Atc methodology contact pdf email atc methodology or contact pjm member relations at 610 6668980 to request the latest file to be posted. Available transfer capability atc is a measure of the unutilized transfer capacity in the transmission network available for further commercial transaction over and. Available transfer capability calculation intechopen. Assessment of available transfer capability and margins.
A novel formulation of the atc problem has been adopted. Ror f is the firm capacity reserved for rollover rights for contracts granting transmission customers the right of first refusal to take or continue to take. Available transfer capability implementation document atcid. Available transfer capability atc atc isatc is mathematically defined as the total transfer capabilitydefined as the total transfer capability ttc less the transmission reliability margin trm, less the sum of committed transmission uses including retail customer service and. An exact solution case and a nonexact solution case examples are provided. The atc concept is similar to nercs incremental transfer capability 9,10. Total transfer capability ttc nerc definition the total transfer capability ttc for an interface is the best engineering estimate of the total amount of electric power that can be transferred over the interface in a reliable manner in a given timeframe.
Authors used total transfer capability in assigning equivalent line limits in previous papers and this paper utilizes available transfer capability in doing so. Mathematically, nonfirm atc is calculated using the equation. Available transfer capability definitions and determination north american electric reliability council contents. Postbacks are changes to firm available transfer capability due to a change in the use of transmission service for that period, as defined in business practices. Evolutionary algorithm for calculating available transfer. Available transfer capability is an index to measure the security and economic viability of an interconnected system. Available transfer capability atc is a measure of the remaining power transfer capability of the transmission network for further transactions. Adjustments to available transfer capability, firm or nonfirm, as determined by schedules submitted via etags in.
Available transfer capability definitions and determination a framework for determining available transfer capabilities of the interconnected transmission. Pdf available transfer capability definitions and determination. Aug 07, 20 available transfer capability atc sbw ppt 1. Definitions atc f is the firm available transfer capability for the atc path for that period.
Atc is the prime important indication for all companies, ipps, retailers, transmitters, distributors and customers, for participation in the trading of electrical powers. Base cases used shall be set up with appropriate loads for the year of study. Purpose the purpose of this document is to describe how pjm performs available transfer capability atc calculations and how pjm process meets the requirements of the nerc mod0011a and mod030 3 standards. Available transfer capability in broad terms, lets define atc as the maximum amount of additional mw transfer possible between two parts of a power system additional means that existing transfers are considered part of the base case and are not included in the atc number. Efficient available transfer capability analysis using. Available transfer capability implementation document for georgia transmission corporation revision log date version number revisionists reason comments 03252011 0 pzm, tw per mod0011a, requirement 3 02122014 1 pzm, tw, rk update and clarify language, reflect scs modeling of smepa and entergy to miso. Determination of available transfer capability within the western interconnection 1.
In the suggested available transfer capability quantification method, total transfer capability is determined by the continuation power flow process. Several approaches have been proposed for atc computation. It is a fast algorithm to calculate the available transfer capability atc. Members of the florida reliability coordinating council frcc have formed the florida transmission capability. Fast determination of simultaneous available transfer. Chapter 3 assessment of available transfer capability. Available transfer capability in broad terms, lets define atc as the maximum amount of additional mw transfer possible between two parts of a power system additional means that existing transfers are considered part of the base case and are not included in the atc number typically these two parts are control areas. To address this issue, efficient evaluation of available transfer capability atc is crucial for system planning, operation, and control. Calculation of available transfer capability is complicated because it involves determination of total transfer capability, transmission reliability margin and capacity benefit margin. Pdf available transfer capability calculation researchgate. Pdf on sep 9, 2011, mojgan hojabri and others published available transfer capability calculation find, read and cite all the research you. Available transfer capability implementation document mod.
Essentially, atc is a measure of the extra transmission capability above the base case power transfer for the purpose of power marketing. Equivalent line limit calculation using available thermal. Singh presented an application of bifurcation criteria for available transfer capability atc determination in a competitive power market having bilateral as well as multilateral transactions in 17. This atcid is specifically required by 7 mod0011a, r3 and its subrequirements. Atc methodology contact pdf email atc methodology or contact pjm member relations at 610 6668980 to request the latest file to be posted load forecast descriptive statement pdf. Service total transfer capability available transfer capability nonrecallable each hour for next 7 days. Okenna department of electricalelectronic engineering, federal university of technology, minna. However these methods could not consider system uncertainties. To solve this, available transfer capability atc must be accurately. A central issue of running a successful electric power market is the evaluation of the associated available transfer capability atc representing the room available for trading. Counterflows are adjustments to firm available transfer capability as determined by the transmission service provider and specified in their atcid. A new algorithm for the available transfer capability. The atc is the minimum transfer under first line outage conditions, called the first contingency. Mathematically, atc is defined as the total transfer capability ttc less the transmission reliability margin trm and the capacity benefit.
Methodology to assess available transfer capability def zone this attachment c2 describes the def methodology used to assess total transfer capability ttc and available transfer capability atc. Methodology to assess available transfer capability last updated. Available transfer capability determination using bifurcation. Available transfer capability tmfa capability of a transmission system is a measure of unutilized capability of the system et a given time and depends on a number of factors such as the system generation dispatch, system load level, load distribution in network, power transfer ween areas and the limit imposed on the transmission network due lo thermal, voltage. Smuds cotp atc path atcid addresses smuds posting of atc for its import and export rights. Available transfer capability has been defined by nerc as the following 3. Available transfer capability atc as index for transmission. Atc is a measure of the transfer capability remaining in the physical transmission network for further commercial activity over and above already committed uses. Available transfer capability determination using power. Available transfer capability calculation 145 important beneficial of using these methods.
