smart griD IN DENmARK 2.0 - Energinet.dk

smart grid IN DENMARK 2.0 | 278.2 // NEW TECHNOLOGYIN THE POWER GRIDTechnological solutions for automation and for monitoringgrid loads must be established. In so doing, thegrid companies will acquire new knowledge about therate of utilisation of the power grid, which can then beoptimised by operating closer to the technical limitsfor current and voltage, for example.The grid companies should therefore establish furthermeasurements at strategic points in the distributiongrid and also set up operations supportsystems which, based on the measurements, canfacilitate greater capacity utilisation in the exis tinggrid. The measurements must be used by futureplanning and dimensioning tools. At the same time,increased awareness of load levels can be used todefine new specifications for components and protectiveequipment.MEASURES RE NEW TECHNOLOGYIN THE POWER GRID¼ MEASURE 4 – REQUIREMENTS FORDISTRIBUTION GRID COMPONENTSWhen the Smart Grid is used to defer grid reinforcements,it means an increase in boththe average load and, in most cases, also themaximum load on the individual components.It is necessary to analyse how the different gridcomponents are affected by the new mode ofoperation, and the consequences for componentspecifications. Likewise, it is necessaryto examine how substations can be suitablyadapted to house the new equipment whichneeds to be installed as part of a Smart Gridsolution. Also, an assessment should be carriedout of the possibilities for correcting thevoltage quality in the low voltage grid usingequipment installed in the substation.Implementation: 2013Responsiblen: Grid companies¼ MEASURE 5 – ESTABLISHMENT OFMEASUREMENTS AND AUTOMATIONIt is necessary to examine how the grid canbe monitored to a sufficient degree for it tobe possible to increase capacity utilisation. Atthe same time, it should be analysed whetherpower rerouting and grid monitoring can relieveproblems with overloading. Analyses as well astechnologies and communication should betested in pilot projects by the grid companies.Implementation: 2014-2016Responsible: Grid companies¼ MEASURE 6 – NEW OPERATIONS SUPPORTSYSTEMS IN THE DISTRIBUTION GRIDTo operate the power grid closer to its capacitylimit while electricity consumption and productionbecome more unpredictable, a higher degreeof monitoring and estimation is required.Operations support systems must, in the longterm, perform state estimations, operationalsimulations, short-term prognoses and the activationof regulating services. The individualgrid companies have different needs and requirementsregarding their operations supportsystems; for example, data availability will differ.Implementation: 2014-2017Responsible: Grid companies¼ MEASURE 7 – NEW PLANNING ANDDIMENSIONING TOOLSNew models for calculating distribution gridloads must utilise the extra information providedby the hour meters and on-line measurementsin a smart grid. Dynamic line ratingsmay be used for temporary overloading ofthe grid components. The various options andconsequences must be studied further. At thesame time, new methods must be developedfor planning the distribution grid incorporatingnew possibilities for reducing safety marginsduring operation, for precise modelling of gridloads and operational restructurings as well asthe purchasing of regulating services.Implementation: 2015-2018Responsible: Grid companies