KR101650513B1 - Emergency Generator Operation Method for Demand Response Resource System - Google Patents

Abstract

An emergency generator operating method is provided in the demand response resource system. In this method of operating the generator, the variable cost for the generator operation is calculated, the profit from the generator operation is calculated by referring to the variable cost, and the generator is operated when the profit exceeds the reference amount. Thus, unlike the conventional method of utilizing the demand reaction resource accompanying the inconvenience of the user, the profit can be generated without inconveniencing the user.

Description

{Emergency Generator Operation Method for Demand Response Resource System}

The present invention relates to a method of operating an emergency generator, and more particularly, to a method for maximizing economic efficiency by efficiently operating an emergency generator in a demand response resource system.

Power consumption is concentrated in the winter and in the summer. In addition, it is not efficient to expand the power generation facilities with the construction period of several years, since the utilization is low except for the period in which the power consumption is concentrated.

For resilient power supply, pumped-storage power generation and cogeneration power generation can be used, but construction and operation costs are higher than those of existing base power generation facilities. Large-scale power plants with economies of scale aimed at efficient budget use made it difficult to supply resilient power with low power generation costs.

As a solution to this, Demand Response resources appeared. The user is able to flexibly adjust the demand by reducing the power consumption for an arbitrary time. From a supply perspective It is a consumption management solution from a demand perspective, not a facility operation. Fixed costs are smaller than base power plants, and resource recruitment is expected for all electric consumers.

As a market for this, KPX opened an intelligent DR market, instructed to cut down to one hour between two hours and four hours a day, and participate in the intelligent DR market for up to 60 hours a year. Capacity settlement is up to 64,000 won / kW, and down payments according to the reduction amount are up to 550 won / kWh.

However, current DR solutions are passive DR by human, and it may be difficult to guarantee the reliability of operation in accordance with the time of opening of smart market. Therefore, it is penalized if it can not fulfill the promise of reduction instruction and it is easy to guarantee reliability One ADR requires facilities to control the power consumption equipment.

On the other hand, power consumption devices subject to automation control have difficulty in ensuring interoperability due to a number of different manufacturers. In order to solve this problem, we have made efforts to secure interoperability based on international standards, but it seems to be insufficient to solve urgent supply and demand imbalance.

In addition, the smart DR market is opened during low season or during high season. From a consumer standpoint, demand for heating and cooling load is high, and it is accompanied by inconvenience.

In particular, demand-side users who are at risk of providing reserve resources will be given inconvenience costs by giving up the benefits of power use. Therefore, it is required to search for a method of obtaining compensation by contributing to the stabilization of the system by reserving reserve without accompanying the inconvenience of the user.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and system for operating a generator on the basis of a result of a preliminary calculation as to whether profit is generated in accordance with operation of a generator .

Also, in this process, a method and system for operating a generator for operating an emergency generator, which is an idle resource, within a rated operating time limit per year is provided.

According to an aspect of the present invention, there is provided a method of operating a generator, the method comprising: calculating a variable ratio of the generator operation; Calculating a profit on the basis of the generator operation with reference to the variable ratio; And operating the generator if the profit exceeds a reference amount.

The calculating step may calculate a price obtained by subtracting the variable cost from the tapped price participating in the intelligent DR market as the profit.

Further, the calculating step may calculate a price obtained by subtracting the variable cost from the base rate reduction amount due to the reduction of the applied power, as the profit.

The calculating step may calculate a price obtained by subtracting the variable cost from the peak electricity price of the demand management type CPP plan by the profit.

The operation step may further include stopping the operation of the generator when the rated operation time of the generator is exceeded.

According to another aspect of the present invention, there is provided a generator operating system including: a calculator for calculating a variable cost associated with a generator operation and calculating an amount of profit from the generator operation with reference to the variable cost; And an operating unit for operating the generator if the profit amount calculated in the calculating unit is equal to or greater than a reference amount.

As described above, according to the embodiments of the present invention, profit can be generated without inconveniencing the user, unlike the existing demand reaction resource utilization method accompanying the inconvenience of the user.

In addition, according to embodiments of the present invention, the fixed cost to be applied to the monitoring equipment for the electric consuming equipment necessary for the demand response resource solution and the control equipment for automating it is relatively small.

In addition, according to embodiments of the present invention, active reliability is higher than currently automated demand response (ADR), which is not guaranteed to be interoperable.

In addition, the emergency generator, which is an idle resource, can be periodically operated to reduce the possibility of failure due to long-term unavailability, and to prevent the life span of the emergency generator from being shortened by managing the rated operation time.

1 is a block diagram of an emergency generator operating system according to an embodiment of the present invention,
2 and 3 are flow charts provided in the description of a method of operating an emergency generator according to another embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a block diagram of an emergency generator operating system according to an embodiment of the present invention. The emergency generator operating system according to the embodiment of the present invention is a system for creating profit by operating the emergency generator without inconvenience of the user in the demand reaction resource system.

The emergency generator operating system according to the embodiment of the present invention includes a communication unit 110, a storage unit 120, a profit calculation unit 130, and an emergency generator operation unit 140.

The communication unit 110 is connected to a power supplier server (not shown) and a power exchange server (not shown) to acquire information necessary for generating a profit by operating the emergency generator. In this information, intelligent DR market establishment announcement and peak demand date of demand management type CPP plan are obtained.

The storage unit 120 stores information on the power usage status of the customer. This information is used to determine if rate-applied power (formerly maximum demand) reduction can occur due to the operation of the emergency generator.

The profit calculation unit 130 calculates the total amount of electric charges saved by the operation of the emergency generator. Then, the profit calculation unit 130 calculates the variable cost generated by the operation of the emergency generator.

