Loss of Mains Protection Upgrade & Programme Registration.
If your SSEG was installed before February 2018 and uses G59 protection, changes to Loss of Mains protection may require your Vector Shift arrangements to be replaced or modified for RoCoF compliance.
Does Your Generation Site Match These Conditions?
From Vector Shift to RoCoF.
Systems installed before February 2018 may require changes to their Loss of Mains protection.
The supplied programme information explains that changes associated with G99/2 required the removal of Vector Shift arrangements in relevant installations and their replacement with Rate of Change of Frequency protection.
For a period of time, generation owners were able to register sites and apply for programme funding to support the necessary work.
Older Loss of Mains protection arrangement present on many existing generation installations.
Rate of Change of Frequency protection used to meet the revised interface protection requirements.
Register Your Details.
Complete the details about your company, generation site and protection equipment and we will get in touch.
Fields marked with an * are required.
ALoMCP Registration Enquiry
Please provide the information below so your site and installation can be reviewed.
Important: Domestic-Scale Generation
The supplied programme information states that the scheme and its technical requirements do not apply to domestic-scale generation, specifically generation connected under the auspices of EREC G83.
A Network-Wide Protection Settings Programme.
The electricity network licensees — National Grid Electricity System Operator Limited, Distribution Network Operators and Independent Distribution Network Operators — established a service for generation owners to change their protection settings.
The programme information sets out the basis on which owners of embedded generating facilities may apply for participation. If an application is accepted, the generation owner becomes contractually bound by the programme arrangements.
The publication of programme information itself should not be regarded as a commitment or representation by a DNO, IDNO or NGESO to enter into a contractual arrangement.
DNOs & IDNOs Listed in the Programme Information.
The supplied programme content identifies the following participating network operators.
Who Was Eligible to Participate?
The supplied programme information lists the following criteria for participation.
Your generation was connected and commissioned onto the network before 01 February 2018.
Your generation operates in long-term parallel mode with the distribution network.
Your generation interface protection settings are not already those required by EREC G59 and you can provide evidence of the existing settings.
Your generation is connected to the network of the DNO or IDNO stated in the application.
You agree to apply the required changes and maintain interface protection settings compliant with the relevant G59 requirements.
Protection Changes Can Extend Beyond a Single Relay.
Multiple Generation Types
Where a site includes more than one generation type, the programme information allows generation type to be entered as “multiple” with further details supplied.
Inverter Control Systems
Some generation equipment includes Loss of Mains functionality within inverter control systems. These settings may also require modification.
Multiple Inverters
Some sites may contain dozens or hundreds of inverters. The supplied information states that all relevant units must be modified where necessary.
Inverter Replacement
The programme information states that replacement of an inverter itself is not covered. The required work concerns changing or disabling the relevant LoM control logic.
Synchronous Generation
Owners of synchronous generation need to consider the risk of out-of-synchronism energisation. The supplied information states that this assessment remains the responsibility of the generation owner.
Identifying Required Work
Generation owners may initially refer to operation and maintenance contractors, the original installer or contractors listed through ENA resources.
2022
Deadline Stated in the Supplied Programme Information
The supplied programme material states that owners of generation had until 31 August 2022 to comply with the modified interface protection requirements in the revised EREC G59, after which non-compliant owners could be subject to an enforcement programme.
Replacement vs Disabling Loss of Mains Functionality.
The supplied briefing note recognises uncertainty during the programme's earlier stages regarding whether non-compliant relays should be replaced or simply have Loss of Mains functionality disabled.
Applications submitted before this date could request relay replacement funded at £4,000 per relay according to the supplied briefing note.
The stated policy for non-compliant relays became disabling Loss of Mains functionality rather than replacement, with a stated payment of £1,500.
The supplied note states that asynchronous or double-fed induction generation may still require relay replacement, with a stated £4,000 payment.
Protection configuration, existing settings and completed works require appropriate evidence under the programme arrangements.
Important Information Before Applying.
The supplied information states that funding was limited and DNOs or IDNOs could have constraints on the number of applications processed in a given period.
Programme documentation encouraged generation owners to apply as early as possible to increase the chance of programme acceptance.
Payments would not exceed the value of the application, even where additional necessary work was identified later.
The supplied programme information states that costs associated with identifying the required works were not reimbursed by the payment scheme.
Talk to G99 Training About Your Protection System.
If your generation site uses older G59 protection, provide your site details and existing relay information and our team can discuss the situation with you.
Tell us about your generation system, DNO area and protection equipment so we can get in touch.
Register Your Details ↑