Introduction members of the regional transmission groups rtgs and other entities in the western interconnection are obligated to provide information to their members and the public regarding. Available transfer capability calculation 157 ieee 30 bus system figure 3. It is possible to have the loads in one area while the generation in another area provides power. Information document available transfer capability and. This available transfer capability atc implementation document atcid of the nerc standard requirements for determining atc on the smud cotp atc path. Available transfer capability atc of a subnetwork within the u. However, to accurately determine this index, other associated parameters need. This document constitutes the atcid developed by ohio valley electric corporation ovec r3. In the regulate d environment, weather factors, load forecast. Pdf available transfer capability atc researchgate. Service providers to prepare an available transfer capability implementation document atcid which describes how the selected nerc standard mod001 atc calculation methodologies are implemented by the tsp. A detailed procedure of the proposed method is described with a small 4bus case. Intimation of available transfer capability atc by independent system operator is important issue in a deregulated power markets. For transmission networks, one of the major consequences of the nondiscriminatory openaccess requirement is a.
A framework for determining available transfer capabilities of the interconnected transmission networks for a commercially viable. Documentation of total transfer capability and available transfer capability standard development roadmap this section is maintained by the drafting team during the development of the standard and will be removed when the standard becomes effective. Total transmission capability ttc, transmission reliability. Available transfer capability and mod030 flowgate network response available transfer capability and one standard that encompasses the requirements that must be followed for calculating atc, regardless of which of the other three standards are used, including a. The input for atc is power flow case a list of contingencies a buyer sink and seller source of power atc will then determine how much power can. The available transfer capability atc is a measure of the transfer capability remaining in the physical transmission network for further commercial activity over and above previously committed uses. Each month for next 12 months each hour for next 7 days. Available transfer capability atc as index for transmission network performance a case study of nigerian 330kv transmission grid ahmad abubakar sadiq, mark ndubuka. Nonfirm available transfer capability nonfirm atc for an interface is the capability for nonfirm transmission reservations that remains after allowing for existing commitments in the confirmed and accepted status.
Pdf assessment of available transfer capability and. Aeci available transfer capability methodology page 6 of 27 3. Basis for ttc ttcs for nepool interfaces are forecast by the iso based on. It is defined as the quantity of electric power that can be transferred over the interconnected transmission path reliably without violating the predefined set of conditions of the system. Available transfer capability atc is a measure of the transfer capability remaining in the physical transmission network for further commercial activity over and above committed uses 21. The uncertainty is one of the important natures of the power system behavior to determine the atc.
Available transfer capability implementation document for. Pdf assessment of available transfer capability and margins. Atc nf is the nonfirm available transfer capability for the atc path for that period. Available transfer capability implementation document atcid pjm effective date.
Moreover, in the power system transfer capability calculation, the. Atc ttc existing transmission commitments 1 where, total transfer capability ttc is defined as the amount of electric power. There are two significant indices in the transfer capability assessment, namely, the total transfer capability ttc and the available transfer capability atc. Available transfer capability implementation document. Available transfer capability calculations ieee xplore. Determination of available transfer capability within the. Ttc is the total transfer capability of the atc path for that period, determined in accordance with section 4. It is defined as total transfer capability less existing. Attachment c methodology to assess available transfer. Introduction the restructuring of the electric industry throughout the world aims to create competitive markets to trade electricity and generates a host of new technical challenges to market participants and power system researchers.
The paper presents an evolutionary algorithm for calculating available transfer capability atc. Pdf reader by kdan mobile, a pdf expert for windows platform, not only enables you to read, annotate, and share adobe acrobat pdf documents right on your computers and smartphones, also provides a brand new freehand drawing and writing experience. From a commercial perspective, the key element in the development of uniform definitions for transmission. Available transfer capability tmfa capability of a transmission system is a measure of unutilized capability of the system et a given time and depends on a number of factors such as the system generation dispatch, system load level, load distribution in network, power transfer. Available transfer capability definitions and determination. Available transfer capability implementation document atcid pdf. Available transfer capability definitions and determination nerc 5 purpose of this report this report is the response to nercs strategic initiative on atc and defines atc and related terms. Ttc represents as the maximum amount of power that can be transferred over the interconnected transmission network in a reliable manner while meeting all of a specific set of defined. Etc f is the sum of existing firm transmission commitments for the atc path during that period, determined in accordance with section 4. Efficient available transfer capability analysis using linear.
The measure of the transfer capability remaining in the physical transmission network for further commercial activity over and above already committed uses. Available transfer capability for electric power markets. Available transfer capability determination using bifurcation criteria and its enhancement through svc placement sanjay k. Probabilistic approach to available transfer capability. Available transfer capability atc atc isatc is mathematically defined as the total transfer capabilitydefined as the total transfer capability ttc less the transmission reliability margin trm, less the sum of committed transmission uses including retail customer service and the capacity benefit margin cbm.
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