wherein the generating comprises:
Setting, by the generation unit, the end line of the power system as a reference line and arranging the breaker in a straight line at the center of the circuit breaker;
Arranging, by the generation unit, a line of a second level of the set reference line to cross a lower end and an upper end;
And generating, by the generation unit, from one side of the third level line to one side of the higher level line.

The method of claim 11,
Wherein the generating comprises:
By the generation unit, if there are two or more intersection points on the track, the process is processed as an inner loop in the form of a layer, and processes existing lines as the upper layer and processes the inner loop as the lower layer. How to display grid information of a grid.

The method of claim 11,
The step of displaying the system information in association with the generated reduced model or the entire model,
Setting and displaying, by the processing unit, a total area based on the facility supply capacity if the target facility is a breaker or a branch point;
Setting and displaying, by the processing unit, a supply amount height of a target facility by applying a facility load ratio set based on the effective power amount of the tidal current calculation result; And
System information display method of the renewable energy linkage system, characterized in that it comprises the step of setting the algae direction based on the alga calculation results.

The method of claim 11,
The step of displaying the system information in association with the generated reduced model or the entire model,
Setting, by the processing unit, the total area based on the ship type supply capacity if the target facility is a node;
Setting and displaying, by the processing unit, a supply amount height of a target node by applying a line load ratio set based on the effective power amount of the tidal current calculation result; And
And setting, by the processing unit, a tidal current direction in the same direction as the first node of the power supply side, and displaying the grid information of the renewable energy linkage system.

The method according to claim 16 or 17,
Setting and displaying the supply amount height of the target node,
When the base power supply and the renewable energy power supply are mixed with the power supplied to the target facility by the processing unit, the inflow power amount is based on the ratio of the inflow power amount set by adding up the base inflow power amount and the renewable energy inflow power amount. Setting and displaying an overall height;
Displaying, by the processing unit, a height of the base inflow power amount according to a ratio of the base inflow power amount to the set inflow power amount and applying and displaying a first color; And
And setting, by the processor, the height of the renewable energy inflow power amount according to the ratio of the renewable energy inflow power amount to displaying the second color by applying a second color. How to display grid information of a grid.

The method of claim 11,
The step of displaying the system information in association with the generated reduced model or the entire model,
Setting and displaying, by the processing unit, a total area based on a generation capacity of the renewable energy power plant if the target facility is a renewable energy power plant; And
By the processing unit, comprising the step of setting the generation efficiency set on the basis of the current generation amount and the generation capacity to generate the generation amount height,
In the step of setting and displaying the generation amount height, the grid information display method of the renewable energy linkage system, characterized in that to display the height of the generation amount by applying a second color.

The method of claim 11,
The step of displaying the system information in association with the generated reduced model or the entire model,
Setting, by the processing unit, a total area based on a contract power amount of the customer if the target facility is a customer; And
And setting and displaying, by the processor, the power consumption rate set based on the current power consumption and the contracted power amount as the consumption height.
In the setting and displaying at the consumption height, the grid information display method of the renewable energy linkage system, characterized in that to display the consumption height by applying a third color.