The variable cost includes the maintenance cost and depreciation cost as well as the fuel cost necessary to operate (operate) the emergency generator.

The amount obtained by subtracting the variable cost from the total amount of savings calculated by the profit calculation unit 130 corresponds to the profit. However, the total saved amount is larger than the variable cost. In the opposite case, there is no profit.

Total savings include: 1) tactical price of the intelligent DR market, 2) reduction of the base rate due to reduced electricity consumption rate, and 3) peak day electricity charge on the demand management type CPP plan.

'1) The tactical price of the intelligent DR market' is the payment due to not using electricity in the day / time zone participating in the intelligent DR market.

'2) Fee The amount of basic charge reduction by power reduction' refers to the difference of base charge which is reduced due to the decrease of maximum electric power demand due to not using electric power when there is a possibility of maximum electric power demand.

'3) Peak-day electricity bill in demand-managed CPP plan' is the electricity bill saved due to not using electric power on peak days.

The emergency generator operation unit 140 determines the operation of the emergency generator in the corresponding date / time zone when it is determined that the profit is generated by the operation of the emergency generator in the profit calculation unit 130.

If the emergency generator exceeds the rated operation time, the emergency generator operation unit 140 stops operation of the emergency generator for durable light saving.

2 and 3 are flow charts provided in the description of a method of operating an emergency generator according to another embodiment of the present invention.

2, when the intelligent DR market is opened (S210-Y), the profit calculating unit 130 calculates the tapped price of the intelligent DR market and the variable cost of the emergency generator (S220).

Participation in the intelligent DR market is a method of selecting the lowest bid by bidding at the highest tipping price and the lowest tipping price offered by the exchange.

In addition, if it is determined that the charged electricity amount (previous maximum electric power demand) decreases due to the operation of the emergency generator (S230), the profit calculation unit 130 calculates the basic charge saving amount due to the reduced charge applied power and the variable cost of the emergency generator (S240).

The time when the intelligent DR market is established is closely related to the temperature, and the consumer's use of electricity is also increasing. It is possible to obtain the settlement corresponding to the tapped price through participation in the intelligent DR market and to reduce the base rate because it is the time when the maximum power demand which becomes the applied power is increased.

On the other hand, in the case of the demand management type CPP charge system (S250-Y), if there is a notice on the peak day (S260-Y), the profit calculation unit 130 calculates the variable cost of the peak day electricity rate and the emergency generator, respectively (S270).

In the case of the demand-managed CPP plan participants, the exchanges announce the peak days (10 days a year) one week in advance at the time of the exchange, and charge electricity charges at peak load times 4 to 5 times higher than the peak days. Expensive electricity rates can be avoided.

Next, as shown in FIG. 3, the profit calculating unit 130 calculates a tug price calculated in step S220 of FIG. 2, a base rate reduction calculated in step S240 of FIG. 2, and a peak day electricity rate calculated in step S270 And the total amount of savings is calculated (S310).

In addition, the profit calculating unit 130 may calculate the total variable ratio by summing the variable ratios calculated in steps S220, S240, and S270, and subtracting the variable ratios of the overlapping dates / times (S320).

If it is determined in operation S310 that the total amount of the power saving is greater than the total variation ratio calculated in operation S320, the emergency generator operation unit 140 determines operation of the emergency generator in operation S340.

However, if the emergency generator exceeds the rated operation time (S350-Y), the emergency generator operation unit 140 stops operation of the emergency generator (S360).

The rated operating time is the annual operating time guaranteed by the emergency generator manufacturer.

Up to now, preferred embodiments of the emergency generator operating system and method have been described in detail.

In the above embodiment, three profit generation situations are assumed, all of which are exemplary. The technical idea of the present invention can be applied to addition and / or replacement of these and other situations.

Also, it is not necessary to apply all three earnings situations. The technical idea of the present invention can also be applied when these are selectively applied.

Meanwhile, in the above embodiment, it is assumed that the operation of the emergency generator is decided when the "total saving amount> total variable cost", that is, "profit (total saving amount - total variable cost)> 0". Specifically, it is possible to determine the emergency generator operation when 'profit (total savings - total variable)> T', where 'T ≥ 0'.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

110:
120:
130: profit calculation unit
140: Emergency generator operation part

Claims (6)

A generator operating system, comprising: a first calculating step of calculating a variable ratio according to a generator operation;
A second calculating step of calculating a profit amount according to the generator operation system by referring to the variable ratio; And
And operating the generator by the generator operating system if the profit exceeds a reference amount,
The second calculation step may include calculating a total variable cost considering the date and time of duplication after summing the tapped price participating in the intelligent DR market, the basic charge reduction based on the reduced charge applied power, and the peak charge charge of the demand managed CPP charge Calculate the deducted price as the above profits,
Fee reduction The basic rate reduction by power reduction is caused by participation in the intelligent DR market,
In the operation step,
Wherein when the rated operating time of the generator is exceeded, the generator operating system stops operating the generator.
delete delete delete delete A calculating unit for calculating a variable cost due to the generator operation and calculating a profit amount according to the generator operation with reference to the variable cost; And
And an operating unit for operating the generator if the profit amount calculated by the calculating unit is equal to or greater than a reference amount,
The calculating unit calculates,
After adding the tapped price participating in the intelligent DR market, the basic rate reduction due to the reduction of the applied electricity, and the peak day electricity charge of the demand management type CPP plan, the price obtained by deducting the total variable cost considering the date and time However,
Fee reduction The basic rate reduction by power reduction is caused by participation in the intelligent DR market,
Wherein,
And stops the operation of the generator when the rated operation time of the generator is exceeded.

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